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Secure IoT Gateway Reference Design for Bluetooth® Low
Energy, Wi-Fi® and Sub-1 GHz Nodes
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TIDM-TM4C129XGATEWAY
Design Folder
TM4C123GH6PM
TM4C129ENCPDT
DRV8833
CC3100
CC2650
EK-TM4C123GXL
EK-TM4C129EXL
DRV8833 EVM
CC3100 BoosterPack
CC2650EM
TRF7970A
RF430CL330H
EM Adapter BoosterPack
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Exosite-Based Secure Cloud Connected MidRange Mulit-Protocol IoT Gateway Solution Using
TM4C129Ex MCU, Which Connects Wi-Fi, BLE,
and Sub-1GHz-Based Nodes to Cloud
Supported Nodes Include Wi-Fi-Based Stepper
Motor Control, BLE Sensor Tag, BLE Slave Node,
and Sub-1GHz Slave Nodes
Connection Between Nodes and Gateway Using
NFC-Based Secure Out-of-Band Pairing
Secure Data Communication Between Nodes and
Gateway Using Hardware Crypto Blocks
Secure Cloud Connection Using TI-RTOS NDK and
wolfSSL Stack
Modular Software Designed to Work on EKTM4C129EXL (Crypto Connected LaunchPad™),
EK-TM4C123GXL (Tiva LaunchPad), CC3100,
CC2650, CC1310, and TRF7970A for Code
Composer Studio™
TI-RTOS Used for Task Scheduling
Featured Applications
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ASK Our E2E Experts
Industrial Application and Automation
Smart Grid and Energy
Precision Motion Control
Test and Measurement
Building Automation and Industrial IoT
Exosite
Gateway
TM4C129 Crypto
Connected
/DXQFK3DGŒ
Ethernet
CC3120
Access point
Sub-1GHz Nodes
Sub-1GHz
CC1310
NFC
TRF7970A
TM4C123
/DXQFK3DGŒ
CC2650
Sub-1GHz
CC1310
Sub-1GHz
CC1310
TM4C123
/DXQFK3DGŒ
Wi-Fi Node
CC3100
Station
NFC
RF430
TM4C123
/DXQFK3DGŒ
NFC
RF430
BLE Nodes
TM4C123
/DXQFK3DGŒ
CC2650
NFC
RF430
Copyright © 2016, Texas Instruments Incorporated
All trademarks are the property of their respective owners.
TIDUBY2A – August 2016 – Revised September 2016
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Secure IoT Gateway Reference Design for Bluetooth® Low Energy, Wi-Fi®
and Sub-1 GHz Nodes
Copyright © 2016, Texas Instruments Incorporated
1
System Description
www.ti.com
An IMPORTANT NOTICE at the end of this TI reference design addresses authorized use, intellectual property matters and other
important disclaimers and information.
1
System Description
This TI Design demonstrates the application of a TM4C129 high-performance microcontroller (MCU) as an
IoT gateway securely connected to the cloud. This gateway system is capable of connecting to different
wireless nodes like BLE, Wi-Fi, and Sub-1GHz and also enables their connectivity to the cloud. This demo
features a stepper motor connected to the Wi-Fi node based on the TM4C123 and CC3100, a simple BLE
node based on the TM4C123 and CC2650, a BLE SensorTag, and two Sub-1GHz nodes based on the
TM4C123 and CC1310. This demo uses the services of Exosite as a cloud platform so that all the nodes
connected to the gateway and the gateway itself can be controlled from an Exosite Dashboard GUI. The
objective of this application demo is to provide a jumpstart to customers in creating their own IoT projects
with TI's low cost MCUs and connectivity devices portfolio; all of these are easy to prototype and realize
using TI’s LaunchPad and BoosterPack™ ecosystem.
This TI design was presented in a webinar titled "Design a Cloud Connected IoT Gateway with
Security Protection". The video recording of this webinar is available as part of TI training - Design a
Cloud Connected IoT Gateway with Security Protection
1.1
TM4C123GH6PM
The TM4C123GH6PM MCU is targeted for industrial applications including the following: remote
monitoring, electronic point-of-sale machines, test equipment, measurement equipment, network
appliances, switches, factory automation, HVAC, building control, gaming equipment, motion control,
transportation, and security.
The TM4C123GH6PM is an 80-MHz high-performance MCU with up to 256KB on-chip Flash and 32KB
on-chip SRAM. There are up to 43 GPIOs with programmable control for GPIO interrupts, pad
configuration, and pin muxing. The MCU is integrated with six 32-bit general-purpose timers (up to twelve
16-bit timers), eight UARTs, four synchronous serial interface (SSI) modules, four inter-integrated circuit
(I2C) modules, two 12-bit analog-to-digital converters (ADCs) with 12 analog input channels and a sample
rate of one million samples per second, eight pulse width modulation (PWM) generator blocks, and two
quadrature encoder interface (QEI) modules. The on-chip universal serial bus (USB) controller supports
the USB OTG/Host/Device modes. The ARM® PrimeCell 32-channel configurable μDMA controller is also
integrated to provide a method to offload data transfer tasks from the Cortex®-M4 processor and to
efficiently use the processor and the bus bandwidth.
2
Secure IoT Gateway Reference Design for Bluetooth® Low Energy, Wi-Fi®
and Sub-1 GHz Nodes
TIDUBY2A – August 2016 – Revised September 2016
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System Description
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JTAG/SWD
ARM®
Cortex™-M4F
ROM
(80MHz)
System
Control and
Clocks
(w/ Precis. Osc.)
ETM
FPU
NVIC
MPU
DCode bus
Boot Loader
DriverLib
AES & CRC
Flash
(256KB)
ICode bus
System Bus
TM4C123GH6PM
Bus Matrix
SRAM
(32KB)
SYSTEM PERIPHERALS
EEPROM
(2K)
Hibernation
Module
GPIOs
(43)
GeneralPurpose
Timer (12)
USB OTG
(FS PHY)
SSI
(4)
Advanced Peripheral Bus (APB)
Watchdog
Timer
(2)
Advanced High-Performance Bus (AHB)
DMA
SERIAL PERIPHERALS
UART
(8)
I2C
(4)
CAN
Controller
(2)
ANALOG PERIPHERALS
Analog
Comparator
(2)
12- Bit ADC
Channels
(12)
MOTION CONTROL PERIPHERALS
PWM
(16)
QEI
(2)
Copyright © 2016, Texas Instruments Incorporated
Figure 1. TM4C123GH6PM MCU High-Level Block Diagram
TIDUBY2A – August 2016 – Revised September 2016
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System Description
1.2
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TM4C1294NCPDT
The TM4C1294ECPDT is a 120-MHz high-performance MCU with a 1MB on-chip Flash and 256KB onchip SRAM and features an integrated Ethernet MAC+PHY for connected applications. The device has
high-bandwidth interfaces like a memory controller and a high-speed USB2.0 digital interface. Integrating
a number of low- to mid-speed serials, up to a 4MSPS 12-bit ADC, and motion control peripherals, this
device makes for a unique solution for a variety of applications ranging from industrial communication
equipment to Smart Energy or Smart Grid applications. The TM4C129ENCPDT MCU is code-compatible
to all members of the extensive Tiva™ C Series, providing flexibility to fit precise needs.
This MCU is hardware encryption enabled. It provides security by its CRC hardware, AES hardwareaccelerated data encryption, DES block cipher implementation, hashing hardware accelerator, and four
tamper units along with tamper event response. Therefore, the TM4C1294ECPDT is ideally suited for
developing secure cloud connected IoT systems to assist factory control or automation systems.
4
Secure IoT Gateway Reference Design for Bluetooth® Low Energy, Wi-Fi®
and Sub-1 GHz Nodes
TIDUBY2A – August 2016 – Revised September 2016
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System Description
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JTAG/SWD
ARM®
Cortex™-M4F
ROM
(120MHz)
System
Control and
Clocks
(w/ Precis. Osc.)
ETM
FPU
NVIC
MPU
DCode bus
Boot Loader
DriverLib
AES & CRC
Ethernet Boot Loader
Flash
(1024KB)
ICode bus
System Bus
TM4C129ENCPDT
Bus Matrix
SRAM
(256KB)
SYSTEM PERIPHERALS
DMA
Watchdog
Timer
(2 Units)
EEPROM
(6K)
Hibernation
Module
GPIOs
(90)
GeneralPurpose
Timer (8 Units)
CRC
Module
External
Peripheral
Interface
DES
Module
AES
Module
SSI
(4 Units)
Ethernet
MAC/PHY
Advanced Peripheral Bus (APB)
Advanced High-Performance Bus (AHB)
USB OTG
(FS PHY
or ULPI)
Tamper
SHA/MD5
Module
SERIAL PERIPHERALS
UART
(8 Units)
I2C
(10 Units)
CAN
Controller
(2 Units)
ANALOG PERIPHERALS
Analog
Comparator
(3 Units)
12- Bit ADC
(2 Units /
20 Channels)
MOTION CONTROL PERIPHERALS
PWM
(1 Units /
8 Signals)
QEI
(1 Units)
Copyright © 2016, Texas Instruments Incorporated
Figure 2. TM4C1294ECPDT MCU High-Level Block Diagram
TIDUBY2A – August 2016 – Revised September 2016
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System Description
1.3
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DRV8833
The DRV8833 has two H-bridge drivers to drive a bipolar stepper motor, two DC brush motors, or other
inductive loads. Aimed at driving 3.3-V and 5-V motors, this stepper driver with integrated FETs support
up to 1.5 ARMS with a low-power sleep mode to conserve power for battery-powered applications. Internal
shutdown functions with a fault output pin protect the device from overcurrent, short-circuit, undervoltage
lockout, and over temperature.
2.7 to 10.8 V
DRV8833
+
M
1.5 A
nSLEEP
±
Controller
PWM
nFAULT
Stepper or
bushed DC
motor driver
+
±
1.5 A
Copyright © 2016, Texas Instruments Incorporated
Figure 3. DRV833 Functional Block Diagram
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Secure IoT Gateway Reference Design for Bluetooth® Low Energy, Wi-Fi®
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System Description
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1.4
CC3100
The CC3100 Wi-Fi network processor subsystem features a Wi-Fi Internet-on-a-chip™ integrated circuit
and contains an additional dedicated ARM MCU that completely offloads the host MCU. This subsystem
includes an 802.11 b/g/n radio, baseband, and MAC with a powerful crypto engine for fast, secure Internet
connections with 256-bit encryption. The CC3100 supports Station, Access Point, and Wi-Fi Direct modes.
The device also supportsWPA2 personal and enterprise security and WPS 2.0. This subsystem includes
embedded TCP/IP and TLS/SSL stacks, HTTP server, and multiple Internet protocols.
Wi-Fi Driver
TCP/IP & TLS/SSL
Stacks
ARM Processor
RAM
ROM
Crypto Engine
MAC Processor
UART
DC-DC
BAT Monitor
Oscillators
LNA
SYSTEM
Synthesizer
PA
HOST I/F
SPI
Baseband
Radio
SWAS031-A
Figure 4. CC3100 Hardware Overview
TIDUBY2A – August 2016 – Revised September 2016
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System Description
1.5
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CC2650
The CC2650 is a cost-effective, ultra-low-power, 2.4-GHz RF wireless MCU targeting Bluetooth® Smart,
ZigBee® and 6LoWPAN, and ZigBee RF4CE remote control applications. A very low active RF and MCU
current and low-power mode current consumption provides excellent battery lifetime, operates on small
coin-cell batteries, and operates in energy-harvesting applications. The CC2650 contains a 32-bit ARM
Cortex-M3 running at 48 MHz as the main processor and has a rich peripheral feature set, including an
ultra-low-power sensor controller. The ultra-low-power sensor controller is ideal for interfacing external
sensors or collecting analog and digital data while the rest of the system is in sleep mode. The Bluetooth
low-energy (BLE) controller and the IEEE 802.15.4 MAC are embedded into ROM and are running
partially on a separate ARM Cortex-M0 processor. This architecture improves overall system performance
and power consumption and frees up flash memory for the application.
Figure 5. CC2650 Architectural Overview
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Secure IoT Gateway Reference Design for Bluetooth® Low Energy, Wi-Fi®
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System Description
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1.6
BLE SensorTag
The SensorTag includes 10 low-power MEMS sensors in a tiny red package. It is expandable with
DevPacks to make it easy to add more sensors or actuators. It can be connected to the cloud with
Bluetooth Smart and sensor data is online in 3 minutes. The SensorTag is based on the CC2650 wireless
MCU, offering 75% lower power consumption than previous Bluetooth Smart products. This allows the
SensorTag to be battery powered and offer years of battery lifetime from a single coin cell battery. The
Bluetooth Smart SensorTag includes iBeacon technology, which allows a phone to launch applications
and customize content based on SensorTag data and physical location. Additionally, the SensorTag can
be enabled with ZigBee®/6LoWPAN technology.
Figure 6. BLE SensorTag With Coin Cell Battery
Figure 7. BLE SensorTag Internals (CC2650 Along With Sensors)
TIDUBY2A – August 2016 – Revised September 2016
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System Description
1.7
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CC1310
The device is a member of the CC26xx and CC13xx family of cost-effective, ultra-low-power, 2.4-GHz and
sub-1-GHz RF devices. Very low active RF, MCU current, and low-power mode current consumption
provide excellent battery lifetime and allow operation on small coin-cell batteries and in energy-harvesting
applications. The CC1310 is the first part in a Sub-1GHz family of cost-effective, ultra-low-power wireless
MCUs. This device combines a flexible, very low-power RF transceiver with a powerful 48-MHz Cortex-M3
MCU in a platform supporting multiple physical layers and RF standards. A dedicated radio controller
(Cortex-M0) handles low-level RF protocol commands that are stored in ROM or RAM, thus ensuring ultralow power and flexibility. The low-power consumption of the CC1310 does not come at the expense of RF
performance; the CC1310 has excellent sensitivity and robustness (selectivity and blocking) performance.
SimpleLinkTM CC1310A Wireless MCU
cJTAG
Main CPU:
RF core
ROM
ADC
ARM®
Cortex®-M3
32-, 64-,
128-KB
Flash
ADC
Digital PLL
DSP Modem
8-KB
Cache
20-KB
SRAM
ARM®
Cortex®-M0
4x 32-Bit Timers
UART
2x SSI (SPI,µW,TI)
I2S
Watchdog Timer
10 / 15 / 30 GPIOs
TRNG
ROM
Sensor Controller
General Peripherals / Modules
I 2C
4-KB
SRAM
Sensor Controller
Engine
12-Bit ADC, 200ks/s
2x Analog Comparators
SPI / I2C Digital Sensor IF
AES
Temp. / Batt. Monitor
32 ch. PDMA
RTC
Constant Current Source
Time-to-Digital Converter
2-KB SRAM
DC-DC Converter
Copyright © 2016, Texas Instruments Incorporated
Figure 8. CC1310 Functional Block Diagram
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System Description
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1.8
TRF7970A
The TRF7970A is an integrated analog front-end and data-framing device for a 13.56-MHz RFID and near
field communication (NFC) system. Built-in programming options make the device suitable for a wide
range of applications for proximity and vicinity identification systems. The device can perform in one of
three modes: RFID and NFC reader, NFC peer, or in card emulation mode. Built-in user-configurable
programming options make the device suitable for a wide range of applications. The TRF7970A device is
configured by selecting the desired protocol in the control registers. Direct access to all control registers
allows fine tuning of various reader parameters as needed.
1.9
RF430CL330H
The Texas Instruments Dynamic NFC Interface Transponder RF430CL330H is an NFC Tag Type 4 device
that combines a wireless NFC interface and a wired SPI or I2C interface to connect the device to a host.
The NDEF message in the SRAM can be written and read from the integrated SPI or I2C serial
communication interface and can also be accessed and updated wirelessly through the integrated
ISO14443B-compliant RF interface that supports up to 848 kbps. This operation allows NFC connection
handover for an alternative carrier like BLE and Wi-Fi as an easy and intuitive pairing process or
authentication process with only a tap. As a general NFC interface, the RF430CL330H enables end
equipments to communicate with the fast-growing infrastructure of NFC-enabled smart phones, tablets,
and notebooks.
1.10 TM4C123 Swizzle Adapter Board
The TM4C123 swizzle adapter board is a special purpose hardware adapter board to interface the
TM4C123x LaunchPad with NFC and Wi-Fi BoosterPacks along with rendering necessary PWM outputs
for the DRV8833 motor drive. Inorder to accommodate PWM pins, instead of using default TM4C123
SPI2, SPI0 is used to communicate to CC3100, hence CC3100 Booster pack cannot be mounted directly.
Swizzle adapter board reroutes SPI0 lines to SPI2 position on a different header to facilitate CC3100
mounting, this can be done manually through Jumper wires too.
Figure 9. TM4C123 Swizzle Adapter Board
TIDUBY2A – August 2016 – Revised September 2016
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System Description
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1.11 Exosite
Exosite is Internet of Things (IoT) software as a service (SaaS) company that develops software for
companies that view and analyze data collected from sensors built into physical objects. Exosite's most
basic concept is to make internet-connected physical things useful to people and businesses. Exosite's
products help developers, companies, and organizations build IoT product solutions by providing pieces of
the IoT system, including device code, a device connectivity and application platform, and hosted
applications and services.
To get acquainted quickly with the way TM4C devices communicate with the Exosite, go through the
"qs_iot" example project available in the TivaWare™. It requires the user to sign-up or log into the
www.ti.exosite.com portal and then register the device on the server so that the device can be identified
securely by the server and further communication can take place.
1.12 Stepper Motor Control
A stepper motor is a brushless DC electric motor that divides a full rotation into a number of equal steps.
The motor's position can then be commanded to move and hold at one of these steps without feedback.
The stepper motor is widely used in a wide range of applications involving precision motion control.
1 step
AOUT1
AIN1
AIN2
DRV8833
BIN1
BIN2
AOUT2
BOUT1
BOUT2
Figure 10. Driving the Stepper Motor in Full-Step Mode
12
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Getting Started Hardware
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2
Getting Started Hardware
2.1
List of Hardware Components
This application requires following hardware components. Some minor modifications are required in the
hardware, and they must be done before proceeding further with the software setup.
Table 1. List of Hardware Components
BOARD NAME
INFO
QTY
TM4C129EXL
Tiva-C Crypto connected LaunchPad
1
TM4C123GXL
Tiva-C LaunchPad
4
CC3100BOOST
CC3100 Wi-Fi BoosterPack
2
BOOST-CCEMADAPTER
EM adapter BoosterPack
5
CC2650EM-4XD
CC2650 BLE device
2
CC1310EMK
CC1310 Sub-1GHz device
3
DLP-7970ABP
TRF7970A NFC transceiver BoosterPack
1
DLP-RF430BP
RF430CL330H NFC tag BoosterPack
4
BLE SensorTag
BLE SensorTag
1
TM4C123 swizzle adapter board
Specially designed board to interface multiple BoosterPacks
1
DRV8833-EVM
Driver board to run a stepper motor
1
Stepper motor
A stepper motor with 5- to 12-V input parameters
1
DC power supply
An external power supply to run the stepper motor
1
TIDUBY2A – August 2016 – Revised September 2016
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Getting Started Hardware
2.2
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Hardware Configuration
2.2.1
Gateway
2.2.1.1
Setting up Gateway Hardware
The hardware components required to setup the gateway are listed in Table 2:
Table 2. Gateway Hardware Setup
SR NO
1
COMPONENT NAME
TM4C129EXL Crypto Connected LaunchPad
No modifications are required.
CC3100 Wi-Fi BoosterPack
Mandatory configurations on the BoosterPack are as shown in Figure 11. Follow these steps:
1.
2.
Remove the two 0-Ω resistors as shown in Figure 11. These resistors are connected to the RX and TX pins on
the BoosterPack header P1. Removing them ensures that the CC3100 does not interfere with its TX and RX
pins.
Change the jumper J-8 setting to MCU.
2
1
2
Figure 11. Hardware Configuration of CC3100 BoosterPack on Gateway
14
3
CC2650EM BLE Device
No modifications are required.
4
CC1310EM Sub-1GHz Device
No modifications are required.
Secure IoT Gateway Reference Design for Bluetooth® Low Energy, Wi-Fi® and
Sub-1 GHz Nodes
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Table 2. Gateway Hardware Setup (continued)
SR NO
COMPONENT NAME
EM Adapter BoosterPack (Two Numbers)
NOTE: Two BoosterPacks are required to connect to BLE and Sub-1GHz devices.
Both follow the same configuration. In fact, all the EM adapter BoosterPacks
used in this entire application demo follow same hardware configuration.
Mandatory configurations on the BoosterPacks are as shown in Figure 12. Follow these steps:
1. Remove all the 0-Ω resistors R-2 to R-20 except R-3 and R-4 as shown in Figure 12.
2. Connect the inner R-18 junction with the outer R-15 junction as shown in Figure 12. This
change connects the TM4C and CC2650 and CC1310 RESET pins.
5
1
2
Figure 12. Hardware Configuration of EM Adapter BoosterPack on Gateway
NOTE: The RESET pin of the EM Adapter BoosterPack is not aligned with the
RESET pin of the TM4C1294EXL on BoosterPack-1. Hence, hard-wire the
RESET pin to avoid unknown observations.
TRF7970A NFC Transceiver BoosterPack
Mandatory configurations on the BoosterPack are as shown in Figure 13. Follow these steps:
1.
Solder a 0-Ω resistor to connect the IRQ junction to the adjacent junction numbered as "2" as shown in
Figure 13.
6
Figure 13. Hardware Configuration of TRF7970A BoosterPack on Gateway
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Getting Started Hardware
2.2.1.2
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BoosterPack Signal Mapping
The header connections for setting up the gateway are shown in the following tables. Refer to these tables
after programming all the hardware components with the necessary binaries.
Table 3. BoosterPack-1 Signal Mapping
(1)
16
BOOSTERPACK
CONNECTOR
TM4C1294 CRYPTO
CLP
EM ADAPTER
BOOSTERPACK
A1-1
3.3 V
VDD_LP
VDD
1 (VDD)
A1-2
PE4
Unused
Unused
2 (Unused)
A1-3
PC4_U7RX
LP1.3
RF1.09
3 (Unused)
A1-4
PC5_U7TX
LP1.4
RF1.07
4 (Unused)
A1-5
PC6
Unused
Unused
5 (Unused)
A1-6
PE5
Unused
Unused
6 (Unused)
A1-7
PD3_SSI2CLK
Unused
Unused
7 (Unused)
A1-8
PC7
Unused
Unused
8 (IRQ)
CC2650EM
TRF7970A NFC
BOOSTERPACK
A1-9
PB2
Unused
Unused
9 (SS)
A1-10
PB3
Unused
Unused
10 (EN)
D1-1
GND
GND
GND
20 (GND)
D1-2
PM3
Unused
Unused
19 (Unused)
D1-3
PH2
Unused
Unused
18 (Unused)
D1-4
PH3
Unused
Unused
17 (Unused)
D1-5
RESET
RESET (1)
RF2.15 (RESET)
16 (RESET)
D1-6
PD1_I2C7SDA
Unused
Unused
15 (MOSI)
D1-7
PD0_I2C7SCl
Unused
Unused
14 (MISO)
D1-8
PN2
Unused
Unused
13 (Unused)
D1-9
PN3
Unused
Unused
12 (Unused)
D1-10
PP2
Unused
Unused
11 (Unused)
The RESET pin of the EM Adapter BoosterPack is not aligned with the RESET pin of the TM4C1294EXL on Boosterpack-1.
Hence, hard-wire the RESET pin to avoid unknown observations.
Secure IoT Gateway Reference Design for Bluetooth® Low Energy, Wi-Fi®
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Table 4. BoosterPack-2 Signal Mapping
(1)
BOOSTERPACK
CONNECTOR
TM4C1294 CRYPTO
CLP
CC3100
BOOSTERPACK
EM ADAPTER
BOOSTERPACK
CC1310EM
A2-1
3.3 V
P1.1 (3.3 V)
VDD_LP
VDD
A2-2
PD2
Unused
Unused
Unused
A2-3
PP0
Unused
LP1.3
RF1.09
A2-4
PP1
Unused
LP1.4
RF1.07
A2-5
PD4
P1.5 (HIB)
Unused
Unused
A2-6
PD5
Unused
Unused
Unused
A2-7
PQ0
P1.7 (CLK)
Unused
Unused
A2-8
PP4
Unused
Unused
Unused
A2-9
PN5
Unused
Unused
Unused
A2-10
PN4
Unused
Unused
Unused
D2-1
GND
P2.1 (GND)
GND
GND
D2-2
PM7
P2.2 (IRQ)
Unused
Unused
D2-3
PP5
P2.3 (CS)
Unused
Unused
D2-4
PA7
Unused
Unused
Unused
RESET
(1)
D2-5
RESET
P2.5 (RESET)
D2-6
PQ2
P2.6 (DIN)
Unused
RF2.15 (RESET)
Unused
D2-7
PQ3
P2.7 (DO)
Unused
Unused
D2-8
PP3
Unused
Unused
Unused
D2-9
PQ1
Unused
Unused
Unused
D2-10
PM6
Unused
Unused
Unused
The RESET pin of the EM Adapter BoosterPack is not aligned with the RESET pin of the TM4C1294EXL on BoosterPack-1.
Hence, hard-wire the RESET pin to avoid unknown observations.
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Wi-Fi Node
2.2.2.1
Setting up Wi-Fi Node Hardware
The hardware components required to setup the Wi-Fi node are listed in Table 5:
Table 5. Wi-Fi Node Hardware Setup
SR NO
COMPONENT NAME
1
TM4C123GXL LaunchPad
No modifications are required.
2
CC3100 Wi-Fi BoosterPack
Change the jumper J-8 setting to MCU.
RF430CL330H BoosterPack
Mandatory configurations on the BoosterPack are as shown in Figure 14. Follow this step:
1.
Remove the 0-Ω resistor at R-8 and place a 0-Ω resistor at R-9 as shown in Figure 14.
3
Figure 14. Hardware Configuration of TRF7970A BoosterPack on Wi-Fi Node
18
4
TM4C123 Swizzle Adapter Board
No modifications are required.
5
DRV8833 Stepper Motor Driver Board
No modifications are required.
6
Stepper Motor
No modifications are required.
7
External Power Supply (5 to 12 V)
No modifications are required.
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2.2.2.2
Wi-Fi Node Signal Mapping
The header connections for setting up the Wi-Fi node are shown in the following tables. Refer to these
tables after programming all the hardware components with the necessary binaries.
Table 6. Wi-Fi Node Signal Mapping
BOOSTERPACK
CONNECTOR
CC3100 BOOSTERPACK
(WI-FI)
DLP-RF430BP (NFC)
TM4C123 LAUNCHPAD
CONNECTOR
P1-1
3.3 V
3.0 V
J1-1: 3.3 V
P1-2
Open
Unused
Open
P1-3
CC_UART1_TX
Unused
J1-3: PB0_U1RX
P1-4
CC_UART1_RX
Unused
J1-4: PB1_U1TX
P1-5
CC_nHIB
Unused
J3-7: PE1
P1-6
Open
Unused
J3-8: PE2
P1-7
CC_SPI_CLK
DATA_CLK
J2-10: PA2 _SSI0CLK
P1-8
Open
RESET
J3-3: PD0
P1-9
Test_3
Unused
J3-5: PD2
P1-10
FORCE_AP
Unused
J4-3: PB3
P3-1
5V
N/A
J3-1: 5V
P3-2
GND
N/A
J3-2GND
P3-3
Open
N/A
P3-4
Open
N/A
P3-5
Open
N/A
P3-6
Open
N/A
P3-7
Open
N/A
P3-8
Open
N/A
P3-9
Open
N/A
P3-10
Open
N/A
P4-1
Test_29
N/A
J4-1: PF2
P4-2
Test_30
N/A
J4-2: PF3
P4-3
Open
N/A
P4-4
CC_URT1_CTS
N/A
J2-4: PF0_U1RTS
P4-5
CC_UART1_RTS
N/A
J3-10: PF1_U1CTS
P4-6
Open
N/A
P4-7
CC_NWP_UART_TX
N/A
J4-6: PC6_U3RX
P4-8
CC_WL_UART_TX
N/A
J1-5: PE4_U5RX
P4-9
CC_WLRS232_RX
N/A
J4-9: PD7_U2TX
P4-10
CC_WLRS232_TX
N/A
J4-8: PD6_U2RX
P2-1
GND
GND
J2-1: GND
P2-2
CC_IRQ
Unused
J3-6: PD3
P2-3
CC_SPI_CS
Unused
J2-3: PE0
P2-4
Open
Unused
Open
P2-5
MCU_RESET_IN
Unused
J2-5: RESET
P2-6
CC_SPI_DIN
MOSI/SDA
J1-8: PA5_SSI0TX,
J1-10: PA7_I2C1SDA
P2-7
CC_SPI_DOUT
MISO/SCL
J2-8: PA4 _SSI0RXJ1-9:
PA6_I2C1SCL
P2-8
Test_63
SPI_CS
J1-7: PB4
P2-9
Test_64
INTO
J4-7: PC7
P2-10
Test_18
Unused
J3-3: PD0
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Table 7. Stepper Motor Drive
DRV8833
TM4C123 SWIZZLE ADAPTER BOARD
TM4C123
AIN1
J2-6
PB7_M0PWM1
AIN2
J1-2
PB5_M0PWM3
BIN2
J1-6
PE5_M0PWM5
BIN1
J4-5
PC5_M0PWM7
GND
GND
GND
VDD (external power supply)
Unused
Unused
Swizzle board
DRV8833
Stepper motor
AIN1
1
2
AOUT1
BIN2
3
A
AOUT2
BIN1
4
B
BOUT2
B
BOUT1
DRV8833
AIN2
A
TM4C123
5
VDD
6
GND
7
CC3100
RF430
8
Copyright © 2016, Texas Instruments Incorporated
Figure 15. Block Diagram of Interface Between TM4C123 Swizzle Adapter Board and DRV8833
Note that the header on the TM4C123 swizzle adapter board can be directly plugged into the pins on the
DRV8833.
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2.2.3
BLE Node
2.2.3.1
Setting up BLE Node Hardware
The hardware components required to setup the BLE node are listed in Table 8:
Table 8. BLE Node Hardware Setup
SR NO
COMPONENT NAME
1
TM4C123GXL LaunchPad
No modifications are required.
2
CC2650EM BLE Device
No modifications are required.
EM Adapter BoosterPack
Mandatory configurations on the BoosterPacks are as shown in Figure 16. Follow these steps:
1.
2.
Remove all the 0-Ω resistors R-2 to R-20 except R-3 and R-4 as shown in Figure 16..
Connect the inner R-18 junction with the outer R-15 junction as shown in Figure 16. This change connects the
TM4C123 and CC2650 RESET pins.
1
3
2
Figure 16. Hardware Configuration of EM Adapter BoosterPack on BLE Node
NOTE: The RESET pin of the EM Adapter BoosterPack is not aligned with the
RESET pin of the TM4C1294EXL on BoosterPack-1. Hence, hard-wire the
RESET pin to avoid unknown observations.
4
RF430CL330H BoosterPack
No modifications are required.
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BLE Node Signal Mapping
The header connections for setting up the BLE node are shown in the following tables. Refer to Table 9
after programming all the hardware components with the necessary binaries.
Table 9. BLE Node Signal Mapping
(1)
22
BOOSTERPACK
CONNECTOR
TM4C123 LAUNCHPAD
EM ADAPTER
BOOSTERPACK
CC2650EM
RF430CL330H
BOOSTERPACK
A-1
3.3 V
A-2
PB5
VDD_LP
VDD
VDD (J1.1)
Unused
Unused
Unused
A-3
A-4
PB0
LP1.3
RF1.09
Unused
PB1
LP1.4
RF1.07
Unused
A-5
PE4
Unused
Unused
Unused
A-6
PE5
Unused
Unused
Unused
A-7
PB4
Unused
Unused
Unused
A-8
PA5
Unused
Unused
Unused
A-9
PA6
Unused
Unused
Unused
A-10
PA7
Unused
Unused
Unused
D-1
GND
GND
GND
GND
D-2
PB2
Unused
Unused
Unused
D-3
PE0
Unused
Unused
Unused
D-4
PF0
Unused
Unused
Unused
D-5
RESET
RESET (1)
RF2.15 (RESET)
RESET (J2.16)
D-6
PB7
Unused
Unused
MOSI (J2.15)
D-7
PB6
Unused
Unused
MISO (J2.14)
D-8
PA4
Unused
Unused
Unused
D-9
PA3
Unused
Unused
INTO (J2.12)
D-10
PA2
Unused
Unused
Unused
The RESET pin of the EM Adapter BoosterPack is not aligned with the RESET pin of the TM4C123GXL on BoosterPack-1.
Hence, hard-wire the RESET pin to avoid unknown observations.
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2.2.4
Sub-1GHz Node
2.2.4.1
Setting up Sub-1GHz Node Hardware
The hardware components required to setup the Sub-1GHz node are listed in Table 10:
Table 10. Sub-1GHz Node Hardware Setup
SR NO
COMPONENT NAME
1
TM4C123GXL LaunchPad
No modifications are required.
2
CC1310EM Sub-1GHz Device
No modifications are required.
EM Adapter BoosterPack
Mandatory configurations on the BoosterPacks are as shown in Figure 17. Follow these steps:
1.
2.
Remove all the 0-Ω resistors R-2 to R-20 except R-3 and R-4 as shown in Figure 17.
Connect the inner R-18 junction with the outer R-15 junction as shown in Figure 17. This change connects the
TM4C123 and CC1310 RESET pins.
1
3
2
Figure 17. Hardware Configuration of EM Adapter BoosterPack on Sub-1GHz Node
NOTE: The RESET pin of the EM Adapter BoosterPack is not aligned with the
RESET pin of the TM4C1294EXL on BoosterPack-1. Hence, hard-wire the
RESET pin to avoid unknown observations.
4
RF430CL330H BoosterPack
No modifications are required.
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Sub-1GHz Node Signal Mapping
The header connections for setting up the Sub-1GHz node are shown in Table 11. Refer to Table 11 after
programming all the hardware components with the necessary binaries.
Table 11. Sub-1GHz Node Signal Mapping
(1)
24
BOOSTERPACK
CONNECTOR
TM4C123 LAUNCHPAD
EM ADAPTER
BOOSTERPACK
CC1310EM
RF430CL330H
BOOSTERPACK
A-1
3.3 V
A-2
PB5
VDD_LP
VDD
VDD (J1.1)
Unused
Unused
Unused
A-3
A-4
PB0
LP1.3
RF1.09
Unused
PB1
LP1.4
RF1.07
Unused
A-5
PE4
Unused
Unused
Unused
A-6
PE5
Unused
Unused
Unused
A-7
PB4
Unused
Unused
Unused
A-8
PA5
Unused
Unused
Unused
A-9
PA6
Unused
Unused
Unused
A-10
PA7
Unused
Unused
Unused
D-1
GND
GND
GND
GND
D-2
PB2
Unused
Unused
Unused
D-3
PE0
Unused
Unused
Unused
D-4
PF0
Unused
Unused
Unused
D-5
RESET
RESET (1)
RF2.15 (RESET)
RESET (J2.16)
D-6
PB7
Unused
Unused
MOSI (J2.15)
D-7
PB6
Unused
Unused
MISO (J2.14)
D-8
PA4
Unused
Unused
Unused
D-9
PA3
Unused
Unused
INTO (J2.12)
D-10
PA2
Unused
Unused
Unused
The RESET pin of EM Adapter BoosterPack is not aligned with the RESET pin of the TM4C123GXL on BoosterPack-1. Hence,
hard-wire the RESET pin to avoid unknown observations.
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3
Getting Started Software
3.1
Gateway Software Architecture
Figure 18 explains the architecture of the TM4C129x-based IoT gateway.
TM4C129x
Gateway main application
BLE
Wi-Fi
Interface API
TM4C129x
NFC
BLE
Sub 1 GHz
Sub 1-GHz node application
BLE central application
Exosite API
EasyLink API
BLE stack
SSL
NDK
TI-RTOS
TI-RTOS
TI-RTOS
TivaWare
CC13xxWare
CC26xxWare
UART
UART
TM4C129EXL Crypto
FRQQHFWHG /DXQFK3DGŒ
CC13xx BoosterPack
CC26xx BoosterPack
Wi-Fi
NFC
Service pack
TRF7970A
(NFC transceiver BoosterPack)
I2C
I2C
CC3100 BoosterPack
Copyright © 2016, Texas Instruments Incorporated
Figure 18. Gateway Software Architecture Diagram
TM4C129x software blocks:
• TivaWare C: for TM4C hardware register access and serial communications to other hardware through
UART, SPI, and I2C.
• Exosite API: a C language translation of the set of standard routines, which are required to connect
and communicate with the Exosite Cloud Server. This implementation internally uses NDK and
wolfSSL libraries of TI-RTOS.
• Interface API: allows the TM4C129x to communicate to the BLE, Wi-Fi, and Sub-1GHz hardware
mounted on it using the onboard serial peripherals such as UART, SPI, and I2C.
• TI-RTOS: used for scheduling tasks, which handle communication with:
– Hardware peripherals (BLE, Wi-Fi, Sub-1GHz)
– Exosite
– Command line interface
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BLE software blocks:
• TI-RTOS: for general scheduling
– Manages the command and response handling over the UART
– Operates the BLE peripheral
• CC26xxWare: performs CC26xx hardware access and the UART operation
• BLE stack: supports the BLE protocol
Sub-1GHz software blocks:
• TI-RTOS: for general scheduling
– Manages the command and response handling over the UART
– Operates the Sub-1GHz peripheral
• CC13xxWare: performs CC13xx hardware access and the UART operation
• EasyLink API: supports the Sub-1GHz protocol
Wi-Fi software blocks:
• There is no specific software required to be run on the CC3100 Wi-Fi module. However, for the sake of
maintaining uniformity across platforms, the CC3100 is programmed with the latest CC3100SDKSERVICEPACK.
NFC software blocks:
• There are no NFC software blocks in this design.
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3.2
Wi-Fi Node Software Architecture
Figure 19 shows the software architecture of the Wi-Fi node and slave.
TM4C123x
Node main application
NFC
Interface API
Wi-Fi
TI-RTOS
Wi-Fi
TivaWare
NFC
TRF7970A
(NFC transceiver BoosterPack)
UART
TM4C123(;/ /DXQFK3DGŒ
Service pack
UART
CC3100 BoosterPack
Swizzle board
DRV8833
Stepper motor
Copyright © 2016, Texas Instruments Incorporated
Figure 19. Wi-Fi Node Software Architecture
TM4C123x software blocks:
• TivaWare C: allows for TM4C hardware register access and serial communications to other hardware
through SPI. Also, it controls the PWM signals from the onboard PWM modules, which are used to
drive the motor.
• Interface API: allows the TM4C123x to communicate to the Wi-Fi, NFC hardware mounted on it using
the onboard SPI
• TI-RTOS: for scheduling tasks, which handle communication with
– Hardware peripherals (Wi-Fi, NFC)
– Motor drive, sending desired PWM signals
– Command line interface
Wi-Fi software blocks:
• There is no specific software required to be run on the CC3100 Wi-Fi module. However, for the sake of
maintaining uniformity across platforms, the CC3100 is programmed with the service pack.
NFC software blocks:
• There are no NFC software blocks in this design.
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BLE Node Software Architecture
Figure 20 shows the software architecture of the BLE node and slave.
TM4C129x
Gateway main application
BLE
Wi-Fi
Interface API
NFC
BLE
Sub 1 GHz
BLE central application
Exosite API
BLE stack
SSL
NDK
TI-RTOS
TI-RTOS
TivaWare
NFC
TRF7970A
(NFC transceiver BoosterPack)
CC26xxWare
I2C
TM4C129EXL Crypto
FRQQHFWHG /DXQFK3DGŒ
UART
CC26xx BoosterPack
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Figure 20. BLE Node Software Architecture Design
TM4C123x software blocks:
• TivaWare C: allows for TM4C hardware register access and serial communications to other hardware
through UART and I2C
• Interface API: allows the TM4C123x to communicate to the BLE, NFC hardware mounted on it using
the onboard UART and I2C serial peripherals
• TI-RTOS: used for scheduling tasks, which handle communication with
– Hardware peripherals (BLE, NFC)
– Command line interface
BLE software blocks:
• TI-RTOS: for general scheduling
– Manages the command and response handling over the UART
– Operates the BLE peripheral
• CC26xxWare: performs CC26xx hardware access and the UART operation
• BLE stack: supports the BLE protocol
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3.4
Sub-1GHz Node Software Architecture
Figure 21 shows the software architecture of the BLE node and slave.
TM4C129x
Gateway main application
BLE
Wi-Fi
Interface API
NFC
Sub 1 GHz
Sub 1 GHz
Sub 1-GHz node application
Exosite API
EasyLink API
SSL
NDK
TI-RTOS
NFC
TI-RTOS
TivaWare
TRF7970A
(NFC transceiver BoosterPack)
I2C
CC13xxWare
UART
TM4C123*;/ /DXQFK3DGŒ
CC13xx BoosterPack
Copyright © 2016, Texas Instruments Incorporated
Figure 21. Sub-1GHz Node Software Architecture Design
TM4C123x software blocks:
• TivaWare C: allows for TM4C hardware register access and serial communications to other hardware
through UART and I2C
• Interface API: allows the TM4C123x to communicate to the Sub-1GHz, NFC hardware mounted on it
using the on-board UART and I2C serial peripherals
• TI-RTOS: used for scheduling tasks, which handle communication with
– Hardware peripherals (Sub-1GHz, NFC)
– Command line interface
Sub-1GHz software blocks:
• TI-RTOS: for general scheduling
– Manages the command and response handling over the UART
– Operates the Sub-1GHz peripheral
• CC13xxWare: performs CC13xx hardware access and the UART operation
• EasyLink API: supports the Sub-1GHz protocol
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Exosite Architecture
3.5.1
SSL/TLS Security
The gateway connects to the Exosite using TI-RTOS NDK. This connection is secured using wolfSSL TLS
routines.
3.5.2
Exosite CIK Infrastructure
The TM4C crypto connected LaunchPad EK-TM4C129EXL, which is used as a gateway for this demo,
has to be registered on TI's Exosite portal as explained in Section 5.2. When a device is registered with
Exosite, that device is allotted a CIK, which is a unique identifier of that device. Only a device having a
valid CIK can connect to the Exosite cloud and exchange data.
3.5.3
Data Exchange Mechanism
Exosite can store the values in the form of dataports on the server. These dataports are basically the
server’s version of variables. The widgets on the portal dashboard (Exosite GUI) are used to modify these
dataports or to display the value of these dataports on the same GUI.
The gateway periodically synchronizes with the cloud to achieve the following:
• Uploading local variables' values to the intended dataports on the Exosite server. These local variables
contain the SensorTag data or data from BLE and Sub-1GHz nodes.
• Downloading the values of the intended dataports and copying them into local variables. Based on the
values received from Exosite, a specific command is sent to the appropriate Wi-Fi or BLE. Sub-1GHz
nodes to toggle LEDs, control motor, LED blinking rate, and so on.
Table 12. Dataports Used
NODE
Wi-Fi node
BLE SensorTag
DATAPORT NAME
wifi_node1_e2g
wifi_node1_g2e
1: Connected to gateway, 0: Disconnected
ble_sentag_e2g
1: Connected to gateway, 2: Disconnected
ble_sentag_g2e
CON0AMT0.000IRT0.000HUM0.000BAR0.00LUX0.000
• CON—Connection status (1: Connected to gateway, 0: Disconnected)
• AMT—Ambient temperature value
• IRT—IR temperature value
• HUM—Humidity value
• BAR—Atmospheric pressure value
• LUX—Luminosity value
ble_node1_e2g
LDB2ANM30:
• LDB—Toggle LED on BLE node (1: ON, 2: OFF)
• ANM—Change LED blinking rate (1 to 100)%
ble_node1_g2e
CON0BTA0BTB0TMC0TMF0:
• CON—Connection with gateway status (1: Connected, 0: Disconnected)
• BTA—Button1 press count
• BTB—Button2 press count
• TMC—Junction temperature in Celsius
• TMF—Junction temperature in Fahrenheit
BLE node
30
DATAPORT VALUE FORMAT
LED2MOD1DIR1SPD30MSV100RFS100RUN2:
• LED—Toggle LED on Wi-Fi node (1: ON, 2: OFF)
• MOD—Change Mode for stepper motor (1: Full-step, 2: Half-step, 3: Micro-step)
• DIR—Change direction of stepper motor (1: Clockwise, 2: Counter-clockwise)
• SPD—Change the speed of stepper motor. (1 to 100)%
• MSV—Provide the value of microsteps if mode is "micro-stepping" (1 to 255)
• RFS—Value of fixed number of steps if it is run as such. [1-999]
• RUN—Choose if the motor is run freely or for fixed no of steps (1: Run freely, 2:
Stop, 3: Run for fixed no of steps, 4: Run for fixed no of steps and reverse)
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Table 12. Dataports Used (continued)
NODE
DATAPORT NAME
DATAPORT VALUE FORMAT
sub_node1_e2g
LDB2ANM30:
• LDB—Toggle LED on BLE node (1: ON, 2: OFF)
• ANM—Change LED blinking rate (1 to 100)%
sub_node1_g2e
CON0BTA0BTB0TMC0TMF0:
• CON—Connection with gateway status (1: Connected, 0: Disconnected)
• BTA—Button1 press count
• BTB—Button2 press count
• TMC—Junction temperature in Celsius
• TMF—Junction temperature in Fahrenheit
sub_node2_e2g
LDB2ANM30:
• LDB—Toggle LED on BLE node (1: ON, 2: OFF)
• ANM—Change LED blinking rate (1 to 100)%
sub_node2_g2e
CON0BTA0BTB0TMC0TMF0:
• CON—Connection with gateway status (1: Connected, 0: Disconnected)
• BTA—Button1 press count
• BTB—Button2 press count
• TMC—Junction temperature in Celsius
• TMF—Junction temperature in Fahrenheit
Sub-1GHz node 1
Sub-1GHz node 2
NOTE: 'e2g' indicates that this dataport’s value is meant to be sent from Exosite to the gateway.
Similarly, 'g2e' indicates that the dataport value on Exosite is to be updated by the gateway.
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Software Setup
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4
Software Setup
4.1
Software Requirements
These tools and software packages are required to build and test access point and station projects:
• Code Composer Studio™ (http://www.ti.com/tool/ccstudio)
• CC2650 BLE Stack-2 (http://www.ti.com/tool/ble-stack-archive)
• Tl-RTOS for CC2650 v2.11.01.09. (C26xxWare is included) TI RTOS Download Link
• Tl-RTOS for CC13xx v2.14.03.28. (C13xxWare is included) TI RTOS Download Link
• TivaWare_C v2. 1.1.71 (http://www.ti.com/tool/sw-tm4c)
• TI-RTOS for TIVA v2.14.00.10 TI RTOS Download Link
• wolfSSL for TI-RTOS (https://github.com/wolfSSL/wolfssl)
NOTE: The BLE demonstration is not compatible with BLE-STACK-2-1 (http://www.ti.com/tool/blestack).
The BLE demonstration is not compatible with tirtos_simplelink version 2.12.x, 2.13.x, or
2.14.x due to the UART driver changes in these releases. TI recommends using 2.11.01.09
for this demonstration inspite of installing version 2.14.03.28 that supports both CC13xx and
CC26xx Family.
TI recommends installing these packages in the default location under C:\ti to avoid making any changes
in the CCS project.
4.2
Building Software Stack
The required software with CCS projects for the demonstration of this application including both Gateway
and the Node software can be downloaded from TIDM-TM4C129XGATEWAY Software. The projects
under following folders are necessary to build specific subsystems:
• Gateway
• BLE_Node
• Sub1GHz_Node
• WIFI_Node
For an example, follow these steps to import projects into the CCS workspace to build the binaries
required for the application:
1. Go to File → Import → CCS Project.
2. Browse folders to
{TIDM_TM4C_Gateway_WiFi_BLE_Sub1GHz}\Project_Source\Gateway\TM4C129x\}.
3. Import all the projects into the workspace.
4. Build all the projects except Gateway_Main_App because Gateway_Main_App project depends on .lib
output of other projects under folder Gateway. Then, build Gateway_Main_App. Executables can be
found in debug folder of Gateway_Main_App.
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Figure 22. Importing CCS Projects for Gateway
4.3
Demo Executables List
The executable are also distributed along with the project source under folder Executables
Table 13. Gateway Executables
DEVICE
NAME OF EXECUTABLE
GATEWAY EXECUTABLES
TM4C129EXL
Gateway_Main_App.out
CC2650EM
TM4C_CC26xx_Demo_CentralStack.out
TM4C_CC26xx_Demo_Central.out
CC1310EM
CC13xx_Master.out
CC3100
Latest service pack
WI-FI NODE EXECUTABLES
TM4C123GXL
wifi_microstepping_stepper_motor.out
CC3100
Latest service pack
BLE NODE EXECUTABLES
TM4C123GXL
TM4C_BLE_NFC_Node.out
TM4C_CC26xx_Demo_PeripheralStack.out
TM4C_CC26xx_Demo_Peripheral.out
CC2650EM
SUB-1GHz NODE EXECUTABLES
TM4C123GXL
TM4C_SubG_NFC_Node.out
CC1310EM
CC13xx_Node.out
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Installing the Demo
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5
Installing the Demo
5.1
Setting up Subsystems
Table 14. Setting up Subsystems
PART
TO DO
GATEWAY SUBSYSTEM
TM4C129EXL (Crypto Connected
LaunchPad)
Flash <Gateway_Main_App.out> using CCS/Uniflash.
CC3100 (Wi-Fi BoosterPack)
Use Uniflash to program the CC3100 with the latest service pack.
Visit the following URL and search for "Service Pack Programming".
https://www.processors.wiki.ti.com/index.php/CC31xx_%26_CC32xx_UniFlash_Quick_Start
_Guide
CC2650EM (BLE Device)
Use Uniflash/RFProgrammer and SmartRF06 to program
TM4C_CC26xx_Demo_CentralStack.out and then TM4C_CC26xx_Demo_Central.out onto
the CC2650 EM device.
CC13100EM (Sub-1GHz Device)
Use Uniflash/RFProgrammer and SmartRF06 to program CC13xx_Master.out onto the
CC1310 device.
WI-FI NODE SUBSYSTEM
TM4C123x (TIVA-C LaunchPad)
Flash wifi_microstepping_stepper_motor.out using CCS/Uniflash.
CC3100 (Wi-Fi BoosterPack)
Use Uniflash to program the CC3100 with the latest service pack.
Visit the following URL and search for "Service Pack Programming".
https://www.processors.wiki.ti.com/index.php/CC31xx_%26_CC32xx_UniFlash_Quick_Start
_Guide
BLE NODE SUBSYSTEM
TM4C123x (TIVA-C LaunchPad)
Flash TM4C_BLE_NFC_Node.out using CCS/Uniflash.
CC2650EM (BLE Device)
Use Uniflash or RF Programmer and SmartRF06 to program first
TM4C_CC26xx_Demo_PeripheralStack.out and then TM4C_CC26xx_Demo_Peripheral.out
onto the CC26750 EM device
SUB-1GHz NODE SUBSYSTEM
34
TM4C123x (TIVA-C LaunchPad)
Flash TM4C_SubG_NFC_Node.out using CCS/Uniflash.
CC2650EM (BLE Device)
Use Uniflash or RF Programmer and SmartRF06 to program CC13xx_Node.out onto the
CC1310 EM device.
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5.2
Setting up Exosite
The Exosite cloud platform provides a dashboard to interact with the gateway and the slaves connected to
the gateway. The user can send commands to execute tasks like toggling LED on nodes, drive a stepper
motor connected to a node, and collect data from the nodes. The devices that run the gateway code
(TM4C129x) need to be registered with Exosite because gateway handles all the communication with the
Exosite cloud portal. The "MAC Address" of the gateway device (printed on the back of TM4C129x) is
required for registration.
Cloud service is a trivial component in this demo, so go though the information provided in Section 1.11
before proceeding with setting up Exosite for the demo.
Follow these steps to register the device (TM4C129) to use as a gateway to the Exosite portal:
1. Go to https://ti.exosite.com.
2. Register an account for first-time users and log in.
3. Click on "Devices" in the left-hand menu and click on the "Add Device" button.
4. Select the "TM4C based Secure Cloud Connected IoT Gateway" device to add from the "Supported
Devices" drop-down list. Then click "Continue".
5. Fill in the details of the board MAC, name, and location. Then click "Continue". Take note of the CIK
being displayed and then click "Quit".
The device is now registered with the Exosite server, but it still needs to be activated. The software
running on the gateway will achieve this once it is up and running. The following sections talk about the
connection, activation and execution of the demo.
6. Click on "Dashboards" in the left-hand side menu. Then, click on "IoT Gateway" under the "Portal
Dashboards" section. The dashboard as shown in Figure 23 should appear.
Figure 23. Exosite Dashboard Associated With Gateway Device Registered
NOTE:
For first time users of Exosite with TM4C crypto connected launchpad Secure IoT Demo
training video under section 2 will be a good start. This video contains information on how to
connect the board to Exosite, UART console settings, proxy settings etc in detail.
Some countries and/or firewalls may block access to some internet based content such as
google services. If this content is blocked, the Exosite based portion of the project will not
work as intended. In such cases the demo can be executed through command line interface.
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Demo Execution
6
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Demo Execution
All the individual subsystems of the demo must be set up and initialized before moving on to execute the
demo.
6.1
Connecting Gateway to Cloud Using Ethernet
1. Power off the TM4C129x CCLP.
2. Connect the CC3100 Wi-Fi BoosterPack on the BoosterPack-2 interface on the TM4C129 CCLP. See
Section 2.2.1 to verify the header connections.
3. Connect the EM Adapter BoosterPack to BoosterPack-1 Interface on TM4C129 CCLP. See
Section 2.2.1 to verify the header connections. Connect the CC2650 BLE Device to the EM Adapter
BoosterPack.
4. Connect the TRF7970A NFC Boosterpack to the EM Adapter BoosterPack, which is already connected
to the TM4C129 CCLP in the previous step. See Section 2.2.1 verify the header connections.
Figure 24. Connecting All Hardware Components of the Gateway
5. Connect the EM Adapter BoosterPack to BoosterPack-2 Interface on TM4C129 CCLP over the
CC3100 BoosterPack, which was connected in Step 2. See Section 2.2.1 to verify the header
connections. Connect the CC1310 Sub-1GHz device to this EM Adapter BoosterPack. Also mount the
antenna on the Sub-1GHz device.
6. Connect an Ethernet LAN cable to connect the gateway to a LAN port with working internet
connection.
7. Power on the board by connecting the TM4C129 CCLP to a power source using a USB cable to see
the LED2, LED3, and LED4 with all three flashing at regular intervals. LED1 should start flashing after
a few seconds once the gateway is connected to cloud. If LED1 does not flash or if the application is
run behind a proxy network, configure Proxy and NTP. See Section 6.7 for command line options.
8. Now go to the dashboard "IoT Gateway", which should display the gateway as "ONLINE" as shown in
Figure 25 if connected properly.
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Figure 25. IoT Gateway Dashboard Showing Gateway ONLINE
6.2
Connecting Wi-Fi Node to Gateway
1. Make sure the TM4C123 LP is powered off before proceeding.
2. Connect the TM4C123 LP and CC3100 Wi-Fi BoosterPack to the TM4C123 swizzle adapter board at
their designated BoosterPack interfaces. See Section 2.2.2 to verify header connections.
3. Connect the RF430 NFC Tag BoosterPack to the TM4C123 swizzle adapter board at its designated
location (recommended as shown in Figure 26). See Section 2.2.2 to verify header connections.
Figure 26. Connecting all Hardware Components of the Wi-Fi Node
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4. Now connect the DRV8833 stepper motor drive to the TM4C123 swizzle adapter board as shown in
Figure 27. Connect the +ve and –ve terminals of the external power supply to the DRV883 board using
the pins on the swizzle board. The DRV883 can also be powered from the 5-V pin in the TM4C123
LaunchPad header as shown with the red lines in Figure 27, provided the USB power source can
supply up to 2 A. Also, refer to the stepper motor’s user guide to connect the correct terminals of the
stepper motor (A, A, B, B) to their corresponding pins on DRV8833 board. See Section 2.2.2 to verify
header connections.
Swizzle board
DRV8833
Stepper motor
AIN1
1
2
AOUT1
BIN2
3
A
AOUT2
BIN1
4
B
BOUT2
B
BOUT1
DRV8833
AIN2
A
TM4C123
5
VDD
6
GND
7
CC3100
RF430
8
Copyright © 2016, Texas Instruments Incorporated
Figure 27. Connecting Swizzle Board, Stepper Motor, and External Power Supply to the
DRV8833 Driver Board
5. Supply power to the TM4C123 LP by connecting it to a power source using the USB cable. The white
color LED should flash once.
6. Tap the NFC tag on Wi-Fi node subsystem with the NFC transceiver on the gateway subsystem to
exchange Wi-Fi credentials. The LED on the TM4C123x LP turns blue to indicate that connection to
the gateway is in progress. Once the node connects to the gateway, this LED will turn to green;
otherwise, if the connection is not successful, the LED turns red. Tap again to retry.
On the gateway side, the LED3 should get switched on (green color) to indicate that the Wi-Fi slave is
connected.
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6.3
Connecting BLE Node to Gateway
1.
2.
3.
4.
Make sure that the TM4C123x LP is switched off before proceeding.
Connect the EM Adapter BoosterPack to the TM4C123x LP as shown in Figure 28.
Connect the CC2650 to the header present on the EM Adapter BoosterPack as shown.
Connect the RF430C330H NFC Tag to the EM Adapter BoosterPack as shown in Figure 28
(recommended).
Figure 28. Connecting All Hardware Components of the BLE Node
5. Supply power to the TM4C123 LP by connecting it to a PC using the USB cable. The green LED
should now flash at regular intervals.
6. Tap the NFC tag on the BLE node subsystem with the NFC transceiver on the gateway subsystem to
exchange credentials. The LED on TM4C123x LP turns from green to blue (and continues to blink at
regular intervals) to indicate that connection has been established with the gateway.
On the gateway side, the LED2 should turn on (green color) to indicate that the BLE slave is
connected.
6.4
Connecting SensorTag to Gateway
Connect the SensorTag to the gateway with the Exosite GUI and IoT gateway dashboard by clicking on
the "Connect" button in the SensorTag widget. In a few seconds, the widget should show the SensorTag
status as ONLINE. Before connecting to the gateway using Exosite GUI, the BLE SensorTag must be in
advertising mode.
To connect the SensorTag using command line, see Section 6.7.
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6.5
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Connecting Sub-1GHz Nodes to Gateway
1. Make sure that the TM4C123x LP is switched off before proceeding.
2. Connect the EM Adapter BoosterPack to the TM4C123x, and then connect the CC1310 to the header
present on the EM Adapter BoosterPack as shown in Figure 29.
3. Connect the RF430C330H NFC Tag to the EM Adapter BoosterPack as shown (recommended).
Figure 29. Connecting All Hardware Components of the Sub-1GHz Node
4. Supply power to the TM4C123 LP by connecting it to a power source using the USB cable. The green
LED should now flash at regular intervals.
5. Tap the NFC tag on the Sub-1GHz node subsystem with the NFC transceiver on the gateway
subsystem to exchange credentials.
6. The LED on the TM4C123x LP turns from green to blue (and continues to blink at regular intervals) to
indicate that the connection has been established with the gateway.
7. On the gateway side, the LED3 switches on permanently to indicate that the Sub-1GHz slave is
connected.
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6.6
Using GUI to Control Nodes From Exosite
Once all the nodes are connected to the gateway and the gateway is connected to Exosite properly, then
the IoT_Gateway dashboard on ti.exosite.com should resemble Figure 30. The widgets representing the
corresponding nodes should display under the ONLINE banner.
Figure 30. Exosite Dashboard With All Connected Widgets
6.6.1
Wi-Fi Node
The various controls on the Wi-Fi widget are as follows:
• LED toggle switch
• Motor mode switch [Half step | Full step | Micro-step]
• Micro-step value input [1 to 256] steps
• Motor direction switch [Clockwise | Anti-Clockwise]
• Motor speed input [0 to 100]%
• Motor run configuration switch [Start | Stop | Rotate fixed steps | Rotate fixed steps and reverse]
• Fixed step rotation value input [0 to 999]
6.6.2
BLE Node
The various controls on the BLE widget are as follows:
• LED toggle switch
• LED toggle rate input (animation value) [0 to 100]%
• Real-time TM4C123x junction temperature display
• Real-time button-press display
6.6.3
SensorTag
The various controls on the SensorTag widget are as follows:
• Connect or disconnect the SensorTag from the gateway
• Real-time sensor data display for Temperature, IR Temperature, Humidity, Atmospheric Pressure, and
Luminosity
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Sub-1GHz Node
The various controls on the Sub-1GHz widget are as follows:
• LED toggle switch
• LED toggle rate input (animation value) [0 to 100]%
• Real-time TM4C123x junction temperature display
• Real-time button-press display
6.7
Command Line Interface
The gateway demonstration can be performed through command line interface featuring the command set
listed in Table 15.
To use the following commands, follow these steps:
1. Power up the gateway by connecting it to a PC using USB cable.
2. Open a console terminal using software like Tera Term or RealTerm or Putty with settings [Serial COM
Port Connection | Bitrate 115200].
3. Press "Reset" on the gateway device to restart the gateway. The console will display some info as
shown in Figure 31.
Figure 31. Gateway Console Debug Output
4. Hit "Enter" to see a command prompt as shown in Figure 32. See Section 6.7.1 for a list of valid
commands accepted by the gateway.
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6.7.1
Generic CLI Commands
Figure 32. Command Prompt
Table 15. Generic CLI Commands
COMMAND
USAGE
DESCRIPTION
help
> help
Display list of commands
[h, ?]
>h
>?
Aliases for help
activate
> activate
Get a CIK from exosite
clear
> clear
Clear the display
connect
> connect
Tries to establish a connection with exosite
getmac
> getmac
Prints the current MAC address
ntp
> ntp <NTP Server IP Address>
Tries to connect to the provided IP during start-up to
sync time.
proxy
> proxy <Proxy IP Address> <Proxy Port
Number>
Set or disable a HTTP proxy server
led
> led on
> led off
Toggle LED D1 on gateway. Type "led help" for more
info.
wifi
> wifi ?
> wifi <option1><option2> and so on
WiFi node control command. Type "wifi ?" or "wifi help"
for usage info.
ble
> ble <option1> wifi ?
> ble ?
BLE node control command. Type "ble ?" or "ble help"
for usage info.
subg
> subg <option1><option2> and so on
> subg ?
Sub-1GHz node control command. Type "subg ?" or
"sub help" for usage info.
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6.7.2
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Controlling Nodes Using CLI Commands
The application demo can be executed locally in case the connection to the cloud is absent. Commands to
achieve that are described in Table 16:
NOTE: Contents in the square brackets [ ] indicate the options available for the respective
commands separated with a comma.
Table 16. Wi-Fi Node CLI Commands
COMMAND
DESCRIPTION
wifi led [on, off]
Toggle LED on BLE Node
wifi motor speed [0 to 100]
Change the speed of motor
wifi motor dir [clock, anti-clock]
Change the direction of motor
wifi motor mode [1 to 255]
Change the motor mode [1: Full Step, 2: Half Step, [3 to 255]: Micro Step]
wifi motor rfs [1 to 999]
Run fixed number of steps [Min: 1, Max: 999]
wifi motor rfr [1 to 999]
Run fixed number of steps and then reverse [Min: 1, Max: 999]
wifi motor run
Run the motor freely
wifi motor stop
Stop the motor
Table 17. BLE Node CLI Commands
COMMAND
DESCRIPTION
ble sensor-tag connect
Connect to SensorTag [SensorTag should be advertising]
ble sensor-tag disconnect
Disconnect form the SensorTag
ble sensor-tag status
Get the current status of SensorTag data
ble node led [on, off]
Toggle LED on BLE node
ble node animation [0 to 100]
Change the rate of blinking of led on BLE node
ble node status
Get the current status of Data coming from BLE node
Table 18. Sub-1GHz Node CLI Commands
COMMAND
44
DESCRIPTION
sub [node1, node2] led [on, off]
Toggle LED on one of the Sub-1GHz nodes
sub [node1, node2] animation [0 to
100]
Change the rate of blinking of led on one of the Sub-1GHz nodes
sub [node1, node2] status
Get the current status of data coming from one of the Sub-1GHz nodes
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Design Files
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7
Design Files
7.1
Schematics
To download the schematics, see the design files at TIDM-TM4C129XGATEWAY.
7.2
Bill of Materials
To download the bill of materials (BOM), see the design files at TIDM-TM4C129XGATEWAY.
7.3
PCB Layout Recommendations
Any additional note you think the customer would need to layout this board; also add details on the
reasoning behind your layout (form factor, heat distribution, and so on.)
7.3.1
Layout Prints
To download the layer plots, see the design files at TIDM-TM4C129XGATEWAY.
7.4
Altium Project
To download the Altium project files, see the design files at TIDM-TM4C129XGATEWAY.
7.5
Gerber Files
To download the Gerber files, see the design files at TIDM-TM4C129XGATEWAY.
7.6
Assembly Drawings
To download the assembly drawings, see the design files at TIDM-TM4C129XGATEWAY.
8
Software Files
To download the software files, see the design files at TIDM-TM4C129XGATEWAY.
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References
9
www.ti.com
References
1. Texas Instruments, Tiva™ TM4C123GH6PM Microcontroller, Datasheet (SPMS376)
2. Texas Instruments, DRV8833 Dual H-Bridge Motor Driver, DRV8833 Datasheet (SLVSAR1)
3. Texas Instruments, CC3100 SimpleLink™ Wi-Fi® and IoT Solution Getting Started Guide, User's
Guide (SWRU375)
4. Texas Instruments, ARM® Cortex®-M4F Based MCU TM4C123G LaunchPad™ Evaluation Kit, EKTM4C123GXL Product Page (http://www.ti.com/tool/EK-TM4C123GXL)
5. Texas Instruments, DRV8833 Evaluation Module User's Guide (SLVU498)
6. Texas Instruments, SimpleLink™ Wi-Fi® CC3100 wireless network processor BoosterPack™ plug-in
module (http://www.ti.com/tool/cc3100boost)
7. Texas Instruments, TivaWare™ Sensor Library, User's Guide (SPMU371)
8. Texas Instruments, SimpleLink Wi-Fi CC3100 SDK (http://www.ti.com/tool/cc3100sdk)
9. Texas Instruments, Stellaris® In-Circuit Debug Interface (ICDI) and Virtual COM Port Driver Installation
Instructions, Quick Start Guide (SPMU287)
10. Texas Instruments, CC31xx & CC32xx UniFlash Quick Start Guide, TI Wiki
(http://processors.wiki.ti.com/index.php/CC31xx_%26_CC32xx_UniFlash_Quick_Start_Guide)
11. Texas Instruments, High Resolution Microstepping Driver With the DRV88xx Series, Application
Report (SLVA416)
12. Texas Instruments, TM4C1294x Wi-Fi Enabled IoT Node, TIDM-TM4C129XWIFI Design Guide
(TIDU992)
10
About the Author
SUDHAKAR SINGH is a software engineer in the Performance Microcontroller group at Texas
Instruments, where he primarily works on TM4C software development, customer support, and reference
design development. Sudhakar received his bachelor of engineering in computer science and engineering
from the PEC University of Technology, India.
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NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (August 2016) to A Revision ..................................................................................................... Page
•
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