54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : bsp_uart.h
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* Author : WCH
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* Version : V1.0.0
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* Date : 2022/05/10
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* Description : uart cfg.
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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#ifndef _BSP_UART_H_
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#define _BSP_UART_H_
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#include "ch32v20x.h"
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#include "net_config.h"
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/* Global define */
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#define BAUD_RATE 1000000
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#define size(a) (sizeof(a) / sizeof(*(a)))
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#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
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#define UART_RX_DMA_SIZE 2048 //Must be a power of 2 ( a%2^n = a&(2^n - 1) )
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#define ETH_RECEIVE_SIZE RECE_BUF_LEN
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#define UART_TX_BUF_NUM 3
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typedef enum { IDLE = 0, BUSY = !IDLE} Uart_TX_DMA_State;
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struct uart_data
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{
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uint8_t (*TX_buffer)[ETH_RECEIVE_SIZE]; /* receive from eth */
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uint8_t *RX_buffer; /* receive from uart */
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uint16_t *TX_data_length;
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uint16_t RX_data_length;
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uint16_t last_RX_DMA_length;
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uint32_t rx_read;
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uint32_t rx_write;
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uint8_t tx_read;
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uint8_t tx_write;
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uint8_t tx_remainBuffNum;
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Uart_TX_DMA_State uart_tx_dma_state; /* 0 -> idle, 1 -> busy */
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};
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extern struct uart_data uart_data_t;
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extern void BSP_Uart_Init(void);
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#endif /* end of bsp_uart.h */
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