Felipe Neves
/
lpc4337_mbed_os_thread_demo
Threading of mbed os running in LPC4337 xplorer kit
Revision 0:da8a31f3e0f7, committed 2016-09-26
- Comitter:
- uLipe
- Date:
- Mon Sep 26 21:14:47 2016 +0000
- Commit message:
- First commit: initial implementation
Changed in this revision
diff -r 000000000000 -r da8a31f3e0f7 .gitignore --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Mon Sep 26 21:14:47 2016 +0000 @@ -0,0 +1,4 @@ +.build +.mbed +projectfiles +*.py*
diff -r 000000000000 -r da8a31f3e0f7 README.md --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Mon Sep 26 21:14:47 2016 +0000 @@ -0,0 +1,96 @@ +# Getting started with Blinky on mbed OS + +This is a very simple guide, reviewing the steps required to get Blinky working on an mbed OS platform. + +Please install [mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli). + +## Get the example application! + +From the command line, import the example: + +``` +mbed import mbed-os-example-blinky +cd mbed-os-example-blinky +``` + +### Now compile + +Invoke `mbed compile` specifying the name of your platform and your favorite toolchain (`GCC_ARM`, `ARM`, `IAR`). For example, for the ARM Compiler 5: + +``` +mbed compile -m K64F -t ARM +``` + +Your PC may take a few minutes to compile your code. At the end you should get the following result: + +``` +[snip] ++----------------------------+-------+-------+------+ +| Module | .text | .data | .bss | ++----------------------------+-------+-------+------+ +| Misc | 13939 | 24 | 1372 | +| core/hal | 16993 | 96 | 296 | +| core/rtos | 7384 | 92 | 4204 | +| features/FEATURE_IPV4 | 80 | 0 | 176 | +| frameworks/greentea-client | 1830 | 60 | 44 | +| frameworks/utest | 2392 | 512 | 292 | +| Subtotals | 42618 | 784 | 6384 | ++----------------------------+-------+-------+------+ +Allocated Heap: unknown +Allocated Stack: unknown +Total Static RAM memory (data + bss): 7168 bytes +Total RAM memory (data + bss + heap + stack): 7168 bytes +Total Flash memory (text + data + misc): 43402 bytes +Image: .\.build\K64F\ARM\mbed-os-example-blinky.bin +``` + +### Program your board + +1. Connect your mbed device to the computer over USB. +1. Copy the binary file to the mbed device . +1. Press the reset button to start the program. + +You should see the LED of your platform turning on and off. + +Congratulations if you managed to complete this test! + +## Export the project to Keil MDK and debug your application + +From the command line, run the following command: + +``` +mbed export -m K64F -i uvision +``` + +You should see the following output: + +``` +Successful exports: + * K64F::uvision .\projectfiles\uvision_K64F\Unnamed_Project +``` + +To debug the application: + +1. Start uVision. +1. Import the uVision project generated earlier. +1. Compile your application and generate an `.axf` file. +1. Make sure uVision is configured to debug over CMSIS-DAP (From the Project menu > Options for Target '...' > Debug tab > Use CMSIS-DAP Debugger). +1. Set breakpoints and start a debug session. + +![Image of uVision](img/uvision.png) + +## Troubleshooting + +1. Make sure `mbed-cli` is working correctly and its version is greater than `0.8.9` + + ``` + mbed --version + ``` + + If not, you can update it easily: + + ``` + pip install mbed-cli --upgrade + ``` + +2. If using Keil MDK, make sure you have a license installed. [MDK-Lite](http://www.keil.com/arm/mdk.asp) has a 32KB restriction on code size.
diff -r 000000000000 -r da8a31f3e0f7 ST7567.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ST7567.lib Mon Sep 26 21:14:47 2016 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/MACRUM/code/ST7567/#743aff4786ba
diff -r 000000000000 -r da8a31f3e0f7 img/uvision.png Binary file img/uvision.png has changed
diff -r 000000000000 -r da8a31f3e0f7 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Mon Sep 26 21:14:47 2016 +0000 @@ -0,0 +1,143 @@ +/** + * @brief Simple threading using the mbed os demo + */ +#include "mbed.h" +#include "rtos.h" +#include "ST7567.h" + +/* LCD and font parameters */ +#define LCD_HEIGHT 64 +#define LCD_WIDTH 128 +#define FONT_HEIGHT 10 +#define FONT_WIDTH 5 + + +/* allocate statically stacks for the three threads */ +unsigned char rt_stk[1024]; +unsigned char hp_stk[1024]; +unsigned char lp_stk[1024]; + +/* creates three tread objects with different priorities */ +Thread real_time_thread(osPriorityRealtime, 1024, &rt_stk[0]); +Thread high_prio_thread(osPriorityHigh, 1024, &hp_stk[0]); +Thread low_prio_thread(osPriorityNormal, 1024, &lp_stk[0]); + + +/* create a semaphore to synchronize the threads */ +Semaphore sync_sema; + +/* creates a instance of display */ +ST7567 disp(D11, D13, D12, D9, D10); + + + + +/** + * @brief real time prio task function + */ +static void rt_task(void) { + const char rt_message[] = {"Real time prio Task: \0"}; + + disp.locate(0, FONT_HEIGHT * 2); + + disp.printf(rt_message); + + for(;;) { + + /* take the semaphore allowing less priority + * tasks to run + */ + disp.locate(LCD_WIDTH - (sizeof(rt_message) * FONT_WIDTH), FONT_HEIGHT * 2); + disp.printf("WAIT!"); + sync_sema.wait(0); + + /* show the message by 1 second */ + disp.locate(LCD_WIDTH - (sizeof(rt_message) * FONT_WIDTH), FONT_HEIGHT * 2); + disp.printf("EXEC!"); + + disp.locate(LCD_WIDTH - (sizeof(rt_message) * FONT_WIDTH), FONT_HEIGHT * 2); + disp.printf("DELAY"); + Thread::wait(50); + + } + +} + +/** + * @brief high prio task function + */ +static void hp_task(void){ + const char hp_message[] = {"High priority Task: \0"}; + + disp.locate(0, FONT_HEIGHT * 3); + disp.printf(hp_message); + + for(;;) { + /* take the semaphore allowing less priority + * tasks to run + */ + disp.locate(LCD_WIDTH - (sizeof(hp_message) * FONT_WIDTH), FONT_HEIGHT * 3); + disp.printf("WAIT!"); + sync_sema.wait(0); + + /* show the message by 1 second */ + disp.locate(LCD_WIDTH - (sizeof(hp_message) * FONT_WIDTH), FONT_HEIGHT * 3); + disp.printf("EXEC!"); + + disp.locate(LCD_WIDTH - (sizeof(hp_message) * FONT_WIDTH), FONT_HEIGHT * 3); + disp.printf("DELAY"); + Thread::wait(50); + + } +} + +/** + * @brief normal prio task function + */ +static void np_task(void) { + + const char lp_message[] = {"Low priority Task: \0"}; + + disp.locate(0, FONT_HEIGHT * 4); + disp.printf(lp_message); + + + for(;;) { + /* show the message by 1 second */ + disp.locate(LCD_WIDTH - (sizeof(lp_message) * FONT_WIDTH), FONT_HEIGHT * 4); + disp.printf("EXEC!"); + + disp.locate(LCD_WIDTH - (sizeof(lp_message) * FONT_WIDTH), FONT_HEIGHT * 4); + disp.printf("DELAY"); + Thread::wait(50); + + /* release the semaphore and syncrhonize the tasks */ + disp.locate(LCD_WIDTH - (sizeof(lp_message) * FONT_WIDTH), FONT_HEIGHT * 4); + disp.printf("WAIT!"); + sync_sema.release(); + + } +} + +/** + * @brief main loop + */ +int main(void) { + const char banner[] = {"Embarcados MBED-OS Thread demo\0"}; + + /* configures the display */ + disp.cls(); + disp.set_contrast(0x35); + disp.locate((LCD_WIDTH - (sizeof(banner) * FONT_WIDTH)) / 2, 0); + disp.printf(banner); + + + /* starts the three tasks */ + real_time_thread.start(rt_task); + high_prio_thread.start(hp_task); + low_prio_thread.start(np_task); + + + return 0; +} +
diff -r 000000000000 -r da8a31f3e0f7 mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Mon Sep 26 21:14:47 2016 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#21dd7008a1540c02150f1b87c12294301db979bb