mbed-os/libraries/tests/mbed/stdio/main.cpp

38 lines
827 B
C++

#include "mbed.h"
#include "test_env.h"
/* This test purpose is to verify the behaviour when the program does not link
* any symbol from the mbed library.
* In the past we had an issue where the stdio retargeting was not linked in.
*/
int main() {
DigitalOut led1(LED1);
DigitalOut led2(LED2);
union {
int value_int;
};
notify_start();
const char* PRINT_PATTERN = "MBED: Your value was: %d\r\n";
while (true)
{
// SCANF PRINTF family
value_int = 0;
led1 = 1;
scanf("%d", &value_int);
printf(PRINT_PATTERN, value_int);
led1 = 0;
// FSCANF, FPRINTF family
value_int = 0;
led2 = 1;
fscanf(stdin, "%d", &value_int);
fprintf(stdout, PRINT_PATTERN, value_int);
led2 = 0;
}
}