#include "usart1.h"
#include "dev.h"
#include "delay.h"
#include "string.h"

#define	USART1_RX_MAX		40
#define USART1_TX_MAX		40
uint8_t USART1_RX_BUF[USART1_RX_MAX] = {0};					//接收缓存区
uint8_t USART1_TX_BUF[USART1_TX_MAX] = {0};					//发送缓存区

Uart_Type u1;
void usart1_init(void)
{
	GPIO_InitTypeDef 	GPIO_InitStructure;
	USART_InitTypeDef 	USART_InitStructure;
	
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); 			//使能GPIOA时钟
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);			//使能USART1时钟
 
	GPIO_PinAFConfig(DBG_RXD_Port,GPIO_PinSource9,GPIO_AF_USART1); 	//GPIOA9复用为USART1
	GPIO_PinAFConfig(DBG_TXD_Port,GPIO_PinSource10,GPIO_AF_USART1); //GPIOA10复用为USART1

	GPIO_InitStructure.GPIO_Pin 	= DBG_RXD_Pin | DBG_TXD_Pin; 	//GPIOA9与GPIOA10
	GPIO_InitStructure.GPIO_Mode 	= GPIO_Mode_AF;					//复用功能
	GPIO_InitStructure.GPIO_Speed 	= GPIO_Speed_50MHz;				//速度50MHz
	GPIO_InitStructure.GPIO_OType 	= GPIO_OType_PP; 				//推挽复用输出
	GPIO_InitStructure.GPIO_PuPd 	= GPIO_PuPd_UP; 				//上拉
	GPIO_Init(DBG_RXD_Port,&GPIO_InitStructure); 					//初始化
	
	USART_InitStructure.USART_BaudRate 		= U1_BAUDRETE;				//波特率设置
	USART_InitStructure.USART_WordLength	= USART_WordLength_8b;	//字长为8位数据格式
	USART_InitStructure.USART_StopBits 		= USART_StopBits_1;		//一个停止位
	USART_InitStructure.USART_Parity 		= USART_Parity_No;		//无奇偶校验位
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制
	USART_InitStructure.USART_Mode 			= USART_Mode_Rx | USART_Mode_Tx;	//收发模式
	USART_Init(USART1, &USART_InitStructure); 						//初始化串口1
	
	USART_Cmd(USART1, ENABLE);  									//使能串口1 

}

void usart1_send_byte(uint8_t one_byte)
{

	while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)!=SET);//等待发送结束
	USART_SendData(USART1,one_byte);                      //向串口3发送数据
}
uint8_t usart1_read_byte(uint8_t* c)
{
  if ( USART_GetFlagStatus(USART1, USART_FLAG_RXNE) != RESET)
  {
    *c = USART_ReceiveData(USART1);
    return 1;
  }
  else
  {
    return 0;
  }		
}