tool/mbed/mbed-sdk/libraries/tests/mbed/stdio/main.cpp

   1 #include "mbed.h"
   2 #include "test_env.h"
   3
   4 /* This test purpose is to verify the behaviour when the program does not link
   5  * any symbol from the mbed library.
   6  * In the past we had an issue where the stdio retargeting was not linked in.
   7  */
   8
   9 int main() {
  10     MBED_HOSTTEST_TIMEOUT(20);
  11     MBED_HOSTTEST_SELECT(stdio_auto);
  12     MBED_HOSTTEST_DESCRIPTION(stdio);
  13     MBED_HOSTTEST_START("MBED_2");
  14
  15     DigitalOut led1(LED1);
  16     DigitalOut led2(LED2);
  17
  18     int value_int;
  19
  20
  21     notify_start(); // Just to sync with host test supervisor
  22
  23     const char* PRINT_PATTERN = "MBED: Your value was: %d\r\n";
  24
  25     while (true) {
  26         // SCANF PRINTF family
  27         value_int = 0;
  28         led1 = 1;
  29         scanf("%d", &value_int);
  30         printf(PRINT_PATTERN, value_int);
  31         led1 = 0;
  32
  33         // FSCANF, FPRINTF family
  34         value_int = 0;
  35         led2 = 1;
  36         fscanf(stdin, "%d", &value_int);
  37         fprintf(stdout, PRINT_PATTERN, value_int);
  38         led2 = 0;
  39     }
  40 }