Remora - Rpi Software Stepping Using External Microcontroller via SPI

ok so some strange activity while trying to debug things I used the serial wire viewer switched stimulus port to all clicked start and started linuxcnc and it works I also get serial coms back! so I have no idea why that worked im getting joint following errors but I will work that out. any ideas why the serial wire viewer would make it work?

cakeslob wrote:

Ok, I dont kniow anything about the bare metal build, but I think I just missed an I or a Z somewhere in the custom targets json, so I have it built, like normal.

edit, holy shit it works, finally a working one thanks for the help scott , ill upload the stuff in a moment

Great news! Please share a link or create a pull request. Thanks

wazza77 wrote:

Morning cakeslob
0x8000000 is the standard location in ST utility I was just wondering if there had been an allowance for a boot loader etc.
I get nothing from the uart I'm trying to eliminate everything I can should I receive data from uart the instant it powers up

For the SKR2 there is a bootloader with the application address:

"target.mbed_app_start": "0x08008000",

ok so at least I know I have spi and serial working I am looking into why it wouldn't boot maybe a reset issue but right now while I can get it to come out of estop and turn on the machine I get remora.joint enable if I use manual control and move a axis I can see remora joint pos-cmd  increase but I get no remora joint pos-fb I have looked at my config compared to other examples and everything looks fine    I have checked if the limit switches are being tripped but they are showing nothing

wazza77 i dont see in your files any reference to limit switches.
example
net X-min remora.input.0 => joint.0.home-sw-in joint.0.neg-lim-sw-in

new Skr2 with stm32f429vgt works with octopus pro 429 firmware and regular skr2 config , so same old skr2 but with 180mhz
i set up uart pins for octopus to use tft connector same as skr2 for consistency

The monster8 - I hooked up the spi to my logic analyzer
first a bunch of 00, then some like some ff, then a whole bunch of stuff, then all 00 . all happens pretty fast. it looks the same as when I probe spi3 which is handling the sdblockdevice compared to the skr2 which looks like the matrix with all the spi stuff.

Stm32f446 boards - still cant get any of them to load 446 compiled firmware. Ive tried a bunch of different config flags and minor things , and setup a minimum blinky program with the current target profiles but I get nothing. the skr2 loads but messed up, but the stm32f429 firmware doesnt load at all. just observation.
Ive been going over this reference material
www.st.com/resource/en/application_note/...microelectronics.pdf

and checking over any examples of other 446 boards using mbed firmware but theres still something Im not getting. I found an example using 446 with a 25mhz clock, im not seeing too much different and setting an HSE value didnt seem to work.
github.com/uwrobotics/MarsRoverFirmware/.../custom_targets.json