Hi,
I have integrated atmega328 with tdc1000 and I am able to read a water level of 200cms. But I need to extend this range to around 400cms. I noticed in the datasheet that there are two CLOCKDIV options, for reading water level of 200cm, I had fixed CLOCKDIV_IN to 1. Below are the configurations I had set
AUTOZERO_PERIOD - T0x64
ECHO_TIMEOUT - T0x1024
TIMING_REG - 1024
As per calculations for 1MHz frequency, The echo receiving window should be (3972 + 512) - 4484uS
I have connected the ERRB pin as input to the controller to check the timeout time when the sensor is not connected the timeout time I had obtained is around 4500uS which is almost close to the calculated value. To read 400cm of water, I changed the CLOCKDIV to 2.
But the timeout time I am getting is around 5090 uS. but as per calculations, it should come around 8968uS. Kindly help me with this issue.
Regards,
Shankar
