本帖最后由 一只耳朵怪 于 2018-6-6 16:37 编辑
大家好，
我现在正在试图使用CC1310的硬件I2C去驱动一个地磁传感器。目前使用的是CC1310的SDK中提供的
ti-DRIVERS api。为了满足传感器自身的时序需求，我基于
I2Cdrivers的API自己编写了几个上层的传输函数。但结果显示我的每一次传输指令都没有成功。通过调试后我发现I2C_transfer()函数最后返回的状态都是
ERROR_STATE，我在自定义的传输函数之中每一次调用都进行了初始化I2C、关闭I2C，例化一个I2C句柄等操作，不知道这样可不可行。或者说是我调用API的
顺序有问题？
总之，烦请各位花一点时间看一下我的代码，进行一些指点，看函数看代码确实都非常的累，我也不愿意耽误大家太宝贵的时间，于是将代码简化如下请大家看看！
真心的感谢大家！
祝好！
Alan Xie
void *mainThread(void *arg0) [ uint8_t CheckInitiateState; /* Call driver init functions */ // .....省略..... /*=============================== Initiate MAG3110 e============================= */ MAG3110_Init();//传感器驱动 CheckInitiateState=I2C_Read(MAG3110_IIC_ADDRESS,WHO_AM_I_REG,1);//检查传输值 if ( CheckInitiateState == MAG3110Q_ID) [ Display_printf(display, 0, 0, "ID:MAG3110Q,OK!n "); ] else // failed to initiate MAG3110 [ Display_printf(display, 0, 0, "ID not identified,FAILED!n"); ] ] //.....省略.... /**************************传感器驱动函数********************/ void MAG3110_Init (void) [ MAG3110_Standby(); txBuffer[0] = CTRL_REG1; txBuffer[1] = DATA_RATE_5MS; I2C_WriteOneByte(MAG3110_IIC_ADDRESS, txBuffer); MAG3110_Active(); ] void MAG3110_Active (void) [ I2C_Read(MAG3110_IIC_ADDRESS,CTRL_REG1,1); txBuffer[0] = CTRL_REG1; txBuffer[1] = (rxBuffer[0]&0xFC|ACTIVE_MASK); I2C_WriteOneByte(MAG3110_IIC_ADDRESS,txBuffer); ] void MAG3110_Standby (void) [ I2C_Read(MAG3110_IIC_ADDRESS,CTRL_REG1,1); txBuffer[0] = CTRL_REG1; txBuffer[1] = (rxBuffer[0]&0xFC|STANDBY_MASK); I2C_WriteOneByte(MAG3110_IIC_ADDRESS,txBuffer); ] //.....省略.... /******************自定义I2C传输函数**********/ /*=========================================== 自定义I2C读 ===================================================*/ uint8_t I2C_Read(uint8_t I2C_Addr, uint8_t REG_Addr, uint16_t num) [ I2C_init(); int ret; I2C_Handle i2c; I2C_Params i2cParams; I2C_Params_init(&i2cParams); i2cParams.bitRate = I2C_400kHz; i2cParams.transferMode = I2C_MODE_BLOCKING; i2c = I2C_open(Board_I2C0, &i2cParams); if (i2c == NULL) [ Display_printf(display, 0, 0, "Error Initializing I2Cn"); while (1); ] else [ Display_printf(display, 0, 0, "I2C Initialized!n"); ] txBuffer[0] = REG_Addr; I2C_Transaction i2cTransaction; i2cTransaction.slaveAddress = I2C_Addr; i2cTransaction.writeBuf = txBuffer; i2cTransaction.writeCount = 1; i2cTransaction.readBuf = rxBuffer; i2cTransaction.readCount = num; ret = I2CCC26XX_transfer(i2c, &i2cTransaction); if (!ret) Display_printf(display, 0, 0, "Unsuccessful I2C read"); else Display_printf(display, 0, 0, "Successful I2C read"); I2C_close(i2c); return *rxBuffer; ]/************************************* 自定义I2C写 *********************/ uint8_t I2C_WriteOneByte(uint8_t I2C_Addr, uint8_t *valuebuffer) [ I2C_init(); int ret; I2C_Handle i2c; I2C_Params i2cParams; I2C_Params_init(&i2cParams); i2cParams.bitRate = I2C_400kHz; i2cParams.transferMode = I2C_MODE_BLOCKING; i2c = I2C_open(Board_I2C0, &i2cParams); if (i2c == NULL) [ Display_printf(display, 0, 0, "Error Initializing I2Cn"); while (1); ] else [ Display_printf(display, 0, 0, "I2C Initialized!n"); ] I2C_Transaction i2cTransaction; i2cTransaction.slaveAddress = I2C_Addr; i2cTransaction.writeBuf = valuebuffer; i2cTransaction.writeCount = 2;//1 or 2? TODO: Needs to be figured out. i2cTransaction.readBuf = NULL; i2cTransaction.readCount = 0; ret=I2CCC26XX_transfer(i2c, &i2cTransaction); if (!ret) [ Display_printf(display, 0, 0, "Unsuccessful I2C write"); ] else Display_printf(display, 0, 0, "Successful I2C write"); I2C_close(i2c); return 0; ]
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