mbed_example / Mbed OS rtos_mail

mail example

main.cpp@6:9a5d61ef4113, 2017-06-23 (annotated)

Committer:
sarahmarshy
Date:
Fri Jun 23 14:57:53 2017 -0500
Revision:
6:9a5d61ef4113
Parent:
5:6602f2907ac5 
"Update mbed-os"

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 2:b84386915279 1 #include "mbed.h"
emilmont 2:b84386915279 2
emilmont 2:b84386915279 3 /* Mail */
emilmont 2:b84386915279 4 typedef struct {
emilmont 2:b84386915279 5 float voltage; /* AD result of measured voltage */
emilmont 2:b84386915279 6 float current; /* AD result of measured current */
emilmont 2:b84386915279 7 uint32_t counter; /* A counter value */
emilmont 2:b84386915279 8 } mail_t;
emilmont 2:b84386915279 9
emilmont 2:b84386915279 10 Mail<mail_t, 16> mail_box;
mab5449 5:6602f2907ac5 11 Thread thread;
emilmont 2:b84386915279 12
Bartek Szatkowski 4:d9d4837009f6 13 void send_thread (void) {
emilmont 2:b84386915279 14 uint32_t i = 0;
emilmont 2:b84386915279 15 while (true) {
emilmont 2:b84386915279 16 i++; // fake data update
emilmont 2:b84386915279 17 mail_t *mail = mail_box.alloc();
emilmont 2:b84386915279 18 mail->voltage = (i * 0.1) * 33;
emilmont 2:b84386915279 19 mail->current = (i * 0.1) * 11;
emilmont 2:b84386915279 20 mail->counter = i;
emilmont 2:b84386915279 21 mail_box.put(mail);
mab5449 5:6602f2907ac5 22 wait(1);
emilmont 2:b84386915279 23 }
emilmont 2:b84386915279 24 }
emilmont 2:b84386915279 25
emilmont 2:b84386915279 26 int main (void) {
Bartek Szatkowski 4:d9d4837009f6 27 thread.start(callback(send_thread));
emilmont 2:b84386915279 28
emilmont 2:b84386915279 29 while (true) {
emilmont 2:b84386915279 30 osEvent evt = mail_box.get();
emilmont 2:b84386915279 31 if (evt.status == osEventMail) {
emilmont 2:b84386915279 32 mail_t *mail = (mail_t*)evt.value.p;
emilmont 2:b84386915279 33 printf("\nVoltage: %.2f V\n\r" , mail->voltage);
emilmont 2:b84386915279 34 printf("Current: %.2f A\n\r" , mail->current);
emilmont 2:b84386915279 35 printf("Number of cycles: %u\n\r", mail->counter);
emilmont 2:b84386915279 36
emilmont 2:b84386915279 37 mail_box.free(mail);
emilmont 2:b84386915279 38 }
emilmont 2:b84386915279 39 }
emilmont 2:b84386915279 40 }