ISSUE : TWI device detected at address

[Yuvaraj V]

Hi Everyone,

In this code I'm face a problem. The issue is when i debug, it shows "<info> app: TWI device detected at address 0x6D".  Please find attached a snapshot of the issue.

 Need your help ASAP. Thanks

Regards,

Yuvaraj

[Marjeris Romero]

Hi Yuvaraj,

How many TWI devices are you connecting to? And what kind?

Best Regards,

Marjeris

[Yuvaraj V]

Hi Marjeris,

One LIS3DH device only...

.

Regards,

Yuvaraj

[Yuvaraj V]

Hi Marjeris,

I did the twi scanner test and it indicates no device found. so what is the issue. Please find attached a snapshot.

Regards,

Yuvaraj

[Marjeris Romero]

Hi Yuvaraj,

Could you describe how the LIS3DH sensor is connected to the nRF52832 DK? Which pins, etc.

Best Regards,

Marjeris

[awneil]

Marjeris Romero said:

Could you describe how the LIS3DH sensor is connected to the nRF52832 DK? Which pins, etc.

+1

Yuvaraj V the clearest way to do that is to post a schematic - not try to describe it in words.

[Yuvaraj V]

Hi Marjeris,

I connect Like this...

Regards,

Yuvaraj

[Marjeris Romero]

Hi Yuvaraj,

This is a picture of how you program the chip on a custom board. It doesn't show how the LIS3DH sensor is connected to the board. Can you provide a picture of how the LIS3DH is connected to your nRF52832 DK?

Best Regards,

Marjeris

[Yuvaraj V]

Hi Marjeris,

My custom board contains a LIS3DH sensor. This is the schematics of my custom board...

Regards,

Yuvaraj

[Marjeris Romero]

Hi Yuvaraj,

Sorry for the late reply. The schematics seem fine so I am not sure what the issue could be here. Are you using NRF_DRV_TWI_FREQ_100K as the default TWI clock frequency?

BB,

Marjeris

[Yuvaraj V]

Hi Marjeris,

Yes, the same TWI clock frequency in my code. 

Regards,

Yuvaraj

[Marjeris Romero]

Hi Yuvaraj,

Have you check the sensor's power supply?

Best Regards,

Marjeris

[Yuvaraj V]

Hi Marjeris,

I take a one transmission(tx) example program and the output of SCL and SDA signals are seen in MSO. Is this enough for sensor as powered. or otherwise what i want to do. I'm ready to do.

Regards,

Yuvaraj