cathal deehy-power
/
Case_Study_rtos_basic
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Dependencies: C12832 LM75B mbed-rtos mbed
Fork of
rtos_basic
by 
mbed official
Revision 12:2b54f52b1034, committed 2015-02-13
- Comitter:
- cathal66
- Date:
- Fri Feb 13 14:06:33 2015 +0000
- Parent:
- 8:0f773a5937f0
- Commit message:
- Four thread running with commits
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Thu Feb 12 23:37:25 2015 +0000
+++ b/main.cpp Fri Feb 13 14:06:33 2015 +0000
@@ -1,81 +1,81 @@
-#include "mbed.h" //Include the mbed.h file
-#include "rtos.h" //include the RTOS.h file
-#include "LM75B.h"
-#include "C12832.h"
+#include "mbed.h" //Include the mbed.h file
+#include "rtos.h" //include the RTOS.h file
+#include "LM75B.h" //include the LM75B.h file
+#include "C12832.h" //include the C12832.h file
-C12832 lcd(p5, p7, p6, p8, p11);
+C12832 lcd(p5, p7, p6, p8, p11); //Setup the LCD
-LM75B sensor(p28,p27);
-Serial pc(USBTX,USBRX);
+LM75B sensor(p28,p27); //Setup the Temp Sensor I2C
+Serial pc(USBTX,USBRX); //Setup the serial comm
-float Temp_Value;
+float Temp_Value; //global var for temp
-PwmOut spkr(p26);
-PwmOut LED_red(p23);
-PwmOut LED_blue(p25);
+PwmOut spkr(p26); //PWM speaker
+PwmOut LED_red(p23); //PWM LED red
+PwmOut LED_blue(p25); //PWM LED blue
+
+DigitalOut led1(LED1); //Setup LED1 to the varible name led1
+DigitalOut led2(LED2); //Setup LED2 to the varible name led2
-DigitalOut led1(LED1); //Setup LED1 to the varible name led1
-DigitalOut led2(LED2); //Setup LED2 to the varible name led2
-
-Mutex Temp_Mutex;
+Mutex Temp_Mutex; //Setup Mutex
-void Tempature_Senor(void const *args) { //Function or the thread to be called
+void Tempature_Senor(void const *args) { //Function or the thread to be called
- //Try to open the LM75B
- if (sensor.open()) {
- printf("Device detected!\n");
+
+ if (sensor.open()) { //Try to open the LM75B
+ printf("Device detected!\n"); //printf if device connects
while (1) {
- lcd.cls();
- lcd.locate(0,3);
- lcd.printf("Temp = %.3f\n", (float)sensor);
- Temp_Mutex.lock();
- Temp_Value = (float)sensor;
- Temp_Mutex.unlock();
- wait(1.0);
+ lcd.cls(); //Clears LCD
+ lcd.locate(0,3); //Locartion on LCD display
+ Temp_Mutex.lock(); //Mutex Lock sensor
+ lcd.printf("Temp = %.3f\n", (float)sensor); //Print Temp value on LCD
+ Temp_Value = (float)sensor; //read sonsor and store in Temp_value
+ Temp_Mutex.unlock(); //Mutex unlock sensor
+ Thread::wait(1.0); //Thread wait
}
} else {
- error("Device not detected!\n");
- } //End Super loop
+ error("Device not detected!\n"); //Printf on serial if error
+ } //End Super loop
}
-void Speaker(void const *args) { //Function or the thread to be called
- while (true) { //Super loop
- spkr.period(1.0/5000);
- spkr = 0.25;
- Thread::wait(800);
- spkr.period(1.0/3000);
- spkr = 0.25;
- Thread::wait(800);
- } //End Super loop
+void Speaker(void const *args) { //Function or the thread to be called
+ while (true) { //Super loop
+ spkr.period(1.0/5000); //set period
+ spkr = 0.25; //set PWM
+ Thread::wait(800); //Thread wait
+ spkr.period(1.0/3000); //set period
+ spkr = 0.25; //set PWM
+ Thread::wait(800); //Thread wait
+ } //End Super loop
}
-void led_R_B_flash(void const *args) { //Function or the thread to be called
- while (true) { //Super loop
+void led_R_B_flash(void const *args) { //Function or the thread to be called
+ while (true) { //Super loop
- LED_red = 0.5;
- LED_blue = 1;
+ LED_red = 0.5; //PWM LED to half brightness
+ LED_blue = 1; //Turn blue LED off
Thread::wait(800);
- LED_red = 1;
- LED_blue = 0.5;
- Thread::wait(800);
- } //End Super loop
-} //End Function / thread
+ LED_red = 1; //Turn red LED off
+ LED_blue = 0.5; //PWM LED to half brightness
+ Thread::wait(800); //Thread wait
+ } //End Super loop
+} //End Function / thread
-int main() { //Main
- float local_Temp_V=0;
- Thread thread_Temp(Tempature_Senor);
- Thread thread_LED_Flash(led_R_B_flash);
- Thread thread_Speaker_Sound(Speaker);
+int main() { //Main
+ float local_Temp_V=0; //SETup local var
+ Thread thread_Temp(Tempature_Senor); //start thread
+ Thread thread_LED_Flash(led_R_B_flash); //start thread
+ Thread thread_Speaker_Sound(Speaker); //start thread
while (1) {
- Temp_Mutex.lock();
- local_Temp_V = Temp_Value;
- Temp_Mutex.unlock();
- printf("Temp = %.3f\n", local_Temp_V );
- wait(1.0);
+ Temp_Mutex.lock(); //Mutex lock temp value
+ local_Temp_V = Temp_Value; //store temp value in local variable
+ Temp_Mutex.unlock(); //mutex unlock
+ printf("Temp = %.3f\n", local_Temp_V ); //printf on serial of local temp value
+ Thread::wait(1.0); //thread wait
}