BMA421 reads all zeros

[slawkory]

Hi,

After weekend of experiments with pinetime (updates with few waspos firmwares)  .
I am experiencing issues with first chip_id read on Pinetime.
"Invalid sensor" issue as in this ticket most of the time ( sometimes counts to ~200 steps after few reboots but in general ).
Now always causes steps.py __init__ fails.

Code:

       if (dev->intf_rslt == BMA4_INTF_RET_SUCCESS)
        {
            for (indx = 0; indx < len; indx++)
            {
                /* Parsing and storing the valid data */
                data[indx] = temp_buff[indx + dev->dummy_byte];
            }
        }
        else
        {
           printf("fail of register read: 0x%x",dev->intf_rslt); <---- ffffff
           rslt = BMA4_E_COM_FAIL;
        }

Forcing battery consumption to 0 doesn't fix issue. The same making 0.05 timeout longer.

My pinetime is not devkit.
'debug' flag of dev gives logs on later steps so isn't usable.

What else can I check ? Does opening device and checking internal connections last option?