下面是我主发送和主接收的程序，都是根据传输时序图来编写的，觉得应该没问题吧？
从接收和从发送的我不想用DMA方式，有人能提供一个吗？
void I2C1_ReceiveBytes(u8* pBuffer, u16 Module_ADDRESS, u8 Num)
{
I2C_GenerateSTART(I2C1, ENABLE); // Send STRAT condition
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT)); // Test on EV5 and clear it
I2C_Send7bitAddress(I2C1, Module_ADDRESS, I2C_Direction_Receiver); // Send Module_address for read
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED)); // Test on EV6 and clear it
while(Num) // Receive data
{
if(Num == 1)
{
I2C_AcknowledgeConfig(I2C1, DISABLE); // Disable Acknowledgement
I2C_GenerateSTOP(I2C1, ENABLE); // Send STOP Condition
}
if(I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED)) // Test on EV7 and clear it
{
// Read bytes from the module
*pBuffer = I2C_ReceiveData(I2C1);
pBuffer++ ;
Num-- ;
}
}
I2C_AcknowledgeConfig(I2C1, ENABLE); // Enable Acknowledgement to be ready for another reception
} |
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