应将i2c发送完地址收不到数据

只看该作者 · 2015-7-28 11:14

state_tmp102 tmp102_tmpConversion()
{
while(I2C_GetFlagStatus(I2C1,I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C1,ENABLE);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1,0x90,I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C1,0x01);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTING));
I2C_SendData(I2C1,0xe0);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTING));
I2C_SendData(I2C1,0xa0);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTOP(I2C1,ENABLE);
return SUCCESS_TMP102;
}

state_tmp102 tmp102_read(unsigned int *byte)
{
unsigned int byte1 = 0,byte2 = 0;
if(tmp102_tmpConversion() == ERROR_TMP102)
{
      return ERROR_TMP102;
}
while(I2C_GetFlagStatus(I2C1,I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C1,ENABLE);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1,0x90,I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C1,0x00);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTOP(I2C1,ENABLE);

while(I2C_GetFlagStatus(I2C1,I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C1,ENABLE);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1,0x91,I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));

while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_RECEIVED));  ////////////////等待收到数据
byte1 = (unsigned char)I2C_ReceiveData(I2C1);
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_RECEIVED));
byte2 = (unsigned char)I2C_ReceiveData(I2C1);
I2C_AcknowledgeConfig(I2C1,DISABLE);
I2C_GenerateSTOP(I2C1,ENABLE);
*byte = (byte1 << 8) | byte2;
*byte = *byte >>4;
return SUCCESS_TMP102;
}

程序卡在 ///////等待接收数据哪里是上一步没把寄存器清理干净吗？

只看该作者 · 2015-7-28 11:18

真心服了用寄存器就行用库函数就不行这是玩我呢

只看该作者 · 2015-7-28 11:21

自己解决了原来是光复制上面的内容了忘了改接收地址
I2C_Send7bitAddress(I2C1,0x91,I2C_Direction_Receiver);