nrf52832 , SPI interface with LIS3DH

RE: nrf52832 , SPI interface with LIS3DH

Karl Ylvisaker — Mon, 22 Jun 2020 11:27:03 GMT

Hello,

[quote user="Nagashree"]And i have used SES in debug mode.[/quote]

Great! Could you confirm for me that the "DEBUG" is included in the "Preprocessor definitions"?
It is not enough to just select "debug" instead of "release" configuration.
If DEBUG is defined in SES then you should be able to see where an error was generated.

[quote user="Nagashree"]The Nrfx_spim example is for PCA10056 only and not PCA10040.[/quote]

You have nRF52832 in the title of your ticket, and you have tagged the ticket with nRF52 DK.
Do I understand you correctly that you have now changed your development kit to an nRF52840 DK?

[quote user="Nagashree"]Even if i implement on this, as soon as i goto debug mode, it shows system handler error.[/quote]

Can you tell me more about this behavior? What error is generated, and where is it generated?
If you have SES in debug mode then it should be visible as soon as the error handler is called.

Best regards,
Karl

RE: nrf52832 , SPI interface with LIS3DH

Nats — Mon, 22 Jun 2020 10:12:00 GMT

Dear Karl,

There is no indication on the Sensor module. And i have used SES in debug mode.

The Nrfx_spim example is for PCA10056 only and not PCA10040. Even if i implement on this, as soon as i goto debug mode, it shows system handler error.

RE: nrf52832 , SPI interface with LIS3DH

Karl Ylvisaker — Mon, 22 Jun 2020 09:12:00 GMT

Hello,

[quote user="Nagashree"]Thank you, the greyed out area problem is resolved.[/quote]

I am happy to hear that issue is resolved.

Could you configure DEBUG is SES, so that you may see any errors that are called?
I suspect that the 0 you are seeing being returned is in fact the NRF_SUCCESS, indicating your call to spi_transfer was successful.

Furthermore, what are you seeing on your sensor side of things - does the sensor indicate in any way that communication is happening ( such as a LED blinking ) ?
What is the output of your logs when your code is running?
I would recommend that you base your project upon the nrfx_spim example, rather than the spi_master example, since it makes use of the newest nrfx drivers rather than the legacy nrf_drv driver.

Best regards,
Karl

RE: nrf52832 , SPI interface with LIS3DH

Nats — Fri, 19 Jun 2020 12:29:00 GMT

Thank you, the greyed out area problem is resolved. But the spi_event handler doesnt execute.

Debugging flow

1. nrf_drv_spi_transfer function call

2. from nrf_drv_spi_transfer , nrfx_spi_xfer is called from

3. from nrfx_spi_xfer, the spi_xfer is called

4 nrf_spi_int_enable is called from the spi_xfer

And they start reverting the function values back,(backtrack the above path.) and finally return 0.

RE: nrf52832 , SPI interface with LIS3DH

Karl Ylvisaker — Wed, 17 Jun 2020 07:57:09 GMT

Hello,

The fact that your nrfx_spi defines are grayed out indicated that they are not defined, and thus not visible to the preprocessor.
Most likely, this is caused by having unused defines in your sdk_config file - I recommend that you do not set *_ENABLED to 0 in the SDK config, because this will still leave them as defined, even though they are set to 0.
For more information about this, please see this and this ticket. In essence, leaving the *_ENABLED defined to 0 will still make the apply_old override the nrfx driver.

So, could you try to comment out or remove the legacy spi *_ENABLED 0 defines from your sdk_config, and see if this resolves your issue?

Best regards,
Karl