Atmel Lightweight Mesh and I2C slave

• Atmel Lightweight Mesh and I2C slave
  Posted by piotrvv on 23 Nov, 2016 22:07
• Hello.
  
   I try to develope LwM coordinator with I2C slave. Seperate I2C and stack works fine. But when I set it in one time, master always reads bad data. Hardware: master - Raspberry PI (100kHz), slave- SAMR21Xplained, software: WSNDEMO app from atmel studio + i2c slave (callback mode). I cut usart printing, but it doesn't help at all. I2C frame has 16B length. Is it possible to build stable project? Will service stack allow i2c slave work correctly?
  
  Best regards,
  Piotrvv
• #1 Reply
  Posted by ataradov on 23 Nov, 2016 23:18
• I see no reason for it not to work technically. I don't know what is wrong with ASF drivers, I recommend using standalone LwMesh and writing bare metal I2C driver.
• #2 Reply
  Posted by piotrvv on 06 Dec, 2016 10:46
• New ASF project works (it was new ASF version meantime), but I had to slow down SCK to 20kHz. I know, it's pretty slow, but enough for me.
  Best regards,
  Piotrvv
  
• #3 Reply
  Posted by ataradov on 06 Dec, 2016 17:27
• This is really weird if you have to do things like this to make your program work. I would investigate and figure this out before moving on, things may break later on in a way that is much harder to debug.
• #4 Reply
  Posted by piotrvv on 07 Dec, 2016 23:01
• I atacched my simple project. Master can read 16B from four internal adresses: 11-14. Slave works fine on 100kHz without stack.
  
  https://drive.google.com/file/d/0B8NjEbzmcZQvaWQ3U25kdVNMZHc/view?usp=sharing
  
  Regards,
  Piotrvv
• #5 Reply
  Posted by ataradov on 07 Dec, 2016 23:20
• Well, I can't debug things remotely. Plus this is ASF, and I don't do ASF.