mirror of
https://github.com/espressif/esp-idf.git
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130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
// Copyright 2021 Espressif Systems (Shanghai) CO LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License
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#include "esp_openthread_uart.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/select.h>
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#include "esp_check.h"
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#include "esp_err.h"
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#include "esp_log.h"
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#include "esp_openthread.h"
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#include "esp_openthread_common_macro.h"
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#include "esp_openthread_types.h"
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#include "esp_vfs_dev.h"
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#include "common/logging.hpp"
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#include "driver/uart.h"
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#include "utils/uart.h"
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static int s_uart_port;
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static int s_uart_fd;
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static uint8_t s_uart_buffer[ESP_OPENTHREAD_UART_BUFFER_SIZE];
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otError otPlatUartEnable(void)
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{
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return OT_ERROR_NONE;
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}
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otError otPlatUartDisable(void)
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{
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return OT_ERROR_NONE;
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}
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otError otPlatUartFlush(void)
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{
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return OT_ERROR_NONE;
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}
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otError otPlatUartSend(const uint8_t *buf, uint16_t buf_length)
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{
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int rval = write(s_uart_fd, buf, buf_length);
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if (rval != (int)buf_length) {
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return OT_ERROR_FAILED;
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}
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otPlatUartSendDone();
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return OT_ERROR_NONE;
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}
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esp_err_t esp_openthread_uart_init_port(const esp_openthread_uart_config_t *config)
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{
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ESP_RETURN_ON_ERROR(uart_param_config(config->port, &config->uart_config), OT_PLAT_LOG_TAG,
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"uart_param_config failed");
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ESP_RETURN_ON_ERROR(
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uart_set_pin(config->port, config->tx_pin, config->rx_pin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE),
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OT_PLAT_LOG_TAG, "uart_set_pin failed");
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ESP_RETURN_ON_ERROR(uart_driver_install(config->port, ESP_OPENTHREAD_UART_BUFFER_SIZE, 0, 0, NULL, 0),
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OT_PLAT_LOG_TAG, "uart_driver_install failed");
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esp_vfs_dev_uart_use_driver(config->port);
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return ESP_OK;
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}
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esp_err_t esp_openthread_uart_init(const esp_openthread_platform_config_t *config)
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{
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char uart_path[16];
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// Disable IO buffer.
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setvbuf(stdin, NULL, _IONBF, 0);
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setvbuf(stdout, NULL, _IONBF, 0);
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// Install UART driver for interrupt-driven reads and writes.
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s_uart_port = config->host_config.host_uart_config.port;
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ESP_RETURN_ON_ERROR(esp_openthread_uart_init_port(&config->host_config.host_uart_config), OT_PLAT_LOG_TAG,
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"esp_openthread_uart_init_port failed");
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esp_vfs_dev_uart_port_set_rx_line_endings(s_uart_port, ESP_LINE_ENDINGS_LF);
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esp_vfs_dev_uart_port_set_tx_line_endings(s_uart_port, ESP_LINE_ENDINGS_CRLF);
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snprintf(uart_path, sizeof(uart_path), "/dev/uart/%d", s_uart_port);
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s_uart_fd = open(uart_path, O_RDWR | O_NONBLOCK);
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return s_uart_fd >= 0 ? ESP_OK : ESP_FAIL;
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}
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void esp_openthread_uart_deinit()
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{
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if (s_uart_fd != -1) {
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close(s_uart_fd);
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s_uart_fd = -1;
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}
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uart_driver_delete(s_uart_port);
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}
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void esp_openthread_uart_update(esp_openthread_mainloop_context_t *mainloop)
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{
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FD_SET(s_uart_fd, &mainloop->read_fds);
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if (s_uart_fd > mainloop->max_fd) {
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mainloop->max_fd = s_uart_fd;
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}
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}
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esp_err_t esp_openthread_uart_process()
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{
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int rval = read(s_uart_fd, s_uart_buffer, sizeof(s_uart_buffer));
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if (rval > 0) {
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otPlatUartReceived(s_uart_buffer, (uint16_t)rval);
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} else if (rval > 0) {
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if (errno != EAGAIN) {
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otLogWarnPlat("read uart failed: %d", errno);
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return ESP_FAIL;
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}
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}
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return ESP_OK;
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}
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