GigaDevice Semiconductor GD32EPRTV-START User Manual

GigaDevice Semiconductor Inc.
GD32EPRTV-START
User Guide
V1.0
User Guide
GD32EPRTV-START
Tables of Contents
TABLES OF CONTENTS ................................................................................................ 1
LIST OF FIGURES .......................................................................................................... 3
LIST OF TABLES ............................................................................................................ 4
1. SUMMARY ................................................................................................................ 5
2. FUNCTION PIN ASSIGN ........................................................................................... 5
3. GETTING STARTED ................................................................................................. 5
4. HARDWARE LAYOUT OVERVIEW .......................................................................... 6
4.1.
4.2.
4.3.
4.4.
4.5.
4.6.
4.7.
4.8.
4.9.
Power supply ............................................................................................................... 6
Boot option .................................................................................................................. 6
LED ............................................................................................................................... 6
KEY ............................................................................................................................... 6
USART .......................................................................................................................... 7
USB............................................................................................................................... 7
Extension ..................................................................................................................... 7
GD-Link ........................................................................................................................ 8
MCU .............................................................................................................................. 9
5. ROUTINE USE GUIDE ............................................................................................ 10
5.1.
GPIO_Running_LED .................................................................................................. 10
5.1.1.
DEMO purpose ..................................................................................................................... 10
5.1.2.
DEMO running result ............................................................................................................ 10
5.2.
GPIO_Key_Polling_mode .......................................................................................... 10
5.2.1.
DEMO purpose ..................................................................................................................... 10
5.2.2.
DEMO running result ............................................................................................................ 10
5.3.
EXTI_Key_Interrupt_mode ........................................................................................ 11
5.3.1.
DEMO purpose ...................................................................................................................... 11
5.3.2.
DEMO running result ............................................................................................................. 11
5.4.
USART_HyperTerminal_Interrupt ............................................................................. 11
5.4.1.
DEMO purpose ...................................................................................................................... 11
5.4.2.
DEMO running result ............................................................................................................. 11
5.5.
TIMER_Key_EXTI ....................................................................................................... 12
5.5.1.
DEMO purpose ..................................................................................................................... 12
5.5.2.
DEMO running result ............................................................................................................ 12
5.6.
SQPI_PSRAM ............................................................................................................. 12
5.6.1.
DEMO purpose ..................................................................................................................... 12
5.6.2.
DEMO running result ............................................................................................................ 13
5.7.
USBD_CDC_ACM ...................................................................................................... 13
5.7.1.
DEMO purpose ..................................................................................................................... 13
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5.7.2.
DEMO running result ............................................................................................................ 13
6. REVISION HISTORY ............................................................................................... 15
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List of Figures
Figure 4-1. Schematic diagram of power supply ...................................................................................... 6
Figure 4-2. Schematic diagram of boot option ......................................................................................... 6
Figure 4-3. Schematic diagram of LED function ...................................................................................... 6
Figure 4-4. Schematic diagram of Key function ....................................................................................... 6
Figure 4-5. Schematic diagram of USART ................................................................................................ 7
Figure 4-6. Schematic diagram of USB ..................................................................................................... 7
Figure 4-7. Schematic diagram of Extension ............................................................................................ 7
Figure 4-8. Schematic diagram of GD-Link ............................................................................................... 8
Figure 4-10. Schematic diagram of MCU ................................................................................................... 9
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List of Tables
Table 2-1. Function pin assignment ........................................................................................................... 5
Table 6-1. Revision history ....................................................................................................................... 15
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1.
Summary
GD32EPRTV-START uses GD32EPRTVDT6 as the main controller. It uses GD-Link Mini
USB interface to supply 5V power. Reset, Boot, K2-User Key, LED, USB and USART to USB
interface are also included. For more details please refer to GD32EPRTV-START-Rev1.0
schematic.
2.
Function Pin Assign
Table 2-1. Function pin assignment
Function
Pin
Description
LED
PC6
LED1
RESET
KEY
USART
USB
3.
K1-Reset
PA0
User Key
PB6
USART0_TX
PB7
USART0_RX
PA11
USB_DM
PA12
USB_DP
PA9
USB Pull-up Control
Getting started
The START board uses GD-Link Mini USB connecter to get power DC +5V, which is the
hardware system normal work voltage. A GD-Link on board is necessary in order to download
and debug programs. Select the correct boot mode and then power on, the LEDPWR will turn
on, which indicates the power supply is OK.
There are Keil version and IAR version of all projects. Keil version of the projects are created
based on Keil MDK-ARM 5.26 uVision5. IAR version of the projects are created based on IAR
Embedded Workbench for ARM 8.32.1. During use, the following points should be noted:
1. If you use Keil uVision5 to open the project. In order to solve the "Device Missing (s)"
problem, you can install GigaDevice.GD32EPRT_DFP.1.1.0.pack.
2. If you use IAR to open the project, install IAR_GD32EPRT_ADDON_1.1.0.exe to load the
associated files.
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4.
Hardware layout overview
4.1.
Power supply
Figure 4-1. Schematic diagram of power supply
P1
+5V
16V/10uF,AVX
Vin
E1
AMS1117-3.3
2 16V/10uF,AVX
Vout
4
E2
C11
+3V3
R7
470Ω
LEDPWR
LED0603
1
SMD1210P050F
U2
3
G
+U5V
50V/0.1uF
GND
4.2.
Boot option
Figure 4-2. Schematic diagram of boot option
JP3
3
2
1
GNDR4
BOOT0
+3V3 10KΩ
BOOT0
JP4
3
2
1
GNDR5
BOOT1
+3V3 10KΩ
BOOT1
4.3.
LED
Figure 4-3. Schematic diagram of LED function
LED
PC6
LED1
R10
GND
470Ω
4.4.
LED0603
KEY
Figure 4-4. Schematic diagram of Key function
+3V3
R11
10KΩ
PA0
KEY
K2
K-1102B
C14
50V/0.1uF
GND
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4.5.
USART
Figure 4-5. Schematic diagram of USART
USART To USB
+3V3 C19
USB_MiniAB receptacle
CN3
VBUS
DM
DP
ID
GND
1
2
3
4
5
U3
DD+
D+
D-
1
2
3
4
5
UD+
V3
UDRXD
GND
TXD
RTS# VCC
CTS# TNOW
10
9
8
7
6
50V/0.01uF
UART_TX PB6
UART_RX PB7
+3V3
C20
CH340E
50V/0.1uF
Shield
6
Mini_USB
C21
R17
1MΩ
50V/4700pF
4.6.
USB
Figure 4-6. Schematic diagram of USB
USB
USB_DM
USB_DP
R12
R13
R14
1
2
3
4
5
22Ω
22Ω
1.5KΩ
VBUS
DM
DP
ID
GND
GND
C16
USB_MiniAB receptacle
CN2
PA11
PA12
PA9
6
Shield
R15 Mini_USB
1MΩ
50V/4700pF
4.7.
Extension
Figure 4-7. Schematic diagram of Extension
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GD32EPRTV-START
Extension Pin
JP5
PC0
PC2
PA1
PA3
PA5
PA7
PC5
PB1
PE8
PE10
PE12
PE14
PB10
PB12
PB14
PD8
PD10
PD12
PD14
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
+3V3
JP6
PC1
PC3
PA2
PA4
PA6
PC4
PB0
PE7
PE9
PE11
PE13
PE15
PB11
PB13
PB15
PD9
PD11
PD13
PD15
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
PE6
PE4
PE2
PE0
PB8
PB6
PB4
PD7
PD5
PD3
PD1
PC12
PC10
PA15
PA13
PA8
PC8
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
+3V3
+5V
GND
HEADER 20X2
4.8.
PC13
PE5
PE3
PE1
PB9
PB7
PB5
PB3
PD6
PD4
PD2
PD0
PC11
PA14
PA10
PC9
PC7
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
GND
HEADER 20X2
GD-Link
Figure 4-8. Schematic diagram of GD-Link
U0
10
11
12
13
14
15
16
17
MCU SWD
L_TMS/IO
L_TCK/CLK
L_TDO/SWO
L_TDI
+3V3 JP100
1
2
3
4
L_SWDIO
L_SWDCK
L_USB_Ctr
29
30
31
32
33
34
37
38
4×1P2.54
GND
Reset
L_USB_DM
L_USB_DP
L_SWDIO
L_SWDCK
+3V3
C100
L_OSC_IN
GND
L_OSC_IN 5
L_OSC_OUT 6
49S-8MHz
50V/20pF
C102
Y101
R101
1MΩ
L_OSC_OUT
50V/20pF
R102
10KΩ
L_NRST
R104
44
10KΩ
L_NRST
7
GND
C103
50V/0.1uF
1
24
36
48
GND
9
+3V3
PA0-WKUP
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2/BOOT1
PB3/JTDO
PB4/JNTRST
PB5
PB6
PB7
PA8
PA9
PA10
PA11
PA12
PA13/JTMS/SWDIO
PA14/JTCK/SWCLK
PA15/JTDI
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
18
19
20
39
40
41
42
43
R103
GND
10KΩ
45
46
21
22
25
26
27
28
L_TReset
L_LED2R110
L_LED1R109
2
PC13-TAMPER-RTC
3
PC14-OSC32_IN
4
PC15-OSC32_OUT
OSC_IN/PD0
OSC_OUT/PD1
LED0603
L_LED2
470Ω
470Ω
L_LED1
LED0603
GND
BOOT0
NRST
VBAT
VDD_1
VDD_2
VDD_3
VSS_1
VSS_2
VSS_3
VDDA
VSSA
23
35
47
8
GD32F103C8T6
GND
CN100
VCC
DD+
ID
GND
SHELL
+U5V
1
2
3
4
5
6
R105
R106
R107
22Ω L_USB_DM
22Ω L_USB_DP
1.5KΩ L_USB_Ctr
+3V3
GND
C105
Mini_USB
C106
C107
C108
50V/0.1uF 50V/0.1uF 50V/0.1uF 50V/0.1uF
R108
1MΩ
C104
50V/4700pF
GND
GND
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GD32EPRTV-START
4.9.
MCU
Figure 4-9. Schematic diagram of MCU
U1
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
SWD
SWD
+3V3 JP1
GDLink
1
2
3
4
JTMS/SWDIO
L_TMS/IO
JTCK/SWDCLK L_TCK/CLK
NRST
L_TReset
4×1P2.54
GND
PA13
PA14
PA8
67
PA9
68
PA10 69
PA11 70
PA12 71
JTMS/SWDIO 72
JTCK/SWDCLK76
PA15 77
PB0
PB1
BOOT1
PB3
PB4
PB5
PB6
PB7
35
36
37
89
90
91
92
93
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
95
96
47
48
51
52
53
54
OSC_IN
OSC_OUT
12
13
PB2
C8
49S-8MHz
50V/20pF
C9
GND
Y2
23
24
25
26
29
30
31
32
R3
1MΩ
50V/20pF
BOOT0
94
NRST
14
20
21
+3V3
NC
+3V3
6
+3V3
R6
10KΩ
K1
NRST
K-1102B
C10
73
50
75
100
28
11
22
PA0-WKUP
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13/JTMS/SWDIO
PA14/JTCK/SWCLK
PA15/JTDI
PB0
PB1
PB2/BOOT1
PB3/JTDO
PB4/JNTRST
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
OSC_IN
OSC_OUT
BOOT0
NRST
VREFVREF+
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
65
PC8
66
PC9
78
PC10
79
PC11
80
PC12
7
PC13-TAMPER-RTC
8
PC14-OSC32_IN
9
PC15-OSC32_OUT
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
VBAT
PE8
PE9
PE10
PE11
PE12
PE13
PE14
PE15
VDD_1
VDD_2
VDD_3
VDD_4
VDD_5
VSS_1
VSS_2
VSS_3
VSS_4
VSS_5
VDDA
VSSA
NC
15
16
17
18
33
34
63
64
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC8
PC9
PC10
PC11
PC12
PC13
OSC32_IN
OSC32_OUT
81
82
83
84
85
86
87
88
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
55
56
57
58
59
60
61
62
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
97
98
1
2
3
4
5
38
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
39
40
41
42
43
44
45
46
PE8
PE9
PE10
PE11
PE12
PE13
PE14
PE15
49
74
99
27
10
C6
32.768KHz
Y1
50V/10pF
C7
GND
50V/10pF
+3V3
C1
C2
C3
C4
C5
50V/0.1uF 50V/0.1uF 50V/0.1uF 50V/0.1uF 50V/0.1uF
GND
+3V3
C12
50V/0.1uF
+3V3
C15
50V/0.01uF
C13
50V/0.1uF
C17
50V/0.01uF
GND
19
GD32EPRTVDT6
50V/0.1uF
GND
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5.
Routine use guide
5.1.
GPIO_Running_LED
5.1.1.
DEMO purpose
This demo includes the following functions of GD32 MCU:

Learn to use GPIO control the LED

Learn to use SysTick to generate 1ms delay
GD32EPRTV-START-V1.0 board has 2 keys and 1 LED. The keys are User Key and Reset
Key. The LED is controlled by GPIO.
This demo will show how to light the LED.
5.1.2.
DEMO running result
Download the program < 01_GPIO_Running_LED > to the START board, LED can light
cycles.
5.2.
GPIO_Key_Polling_mode
5.2.1.
DEMO purpose
This demo includes the following functions of GD32 MCU:

Learn to use GPIO control the LED and the KEY

Learn to use SysTick to generate 1ms delay
GD32EPRTV-START-V1.0 board has 2 keys and 1 LED. The keys are User Key and Reset
Key. The LED are controlled by GPIO.
This demo will show how to use the User Key to control the LED1. When press down the User
Key, it will check the input value of the IO port. If the value is 0 and will wait for 100ms. Check
the input value of the IO port again. If the value still is 0, it indicates that the button is pressed
successfully and toggle LED1.
5.2.2.
DEMO running result
Download the program < 02_GPIO_Key_Polling_mode > to the START board, press down
the User Key, LED1 will be turned on. Press down the User Key again, LED1 will be turned
off.
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5.3.
EXTI_Key_Interrupt_mode
5.3.1.
DEMO purpose
This demo includes the following functions of GD32 MCU:

Learn to use GPIO control the LED and the KEY

Learn to use EXTI to generate external interrupt
GD32EPRTV-START-V1.0 board has 2 keys and 1 LED. The keys are User Key and Reset
Key. The LED is controlled by GPIO.
This demo will show how to use the EXTI interrupt line to control the LED1. When press down
the User Key, it will produce an interrupt. In the interrupt service function, the demo will toggle
LED1.
5.3.2.
DEMO running result
Download the program < 03_EXTI_Key_Interrupt_mode > to the START board, LED1 is
turned on and off for test. When press down the User Key, LED1 will be turned on. Press
down the User Key again, LED1 will be turned off.
5.4.
USART_HyperTerminal_Interrupt
5.4.1.
DEMO purpose
This demo includes the following functions of GD32 MCU:

Learn to use the USART transmit and receive interrupts to communicate with the
HyperTerminal.
5.4.2.
DEMO running result
Download the program <04_USART_HyperTerminal_Interrupt> to the START board, connect
serial cable to USART. Firstly, the LED1 flash 2 times for test. Then, the USART sends the
tx_buffer array (from 0x00 to 0xFF) to the hyperterminal and waits for receiving data from the
hyperterminal that you must send. The string that you have sent is stored in the rx_buffer
array. The receive buffer have a BUFFER_SIZE bytes as maximum. After that, compare
tx_buffer with rx_buffer. If tx_buffer is same with rx_buffer, LED1 flash. Otherwise, LED1 on.
The output information via the HyperTerminal is as following:
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5.5.
TIMER_Key_EXTI
5.5.1.
DEMO purpose
This demo includes the following functions of GD32 MCU:

Learn to use GPIO control the LED and the KEY

Learn to use EXTI to generate external interrupt

Learn to use TIMER to generate PWM
GD32EPRTV-START-V1.0 board has 2 keys and 1 LED. The keys are User Key and Reset
Key. The LED is controlled by GPIO.
This demo will show how to use the TIMER PWM to trigger EXTI interrupt to toggle the state
of LED1 and EXTI interrupt line to control the LED1. When press down the User Key, it will
produce an interrupt. In the interrupt service function, the demo will toggle LED1.
5.5.2.
DEMO running result
Download the program < 05_TIMER_Key_EXTI > to the START board, the LED1 is flashed
once for test, press down the User Key, LED1 will be turned on. Press down the User Key
again, LED1 will be turned off. Connect PA6 (TIMER2_CH0) and PA4 with DuPont line. The
LED1 will be toggled every 500ms.
5.6.
SQPI_PSRAM
5.6.1.
DEMO purpose
This demo includes the following functions of GD32 MCU:

Learn to use the SQPI unit to read and write PSRAM with the SQPI interface
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5.6.2.
DEMO running result
The computer serial port line connected to the USART port of START board, set the baud rate
of HyperTerminal software to 115200, 8 bits data bit, 1 bit stop bit.
Download the program <06_SQPI_PSRAM> to the START board, the HyperTerminal
software can observe the operation condition, 256 bytes data which are written to and read
from PSRAM. Compare the data that were written to the PSRAM and the data that were read
from the PSRAM. If they are the same, the serial port will output “SQPI read and write
operation success”, otherwise, the serial port will output “SQPI read and write operation error”.
5.7.
USBD_CDC_ACM
5.7.1.
DEMO purpose
This demo includes the following functions of GD32 MCU:

Learn how to use the USBD peripheral

Learn how to implement USB CDC device
GD32EPRTV-START-V1.0 board has one USBD interface. In this demo, the GD32EPRTVSTART-V1.0 board is enumerated as an USB virtual COM port, which was shown in device
manager of PC as below. This demo makes the USB device look like a serial port, and loops
back the contents of a text file over USB port. To run the demo, input a message using the
PC's keyboard. Any data that shows in HyperTerminal is received from the device.
5.7.2.
DEMO running result
Download the program <07_USBD_CDC_ACM> to the board and run. When you input
message through computer keyboard, the HyperTerminal will receive and shown the message.
For example, when you input “GigaDevice MCU”, the HyperTerminal will get and show it as
below.
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6.
Revision history
Table 6-1. Revision history
Revision No.
Description
1.0
Initial Release
Date
Sep.4, 2020
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GD32EPRTV-START
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