Compile errors 

BLE_TPMS:94:16: error: variable 'plByte' set but not used [-Werror=unused-but-set-variable]
           byte plByte[16];
                ^~~~~~
BLE_TPMS:85:11: error: unused variable 'payloadhex' [-Werror=unused-variable]
     char *payloadhex = utils.buildHexData(nullptr, payload, payloadlen);
           ^~~~~~~~~~