ChibiOS Free Embedded RTOS

OK - problem solved but that took a bit of work to decipher the mcuconfig, board.h, and Can timing relationships. I think there can be a doc for dummys, that one (maybe me) might publish on how to handle boards of different timing.
The Mini-m4 runs at 120mhz - not 168. I was confused by looking at ...

And yes, using a scope to look at the signals coming out of the B8/B9 pins on the M4, they are not the same as those on the Disco. So clearly I have some kind of pin mapping issue.

Sorry for inadequate info. Im using max3051 transceivers. I put two of them in a breakout board, back to back, with a 120ohm resistor across Can H/L. Im pretty much using your testhal CAN sw. All boards use B8/B9 for talking to the transceivers. When I connect my two disco boards to the transceivers ...

Thanks for the fast reply. So based on your comment, I should be able to leverage the discovery board files, for the M4, with the only issue being that the M4 has fewer pins? As long as I use common pins, I should be good? If thats the case, then the implication is that the problem is in my wiring ...

Hmm - Ive been using STM32f4Disco for years now, and it works fine with every IO I have tried. I have a microe Mini-M4, and have done some basic things with it. I have the usart working (C10,C11), but was trying to get CAN going, and thus far, have failed. CAN loopback works fine, but things are not ...

Hmm. I think we can delete this thread. I removed some custom HW, and the problem went away. There is clearly a ground/noise issue, with my HW.

The voltage value is not my issue. Im seeing some kind of weirdness with the tach/EXT. Only when the voltage being sampled on the ADC, is varying. If that voltage is steady, the tach/ext input counts correctly. Again, Im driving the tach with a fixed freq 100hz clock. There is no variation of that ...

This is a peculiar situation: I have a stm32f407 disco board, interfacing with a bunch of different external devices. Two in particular are an adc sampling voltage, and the ext driver being used to count pulses from a tach. Independently, these work perfectly. In fact, if the voltage being sampled ...

So, Ive ordered an SD Card xface, and will use that when it arrives. Im still curious about the onboard Flash though...

I know this topic must have come up, but I don't find anything obvious in the forum. Im using an stm32f407 - the cheapie board. I would like to write events to NVRAM.
- Does chibios have support for writing to flash/nvram that is native to this board?
Just point me to the appropriate thread that I ...