Regarding twi sensor

[Manoj Hiwarkar]

Dear Sir,

I am using nrf52832 & sdk 14. When I dump your twi sensor code(SDK14\nRF5_SDK_14.2.0_17b948a\examples\peripheral\twi_scanner\pca10040\blank\arm5_no_packs) in the nrf52832 development kit there is no activity observed on the oscilloscope on the pins SCL(P0.27) & SDA(P0.26).

But when I tried the same thing on nrf51422, I got the clock pulses. 

So please tell me what is the problem with the nrf52832 & sdk 14 (I have tried this with sdk12 also).

Regards,

Manoj Hiwarkar.

[Manoj Hiwarkar]

Ok how shall i send the project file to you?

[MartinBL]

You can just upload it here. In the comment "input field" click Insert -> Insert Image/Video/File and choose 'File Upload'. 

DId you try different pins? And by the way, do you have another kit you can try?

[Manoj Hiwarkar]

1.Yes I have tried with P0.24 & P0.25.

2. We have our target board , but we don't have another kit.

[Manoj Hiwarkar]

twi_scanner.rar

Here is the twi scanner file. please check

[MartinBL]

I tested your code and it worked out of the box. I used 

• An MPU9255 as slave (shouldn't matter though as long as you have functional slave device?)
• PCA10040 development kit
• SDK 14.2.0
• And these pins:

#define ARDUINO_SCL_PIN             27    // SCL signal pin
#define ARDUINO_SDA_PIN             26    // SDA signal pin

I have attached my .hex file. Can you try to program it to your kit and see if it works? If it doesn't, then your kit, or possibly any attached slave devices, seems to be broken. I have seen other cases where things work on my system, but not on the customer's, and in one particular case it turned out that the customer had changed his driver files and forgotten about it. Hence, it worked when I compiled the code with my original SDK files, but not when he compiled it with his modified files. So make sure to use original drivers.