#include?“usart3.h“
u8?Usart3_Receive;

/**************************************************************************
函數(shù)功能：串口3初始化
入口參數(shù)：pclk2:PCLK2?時(shí)鐘頻率（Mhz）????bound:波特率
返回??值：無
**************************************************************************/
void?uart3_init（u32?pclk2u32?bound）
{??	?
	float?temp;
	u16?mantissa;
	u16?fraction;	???
	temp=（float）（pclk2*1000000）/（bound*16）;//得到USARTDIV
	mantissa=temp;				?//得到整數(shù)部分
	fraction=（temp-mantissa）*16;?//得到小數(shù)部分	?
??mantissa<<=4;
	mantissa+=fraction;?
	RCC->APB2ENR|=1<<3;???//使能PORTB口時(shí)鐘??
	RCC->APB1ENR|=1<<18;??//使能串口時(shí)鐘?
	GPIOB->CRH&=0XFFFF00FF;?
	GPIOB->CRH|=0X00008B00;//IO狀態(tài)設(shè)置
	GPIOB->ODR|=1<<10;	??
	RCC->APB1RSTR|=1<<18;???//復(fù)位串口1
	RCC->APB1RSTR&=~（1<<18）;//停止復(fù)位	???	???
	//波特率設(shè)置
?	USART3->BRR=mantissa;?//?波特率設(shè)置	?
	USART3->CR1|=0X200C;??//1位停止無校驗(yàn)位.
	//使能接收中斷
	USART3->CR1|=1<<8;????//PE中斷使能
	USART3->CR1|=1<<5;????//接收緩沖區(qū)非空中斷使能	????	
	MY_NVIC_Init（21USART3_IRQn2）;//組2，最低優(yōu)先級(jí)?
}

/**************************************************************************
函數(shù)功能：串口3接收中斷
入口參數(shù)：無
返回??值：無
**************************************************************************/
void?USART3_IRQHandler（void）
{	
	if（USART3->SR&（1<<5））//接收到數(shù)據(jù)
	{	??
	?	int?uart_receive;//藍(lán)牙接收相關(guān)變量
	?uart_receive=USART3->DR;?

		
	
	}??											?
}?

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????1475??2017-02-20?22:53??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\HARDWARE\USART3\usart3.c

?????文件????????172??2015-11-03?09:51??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\HARDWARE\USART3\usart3.h

?????文件?????307951??2015-12-07?15:51??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\24l01.crf

?????文件???????1665??2015-12-07?15:51??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\24l01.d

?????文件?????314324??2015-12-07?15:51??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\24l01.o

?????文件?????293183??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\adc.crf

?????文件???????1359??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\adc.d

?????文件?????295548??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\adc.o

?????文件?????297709??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\control.crf

?????文件???????1543??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\control.d

?????文件?????309140??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\control.o

?????文件????????817??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\datascope_dp.crf

?????文件????????128??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\datascope_dp.d

?????文件??????10536??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\datascope_dp.o

?????文件?????242170??2016-12-18?15:08??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\delay.crf

?????文件????????725??2016-12-18?15:08??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\delay.d

?????文件?????249228??2016-12-18?15:08??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\delay.o

?????文件?????293683??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\encoder.crf

?????文件???????1499??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\encoder.d

?????文件?????296008??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\encoder.o

?????文件?????????19??2015-11-15?15:32??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\ExtDll.iex

?????文件?????292424??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\exti.crf

?????文件???????1394??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\exti.d

?????文件?????294400??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\exti.o

?????文件???????1122??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\filter.crf

?????文件?????????90??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\filter.d

?????文件??????11952??2016-12-18?14:55??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\filter.o

?????文件?????235777??2015-07-06?09:58??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\iic.crf

?????文件????????535??2015-07-06?09:58??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\iic.d

?????文件?????251684??2015-07-06?09:58??MiniBalanceV5?STM32F103C8T6測(cè)試代碼\OBJ\iic.o

............此處省略94個(gè)文件信息