109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/****************************************************************************
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Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
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This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
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be copied by any method or incorporated into another program without
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the express written consent of Aerospace C.Power. This Information or any portion
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thereof remains the property of Aerospace C.Power. The Information contained herein
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is believed to be accurate and Aerospace C.Power assumes no responsibility or
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liability for its use in any way and conveys no license or title under
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any patent or copyright and makes no representation or warranty that this
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Information is free from patent or copyright infringement.
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****************************************************************************/
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#ifndef _APP_UART_H_
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#define _APP_UART_H_
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#include "app_flash.h"
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#include "app_types.h"
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#include "app_common.h"
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/* the buffer size for uart receive frame */
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#define UART_RCV_BUF_LEN (1024)
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/* cache uart recv buffer */
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#define UART_BUF_MAX_LEN (800)
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/* uart recv data timeout, clearn. unit is ms */
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#define UART_RECV_TIMEOUT (1000)
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typedef struct _uart_handle_buffer {
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/* buffer handle */
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uint16_t handle;
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/* buffer length */
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uint16_t buff_len;
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/* run time */
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uint32_t boot_tm;
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/* temp buffer */
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uint8_t *buff_tmp;
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} uart_handle_buffer;
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/**
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* @brief app_uart_is_valid() - check uart param is valid.
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*
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* @param [in] baudrate: baud rate.
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* @param [in] data_bits: data bits:5,6,7,8.
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* @param [in] stop_bits: stop bits:1,1.5,2.
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* @param [in] parity: parity,NONE:0, ODD:1,EVEN:2.
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* @param [in] thresholdvalue: threshold value,20-1000.
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*
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* @return true: succeeded;
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* @return false: failed;
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*/
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uint8_t app_uart_is_valid(uint32_t baudrate, uint8_t data_bits,
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uint8_t stop_bits, uint8_t parity, uint32_t thresholdvalue);
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/**
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* @brief app_uart_tx() - send data to uart.
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*
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* @param [in] hdl: uart handle.
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* @param [in] data: data will be send uart.
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* @param [in] data_length: data length.
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*
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* @return 0: succeeded;
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* @return others: failed;
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*/
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uint16_t app_uart_tx(iot_uart_h hdl, uint8_t *data, uint16_t data_length);
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/**
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* @brief app_uart_buf_clear() - clearn buffer.
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*
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* @param None.
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*
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* @return None.
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*/
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void app_uart_buf_clear(void);
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/**
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* @brief app_get_uart_buf_info() - get golbal uart info.
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*
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* @param None.
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*
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* @return uart info, point to g_uart_buffer;
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*/
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uart_handle_buffer *app_get_uart_buf_info(void);
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/**
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* @brief app_uart_reassign_pin() - set uart port tx/rx pin before iot_uart_open.
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*
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* @param [in] port: open port, see IOT_UART_PORTXXX,as IOT_UART_PORT0.
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* @param [in] rx_pin: define uart rx pin.
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* @param [in] tx_pin: define uart tx pin.
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*
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* @return 0: succeeded;
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* @return others: failed;
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*/
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uint8_t app_uart_reassign_pin(uint8_t port, uint8_t rx_pin, uint8_t tx_pin);
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/**
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* @brief app_uart_init() - uart init.
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*
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* @param [out] uart_handle: open uart, return handle.
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*
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* @return 0: succeeded;
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* @return others: failed;
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*/
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uint16_t app_uart_init(iot_uart_h *uart_handle);
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#endif /* _APP_UART_H_ */
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