TWE_CMD_BUSY
while ((count++ < 5000) && (tr->tr_status == TWE_CMD_BUSY)){
tr->tr_status = TWE_CMD_BUSY;
if (tr->tr_status != TWE_CMD_BUSY)
tr->tr_status = TWE_CMD_BUSY;
while (tr->tr_status == TWE_CMD_BUSY)
tr->tr_status = TWE_CMD_BUSY;