// Copyright 2020 The Fuchsia Authors. All rights reserved. | |
// Use of this source code is governed by a BSD-style license that can be | |
// found in the LICENSE file. | |
#include <stdint.h> | |
#include "debug.h" | |
#define UART_BASE (0x10A00000) | |
static volatile uint32_t* const uart_fstat = (uint32_t*)(UART_BASE + 0x18); | |
static volatile uint32_t* const uart_tx = (uint32_t*)(UART_BASE + 0x20); | |
void uart_pputc(char c) { | |
// spin while fifo is full | |
while (*uart_fstat & (1 << 24)) | |
; | |
*uart_tx = c; | |
} |