RE: How to use SPI and BLE at the same time?

noob_with_ucontrollers — Sun, 24 Mar 2019 23:24:42 GMT

I set my spi_config.orc = 0x55; but that did not change the "0xFFF..." output I am seeing, so I am guessing this isn't an overflow problem

RE: How to use SPI and BLE at the same time?

noob_with_ucontrollers — Sun, 24 Mar 2019 22:00:28 GMT

Pin 9,10 are usually NFCT by default. So I added this to preprocessor definitions

along with editing the UICR_config file according to instructions I read on other devzone posts for pin 9 configuration. I did this so I can use 9,10 for my SPI.

This is how I initialize the SPI and its pins. I tried configuring MISO after the SPI initialization as a PULLDOWN input but that did not fix the issue.

 nrf_drv_spi_config_t spi_config = NRF_DRV_SPI_DEFAULT_CONFIG;
    spi_config.ss_pin   = SPI_SS_PIN;    // Set to UNUSED 
    spi_config.miso_pin = SPI_MISO_PIN;
    spi_config.mosi_pin = SPI_MOSI_PIN;
    spi_config.sck_pin  = SPI_SCK_PIN;
		spi_config.frequency = NRF_DRV_SPI_FREQ_1M; 
		spi_config.mode      = NRF_DRV_SPI_MODE_1;
    APP_ERROR_CHECK(nrf_drv_spi_init(&spi, &spi_config, spi_event_handler, NULL));

    

	init_pins(); 
//	nrf_gpio_cfg_output (SPI_MOSI_PIN);
//	nrf_gpio_cfg_input (SPI_MISO_PIN, NRF_GPIO_PIN_NOPULL ); 
	nrf_gpio_cfg_input (SPI_MISO_PIN, NRF_GPIO_PIN_PULLDOWN );

My RTT log shows proper data once when I first open it, like an array of '1E007F' which seems like normal ADC data, but then it would go back to printing out 'FF...FFFFFF01'

RE: How to use SPI and BLE at the same time?

Turbo J — Sat, 23 Mar 2019 23:56:58 GMT

[quote userid="75171" url="~/f/nordic-q-a/45292/how-to-use-spi-and-ble-at-the-same-time"]and configure pins 9,10 as GPIO[/quote]

That means nothing to me. Input? Output? MISO must be configured as an input for SPI to work properly.