If delay is inserted after data transmission by SPI, it transits to default_handler

[Kaito]

Hi!

I am planning to port SPI sending and receiving functions to the sample code of ble_app_uart of SDK 14.0.0.

The transplant was finish, but when I am debugging,if I add a delay after sending data with SPI while debugging, it will transition to Default_handler.

The code running SPI and UART worked fine without problems.

Is it impossible to put a delay in ble's sample code?

best regards!!

void SPITxCommand(unsigned char Data)
{
nrf_gpio_pin_clear(22); //CS pin low
nrf_drv_spi_transfer(&spi, &Data, 1, NULL, NULL);
//nrf_delay_us(50);
nrf_delay_us(100); //error component
}

 

[Jørgen Holmefjord]

In general there should not be any issue with using delays in the application. Do you get any warnings when compiling? Is the issue only present when debugging the application, or always when the delay function is used?

[Jørgen Holmefjord]

Can you post higher resolution screenshot? Are you using BLE in your application?

[Kaito]

Hi!

While doing debugging, I found that the next instruction using the nrf_drv_spi_transfer function transitions to default handler.

Does that mean that ble's sample code has missing files such as SPI C files and libraries?

 best regards!

[Jørgen Holmefjord]

There is an error in your sdk_config.h file. You have set SPI0_ENABLED to 0 and SPI1_ENABLED to 1, but in your code you use SPI0 when declaring the SPI instance (NRF_DRV_SPI_INSTANCE(0)). The SPI0 IRQ handler is not compiled in and will default to the Default_Handler.

[Kaito]

thank you for your reply!

I fixed the problem you pointed out and I was able to transmit!!!

really thank you!!!!!!!

I have something I do not know other point yet, so I will post a question.

best regards and reallyyyy thank you!!!!!

[awneil]

Kaito said:

I fixed the problem you pointed out and I was able to transmit

Excellent.

So please verify the answer:

[Kaito]

Hi!

I have also saved your opinion!

really thank you!!!