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feat(eppp): Add support for UART flow control

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Closes https://github.com/espressif/esp-protocols/issues/870
This commit is contained in:
David Cermak
2025-08-25 16:29:44 +02:00
parent 497ee2d6d4
commit cd57f1bb13
2 changed files with 9 additions and 2 deletions
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5
components/eppp_link/eppp_uart.c
View File

@@ -80,12 +80,12 @@ static esp_err_t init_uart(struct eppp_uart *h, struct eppp_config_uart_s *confi
uart_config.data_bits = UART_DATA_8_BITS; uart_config.data_bits = UART_DATA_8_BITS;
uart_config.parity = UART_PARITY_DISABLE; uart_config.parity = UART_PARITY_DISABLE;
uart_config.stop_bits = UART_STOP_BITS_1; uart_config.stop_bits = UART_STOP_BITS_1;
uart_config.flow_ctrl = UART_HW_FLOWCTRL_DISABLE; uart_config.flow_ctrl = config->flow_control;
uart_config.source_clk = UART_SCLK_DEFAULT; uart_config.source_clk = UART_SCLK_DEFAULT;
ESP_RETURN_ON_ERROR(uart_driver_install(h->uart_port, config->rx_buffer_size, 0, config->queue_size, &h->uart_event_queue, 0), TAG, "Failed to install UART"); ESP_RETURN_ON_ERROR(uart_driver_install(h->uart_port, config->rx_buffer_size, 0, config->queue_size, &h->uart_event_queue, 0), TAG, "Failed to install UART");
ESP_RETURN_ON_ERROR(uart_param_config(h->uart_port, &uart_config), TAG, "Failed to set params"); ESP_RETURN_ON_ERROR(uart_param_config(h->uart_port, &uart_config), TAG, "Failed to set params");
ESP_RETURN_ON_ERROR(uart_set_pin(h->uart_port, config->tx_io, config->rx_io, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE), TAG, "Failed to set UART pins"); ESP_RETURN_ON_ERROR(uart_set_pin(h->uart_port, config->tx_io, config->rx_io, config->rts_io, config->cts_io), TAG, "Failed to set UART pins");
ESP_RETURN_ON_ERROR(uart_set_rx_timeout(h->uart_port, 1), TAG, "Failed to set UART Rx timeout"); ESP_RETURN_ON_ERROR(uart_set_rx_timeout(h->uart_port, 1), TAG, "Failed to set UART Rx timeout");
return ESP_OK; return ESP_OK;
} }
@@ -269,6 +269,7 @@ eppp_transport_handle_t eppp_uart_init(struct eppp_config_uart_s *config)
ESP_GOTO_ON_ERROR(init_uart(h, config), err, TAG, "Failed to init UART"); ESP_GOTO_ON_ERROR(init_uart(h, config), err, TAG, "Failed to init UART");
return &h->parent; return &h->parent;
err: err:
free(h);
return NULL; return NULL;
} }

6
components/eppp_link/include/eppp_link.h
View File

@@ -34,6 +34,9 @@ extern "C" {
.rx_io = 26, \ .rx_io = 26, \
.queue_size = 16, \ .queue_size = 16, \
.rx_buffer_size = 1024, \ .rx_buffer_size = 1024, \
.rts_io = -1, \
.cts_io = -1, \
.flow_control = 0, \
}, \ }, \
#define EPPP_DEFAULT_SDIO_CONFIG() \ #define EPPP_DEFAULT_SDIO_CONFIG() \
@@ -135,6 +138,9 @@ typedef struct eppp_config_t {
int rx_io; int rx_io;
int queue_size; int queue_size;
int rx_buffer_size; int rx_buffer_size;
int rts_io;
int cts_io;
int flow_control;
} uart; } uart;
struct eppp_config_sdio_s { struct eppp_config_sdio_s {