STMicroelectronics STR755FR2 User Manual
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UM0224
User manual
STR75x Demonstration Software
Introduction
This document describes the demonstration software running on the STR75x-EVAL evaluation board, which you can use to evaluate the capabilities of the microcontroller and the on-board peripherals.
The demonstration software contains a main application divided into various smaller applications. The demonstration software is already stored in the embedded flash memory of the microcontroller and could be downloaded from http:\\www.st.com\mcu then programmed into the STR75x flash.
September 2006 Rev 1 1/34 www.st.com
Contents
Contents
STR75x demonstration software
10-bit analog to digital converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Running the demonstrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SMI Flash memory organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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STR75x demonstration software
Contents
Period measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
USB mouse demo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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Functional description STR75x demonstration software
The STR75x microcontroller evaluation board provides a development and demonstration platform for STR75x-based applications. It is designed to allow you to try out the major functions of the STR75x microcontroller.
The following picture summarizes the main functional blocks of the evaluation board:
Figure 1.
Evaluation board overview
Power supply
and Reset
JTAG
BOOT option
UART0
DB9male connector
RS232
Tranceiver
UART1
DB9male connector
RS232
Tranceiver
UART2
DB9male connector
Inductor Motor
Control connector
RTC 32KHz
Crystal
JTAG
BOOT
UART0
UART1
STR75x
UART2
PWM
RTC
ADC
TIM(PWM)
SSP / SMI
CAN
USB
GPIO
Audio
circuit
SPI 64Mbit
Serial Flash
3.3V CAN
Tranceiver
DB9male connector
USB ESD protection
USB type B connector
Graphic LCD
module
Joystick
Extention connector for total 72 GPIOs
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STR75x demonstration software Functional description
The evaluation board is powered by an external 5V supply all other required voltage are provided by on-board voltage regulators.
1.2 Clocking
●
●
●
Three clock sources are available on STR75x-EVAL evaluation board for STR750Fx, USB and RTC:
32 kHz Crystal for embedded RTC.
4 MHz Crystal for STR750Fx.
48 MHz Oscillator for USB.
●
●
The Reset can be generated by hardware or software sources:
Reset button: activates the RESET input when pressed.
A JTAG reset
Software debug is done via the standard ARM JTAG connection: 20 pins IDC to connect to the standard ARM host interface.
1.5 Displays and input devices
1.5.1 LCD
122x32 graphic LCD display connected to GPIOs.
1.5.2 LED
4 general purpose LED’s are available as display device.
1.5.3 Joystick
4-direction joystick with selection key.
1.6 Interfaces
1.6.1 RS232
The STR75x evaluation board (STR75x-EVAL) provides three on-board RS-232 serial ports.
Two channels, UART1 and UART2, use one RS-232 transceiver U12.
For the UART0 with handshake signal support, it uses another RS-232 transceiver.
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Functional description STR75x demonstration software
Both these RS232 ports are terminated by DB9 connectors.
1.6.2 CAN
STR75x-EVAL evaluation board supports CAN2.0A/B complaint CAN bus communication based on 3.3V CAN transceiver. Both High-speed mode and slope control mode are available and can be selected by setting a dedicated jumper.
STR75x-EVAL evaluation board supports inductor motor control via a 34-pins connector, which provides all required control and feedback signals to and from motor power-driving board.
1.8.1 10-bit analog to digital converter
● Varistor: ADC channel3 connected to an on board variable resistor. The variable resistor provides a voltage in the range of 0 to 3.3V.
1.8.2 Push-buttons
●
●
The following push-buttons are provided:
KEY: user push-button
Wakeup: push-button to wake-up the processor from low power modes
1.8.3 Audio
STR75x-EVAL evaluation board supports both audio (*.wav format) recording and playback.
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STR75x demonstration software Running the demonstrations
2.1 Menu
Figure 2.
Structure of the demonstration Menus
ST Logo + Promotion Speech wave
Help
Calendar
Main Menu
Low Power Mode
Voice recorder
Wave Player
Period Measure
USB Mouse Demo
Bord Self Test
About
Time
Date
Alarm
RUN
Time Adjust
Time Show
Date Adjust
Date Show
Alarm Adjust
Alarm Show
60 MHz
56 MHz
48 MHz
STOP
Standby
4 MHz
Exit: EXTIT/NCKD
Exit: Alarm/NCKD
Exit: RTC Alarm
Exit: WAKEUP Pin
Voice REC Start
Promotion Speech Play
Stop
Properties
OSIRIS
Recorded Wave
Play
Stop
Properties
Play
Stop
Start Acquire
Start
Start Test
Test Report
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Running the demonstrations STR75x demonstration software
The above figure shows the menu system of the STR75x demonstration. The column to the left displays the main menu. "RIGHT" and "LEFT" joystick direction allow you to navigate between the items in the menu or in the sub-menu. To enter a sub-menu, press the "SEL" push-button. To exit a sub-menu press the "UP/DOWN" joystick direction.
After a board RESET, the ST Logo appears on the LCD as shown in the figure below and the Promotion speech wave is played.
Note:
Then, after two seconds, the Welcome message is displayed on the LCD screen as follow:
Welcome to the
STR750 Demo
After two seconds, the following graphic is displayed on the LCD screen:
To Skip
Push SEL
Then press "SEL" to enter in the main menu and displays the first menu item " Help " .
If no SEL pressed the main menu is shown automatically after 100 seconds at the end of the promotion speech wave end.
When the board is powered up for the first time, you have to set the date and time in the
"Calendar" menu.
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STR75x demonstration software Running the demonstrations
2.1.2 Navigation
The demonstration menu is based on circular navigation, sub-menu, item selection and back capability as follows:
Figure 3.
Navigating in the demonstration menus
WELCOME SCREEN 1 st
LEVEL 2 nd
LEVEL
LEFT
RIGHT item 1
RIGHT LEFT item 2
RIGHT LEFT
...
item n
SEL
SE
L
LEFT
RIGHT item 1.1
RIGHT LEFT
SEL item 1.2
RIGHT LEFT
...
item 1.n
...
item 2.1
RIGHT LEFT
SEL item 2.2
RIGHT LEFT
...
item 2.n
...
●
●
The user navigates using the joystick push-buttons: “RIGHT”, “LEFT” ,“SEL”, “UP” and
“DOWN” located on the evaluation board.
● “RIGHT” and “LEFT” push-buttons perform circular navigation in the current menu items.
“SEL” push-button selects the current item.
“UP” and “DOWN” jumps to the higher level menu.
When the demonstration menu is activated, the following message is displayed on the LCD:
Main menu
Help
In this case, when "SEL" pressed the following graphics are shown on LCD screen continuously one by one each two seconds.
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Running the demonstrations STR75x demonstration software
Enter To
SEL
Sub-Menu
UP To Exit
SEL
LEFT Scroll
SEL
To exit from this help menu press any joystick buttons.
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STR75x demonstration software Running the demonstrations
The STR750 internal clocks are derived from one source mounted 4 MHz Crystal.
In this demo application, the system clock is configured as follow:
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●
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System clock is set to 60 MHz
HCLK frequency is set to 60 MHz
Timer clock (CK_TIM) is set to 60 MHz
PCLK is set to 30 MHz
USB clock (CK_USB) is set to 48 MHz (internal clock)
Only the RTC is clocked by a 32 kHz external oscillator.
The HCLK clock can be changed only in the "Run" sub-menu: it can be 60 MHz, 56 MHz,
48 MHz or 4 MHz.
Figure 4.
Clock Control
XT1
XT2
XRTC1
XRTC2
FREEOSC
OSC4M
OSC32K
4 MHz PLL
1-10 MHz
Up to
64 MHz
48 MHz
32 kHz
CLOCK
DETECTOR
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CK_SYS
AHB & APB
DIVIDERs
HCLK up to 60 MHz
PCLK up to 32MHz
CK_TIM up to 60 MHz
CK_USB 48 MHz
RTC
ALARM
WAKEUP
LPOSC
~245 kHz
USB_CK
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Running the demonstrations STR75x demonstration software
Note:
Note:
At any demo level, if no clock is present on OSC4M (broken or disconnected Crystal), the following message is displayed on the LCD screen:
No Clock Detected
STANDBY in 30s
If the 4 MHz Crystal is not reconnected in 30s, the MCU enters STANDBY mode and the demo will never restart as long as the clock is not present. If the 4 MHz Crystal is reconnected within thirty seconds the MCU continues execution.
Connecting the OSC4M after reset may not restart the demo correctly. So you must connect the crystal before starting the demo.
The Clock Detector (CKD) feeds the MCU with the FREEOSC used as emergency clock if no clock is detected.
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STR75x demonstration software Running the demonstrations
2.3.1 Peripherals
All used peripherals are described on the following table:
Table 1.
STR750 Demo Peripherals
Used Peripherals
ADC
EIC
EXTIT
GPIO
MRCC
RTC
SMI
TB
TIM
UART
USB
WDG
Application
Voice Recorder
Main
Main
All applications
All applications
Calendar
Wave player, voice recorder, alarm wave and board self test
System timer
Wave player and voice recorder
Board self test
USB mouse demo
Screen saver
2.3.2 Interrupts
The following table show all the enabled interrupts
Table 2.
STR750 Demo Interrupts
Interrupts Priority
Fast interrupt EXTIT Line0 FIQ channel
WATCHDOG
FIQ channel
RTC IRQ channel
Fast interrupt
15
MRCC IRQ channel
EXTIT IRQ channel
TIM0 IRQ channel
USB_LP IRQ channel
TB IRQ channel
14
4
3
2
1
Used for
JoyStick SEL push-button
Screen Saver
Calendar
Detect the clock failure
JoyStick and Key push-button
Voice recorder and wave player
USB synchro
System timer
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Running the demonstrations STR75x demonstration software
Table 3.
STR750 Demo External Interrupts
External Interrupts
EXTIT Line 0
Used for
JoyStick SEL push-button: menu navigation
EXTIT Line 3
EXTIT Line 8
EXTIT Line 12
EXTIT Line 13
EXTIT Line 7
EXTIT Line 15
JoyStick UP push-button: menu navigation
JoyStick DOWN push-button: menu navigation
JoyStick LEFT push-button: menu navigation
JoyStick RIGHT push-button: menu navigation
Key push-button:
Alarm stop and voice recorder application
RTC Alarm: Wake-up from low power modes
All External interrupts except the Key (EXTIT Line 7) are disabled in "SEL" function execution.
The Key push button (EXTIT Line 7) is only enabled in voice recorder (To start and to stop recording) application or if an alarm is occurred (To stop the alarm wave).
The SMI Flash is used to store the Promotion speech, the OSIRIS wave, the recorded wave, the wave test (in board self test) and the alarm wave. Below the SMI memory organization:
Figure 5.
SMI Flash memory organization
0x807FFFFF
0x80700000
RECORDED WAVE
0x80620000
0x80600000
TEST WAVE
ALARM WAVE
OSIRIS
0x80400000
PROMOTION SPEECH
0x80100000
0x80000000
FOR FUTURE USE
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STR75x demonstration software Running the demonstrations
The following section provides a detailed description of each part of the demonstration.
Notes:
●
●
In the demonstration, the core runs at HCLK = 60 MHz.
Red LEDs: LD2, LD3, LD4 and LD5 are always blinking with a frequency depending on the core clock (except in the board self test menu).
2.4.1 Calendar
The STR750 provides a Real Time Clock (RTC) which provide a set of continuously running counters that can be used, with suitable software, to implement a clock-calendar function.
The counters values can be written to set the current time of the system.
This sub-menu is used to configure some miscellaneous functions such as time, date and alarm.
Time
This sub-menu is divided in two items allowing the user to display or to adjust the current time .
● Time Adjust: After the evaluation board is powered up the user has to select this submenu to change the default time (00:00:00) to the current time. Once "Time Adjust" is selected, the first digit of the hour field is ready to be changed. Pressing the "UP" button will display the current value plus one. Pressing the "DOWN" button will display the previous digit value. After choosing the digit value press "SEL", the cursor jumps automatically to the next digit. When all the time digits are set, the "Calendar" menu is shown. Some digit values are limited to a range of values depending on the field (hour, minute or seconds). The following message (with the default time or the current time) is displayed on the LCD when this sub-menu is selected:
Time Adjust
HH:MM:SS
● Time Show: this item displays the current time or the default time. The following message is displayed on the LCD when this sub-menu is selected:
Time Show
HH:MM:SS
To exit from this sub menu press UP/DOWN push buttons.
Date
This sub-menu is divided in two items allowing the user to display or to adjust the current date .
● Date Adjust: This item has to be selected after each power-up in order to set the current date. The user is asked to fill the current date to be stored in the application memory. The date is displayed on 8 digits: MM/DD/YYYY. The default date value
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Running the demonstrations STR75x demonstration software
01/01/2006 is displayed when you enter this menu for the first time after power-up. The first digit of the month field is ready to be changed. To change the digit value it is needed to press "UP" or "DOWN". Pressing "UP" button will display the current value plus one, pressing "DOWN" button will display the previous value. After choosing the digit value press "SEL", the cursor jumps automatically to the next digit. When all the date digits are set, the "Calendar" menu is shown. Some digits values are limited depending on the field (month, day or year). In case of a re-adjust of the date, the current date value is shown. The following message is displayed on the LCD when this sub-menu is selected:
Date Adjust
01/01/2006
Note:
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● Date Show: this item displays the current date. The default date displayed after power up and before using the Adjust item application is 01/01/2006. The following message is displayed on the LCD when this sub-menu is selected:
Date Show
SUN JAN 01 2006
●
To exit from this sub menu press UP/DOWN push buttons.
Alarm
By means of this Sub-menu the user can configure the time when an alarm can be activated. When the alarm time value is reached the alarm wave is played. The Alarm wave is loaded in the SMI Flash. This sub-menu is divided in two items to display or to adjust the current Alarm .
● Alarm Adjust:
Submenu.
the alarm adjust is reached by the same procedure as the Time Adjust
Alarm Adjust
HH:MM:SS
Alarm Show: this item displays the current alarm time. The default Alarm displayed after power up and before using the Adjust item application is 00:00:00. The following message is displayed on the LCD when this sub-menu is selected:
Alarm Show
HH:MM:SS
To exit from this sub menu press UP/DOWN push buttons.
When an alarm occurrs the Alarm wave is played and can be stopped only by pushing the
Key button.
STR75x demonstration software
Note:
2.4.2
Running the demonstrations
The Alarm wave is played only if this wave is loaded in the SMI flash, otherwise the alarm event is used only to wake-up the system from low power modes.
Low power modes
The STR750 microcontroller provides different operating modes in which the power consumption is reduced. The purpose of this menu is to show the behavior of the microcontroller in different low-power modes. STOP and STANDBY mode are taken as examples.
RUN
STR750 provides a Power, Reset and Clock Configuration Unit (MRCC) which allows the user to configure the system clock.
Selecting this item shows how an application can be run at different clocking frequencies.
Blinking LEDs show the effect of changing the clock.
The following message is displayed on the LCD:
RUN Mode
60 MHz
The RUN menu contains five submenu items:
●
●
●
●
"
"
"
"
60 MHz
56 MHz
48 MHz
4 MHz
"
"
:
:
":
":
the application runs at 60 MHz.
the application runs at 56 MHz. the application runs at 48 MHz. the application runs at 4 MHz.
The user has to press the "SEL" push button to select one of the listed run modes.
"UP/DOWN" button have to be pushed to exit from any selected mode and return to 60 MHz as default clock value.
STOP
●
●
●
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●
This menu allows you to put the STR750 in STOP mode. The software performs the specific sequence of instructions needed to enter STOP mode.
STOP mode is characterized by:
Possibility to turn off the Main Oscillator and PLL
Possibility to turn off the Flash
Possibility to turn off the Main Voltage Regulator
Minimum power consumption
Automatic context saving
All Registers and SRAM contents are preserved
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Running the demonstrations STR75x demonstration software
In this application, there are two ways to make the STR750 exit from STOP mode:
● In the first one, the EXTIT (Key button) is used to exit the MCU from STOP mode. The following message is displayed on the LCD:
STOP Mode
Exit: EXTIT/NCKD
The red LEDs continue blinking until the "SEL" push button is pressed, then the system enters STOP mode and the following message is displayed on the LCD:
Note:
STOP Mode
Exit:Press Key
The MCU will remain in STOP mode unless the Key push button is pressed. Once this button is pressed, the MCU exits from STOP mode. Then the system clock is set to 60 MHz and the application resumes executing.
If an alarm occurs when the system is in STOP mode, the following message is displayed on the LCD screen when the MCU resumes from STOP mode:
One missed Alarm
Exit:Press SEL
Note:
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● In the second case, the RTC Alarm will wake-up the MCU from STOP mode after the programmed timing. The following message is displayed on the LCD:
STOP Mode
Exit: Alarm/NCKD
The red LEDs continue blinking until the "SEL" push button is pressed, then the system enters STOP mode and the following message is displayed on the LCD:
STOP Mode
Wait for Alarm
After the programmed timing has elapsed, the system exits from STOP mode. Then the system clock is set to 60 MHz and the application resumes executing.
In both cases, the NCKD flag will wake-up the MCU from STOP mode.
STR75x demonstration software Running the demonstrations
STANDBY
●
●
●
●
This menu allows you to put the STR750 in STANDBY mode. The software performs the specific sequence of instructions needed to enter STANDBY mode.
STANDBY mode is characterized by:
The main voltage regulator is disabled
Only the backup circuitry remains powered by the low power voltage regulator
Minimum power consumption
All registers and SRAM contents are lost
In this application, there are two ways to make the STR750 exit from STANDBY mode:
● In the first one, the Wake-up push button is used to wake-up the MCU from STANDBY mode. The following message is displayed on the LCD:
STANDBY Mode
Exit: WAKEUP Pin
The red LEDs continue blinking until the "SEL" push button is pressed, then the system enters STANDBY mode and the following message is displayed on the LCD:
STANDBY Mode
Press WAKEUP Key
The MCU will remain in STANDBY mode unless the Wakeup push button is pressed. Once this button is pressed, the MCU exits from STANDBY mode and system reset signal is generated.
● In the second case, the RTC Alarm will wake-up the MCU from STANDBY mode after the programmed timing. The following message is displayed on the LCD:
STANDBY Mode
Exit: RTC Alarm
The red LEDs continue blinking until the "SEL" push button is pressed, then the system enters STANDBY mode and the following message is displayed on the LCD:
STANDBY Mode
Wait for Alarm
After the programmed timing have elapsed, the system exits from the STANDBY mode and system reset signal is generated.
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Note:
The STR750 microcontroller provides timers and an ADC module which can be used for timing and signal acquisition respectively. In this case, we use one Timer (TIM0) to generate an Update interrupt every 45.35 µs (22.05 KHz) which corresponds to the sampling frequency of the ADC.
To fine tune the voice recording quality you can use the on board potentiometer RV3 to control the micro preamplifier gain.
The following message is displayed on the LCD:
Voice Recorder
Start REC Voice
This LCD message remains until the "SEL" push button is pressed, then the MCU will erase the SMI memory area that is used to store the voice data and the following message is displayed on the LCD:
Voice Recorder
Record:Press KEY
When KEY is pressed, the MCU starts recording voice and the following message is displayed on the LCD:
Voice Recorder
Stop:in 30s/KEY
To stop recording you may press the KEY button. Otherwise the MCU will stop it automatically afer 30s.
The STR750 microcontroller has several embedded Timers which can be used for timing purposes and generating the output signals. In this case, we use 2 Timers (TIM) the first
Timer (TIM2) is configured to generate a PWM signal with a tunable duty cycle. The second
Timer (TIM0) is used to generate an Update interrupt each time the wave file is sampled which corresponds to the TIM2 Duty cycle update.
The wave file has the following characteristics:
●
●
●
●
●
*.wav file
Audio Format: PCM
Sample rate: 8000 Hz/ 11025 Hz/ 22050 Hz/ 44100 Hz
Bits Per Sample: 8 bits
Number Of Channels: Mono
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STR75x demonstration software Running the demonstrations
●
●
●
There are three waves to play:
Promotion speech
OSIRIS
Recorded wave
Promotion Speech
The following message is displayed on the LCD:
Wave Player
Promotion Speech
You can re-play a wave only by returning to the precedent sub-menu (Wave Player). The following message is displayed on the LCD:
Promotion Speech
Play
If "SEL" pressed, The following message is displayed on the LCD:
Promotion Speech
Stop
To stop playing press "SEL" or wait until the end of the wave and the MCU will stop it automatically.
In this sub-menu, we can view the wave properties. The following message is displayed on the LCD:
Promotion Speech
Properties
The Promotion Speech wave file properties are:
●
●
●
●
●
●
Playing time: 1min 40 sec
File size: 2210758 Bytes
Format Tag: PCM
Channels: MONO
Sample Rate: 22050 Hz
Bits per sample: 8 Bits
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Running the demonstrations
Note:
STR75x demonstration software
If the Promotion speech wave is not loaded in the reserved SMI memory, the following message is displayed on the LCD screen:
No Loaded Wave
Press UP/DOWN
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OSIRIS
The following message is displayed on the LCD:
Wave Player
OSIRIS
You can re-play a wave only by returning to the precedent sub-menu (Wave Player). The following message is displayed on the LCD:
OSIRIS
Play
If "SEL" pressed, The following message is displayed on the LCD:
OSIRIS
Stop
To stop playing press "SEL" or wait until the end of the wave and the MCU will stop it automatically.
In this sub-menu, we can view the wave properties. The following message is displayed on the LCD:
OSIRIS
Properties
The OSIRIS wave file properties are:
●
●
●
●
●
●
Playing time: 1min 04 sec
File size: 1426686 Bytes
Format Tag: PCM
Channels: MONO
Sample Rate: 22050 Hz
Bits per sample: 8 Bits
STR75x demonstration software
Note:
Running the demonstrations
If the OSIRIS wave is not loaded in the reserved SMI memory, the following message is displayed on the LCD screen:
No Loaded Wave
Press UP/DOWN
Note:
Recorded Wave
The following message is displayed on the LCD:
Wave Player
Recorded Wave
You can re-play a wave only by returning to the precedent sub-menu (Wave Player). The following message is displayed on the LCD:
Recorded Wave
Play
If "SEL" pressed, The following message is displayed on the LCD:
Recorded Wave
STOP
To stop playing press "SEL" or wait until the end of the wave and the MCU will stop it automatically.
If there is no recorded wave or if the SMI memory reserved for recorded wave is erased, the following message is displayed on the LCD screen:
No Recorded Wave
Press UP/DOWN
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This menu allows you to measure the period of an external input signal. The STR750 timers can be used in PWMI (PWM input) mode to measure the frequency and the duty cycle of an input signal in a range which depends on the TIM1 clock: in our case the range is from 458
Hz to 10 kHz. You have to connect the signal to be measured to the TIM1_TI2/P0.31 pin.
If the input signal is in the specified range, the following message is displayed on the LCD:
Duty Cycle: xx%
Freq: xxxxx Hz
If the signal is under the low limit of the range, the following message is displayed on the
LCD:
Out of range!!
Freq < 458 Hz
If the signal is over the high limit of the range, the following message is displayed on the
LCD:
Out of range!!
Freq > 10 kHz
If there is no signal connected to the TIM1_TI2/P0.31 pin, the following message is displayed on the LCD:
!!no signal!!
Press UP/DOWN
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STR75x demonstration software
2.4.6
Running the demonstrations
USB mouse demo
The STR750 microcontroller provides an USB (Universal Serial Bus) which provide an interface between a full-speed USB bus and the APB bus.
This sub-menu is used to configure the USB cell to communicate with the PC and run the mouse demo using the joystick push-buttons.
USB Mouse Demo
Start
If "SEL" pressed the following message is displayed on the LCD screen:
Plug the USB
Cable
For this sub-menu you have to connect an USB cable between the USB connector type B
(CN2) and the PC. The previous message will remain displayed on the LCD screen until the cable plugin.
Once the cable is connected, the following message is displayed on the LCD screen:
Move the JoyStick
To Stop Press SEL
Move the joystick and the PC cursor will move corresponding to the joystick push-button.
To exit from this sub-menu press "SEL".
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Running the demonstrations
2.4.7
STR75x demonstration software
●
Board self test
This test consists of checking the different components of the board and the STR750 peripherals.
The board test is made of the following sub-menus:
Start test
You select this sub-menu to start the various board tests.
After some tests the user is asked to store the test result. Press the "SEL" push button if the test is passed, else press the "LEFT" push button if test is failed.
The board self tests are:
● PushButtons Test: tests all the connected push buttons which are "Wakeup" and "Key".
The following message is displayed on the LCD:
PushButtons Test
Press ^xxxx^
JoyStick Test: tests all the connected joystick pins which are: "SEL", "RIGHT", "LEFT",
"UP" and "DOWN".
JoyStick Test
Press ^xxxx^
● LEDs Test: Successively lights up the four red LEDs connected to P0.16, P1.01, P2.18 and P2.19. The following message is displayed on the LCD:
Leds Test
Press ^SEL^
Press "SEL" to select whether the current test is passed or failed.
Press "SEL" when the test is passed else press "LEFT".
● MIC Speaker Test: tests whether the microphone and the speaker work correctly.The following message is displayed on the LCD:
MIC Speaker Test
Press ^SEL^
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STR75x demonstration software Running the demonstrations
First, the MCU will record data using a microphone. It will store it in the SMI after erasing the corresponding region and displaying the following message on the LCD:
MIC Speaker Test
Record:Press KEY
If a key is pressed, the MCU records a short data wave (3s).The following message is displayed on the LCD:
MIC Speaker Test
Stop:in 3s/KEY
Once recording is finished, the MCU will play the recorded wave and the following message is displayed on the LCD:
MIC Speaker Test
Play test:UP/DOWN
If the "UP" or "DOWN" push-button is pressed, the following message is displayed on the
LCD:
MIC Speaker Test
Skip test:UP/DOWN
To stop the test wave press "UP" or "DOWN" or it will be stopped automatically at the end, and you must enter the result of the test:
Press "SEL" when the test is passed else press "LEFT".
● VaResistor Test: tests whether the potentiometer connected to Channel3 of the ADC works correctly. The number of the red LEDs turned on corresponds to the potentiometer output voltage. The following message is displayed on the LCD:
VarResistor Test
Press ^SEL^
If "SEL" pressed the following message is displayed on the LCD:
Turn the potentio meter & Press SEL
Press "SEL" to select whether the current test is passed or failed.
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Running the demonstrations
Press "SEL" when the test is passed else press "LEFT".
STR75x demonstration software
● OSC32K Test: Test if Oscillator 32K is ready or not.
OSC32K Test
Press ^SEL^
Press "SEL" to display whether the current test is passed or failed.
● OSC4M Test: Test if Oscillator 4M is ready or not.
OSC4M Test
Press ^SEL^
Press "SEL" to display whether the current test is passed or failed.
● SMI Flash Test: Test Access to SMI flash.
SMI Flash Test
Press ^SEL^
Press "SEL" to display whether the current test is passed or failed.
● UART0 UART1 Test: Testing a transmission and reception between UART0 and
UART1. For this test you have to connect a null-modem female/female RS232 cable between the two DB9 connectors on the evaluation board (CN4-CN8).
Once the test is finished, a message is displayed indicating whether the UART test is passed or failed.
The following message is displayed on the LCD:
UART0 UART1 Test
Press ^SEL^
● UART1 UART2 Test: Testing a transmission and reception between UART1 and
UART2. For this test you have to connect a null-modem female/female RS232 cable between the two DB9 connectors on the evaluation board (CN8-CN10).
Once the test is finished, a message is displayed indicating whether the UART test is passed or failed.
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STR75x demonstration software Running the demonstrations
The following message is displayed on the LCD:
UART1 UART2 Test
Press ^SEL^
Press "SEL" to exit from board self test.
Test report
This sub-menu offers the possibility of showing the result of all tests done in the "Start Test" sub-menu.
If you select this sub-menu before starting the test, the following message is displayed on the LCD:
Board test not done yet!!!!
After selecting this sub-menu, the result of all the board tests is displayed, it is failed if at least one test was not correct, else passed if all tests are done successfully. The following message is displayed on the LCD:
Failed
Overall test
!!!xxxxxx!!!
Passed
If some tests were failed, a second message is displayed which contains in the first line the number of the failed test, and in the second line the name of those tests which you can display one-by-one using the "RIGHT" and "LEFT" push buttons. The following message is displayed on the LCD:
Number of
failed Test
!!!Failed!!! xx Test
To exit from the "Test Report" sub-menu, press the "UP/DOWN" push button.
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Running the demonstrations STR75x demonstration software
The STR750 Watchdog Timer module (WDG) can be used to reset the system or used as a timer base to generate an interrupt after a selected time delay depending on the system clock. In this demonstration software the WDG is used as timer with its End of Count interrupt, that sets a screen saver display when the WDG timer reaches a specified time delay without resetting the system. If any of the push-buttons are pressed during this delay which is 30 seconds, the screen saver is displayed on LCD. Since one push-button is pressed, the last sub-menu is re-displayed on LCD.
When the demonstrations enter in screen save mode, the date and time are displayed on the LCD as shown in the figure below. The time and date are continuously updated:
MM/DD/YY
HH
:
MM:SS
Using the WDG functions, we can enable or disable the screen saver for each demonstration sub-menu.
This menu shows the version of the STR75x Demo software. When this sub-menu is selected the following message is displayed on the LCD screen:
STR75x Demo
Version 1.0
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STR75x demonstration software Running the demonstrations
This section describes the software architecture. It is divided into two layers:
● Hardware library layer : contains the software library source files. These do not need to be modified by the user:
– 75x_conf.h: is the header file for configuring which peripherals are used, and miscellaneous defines
– 75x_type.h: contains the common data types and enumerations used in the other files
– 75x_map.h: contains the peripheral memory mapping and register data structures
– 75x_lib.h: is the main header file including all the others
– 75x_it.c: is the source file containing the interrupt handlers
●
– USB_lib.h: is the USB library include file
Demonstration architecture : contains the architecture of the demonstration software that may be modified by the user:
– menu.h: Header for the menu.c file.
– menu.c: This file provides a set of functions needed to manage the demonstration menu
– calendar.h: Header for the calendar.c file
– calendar.c: This file provides functions for managing time, date and alarm events
– lowpower.h: Header for the lowpower.c file
– lowpower.c: This file provides low power modes functions
– periodmeasure.h: Header for the periodmeasure.c file
– periodmeasure.c: This file provides functions for measuring the period and the duty cycle of an external signal
– lcd.h: Header for the lcd.c file
– lcd.c: This file provides a set of functions needed to manage the LCD screen.
– voicerecorder.h: Header for the voicerecorder.c file
– voicerecorder.c: This file provides a set of functions needed to record voice.
– waveplayer.h: Header for the waveplayer.c file
– waveplayer.c: This file provides a set of functions needed to play waves.
– smiflash.h: Header for the smiflash.c file
– smiflash.c: This file provides a set of functions needed to manage SMI Flash.
– joystickHID.h: Header for the joystickHID.c file
– joystickHID.c: This file provides a set of functions needed to manage the USB
Mouse Demo.
– usb_conf.h: USB device configuration file
– usb_desc.h: Header for the usb_desc.c file
– usb_desc.c: Descriptor for USB Joystick Mouse
– usb_prop.h: Header for the usb_prop.c file
– usb_prop.c: All processing related to the Joystick Mouse device
– usb_pwr.h: Header for the usb_pwr.c file
– usb_pwr.c: Connection/disconnection & power management
– usb_endp.c: Non control endpoints interrupt service routine
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Running the demonstrations STR75x demonstration software
– usb_istr.c: ISTR events interrupt service routines
– boardselftest.h: Header for the boardselftest.c file
– boardselftest.c: This file provides functions for testing the STR75x-EVAL board.
– main.h: Header for the main.c file
– main.c: This file provides a set of functions needed to manage the demonstration menu
Figure 6.
Software architecture usb_prop.c
periodmeasure.c
periodmeasure.h
usb_prop.h
usb_pwr.c
usb_pwr.h
boardselftest.c
boardselftest.h
calendar.c
calendar.h
smiflash.c
smiflash.h
lowpower.c
lowpower.h
voicerecorder.c
voicerecorder.h
joystickHID.c
joystickHID.h
main.c
main.h
USB_lib.h
usb_conf.h
waveplayer.c
waveplayer.h
Menu.c
Menu.h
lcd.c
lcd.h
75x_it.c
User Application
Hardware Library
75x_conf.h
ppp.h
ppp.c
75x_map.h
xxx.h
xxx.c
ppp.h
ppp.c
75x_lib.h
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STR75x demonstration software
Table 4.
Date
Document revision history
Revision
20-Sep-2006 1 Initial release
Changes
Revision history
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STR75x demonstration software
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