/*
 * drv_usart.h
 *
 *  Created on: Mar 31, 2023
 *      Author: gxms0
 */

#ifndef BSP_DRV_UART_H_
#define BSP_DRV_UART_H_

#include "ch32v20x.h"
#include "string.h"

#define RingBuffSize 128


typedef enum
{
    RINGBUFFER_NORMAL,
    RINGBUFFER_EMPTY,
    RINGBUFFER_FULL,
    RINGBUFFER_HALFFULL,
}RingBuffer_State;

typedef struct
{
    uint8_t  buff[RingBuffSize];
    uint16_t Write;
    uint16_t Read;
    uint16_t Size;
}RingBuff_Type;




typedef enum eUART_FIFO_MODE
{
    UART_FIFO_BLOCK = 0,
    UART_FIFO_IT,
    UART_FIFO_DMA,
} uart_fifo_mode_t;




typedef struct sUART
{
    USART_TypeDef *USART;

    GPIO_TypeDef *GPIO_Tx;
    GPIO_TypeDef *GPIO_Rx;
    uint32_t Pin_Tx;
    uint32_t Pin_Rx;


    uint8_t *buffer_rx;
    uint8_t *buffer_tx;

    size_t buffer_rx_head;
    size_t buffer_rx_tail;
    size_t buffer_tx_head;
    size_t buffer_tx_tail;
    size_t buffer_rx_len;
    size_t buffer_tx_len;
    size_t buffer_tx_len_2;



    struct sUART *next_ptr;

}UART_t;

typedef UART_t* UART_ptr;



void usart_init(void);

void usart_config(UART_ptr ptr,USART_TypeDef *UART, GPIO_TypeDef *GPIO_Tx, uint32_t Pin_Tx, GPIO_TypeDef *GPIO_Rx, uint32_t Pin_Rx,
                uint32_t BaudRate, uint16_t WordLength, uint16_t StopBits, uint16_t Parity,
                uint32_t buff_tx_len,uint32_t buff_rx_len);

size_t usart_read(UART_ptr ptr,unsigned char *buff,const unsigned int len);

size_t usart_write(UART_ptr ptr,const unsigned char *buff,const unsigned int len);








#endif /* BSP_DRV_UART_H_ */