Hello Randy,
Well it looks like you may have a valid complaint. In BLE v1.3, the HalI2CSend() function is missing from the hal_i2c.c file!
It is in the BLE v1.2 along with other functions. Somehow for some reason it was not included in BLE v1.3. I haven't downloaded BLE v1.3.1 to see if it was included in that one.
As I mentioned in the previous post, the SensorTag uses the i2c exclusively for the all the on-board sensors.
The HalSensorReadReg(uint8 addr, uint8 *pBuf, uint8 nBytes) performs the same function as the HalI2CSend(uint8 address, uint8 *buf, uint16 len).
Looking further into the code, you should be able to figure out that one is a hardware version and the other is a software version. This could only mean that the BLE v1.2 was written for the CC2540, before the CC2541 was released.
Thanks,
