STM32f103处理器与LM75A温度传感器的通信应用

1、STM32flO3处理器与LM75A温度传感器的通信应用IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII/FunctionName:unsignedintl2C2_LM75ARead(void)/FunctionDiscription:Readtemperaturesensorregister/FunctionParameters:/INPUT:/OUTPUT:/ReturnValue:LM75A_RegValue-temperature/unsignedintl

2、2C2_TempRead(void)unsignedintui_stateflag,ui_cnt;unsignedshortValue2;unsignedintLM75A_RegValue;LM75A_RegValue=OxFFFF;ui_cnt=TIME;EnableAcknowledgel2C_AcknowledgeConfig(l2C2/ENABLE);doui.stateflag=l2C_GetFlagStatus(l2C22C_FLAG_BUSY);while(ui_stateflag=SET)&(一ui_cnt);if(ui_statefIag=RESET)ui_stateflag

3、=ERROR;l2C_GenerateSTART(l2C2,ENABLE);等待I2C开启和总线为空ui_cnt=TIME;doui_stateflag=l2C_CheckEvent(l2C22C_EVENT_MASTER_MODE_SELECT);while(ui_stateflag=ERROR)&(-ui_cnt);讦(ui_stateflag二二SUCCESS)ui_stateflag=ERROR;l2C_Send7bitAddress(l2C2/l2C2.SLAVE_ADDRESS7J2C_Direction_Transmitter);写LM75A地址ui_cnt=TIME;doui_

4、stateflagl2C_CheckEvent(l2C22C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED);while(ui_stateflag=ERROR)&(-ui_cnt);if(ui_stateflag=SUCCESS)ui_stateflag=ERROR;l2C_SendData(l2C2,OxOO);写温度寄存器地址ui_cnt=TIME;doui_stateflag=l2C_CheckEvent(l2C22C_EVENT_MASTER_BYTE_TRANSMITTED);while(ui_stateflag=ERROR)&(-ui_cnt);if

5、(ui_stateflag=SUCCESS)ui_stateflag=ERROR;l2C_GenerateSTART(l2C2,ENABLE);开始起始条件ui_cnt二TIME;doui_stateflag=l2C_CheckEvent(l2C22C_EVENT_MASTER_MODE_SELECT);while(ui_stateflag=ERROR)&(-ui_cnt);if(ui_stateflag=SUCCESS)ui_stateflag=ERROR;l2C_Send7bitAddress(l2C22C2_SLAVE_ADDRESS72C_Direction_Receiver);ui_

6、cnt=TIME;doui_stateflag=l2C_CheckEvent(l2C22C_EVENT_MASTER_RECEIVER_MODE_SELECTED);while(ui_stateflag=ERROR)&(-ui_cnt);if(ui_stateflag=SUCCESS)ui_stateflag=ERROR;ui_cnt=TIME;doui_stateflag=l2C_CheckEvent(l2C22C_EVENT_MASTER_BYTE_RECEIVED);while(ui_stateflag=ERROR)&(-ui_cnt);iffui_statefIag=SUCCESS)ui_stateflag=ERROR;Value0=l2CReceiveData(l2C2);存储I2C2接收到的数据l2C_AcknowledgeConfig(l2C2,DISABLE);最后一位数据接收完，关闭应答l2CGenerateSTOP(l2C2,ENABLE);发送停止位ui_cnt=TIME;doui_stateflag=l2C_CheckEvent(l2C2,l2C_EVENT_MASTER_BYTE_RECEIVED);while(ui_stateflag=ERROR)&(-ui_cnt);if(ui_stateflag=SUCCESS)ui_stateflag