mbed official / Mbed 2 deprecated rtos_mail

Basic example showing the Mail API

Dependencies:   mbed-rtos mbed

mbed 2 and mbed OS 5

This is an mbed 2 example. mbed OS 5 has integrated the mbed library with mbed-rtos. For an mbed-os example, please see:

Import programrtos_mail

mail example

Last commit 23 Jun 2017 by mbed_example

main.cpp@6:46af1199bf9b, 2017-02-15 (annotated)

Committer:
mbed_official
Date:
Wed Feb 15 14:01:04 2017 -0600
Revision:
6:46af1199bf9b
Parent:
5:6602f2907ac5 
Revert update to mbed-os.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 2:b84386915279 1 #include "mbed.h"
mbed_official 6:46af1199bf9b 2 #include "rtos.h"
emilmont 2:b84386915279 3
emilmont 2:b84386915279 4 /* Mail */
emilmont 2:b84386915279 5 typedef struct {
emilmont 2:b84386915279 6 float voltage; /* AD result of measured voltage */
emilmont 2:b84386915279 7 float current; /* AD result of measured current */
emilmont 2:b84386915279 8 uint32_t counter; /* A counter value */
emilmont 2:b84386915279 9 } mail_t;
emilmont 2:b84386915279 10
emilmont 2:b84386915279 11 Mail<mail_t, 16> mail_box;
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);
mbed_official 6:46af1199bf9b 22 Thread::wait(1000);
emilmont 2:b84386915279 23 }
emilmont 2:b84386915279 24 }
emilmont 2:b84386915279 25
emilmont 2:b84386915279 26 int main (void) {
mbed_official 6:46af1199bf9b 27 Thread thread;
Bartek Szatkowski 4:d9d4837009f6 28 thread.start(callback(send_thread));
emilmont 2:b84386915279 29
emilmont 2:b84386915279 30 while (true) {
emilmont 2:b84386915279 31 osEvent evt = mail_box.get();
emilmont 2:b84386915279 32 if (evt.status == osEventMail) {
emilmont 2:b84386915279 33 mail_t *mail = (mail_t*)evt.value.p;
emilmont 2:b84386915279 34 printf("\nVoltage: %.2f V\n\r" , mail->voltage);
emilmont 2:b84386915279 35 printf("Current: %.2f A\n\r" , mail->current);
emilmont 2:b84386915279 36 printf("Number of cycles: %u\n\r", mail->counter);
emilmont 2:b84386915279 37
emilmont 2:b84386915279 38 mail_box.free(mail);
emilmont 2:b84386915279 39 }
emilmont 2:b84386915279 40 }
emilmont 2:b84386915279 41 }