Hi,

Your question is related to the EFR32 peripherals and not the Bluetooth stack so it was moved to the 32-bit MCU forum.

Regards,
Tiago

Thank you for you all,

I have found the problem, there is a mistaks in the PCB customisation.

regards,

Abba 

Hi,

I am sorry for reopening this thread, but i am wrong about in my last comment, my custom PCB is ok.

Please find under the code steps (this code is working well dev kit)

void i2c_transfer(uint16_t device_addr, uint8_t cmd_array[], uint8_t data_array[], uint16_t cmd_len, uint16_t data_len, uint8_t flag)
{
      // Transfer structure
      I2C_TransferSeq_TypeDef i2cTransfer;

      // Initialize I2C transfer
      I2C_TransferReturn_TypeDef result;
      i2cTransfer.addr          = device_addr;
      i2cTransfer.flags         = flag;
      i2cTransfer.buf[0].data   = cmd_array;
      i2cTransfer.buf[0].len    = cmd_len;

      // Note that WRITE_WRITE this is tx2 data
      i2cTransfer.buf[1].data   = data_array;
      i2cTransfer.buf[1].len    = data_len;

      // Set up the transfer
      result = I2C_TransferInit(I2C0, &i2cTransfer);
      printLog("I2C_TransferInit result = %d \n\r", result);

      // Do it until the transfer is done
      while (result != i2cTransferDone)
      {
            if (result != i2cTransferInProgress)
            {

            }
            result = I2C_Transfer(I2C0);
            printLog(" result = %d \n\r", result);

      }
   //   printLog("transfert done\r\n");
   //   BSP_LedSet(0);
}

Then i have in my log:

after I2C_TransferInit result = 1 
 result = 1 
 result = -1 
 result = -5 
 result = -5 
 result = -5 
....

infinite loop.

Have you any idea ?

regards,

Abba