Compiler/TDC7200: TDC7200

Tool/software: TI C/C++ Compiler

Get All ways count over flow flag and read the count 0x0000.

My application use the TDC1000 as ultrasonic fronand and the TDC7200 for the TOF measure.

i set the TDC7200 registers as follow 

TDC7200_reg_local_copy[10] = {0x82, 0x68, 0x1f, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xff, 0xff };

and  TDC1000_reg_local_copy[10] = {0x4a, 0x04, 0x0a, 0x0b, 0x00, 0xe0, 0x28, 0x00, 0x02, 0x03};

The TOF between the start and the first Stop is 101.4us (measure using scop)

I am using the TDC7200 to trigger the TDC1000 by setting bit 0 at the TDC7200_CONFIG1_REG. working in mode 2 clk = 8mhz.

The TDC7200 generate the trigger as expected. then TDC1000 generate the start and after 104.us generate the first Stop.

But when reading the result i get in all counters 0x00000 result and in the fist TIME register value all other TIME register read 0x0000

when i read the status register  TDC7200_INTRPT_STATUS_REG receive value of 0x1d mean measure completed and counter over flow.

I checked problem and get it in other boards.

Please advice

Thanks,

Ofer Merom