Felipe Neves / Mbed OS TEN_mbedos_threads

TEN MBED OS threads lab

main.cpp@0:95bee34b8805, 2017-01-29 (annotated)

Committer:
uLipe
Date:
Sun Jan 29 20:42:49 2017 +0000
Revision:
0:95bee34b8805
first;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
uLipe 0:95bee34b8805 1 /**
uLipe 0:95bee34b8805 2 * @brief first thread control program with MBED OS
uLipe 0:95bee34b8805 3 */
uLipe 0:95bee34b8805 4 #include "mbed.h"
uLipe 0:95bee34b8805 5 #include "rtos.h"
uLipe 0:95bee34b8805 6
uLipe 0:95bee34b8805 7 /* declares threads for this demo: */
uLipe 0:95bee34b8805 8 const size_t a_stk_size = 1024;
uLipe 0:95bee34b8805 9 uint8_t a_stk[a_stk_size];
uLipe 0:95bee34b8805 10 Thread a_thread(osPriorityNormal, a_stk_size, &a_stk[0]);
uLipe 0:95bee34b8805 11
uLipe 0:95bee34b8805 12 const size_t b_stk_size = 1024;
uLipe 0:95bee34b8805 13 uint8_t b_stk[b_stk_size];
uLipe 0:95bee34b8805 14 Thread b_thread(osPriorityNormal, b_stk_size, &b_stk[0]);
uLipe 0:95bee34b8805 15
uLipe 0:95bee34b8805 16 /* reserve the debbuger uart to shell interface */
uLipe 0:95bee34b8805 17 Serial pc_serial(USBTX,USBRX);
uLipe 0:95bee34b8805 18
uLipe 0:95bee34b8805 19
uLipe 0:95bee34b8805 20 /**
uLipe 0:95bee34b8805 21 * @brief thread a function
uLipe 0:95bee34b8805 22 */
uLipe 0:95bee34b8805 23 static void thread_a(void)
uLipe 0:95bee34b8805 24 {
uLipe 0:95bee34b8805 25 uint32_t execs = 0;
uLipe 0:95bee34b8805 26 pc_serial.printf("## started thread_a execution! ##\n\r");
uLipe 0:95bee34b8805 27
uLipe 0:95bee34b8805 28 for(;;) {
uLipe 0:95bee34b8805 29 execs++;
uLipe 0:95bee34b8805 30 /* adds dummy processing */
uLipe 0:95bee34b8805 31 for(int i = 0 ; i < 0xFFFFFF; i++);
uLipe 0:95bee34b8805 32 pc_serial.printf("## thread_a executed %d times! ##\n\r", execs);
uLipe 0:95bee34b8805 33 a_thread.yield();
uLipe 0:95bee34b8805 34 }
uLipe 0:95bee34b8805 35 }
uLipe 0:95bee34b8805 36
uLipe 0:95bee34b8805 37
uLipe 0:95bee34b8805 38 /**
uLipe 0:95bee34b8805 39 * @brief thread a function
uLipe 0:95bee34b8805 40 */
uLipe 0:95bee34b8805 41 static void thread_b(void)
uLipe 0:95bee34b8805 42 {
uLipe 0:95bee34b8805 43 uint32_t execs = 0;
uLipe 0:95bee34b8805 44 pc_serial.printf("## started thread_b execution! ##\n\r");
uLipe 0:95bee34b8805 45
uLipe 0:95bee34b8805 46 for(;;) {
uLipe 0:95bee34b8805 47 execs++;
uLipe 0:95bee34b8805 48 /* adds dummy processing */
uLipe 0:95bee34b8805 49 for(int i = 0 ; i < 0xFFFFFF; i++);
uLipe 0:95bee34b8805 50 pc_serial.printf("## thread_b executed %d times! ##\n\r", execs);
uLipe 0:95bee34b8805 51 b_thread.yield();
uLipe 0:95bee34b8805 52 }
uLipe 0:95bee34b8805 53 }
uLipe 0:95bee34b8805 54
uLipe 0:95bee34b8805 55
uLipe 0:95bee34b8805 56
uLipe 0:95bee34b8805 57 /**
uLipe 0:95bee34b8805 58 * @brief main application loop
uLipe 0:95bee34b8805 59 */
uLipe 0:95bee34b8805 60 int main(void)
uLipe 0:95bee34b8805 61 {
uLipe 0:95bee34b8805 62 pc_serial.baud(115200);
uLipe 0:95bee34b8805 63 a_thread.start(thread_a);
uLipe 0:95bee34b8805 64 b_thread.start(thread_b);
uLipe 0:95bee34b8805 65 return 0;
uLipe 0:95bee34b8805 66 }