Felipe Neves / Mbed OS lpc4337_mbed_os_thread_demo

Threading of mbed os running in LPC4337 xplorer kit

Dependencies:   ST7567

Files at this revision

API Documentation at this revision

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

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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.gitignore	Mon Sep 26 21:14:47 2016 +0000
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+.build
+.mbed
+projectfiles
+*.py*

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/README.md	Mon Sep 26 21:14:47 2016 +0000
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+# 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.

--- /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

Binary file img/uvision.png has changed

--- /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;
+}
+

--- /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