#ifndef __USART_H__
#define __USART_H__

#include "main.h"
//#define BAUDRATE_19200

#define EU_485_PIN				GPIO_PIN_7
#define EU_485_GPIO				GPIOB
#define OUT485_ENABLE 		GPIO_WriteBit(EU_485_GPIO, EU_485_PIN, Bit_SET);
#define OUT485_DISABLE 		GPIO_WriteBit(EU_485_GPIO, EU_485_PIN, Bit_RESET);

//#define UART_GPIO_REMAP_ENABLE
#ifdef UART_GPIO_REMAP_ENABLE
	#define UART_GPIO_REMAP			GPIO_Remap_USART1
	#define EU_RCC_GPIO				RCC_APB2Periph_GPIOB
	#define EU_TX_PIN				GPIO_Pin_6
	#define EU_RX_PIN				GPIO_Pin_7
	#define EU_RX_GPIO				GPIOB
	#define EU_TX_GPIO				GPIOB
#else
	#define EU_RCC_GPIO				RCC_APB2Periph_GPIOA
	#define EU_TX_PIN				GPIO_PIN9
	#define EU_RX_PIN				GPIO_PIN_10
	#define EU_RX_GPIO				GPIOA
	#define EU_TX_GPIO				GPIOA
#endif

#ifdef BAUDRATE_19200
#define	EXUART_BAUD_RADE		19200
#else
#define	EXUART_BAUD_RADE		115200
#endif

#define EUART_RX_DMA_CH	 		DMA1_Channel3
#define EUART_TX_DMA_CH			DMA1_Channel2

#define EUART_TX_FRM_SIZE		14				//·¢ËͶÓÁÐÖеÄ×î´óÖ¡Êý
#define EUART_TX_FRMBUF_SIZE	200				//·¢ËͶÓÁÐÿ֡»º´æ´óС
#define EUART_RX_BUF_SIZE		200				//½ÓÊÕ»º´æ´óС

#define EXT_UART				USART1
#define EXT_UART_RCC			RCC_APB2Periph_USART1

typedef struct _EUART_Frame {					//Êý¾Ý·¢ËÍÖ¡¶ÓÁнṹÌå
	int32_t len;								//Ö¡³¤¶È
	uint8_t buf[EUART_TX_FRMBUF_SIZE];			//Ö¡Êý¾Ý
} EUART_Frame;

void Uart1_Init(void);

void UART_CheckReceive(void);
void UART_CheckSend(void);
void UART_PushFrame(uint8_t* pdata, int32_t data_len);
void UART_PopFrame(void);
extern void (*Usart1ParseDataCallback)(uint8_t);
extern uint8_t m_EUART_DMA_RXBuf[EUART_RX_BUF_SIZE];	

#endif