Honza T. / Mbed 2 deprecated EXAMPLE_Nucleo_mbed_RTOS_test_code

Simple test program to get familiar with functionality of MBED RTOS on ST Nucleo-F411RE. Tasks for LED blinking, user button, temperature measurement with DS1620, temperature measurement with internal temperature sensor of ST32F411RE, ultrasonic distance measurement and displaying result on 16x2 TextLCD.

Dependencies:   DS1620_improved TextLCD_improved mbed-rtos mbed

Files at this revision

API Documentation at this revision

Revision 15:a627638edd9c, committed 2015-12-14

Comitter:
dzoni
Date:
Mon Dec 14 21:46:45 2015 +0000
Parent:
14:bd01b5240dee
Child:
16:cfb774e3e7fc
Commit message:
Hangs out in display ("Raw: 20" and that's all)

Changed in this revision

todo.txt Show annotated file Show diff for this revision Revisions of this file
tsk_display.cpp Show annotated file Show diff for this revision Revisions of this file
tsk_dist.cpp Show annotated file Show diff for this revision Revisions of this file
tsk_main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/todo.txt	Mon Dec 14 19:48:36 2015 +0000
+++ b/todo.txt	Mon Dec 14 21:46:45 2015 +0000
@@ -1,2 +1,1 @@
-1. Change distance measurement principle. Result fluctuations too big.
-2. Change thread principle from Thread::wait() to FSM and its evaluation in given times and signals to particular threads.
+1. Change thread principle from Thread::wait() to FSM and its evaluation in given times and signals to particular threads.

--- a/tsk_display.cpp	Mon Dec 14 19:48:36 2015 +0000
+++ b/tsk_display.cpp	Mon Dec 14 21:46:45 2015 +0000
@@ -8,7 +8,7 @@
 #include "tsk_dist.h"
 #include "tsk_main.h"
 
-static TextLCD *lcd = NULL;
+static TextLCD *lcd;
 
 uint32_t initDisplay(void const *args) {
 
@@ -36,10 +36,10 @@
     while (true) {
         lcd->cls();
         lcd->printf("Raw:%3u % 5.0f mm", temp_data.temp_raw, dist_data.distance);
-        uiCnt += 2;
+//        uiCnt += 2;
         lcd->locate(0, 1);    
         lcd->printf("Float: %3.2f%cC", temp_data.temperature, 0xdf);
 
-        Thread::wait(2000);
+        Thread::wait(1896);
     }
 }
\ No newline at end of file

--- a/tsk_dist.cpp	Mon Dec 14 19:48:36 2015 +0000
+++ b/tsk_dist.cpp	Mon Dec 14 21:46:45 2015 +0000
@@ -8,10 +8,27 @@
 
 
 static DigitalOut  trigDist(PB_9);
-static DigitalIn   echoDist(PA_6);
+static InterruptIn echoDist(PA_6);
 
 static Timer   timer;
 
+static void rising(void) {
+    timer.start();
+}
+
+static void falling(void) {
+    timer.stop();
+    echoDist.rise(0);
+    echoDist.fall(0);
+
+    dist_data.timerTicks = timer.read_us();
+        
+    // 340 ms-1
+    dist_data.distance = (timer.read()/2.0f - 0.0f)*340.0f*1000.0f;
+
+    // Vynuluj timer
+    timer.reset();
+}
 
 void dist_thread(void const *args) {
     
@@ -25,29 +42,15 @@
             dist_data.timerTicks = 0;
             dist_data.distance = 0.0f;
         } else {
+            // Vynuluj timer
             timer.stop();
             timer.reset();
                 
-            // Cekej na hranu na Echo
-            while (echoDist != 1)
-                ;
-        
-            // Zacni merit cas
-            timer.start();
-        
-            // Cekej na hranu na Echo
-            while (echoDist != 0)
-                ;
-        
-            // Zastav mereni    
-            timer.stop();
-                   
-            dist_data.timerTicks = timer.read_us();
-        
-            // 340 ms-1
-            dist_data.distance = (timer.read()/2.0f - 0.0f)*340.0f*1000.0f;
+            // Cekej na hrany na Echo
+            echoDist.rise(&rising);
+            echoDist.fall(&falling);
         }
         
-        Thread::wait(1000);
+        Thread::wait(500);
     }
 }

--- a/tsk_main.cpp	Mon Dec 14 19:48:36 2015 +0000
+++ b/tsk_main.cpp	Mon Dec 14 21:46:45 2015 +0000
@@ -1,6 +1,5 @@
 #include "mbed.h"
 #include "rtos.h"
-#include "TextLCD.h"
 
 #include "tsk_button.h"
 #include "tsk_display.h"
@@ -15,7 +14,7 @@
 
 struct task_definition_struct {
     void(*task)(void const *args);
-    uint32_t(*init)(void const *args); // 1 = OK, 0 = FAIL
+    uint32_t(*init)(void const *args); // Result: 1 = OK, 0 = FAIL
     void *task_args;                   // NULL For DEFAULT (NULL)
     void *init_args;                   // NULL For DEFAULT (NULL)
     osPriority priority;
@@ -27,11 +26,11 @@
 };
 
 static struct task_definition_struct taskList[] = {
-    { dist_thread,   NULL,            NULL, NULL, osPriorityRealtime,    0, NULL, 0 },
-    { temp_thread,   &initDS1620Temp, NULL, NULL, osPriorityLow,         0, NULL, 0 },
-    { button_thread, NULL,            NULL, NULL, osPriorityAboveNormal, 0, NULL, 0 },
-    { led_thread,    NULL,            NULL, NULL, osPriorityNormal,      0, NULL, 0 },
-    { disp_thread,   &initDisplay,    NULL, NULL, osPriorityLow,         0, NULL, 0 },
+    { dist_thread,   NULL,            NULL, NULL, osPriorityNormal, 0, NULL, 0 },
+    { temp_thread,   &initDS1620Temp, NULL, NULL, osPriorityLow,    0, NULL, 0 },
+    { button_thread, NULL,            NULL, NULL, osPriorityNormal, 0, NULL, 0 },
+    { led_thread,    NULL,            NULL, NULL, osPriorityNormal, 0, NULL, 0 },
+    { disp_thread,   &initDisplay,    NULL, NULL, osPriorityNormal, 0, NULL, 0 },
 };
 
 static uint32_t initTasks(void) {
@@ -60,21 +59,9 @@
 
 
 int main() {
-
     
     Thread::wait(1000);
 
-    initDS1620Temp(NULL);
-    initDisplay(NULL);
-
-/*      
-    Thread tempThread(temp_thread, NULL, osPriorityLow);
-    Thread distThread(dist_thread, NULL, osPriorityRealtime);
-    Thread ledThread(led_thread, NULL, osPriorityNormal);
-    Thread buttonThread(button_thread, NULL, osPriorityAboveNormal);
-    Thread dispThread(disp_thread, NULL, osPriorityNormal);
-*/
-
     initTasks();
 
     Thread::wait(osWaitForever);