esp_mphal.c

/*
 * This file is part of the Micro Python project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Damien P. George
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include <stdio.h>
#include "ets_sys.h"
#include "etshal.h"
#include "uart.h"
#include "esp_mphal.h"
#include "user_interface.h"
#include "ets_alt_task.h"
#include "py/obj.h"
#include "py/mpstate.h"
#include "py/runtime.h"
#include "extmod/misc.h"
#include "lib/utils/pyexec.h"

STATIC byte input_buf_array[256];
ringbuf_t input_buf = {input_buf_array, sizeof(input_buf_array)};
void mp_hal_debug_tx_strn_cooked(void *env, const char *str, uint32_t len);
const mp_print_t mp_debug_print = {NULL, mp_hal_debug_tx_strn_cooked};

void mp_hal_init(void) {
    //ets_wdt_disable(); // it's a pain while developing
    mp_hal_rtc_init();
    uart_init(UART_BIT_RATE_115200, UART_BIT_RATE_115200);
}

void mp_hal_delay_us(uint32_t us) {
    uint32_t start = system_get_time();
    while (system_get_time() - start < us) {
        ets_event_poll();
    }
}

int mp_hal_stdin_rx_chr(void) {
    for (;;) {
        int c = ringbuf_get(&input_buf);
        if (c != -1) {
            return c;
        }
        #if 0
        // Idles CPU but need more testing before enabling
        if (!ets_loop_iter()) {
            asm("waiti 0");
        }
        #else
        mp_hal_delay_us(1);