napoleon leoni / Mbed 2 deprecated rtosIPCtesting

first compiled version

Dependencies:   mbed-rtos mbed C12832_lcd LM75B

main.cpp@2:43cd60e0e32f, 2014-02-28 (annotated)

Committer:
robertwharrell
Date:
Fri Feb 28 22:05:13 2014 +0000
Revision:
2:43cd60e0e32f
Parent:
1:83bc9f91d154
Child:
4:6c17983d6192
Added function descriptions from the lab and generic prints to terminal for threads

Who changed what in which revision?

UserRevisionLine numberNew contents of line
robertwharrell 1:83bc9f91d154 1 //Rob in the house
robertwharrell 1:83bc9f91d154 2
nleoni 0:7ae4f23f84a3 3 #include "mbed.h"
nleoni 0:7ae4f23f84a3 4 #include "rtos.h"
nleoni 0:7ae4f23f84a3 5
robertwharrell 2:43cd60e0e32f 6 Serial pc(USBTX, USBRX); //To differentiate from LCD functions
robertwharrell 2:43cd60e0e32f 7
nleoni 0:7ae4f23f84a3 8 AnalogIn pot1(p19);
nleoni 0:7ae4f23f84a3 9 Queue<float,10> potReadingQueue;
nleoni 0:7ae4f23f84a3 10
robertwharrell 2:43cd60e0e32f 11
robertwharrell 2:43cd60e0e32f 12 /******************************************************************
robertwharrell 2:43cd60e0e32f 13 *
robertwharrell 2:43cd60e0e32f 14 *An LCD thread that updates the LCD based on information
robertwharrell 2:43cd60e0e32f 15 *received from other threads via IPC
robertwharrell 2:43cd60e0e32f 16 *
robertwharrell 2:43cd60e0e32f 17 *Uses the top 3 lines of the LCD to reflect the pot, the
robertwharrell 2:43cd60e0e32f 18 *temperature, and the cookie. This task must use IPC (with
robertwharrell 2:43cd60e0e32f 19 *timeout) methods to get data from each of the previous threads
robertwharrell 2:43cd60e0e32f 20 *
robertwharrell 2:43cd60e0e32f 21 *******************************************************************/
nleoni 0:7ae4f23f84a3 22 void lcdUpdate(void const*){
nleoni 0:7ae4f23f84a3 23 while(1){
nleoni 0:7ae4f23f84a3 24 osEvent evt = potReadingQueue.get();
nleoni 0:7ae4f23f84a3 25 if (evt.status == osEventMail) {
nleoni 0:7ae4f23f84a3 26 float *queue = (float*)evt.value.p;
robertwharrell 2:43cd60e0e32f 27 pc.printf("\nVoltage: %.2f V\n\r" , *queue);
robertwharrell 2:43cd60e0e32f 28
robertwharrell 2:43cd60e0e32f 29 pc.printf("LCD updated");
nleoni 0:7ae4f23f84a3 30 Thread::wait(1000);
nleoni 0:7ae4f23f84a3 31 }
nleoni 0:7ae4f23f84a3 32 }
nleoni 0:7ae4f23f84a3 33 }
nleoni 0:7ae4f23f84a3 34
robertwharrell 2:43cd60e0e32f 35 /******************************************************************
robertwharrell 2:43cd60e0e32f 36 *
robertwharrell 2:43cd60e0e32f 37 *A POT thread that reads the pot value in a polling loop
robertwharrell 2:43cd60e0e32f 38 *every 10 seconds and sends value to LCD thread via IPC Queue
robertwharrell 2:43cd60e0e32f 39 *
robertwharrell 2:43cd60e0e32f 40 *******************************************************************/
nleoni 0:7ae4f23f84a3 41 void readPOT(void const*){
nleoni 0:7ae4f23f84a3 42 while(1){
nleoni 0:7ae4f23f84a3 43 float *queue;
nleoni 0:7ae4f23f84a3 44 *queue = pot1;
nleoni 0:7ae4f23f84a3 45 potReadingQueue.put(queue);
robertwharrell 2:43cd60e0e32f 46 pc.printf("POT read");
robertwharrell 2:43cd60e0e32f 47 Thread::wait(10000);
robertwharrell 2:43cd60e0e32f 48 }
robertwharrell 2:43cd60e0e32f 49
robertwharrell 2:43cd60e0e32f 50 }
robertwharrell 2:43cd60e0e32f 51
robertwharrell 2:43cd60e0e32f 52 /******************************************************************
robertwharrell 2:43cd60e0e32f 53 *
robertwharrell 2:43cd60e0e32f 54 *A TEMP thread that read the temperature every 60 seconds
robertwharrell 2:43cd60e0e32f 55 *and sends the value to the LCD task via IPC Queue
robertwharrell 2:43cd60e0e32f 56 *
robertwharrell 2:43cd60e0e32f 57 *******************************************************************/
robertwharrell 2:43cd60e0e32f 58 void readTemp(void const*){
robertwharrell 2:43cd60e0e32f 59 while(1){
robertwharrell 2:43cd60e0e32f 60 pc.printf("TEMP read");
robertwharrell 2:43cd60e0e32f 61 Thread::wait(60000);
nleoni 0:7ae4f23f84a3 62 }
nleoni 0:7ae4f23f84a3 63
nleoni 0:7ae4f23f84a3 64 }
nleoni 0:7ae4f23f84a3 65
robertwharrell 2:43cd60e0e32f 66 /******************************************************************
robertwharrell 2:43cd60e0e32f 67 *
robertwharrell 2:43cd60e0e32f 68 *A SCANF thread that reads in a fortune cookie from user
robertwharrell 2:43cd60e0e32f 69 *and sends it to the LCD task via IPC Memory Pool
robertwharrell 2:43cd60e0e32f 70 *
robertwharrell 2:43cd60e0e32f 71 *******************************************************************/
robertwharrell 2:43cd60e0e32f 72 void threadCookie(void const*){
robertwharrell 2:43cd60e0e32f 73 //Checks often but low priority?
robertwharrell 2:43cd60e0e32f 74 while(1){
robertwharrell 2:43cd60e0e32f 75 Thread::wait(1000);
robertwharrell 2:43cd60e0e32f 76 }
nleoni 0:7ae4f23f84a3 77 }
nleoni 0:7ae4f23f84a3 78
robertwharrell 2:43cd60e0e32f 79
robertwharrell 2:43cd60e0e32f 80 /******************************************************************
robertwharrell 2:43cd60e0e32f 81 *
robertwharrell 2:43cd60e0e32f 82 *A TOD thread that updates the 4th line of the LCD with time
robertwharrell 2:43cd60e0e32f 83 *of day once a minute. It shares the LCD with the LCD thread
robertwharrell 2:43cd60e0e32f 84 *using mutual exclusion
robertwharrell 2:43cd60e0e32f 85 *
robertwharrell 2:43cd60e0e32f 86 *******************************************************************/
robertwharrell 2:43cd60e0e32f 87 void threadTOD(void const*){
robertwharrell 2:43cd60e0e32f 88 while(1){
robertwharrell 2:43cd60e0e32f 89 pc.printf("TOD updated");
robertwharrell 2:43cd60e0e32f 90 Thread::wait(60000);
robertwharrell 2:43cd60e0e32f 91 }
nleoni 0:7ae4f23f84a3 92 }
nleoni 0:7ae4f23f84a3 93
nleoni 0:7ae4f23f84a3 94 DigitalOut myled(LED1);
nleoni 0:7ae4f23f84a3 95
nleoni 0:7ae4f23f84a3 96 int main() {
nleoni 0:7ae4f23f84a3 97 Thread threadLCD(lcdUpdate);
nleoni 0:7ae4f23f84a3 98 Thread threadPOT(readPOT);
nleoni 0:7ae4f23f84a3 99 Thread threadTemp(readTemp);
nleoni 0:7ae4f23f84a3 100
nleoni 0:7ae4f23f84a3 101 while(1) {
nleoni 0:7ae4f23f84a3 102 }
nleoni 0:7ae4f23f84a3 103 }