【STM32F030开发日志/评测/笔记】+（2）STM32F0处理器I2C实例（...

alisa123 · 发表于 2016-3-14 16:26:22

lkl0305 发表于 2016-3-14 15:58
我现在基本用HAL库，用起来放便些，我这两天给你看看，你没有逻辑分析仪之类的么，调试一下看看哪里有问题 ...

有逻辑分析仪的，就没怎么用过分析仪，我的这个只能进一次发送中断，然后就进不去了
我把我配置的程序发出来
void I2C_Configuration(void)
{
GPIO_InitTypeDef  GPIO_InitStruct;
I2C_InitTypeDef  I2C_InitStruct;
NVIC_InitTypeDef  NVIC_InitStructure;

/* Configure the I2C clock source. The clock is derived from the HSI */
RCC_I2CCLKConfig(RCC_I2C1CLK_SYSCLK);
/*Enable GPIOB and I2c1 clock*/
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1 , ENABLE);

/* Connect PXx to I2C_SCL*/
GPIO_PinAFConfig(GPIOB,GPIO_PinSource6,GPIO_AF_1);
/* Connect PXx to I2C_SDA*/
GPIO_PinAFConfig(GPIOB,GPIO_PinSource7,GPIO_AF_1);

/*GPIO Configuration*/
/*Configure I2C1 pins: SCL */
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_OType = GPIO_OType_OD;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOB,&GPIO_InitStruct);

/*Configure sEE_I2C pins: SDA */
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_7;
GPIO_Init(GPIOB , &GPIO_InitStruct);

/* Enable the USART1 gloabal Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = I2C1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

/*I2C configuration*/
I2C_InitStruct.I2C_Mode = I2C_Mode_I2C;
I2C_InitStruct.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
I2C_InitStruct.I2C_DigitalFilter = 0x00;
I2C_InitStruct.I2C_OwnAddress1 =0x00;
I2C_InitStruct.I2C_Ack = I2C_Ack_Enable;
I2C_InitStruct.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStruct.I2C_Timing = 0x00210507;
I2C_Init(I2C1, &I2C_InitStruct);

I2C_ITConfig(I2C1,I2C_IT_RXI | I2C_IT_TXI | I2C_IT_TCI | I2C_IT_STOPI,ENABLE);
// I2C1->CR1|=0x7F<<1; //¿ªÆôÖÐ¶Ï
I2C_Cmd(I2C1, ENABLE);
}
中断程序如下：
void sI2CInterrupt(void)
{
INT32U I2CFlagStatus = 0x00000000;
I2CFlagStatus = (uint32_t)(I2C1->ISR & (uint16_t)0x0000000F6);

if(I2C_GetITStatus(I2C1,I2C_ISR_TXIS) != RESET)
{
I2C_SendData(I2C1, Data2);
}
else if(I2C_GetITStatus(I2C1,I2C_IT_RXNE) != RESET) //Êý¾Ý½ÓÊÕÖÐ¶Ï
{
Data1 = I2C_ReceiveData(I2C1);
// I2C_ClearITPendingBit(I2C1, I2C_IT_RXNE);
}
else if(I2C_GetITStatus(I2C1,I2C_IT_STOPF) != RESET)
{
I2C_ClearITPendingBit(I2C1,I2C_IT_STOPF);
}
if(I2C_GetFlagStatus(I2C1, I2C_FLAG_STOPF) == SET)
{
I2C_ClearFlag(I2C1, I2C_ICR_STOPCF);
}
}