ISSUE : TWI device detected at address

RE: ISSUE : TWI device detected at address

Jørgen Holmefjord — Wed, 08 May 2019 09:05:29 GMT

You should be able to run the twi_scanner example on your custom board by changing the TWI pins. If you do not have UART on your board, you can view the log output on RTT by enabling RTT backend for NRF_LOG module by setting this in sdk_config.h file:

#ifndef NRF_LOG_BACKEND_RTT_ENABLED
#define NRF_LOG_BACKEND_RTT_ENABLED 1
#endif

#ifndef NRF_LOG_BACKEND_UART_ENABLED
#define NRF_LOG_BACKEND_UART_ENABLED 0
#endif

RE: ISSUE : TWI device detected at address

Yuvaraj V — Wed, 01 May 2019 10:56:09 GMT

Hi Jorgen,

I think "No device was found" this messege is from my DK not my custom board.

How to conform this messege is from my custom board?

How to print log info from my custom board?

My custom board is in final product stage, complete pcb, so how i check my sensor?

Regards,

Yuvaraj

RE: ISSUE : TWI device detected at address

Jørgen Holmefjord — Tue, 30 Apr 2019 12:44:54 GMT

If you get "No device was found" from the twi_scanner example, the sensor is not responding to (acking) the address. Do you have another sensor that you can connect and test with?

RE: ISSUE : TWI device detected at address

Yuvaraj V — Tue, 16 Apr 2019 05:02:28 GMT

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

RE: ISSUE : TWI device detected at address

Marjeris Romero — Fri, 12 Apr 2019 14:14:26 GMT

Hi Yuvaraj,

Have you check the sensor's power supply?

Best Regards,

Marjeris

RE: ISSUE : TWI device detected at address

Yuvaraj V — Tue, 09 Apr 2019 04:16:45 GMT

Hi Marjeris,

Yes, the same TWI clock frequency in my code.

Regards,

Yuvaraj

RE: ISSUE : TWI device detected at address

Marjeris Romero — Mon, 08 Apr 2019 12:44:34 GMT

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

RE: ISSUE : TWI device detected at address

Yuvaraj V — Tue, 02 Apr 2019 13:14:54 GMT

Hi Marjeris,

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

Regards,

Yuvaraj

RE: ISSUE : TWI device detected at address

Marjeris Romero — Tue, 02 Apr 2019 12:37:00 GMT

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

RE: ISSUE : TWI device detected at address

Yuvaraj V — Wed, 27 Mar 2019 04:13:04 GMT

Hi Marjeris,

I connect Like this...

Regards,

Yuvaraj

RE: ISSUE : TWI device detected at address

awneil — Tue, 19 Mar 2019 16:32:31 GMT

[quote userid="73427" url="~/f/nordic-q-a/44855/issue-twi-device-detected-at-address/177138"]Could you describe how the LIS3DH sensor is connected to the nRF52832 DK? Which pins, etc.[/quote]

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

RE: ISSUE : TWI device detected at address

Marjeris Romero — Tue, 19 Mar 2019 16:02:17 GMT

Hi Yuvaraj,

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

Best Regards,

Marjeris

RE: ISSUE : TWI device detected at address

Yuvaraj V — Tue, 19 Mar 2019 05:21:11 GMT

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

RE: ISSUE : TWI device detected at address

awneil — Sat, 16 Mar 2019 09:13:01 GMT

Note that you can capture just the current window - instead of the whole screen - by using Alt+PrintScreen

RE: ISSUE : TWI device detected at address

Yuvaraj V — Sat, 16 Mar 2019 06:25:38 GMT

Hi Marjeris,

I did the twi scanner test and it indicates like this snapshot. Please find attached a snapshot.

Regards,

Yuvaraj

RE: ISSUE : TWI device detected at address

Marjeris Romero — Fri, 15 Mar 2019 14:28:16 GMT

Hi Yuvaraj,

Can you test using the twi_scanner example from our SDK and see if you got the same error? You can find in under examples\peripheral\twi_scanner.

https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-3-0/twi_scanner_example

Best Regards,

Marjeris

RE: ISSUE : TWI device detected at address

Yuvaraj V — Fri, 15 Mar 2019 04:28:13 GMT

Hi Marjeris,

One LIS3DH device only...

Regards,

Yuvaraj

RE: ISSUE : TWI device detected at address

Marjeris Romero — Thu, 14 Mar 2019 17:02:52 GMT

Hi Yuvaraj,

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

Best Regards,

Marjeris