RE: How to make 51822 into test mode

John — Thu, 10 Jul 2014 14:05:07 GMT

I may be wrong, but I don't believe there is a command to tell the soft device to cease operation and enter DTM mode. We accomplished this by checking the state of a pin at power up and if it was pulled low we invoke the DTM rather than booting into normal mode and starting the soft device. It looks like:

		// DTM detection pin is pulled up in HW, a low pin means DTM mode should be entered.
	nrf_gpio_cfg_input(DTM_DETECT_PIN_NUMBER, NRF_GPIO_PIN_NOPULL);

	__NOP();
	__NOP();
	__NOP();

	pin_state = nrf_gpio_pin_read(DTM_DETECT_PIN_NUMBER);

	if (pin_state == 0)			// Do not do normal initialization, go into radio test mode.
	{
		#if defined (USE_DTM)
			dtm_main_loop();
		#endif
		
		#if defined (USE_RADIO_TEST)
			radio_test_main();
		#endif
	}
	else
	{
               // Boot normally and start soft device