TWI_Scanner example on PCA10040 not Working

RE: TWI_Scanner example on PCA10040 not Working

Ameer Usman — Thu, 21 Nov 2019 10:11:18 GMT

Found the problem and was on my end. Actually another device was connected on the same pins of I2C that was not using I2C communication (I guess it was using SPI). Removing that device fixed the problem.

RE: TWI_Scanner example on PCA10040 not Working

Ameer Usman — Thu, 21 Nov 2019 08:08:59 GMT

No errors found in debugging.

RE: TWI_Scanner example on PCA10040 not Working

Ali Rumane — Thu, 21 Nov 2019 07:47:42 GMT

Hi,

It is a bool function and shouldn't stop there. Can you watch the video from third link and debug if you come across errors or something?

RE: TWI_Scanner example on PCA10040 not Working

Ameer Usman — Thu, 21 Nov 2019 06:50:31 GMT

I am using nRF52832 DK at the moment with SDK 15.3. If I pause the program it shows being here:

__STATIC_INLINE bool nrf_twim_event_check(NRF_TWIM_Type * p_reg,
                                          nrf_twim_event_t event)
{
    return (bool)*(volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event);
}

RE: TWI_Scanner example on PCA10040 not Working

Ali Rumane — Thu, 21 Nov 2019 06:38:42 GMT

Hi,

Can you add DEBUG in Preprocessor Symbol Defines, set Optimization Level to 1 and try to debug which function is causing error?

You can look at the following links to debug your code:

Link

Basics of Debugging - Segger Embedded Studio

Are your TWI pins connected and configured correctly? Are you using DK or custom board? Which SDK are you using?