Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

features/unsupported/tests/mbed/freopen/main.cpp

Committer:
xuaner
Date:
2017-07-20
Revision:
1:3deb71413561
Parent:
0:f269e3021894

File content as of revision 1:3deb71413561:

#include "mbed.h"

#if !DEVICE_LOCALFILESYSTEM
  #error [NOT_SUPPORTED] LocalFileSystem not supported
#endif

#include "TextLCD.h"

int main() {
    printf("printf to stdout\n");

    // printf to specific peripherals
    Serial pc(USBTX, USBRX);
    pc.printf("Serial(USBTX, USBRX).printf\n");

    TextLCD lcd(p14, p15, p16, p17, p18, p19, p20, "lcd"); // rs, rw, e, d0-d3, name
    lcd.printf("TextLCD.printf\n");

    // change stdout to file
    LocalFileSystem local("local");
    freopen("/local/output.txt", "w", stdout);
    printf("printf redirected to LocalFileSystem\n");
    fclose(stdout);

    // change stdout to LCD
    freopen("/lcd", "w", stdout);
    printf("printf redirected to TextLCD\n");
    fclose(stdout);

    DigitalOut led(LED1);
    while (true) {
        led = !led;
        wait(1);
    }
}