CC2630 I2C调试问题

user5367314

Mastermind 8355 points

基于home1.2版本的门锁例程

测试对E2PROM的读操作

初始化如下：

bspI2cInit();

引脚分配为：

/* I2C */
#define Board_I2C0_SDA0 IOID_7
#define Board_I2C0_SCL0 IOID_27

读操作如下，测量没有任何波形，是不是哪里配置不正确？

bspI2cSelect(0,0x50);//7位地址为0x50

sensorReadReg(0, &buf, 1);//读一个字节

bspI2cDeselect();

7 年多前

0 YiKai Chen 7 年多前

Guru 109510 points

API 應該是用I2C_open和I2C_transfer,你的bspI2cInit，bspI2cSelect，sensorReadReg，以及bspI2cDeselect是哪來的？

0 user5367314 7 年多前回复 YiKai Chen

Mastermind 8355 points

SensorTag里面的

void bspI2cInit(void)
{
  Semaphore_Params semParamsMutex;

  // Create protection semaphore
  Semaphore_Params_init(&semParamsMutex);
  semParamsMutex.mode = Semaphore_Mode_BINARY;
  Semaphore_construct(&mutex, 1, &semParamsMutex);

  // Reset the I2C controller
  HapiResetPeripheral(PRCM_PERIPH_I2C0);

  I2C_init();
  I2C_Params_init(&i2cParams);
  i2cParams.bitRate = I2C_100kHz;
  i2cHandle = I2C_open(Board_I2C, &i2cParams);

  // Initialise local variables
  slaveAddr = 0xFF;
  interface = BSP_I2C_INTERFACE_0;

  if (i2cHandle == NULL)
  {
    Task_exit();
  }
}

bool bspI2cWriteRead(uint8_t *wdata, uint8_t wlen, uint8_t *rdata, uint8_t rlen)
{
I2C_Transaction masterTransaction;

masterTransaction.writeCount = wlen;
masterTransaction.writeBuf = wdata;
masterTransaction.readCount = rlen;
masterTransaction.readBuf = rdata;
masterTransaction.slaveAddress = slaveAddr;

return I2C_transfer(i2cHandle, &masterTransaction) == TRUE;
}

如果用你说的I2C_open和I2C_transfer，参数怎么写？

0 YiKai Chen 7 年多前回复 user5367314

Guru 109510 points

你的bspI2cInit和bspI2cWriteRead就有用到I2C_open和I2C_transfer,你應該先檢查看看I2C_open後的i2cHandle是不是NULL

0 Viki Shi 7 年多前

TI__Guru**** 188340 points

有个I2C控制TMP007的例程，可以参考下： dev.ti.com/.../

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CC2630 I2C调试问题