kopia lustrzana https://github.com/micropython/micropython
105 wiersze
3.5 KiB
C
105 wiersze
3.5 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"
|
|
#include "uart.h"
|
|
|
|
STATIC void uart_irq_handler(void *arg);
|
|
|
|
void uart_stdout_init(void) {
|
|
uart_config_t uartcfg = {
|
|
.baud_rate = MICROPY_HW_UART_REPL_BAUD,
|
|
.data_bits = UART_DATA_8_BITS,
|
|
.parity = UART_PARITY_DISABLE,
|
|
.stop_bits = UART_STOP_BITS_1,
|
|
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
|
|
.rx_flow_ctrl_thresh = 0
|
|
};
|
|
uart_param_config(MICROPY_HW_UART_REPL, &uartcfg);
|
|
|
|
const uint32_t rxbuf = 129; // IDF requires > 128 min
|
|
const uint32_t txbuf = 0;
|
|
|
|
uart_driver_install(MICROPY_HW_UART_REPL, rxbuf, txbuf, 0, NULL, 0);
|
|
|
|
uart_isr_handle_t handle;
|
|
uart_isr_free(MICROPY_HW_UART_REPL);
|
|
uart_isr_register(MICROPY_HW_UART_REPL, uart_irq_handler, NULL, ESP_INTR_FLAG_LOWMED | ESP_INTR_FLAG_IRAM, &handle);
|
|
uart_enable_rx_intr(MICROPY_HW_UART_REPL);
|
|
}
|
|
|
|
int uart_stdout_tx_strn(const char *str, size_t len) {
|
|
size_t remaining = len;
|
|
// TODO add a timeout
|
|
for (;;) {
|
|
int ret = uart_tx_chars(MICROPY_HW_UART_REPL, str, remaining);
|
|
if (ret == -1) {
|
|
return -1;
|
|
}
|
|
remaining -= ret;
|
|
if (remaining <= 0) {
|
|
break;
|
|
}
|
|
str += ret;
|
|
ulTaskNotifyTake(pdFALSE, 1);
|
|
}
|
|
return len - remaining;
|
|
}
|
|
|
|
// 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;
|
|
#if CONFIG_IDF_TARGET_ESP32S3
|
|
uart->int_clr.rxfifo_full_int_clr = 1;
|
|
uart->int_clr.rxfifo_tout_int_clr = 1;
|
|
#else
|
|
uart->int_clr.rxfifo_full = 1;
|
|
uart->int_clr.rxfifo_tout = 1;
|
|
uart->int_clr.frm_err = 1;
|
|
#endif
|
|
while (uart->status.rxfifo_cnt) {
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
uint8_t c = uart->fifo.rw_byte;
|
|
#elif CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
|
|
uint8_t c = READ_PERI_REG(UART_FIFO_AHB_REG(0)); // UART0
|
|
#endif
|
|
if (c == mp_interrupt_char) {
|
|
mp_sched_keyboard_interrupt();
|
|
} else {
|
|
// this is an inline function so will be in IRAM
|
|
ringbuf_put(&stdin_ringbuf, c);
|
|
}
|
|
}
|
|
}
|