Why is there a "nrf_delay_ms(200);" in the SPI Master example in SDK 16.0 ?

[TOCGRE]

Hi, I was just wondering why there is a "nrf_delay_ms(200);" in the SPI Master example in SDK 16.0.

Here is the code in the main function where it is located :

while (1)
{
// Reset rx buffer and transfer done flag
memset(m_rx_buf, 0, m_length);
spi_xfer_done = false;

APP_ERROR_CHECK(nrf_drv_spi_transfer(&spi, m_tx_buf, m_length, m_rx_buf, m_length));

while (!spi_xfer_done)
{
__WFE();
}

NRF_LOG_FLUSH();

bsp_board_led_invert(BSP_BOARD_LED_0);
nrf_delay_ms(200); //Here it is !
}

When I comment it, the code is still working. I do not know if it helps for the answer but I'm running on nrf52810.

Thanks in advance !

[awneil]

The description of the example tells you:

"The application executes SPI transactions every 200 ms and toggles the LED when the transfer is completed"

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/spi_master_example.html

[TOCGRE]

That makes sense !

Thanks