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add simplified API to set UART threshold values for RX FIFO full and TX FIFO empty

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This commit is contained in:
kewal shah
2019-12-16 20:26:04 +00:00
committed by bot
parent f7b51c164d
commit eec8212237
5 changed files with 102 additions and 6 deletions
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components/driver/include/driver/uart.h
+28
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@@ -700,6 +700,34 @@ esp_err_t uart_pattern_queue_reset(uart_port_t uart_num, int queue_length);
*/
esp_err_t uart_set_mode(uart_port_t uart_num, uart_mode_t mode);
/**
* @brief Set uart threshold value for RX fifo full
* @note If application is using higher baudrate and it is observed that bytes
* in hardware RX fifo are overwritten then this threshold can be reduced
*
* @param uart_num UART_NUM_0, UART_NUM_1 or UART_NUM_2
* @param threshold Threshold value above which RX fifo full interrupt is generated
*
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG Parameter error
* - ESP_ERR_INVALID_STATE Driver is not installed
*/
esp_err_t uart_set_rx_full_threshold(uart_port_t uart_num, int threshold);
/**
* @brief Set uart threshold values for TX fifo empty
*
* @param uart_num UART_NUM_0, UART_NUM_1 or UART_NUM_2
* @param threshold Threshold value below which TX fifo empty interrupt is generated
*
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG Parameter error
* - ESP_ERR_INVALID_STATE Driver is not installed
*/
esp_err_t uart_set_tx_empty_threshold(uart_port_t uart_num, int threshold);
/**
* @brief UART set threshold timeout for TOUT feature
*