Job_SignsPads/STM32/Code/STM32-IAP/Application/usart.c

#include "main.h"

uint8_t USART1_RX_BUF[USART1_REC_LEN]; //<2F><><EFBFBD>ջ<EFBFBD><D5BB><EFBFBD>,<2C><><EFBFBD><EFBFBD>USART_REC_LEN<45><4E><EFBFBD>ֽ<EFBFBD>.
uint32_t USART1_RX_STA = 0;			   // bit15<31><35><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɱ<EFBFBD>־,bit13~0<><30>	<09><><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>Ŀ
uint8_t USART2_RX_BUF[USART2_REC_LEN]; //<2F><><EFBFBD>ջ<EFBFBD><D5BB><EFBFBD>,<2C><><EFBFBD><EFBFBD>USART_REC_LEN<45><4E><EFBFBD>ֽ<EFBFBD>.
uint32_t USART2_RX_STA = 0;			   // bit15<31><35><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɱ<EFBFBD>־,bit13~0<><30>	<09><><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>Ŀ

//////////////////////////////////////////////////////////////////////////////////
//<2F><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>ucos,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>.
#if SYSTEM_SUPPORT_UCOS
#include "includes.h" //ucos ʹ<><CAB9>
#endif

//////////////////////////////////////////////////////////////////
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>´<EFBFBD><C2B4><EFBFBD>,֧<><D6A7>printf<74><66><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫѡ<D2AA><D1A1>use MicroLIB
#if 1
#pragma import(__use_no_semihosting)
//<2F><>׼<EFBFBD><D7BC><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>֧<EFBFBD>ֺ<EFBFBD><D6BA><EFBFBD>
struct __FILE
{
	int handle;
};

FILE __stdout;
//<2F><><EFBFBD><EFBFBD>_sys_exit()<29>Ա<EFBFBD><D4B1><EFBFBD>ʹ<EFBFBD>ð<EFBFBD><C3B0><EFBFBD><EFBFBD><EFBFBD>ģʽ
void _sys_exit(int x)
{
	x = x;
}
//<2F>ض<EFBFBD><D8B6><EFBFBD>fputc<74><63><EFBFBD><EFBFBD>
int fputc(int ch, FILE *f)
{
	USART2->DR = (u8)ch;
	while ((USART2->SR & 0X40) == 0)
		; //ѭ<><D1AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ֱ<><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	return ch;
}
#endif
void USART1_SendData(uint8_t *s, uint16_t lenth)
{
	for (uint32_t i = 0; i < lenth; i++)
	{
			UART_SendByte(USART1, (uint8_t)s[i]);
	}
	while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
}

void UART_SendByte( USART_TypeDef *USARTx, u8 SendData )
{
  USART_SendData(USARTx, SendData);
  while(USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET);
}

//<2F><>ʼ<EFBFBD><CABC>IO <20><><EFBFBD><EFBFBD>1
// bound:<3A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void uart_init(u32 bound)
{
	// GPIO<49>˿<EFBFBD><CBBF><EFBFBD><EFBFBD><EFBFBD>
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);  //ʹ<><CAB9>GPIOAʱ<41><CAB1>
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); //ʹ<><CAB9>USART1ʱ<31><CAB1>

	//<2F><><EFBFBD><EFBFBD>1<EFBFBD><31>Ӧ<EFBFBD><D3A6><EFBFBD>Ÿ<EFBFBD><C5B8><EFBFBD>ӳ<EFBFBD><D3B3>
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART1);  // GPIOA9<41><39><EFBFBD><EFBFBD>ΪUSART1
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1); // GPIOA10<31><30><EFBFBD><EFBFBD>ΪUSART1

	// USART1<54>˿<EFBFBD><CBBF><EFBFBD><EFBFBD><EFBFBD>
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10; // GPIOA9<41><39>GPIOA10
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;			//<2F><><EFBFBD>ù<EFBFBD><C3B9><EFBFBD>
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;		//<2F>ٶ<EFBFBD>50MHz
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;			//<2F><><EFBFBD>츴<EFBFBD><ECB8B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;			//<2F><><EFBFBD><EFBFBD>
	GPIO_Init(GPIOA, &GPIO_InitStructure);					//<2F><>ʼ<EFBFBD><CABC>PA9<41><39>PA10

	// USART1 <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	USART_InitStructure.USART_BaudRate = bound;										//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;						//<2F>ֳ<EFBFBD>Ϊ8λ<38><CEBB><EFBFBD>ݸ<EFBFBD>ʽ
	USART_InitStructure.USART_StopBits = USART_StopBits_1;							//һ<><D2BB>ֹͣλ
	USART_InitStructure.USART_Parity = USART_Parity_No;								//<2F><><EFBFBD><EFBFBD>żУ<C5BC><D0A3>λ
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; //<2F><>Ӳ<EFBFBD><D3B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;					//<2F>շ<EFBFBD>ģʽ
	USART_Init(USART1, &USART_InitStructure);										//<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1

	USART_Cmd(USART1, ENABLE); //ʹ<>ܴ<EFBFBD><DCB4><EFBFBD>1

	USART_ClearFlag(USART1, USART_FLAG_TC);

	USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>

	// Usart1 NVIC <20><><EFBFBD><EFBFBD>
	NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;		  //<2F><><EFBFBD><EFBFBD>1<EFBFBD>ж<EFBFBD>ͨ<EFBFBD><CDA8>
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3; //<2F><>ռ<EFBFBD><D5BC><EFBFBD>ȼ<EFBFBD>3
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;		  //<2F><><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD>3
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;			  // IRQͨ<51><CDA8>ʹ<EFBFBD><CAB9>
	NVIC_Init(&NVIC_InitStructure);							  //<2F><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>VIC<49>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD>
}

//<2F><>ʼ<EFBFBD><CABC>IO <20><><EFBFBD><EFBFBD>2
// bound:<3A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void uart_init_2(u32 bound)
{
	// GPIO<49>˿<EFBFBD><CBBF><EFBFBD><EFBFBD><EFBFBD>
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);  //ʹ<><CAB9>GPIOAʱ<41><CAB1>
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); //ʹ<><CAB9>USART2ʱ<32><CAB1>

	//<2F><><EFBFBD><EFBFBD>1<EFBFBD><31>Ӧ<EFBFBD><D3A6><EFBFBD>Ÿ<EFBFBD><C5B8><EFBFBD>ӳ<EFBFBD><D3B3>
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_USART2); // GPIOA2<41><32><EFBFBD><EFBFBD>ΪUSART2
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_USART2); // GPIOA3<41><33><EFBFBD><EFBFBD>ΪUSART2

	// USART1<54>˿<EFBFBD><CBBF><EFBFBD><EFBFBD><EFBFBD>
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3; // GPIOA9<41><39>GPIOA10
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;		   //<2F><><EFBFBD>ù<EFBFBD><C3B9><EFBFBD>
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;	   //<2F>ٶ<EFBFBD>50MHz
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;		   //<2F><><EFBFBD>츴<EFBFBD><ECB8B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;		   //<2F><><EFBFBD><EFBFBD>
	GPIO_Init(GPIOA, &GPIO_InitStructure);				   //<2F><>ʼ<EFBFBD><CABC>PA2<41><32>PA3

	// USART1 <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	USART_InitStructure.USART_BaudRate = bound;										//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;						//<2F>ֳ<EFBFBD>Ϊ8λ<38><CEBB><EFBFBD>ݸ<EFBFBD>ʽ
	USART_InitStructure.USART_StopBits = USART_StopBits_1;							//һ<><D2BB>ֹͣλ
	USART_InitStructure.USART_Parity = USART_Parity_No;								//<2F><><EFBFBD><EFBFBD>żУ<C5BC><D0A3>λ
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; //<2F><>Ӳ<EFBFBD><D3B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;					//<2F>շ<EFBFBD>ģʽ
	USART_Init(USART2, &USART_InitStructure);										//<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1

	USART_Cmd(USART2, ENABLE); //ʹ<>ܴ<EFBFBD><DCB4><EFBFBD>2

	USART_ClearFlag(USART2, USART_FLAG_TC);

	USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>

	// Usart1 NVIC <20><><EFBFBD><EFBFBD>
	NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;		  //<2F><><EFBFBD><EFBFBD>1<EFBFBD>ж<EFBFBD>ͨ<EFBFBD><CDA8>
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3; //<2F><>ռ<EFBFBD><D5BC><EFBFBD>ȼ<EFBFBD>3
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;		  //<2F><><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD>3
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;			  // IRQͨ<51><CDA8>ʹ<EFBFBD><CAB9>
	NVIC_Init(&NVIC_InitStructure);							  //<2F><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>VIC<49>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD>
}


void USART2_IRQHandler(void) //<2F><><EFBFBD><EFBFBD>2<EFBFBD>жϷ<D0B6><CFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>--<2D><><EFBFBD><EFBFBD>
{
	u8 data;
#ifdef OS_TICKS_PER_SEC //<2F><><EFBFBD><EFBFBD>ʱ<EFBFBD>ӽ<EFBFBD><D3BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,˵<><CBB5>Ҫʹ<D2AA><CAB9>ucosII<49><49>.
	OSIntEnter();
#endif
	if (USART_GetITStatus(USART2, USART_IT_RXNE) != RESET) //<2F><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>(<28><><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݱ<EFBFBD><DDB1><EFBFBD><EFBFBD><EFBFBD>0x0d 0x0a<30><61>β)
	{
		data = USART_ReceiveData(USART2);  //(USART1->DR);	//<2F><>ȡ<EFBFBD><C8A1><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		if ((USART2_RX_STA & 0x8000) == 0) //<2F><><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>
		{
			if ((data == 0x0A) || (data == 0x0D))
			{
				USART2_RX_STA |= 0x8000; //<2F><><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
				//sys_cmd_exe();			 //ͨѶ<CDA8><D1B6><EFBFBD><EFBFBD>
			}
			else
			{
				USART2_RX_BUF[USART1_RX_STA & 0x3FFF] = data;
				USART2_RX_STA++;
				if (USART2_RX_STA > (USART2_REC_LEN - 1))
				{
					USART2_RX_STA = 0; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD><DDB4><EFBFBD>,<2C><><EFBFBD>¿<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>
				}
			}
		}
	}
}