mirror of
https://github.com/espressif/esp-protocols.git
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78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
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// Copyright 2021 Espressif Systems (Shanghai) PTE 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 "cxx_include/esp_modem_dte.hpp"
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#include "esp_log.h"
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#include "driver/uart.h"
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#include "esp_modem_config.h"
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#include "exception_stub.hpp"
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#include "esp_vfs_dev.h"
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#include <sys/fcntl.h>
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static const char *TAG = "uart_terminal";
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namespace esp_modem::terminal {
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struct uart_resource {
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explicit uart_resource(const esp_modem_dte_config *config);
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~uart_resource();
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uart_port_t port;
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int fd;
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};
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uart_resource::uart_resource(const esp_modem_dte_config *config) :
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port(-1), fd(-1)
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{
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/* Config UART */
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uart_config_t uart_config = {};
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uart_config.baud_rate = config->vfs_config.baud_rate;
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uart_config.data_bits = UART_DATA_8_BITS;
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uart_config.parity = UART_PARITY_DISABLE;
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uart_config.stop_bits = UART_STOP_BITS_1;
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uart_config.flow_ctrl = UART_HW_FLOWCTRL_DISABLE;
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uart_config.source_clk = UART_SCLK_REF_TICK;
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throw_if_esp_fail(uart_param_config(config->vfs_config.port_num, &uart_config), "config uart parameter failed");
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throw_if_esp_fail(uart_set_pin(config->vfs_config.port_num, config->vfs_config.tx_io_num, config->vfs_config.rx_io_num,
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UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE), "config uart gpio failed");
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throw_if_esp_fail(uart_driver_install(config->vfs_config.port_num, config->vfs_config.rx_buffer_size, config->vfs_config.tx_buffer_size,
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0, nullptr, 0), "install uart driver failed");
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// throw_if_esp_fail(uart_set_rx_timeout(config->vfs_config.port_num, 1), "set rx timeout failed");
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//
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// throw_if_esp_fail(uart_set_rx_full_threshold(config->uart_config.port_num, 64), "config rx full threshold failed");
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/* mark UART as initialized */
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port = config->vfs_config.port_num;
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esp_vfs_dev_uart_use_driver(port);
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fd = open(config->vfs_config.dev_name, O_RDWR);
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throw_if_false(fd >= 0, "Cannot open the fd");
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}
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uart_resource::~uart_resource() {
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if (port >= UART_NUM_0 && port < UART_NUM_MAX) {
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uart_driver_delete(port);
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}
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}
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} // namespace esp_modem::terminal
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