Error after transmit complete event in SPI + SoftDevice enabled

RE: Error after transmit complete event in SPI + SoftDevice enabled

danimalia — Mon, 05 Feb 2018 04:19:05 GMT

SPI interrupt is set to APP_IRQ_PRIORITY_LOW, and so is the RTC:

#define RTC1_IRQ_PRI APP_IRQ_PRIORITY_LOW

#define SWI0_IRQ_PRI APP_IRQ_PRIORITY_LOW

How to use the scheduler to call from the main loop?

RE: Error after transmit complete event in SPI + SoftDevice enabled

Hein — Mon, 05 Feb 2018 03:05:29 GMT

This sounds like an interrupt priority issue, make sure that the SPI interrupt priority is at least the same as the timer priority, or alternatively, call the SPI transfer from the main loop instead of interrupt. (Can be done with the scheduler)

RE: Error after transmit complete event in SPI + SoftDevice enabled

danimalia — Sun, 04 Feb 2018 22:17:37 GMT

Sorry to resurrect an old thread but I have run into the same problem, and have followed the code suggested above.

the problem for me is that I am not sure where to call send_data().

I am wanting to read data from an accelerometer periodically, and have tried to call send_data in rsc_meas_timeout_handler().

however, when I do this the spi_master_event_handler() never gets called, so I think something is either blocking the interrupt somewhere or it has been disabled but I can't find where...

RE: Error after transmit complete event in SPI + SoftDevice enabled

Annim — Thu, 18 Dec 2014 06:55:33 GMT

what problem? do let us know with error code or so if you can.

RE: Error after transmit complete event in SPI + SoftDevice enabled

mira67 — Wed, 17 Dec 2014 23:50:37 GMT

can you provide what's your error in the code? I am having similar problem with you?

RE: Error after transmit complete event in SPI + SoftDevice enabled

leo b. — Wed, 03 Dec 2014 14:31:28 GMT

Thank you so much. I was able to find the cause of my problem by referencing your sample code.

RE: Error after transmit complete event in SPI + SoftDevice enabled

Annim — Tue, 02 Dec 2014 09:28:04 GMT

Try this code out.

Make sure you call SPI init procedures after ble_stack_init() call. Take the code piece by piece, this code works for me.

Take a look on this link for simple source code:

PasteBin S110+SPI

RE: Error after transmit complete event in SPI + SoftDevice enabled

Annim — Tue, 02 Dec 2014 09:15:48 GMT

While working with SPI and SoftDevice Enabled. Do make Sure that you have initiated SPI related steps after ble_stack_init(). Then it will not stuck. Will post one clean sample for SPI + S110 in a while.