61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* Development of the code in this file was sponsored by Microbric Pty Ltd
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2016 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 "driver/uart.h"
|
|
#include "soc/uart_periph.h"
|
|
|
|
#include "py/runtime.h"
|
|
#include "py/mphal.h"
|
|
|
|
STATIC void uart_irq_handler(void *arg);
|
|
|
|
void uart_init(void) {
|
|
uart_isr_handle_t handle;
|
|
uart_isr_register(UART_NUM_0, uart_irq_handler, NULL, ESP_INTR_FLAG_LOWMED | ESP_INTR_FLAG_IRAM, &handle);
|
|
uart_enable_rx_intr(UART_NUM_0);
|
|
}
|
|
|
|
// all code executed in ISR must be in IRAM, and any const data must be in DRAM
|
|
STATIC void IRAM_ATTR uart_irq_handler(void *arg) {
|
|
volatile uart_dev_t *uart = &UART0;
|
|
uart->int_clr.rxfifo_full = 1;
|
|
uart->int_clr.frm_err = 1;
|
|
uart->int_clr.rxfifo_tout = 1;
|
|
while (uart->status.rxfifo_cnt) {
|
|
uint8_t c = uart->fifo.rw_byte;
|
|
if (c == mp_interrupt_char) {
|
|
mp_keyboard_interrupt();
|
|
} else {
|
|
// this is an inline function so will be in IRAM
|
|
ringbuf_put(&stdin_ringbuf, c);
|
|
}
|
|
}
|
|
}
|