/*
 * Copyright (c) 2016 Brian Swetland
 *
 * Use of this source code is governed by a MIT-style
 * license that can be found in the LICENSE file or at
 * https://opensource.org/licenses/MIT
 */

#include <kernel/thread.h>
#include <platform/debug.h>

#include <driverlib/uart.h>

#define UART0_BASE 0x40001000

void platform_dputc(char c) {
    UARTCharPut(UART0_BASE, c);
}

int platform_dgetc(char *c, bool wait) {
    int n;
    for (;;) {
        if ((n = UARTCharGetNonBlocking(UART0_BASE)) < 0) {
            if (wait) {
                thread_yield();
            } else {
                return -1;
            }
        } else {
            *c = n;
            return 0;
        }
    }
}