Remora - Rpi Software Stepping Using External Microcontroller via SPI

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28 Dec 2021 01:52 - 28 Dec 2021 01:52 #230104 by cakeslob
shortest cable didnt fix it, just changed the the bad spi payload values

unrelated, what was the steps for setting the the thread speeds in the config.txt? ive been playing with the hal divider but I cant find where the info was posted
Last edit: 28 Dec 2021 01:52 by cakeslob.

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28 Dec 2021 04:20 - 28 Dec 2021 04:22 #230118 by scotta
It was in the other topic on the 1.0rc

forum.linuxcnc.org/18-computer/43988-rem...ting?start=30#224743

loadrt remora chip_type=STM SPI_clk_div=16 PRU_base_freq=40000

BTW as a minimum for the Monster 8 as it's the same MCU as the SKR2
loadrt remora chip_type=STM
Last edit: 28 Dec 2021 04:22 by scotta.

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28 Dec 2021 23:13 #230183 by cakeslob
I was reading some issues with marlin and the monster8 about using the sd card and the spi1 on exp2 at the same time, Im not 100% of its related to the pinout of the lcd screens/marlin configuration or not, but anyways, they are using a software pin instead of PA4 , so I did a software nss for spi1 cs pin but it did not seem to make a difference. 

Also I noticed the robin doesnt deinitialize block device in main.cpp so i removed that section but still nothing.

I am stumped now as to where I go from here, or what to troubleshoot. I can start probing spi shit but ill have to read up about it first.

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05 Jan 2022 10:17 #230851 by Zuo99
I want to know if you can use EXP1 instead of EXP2 when using skr v1.4 turbo

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06 Jan 2022 20:49 #230986 by scotta
No, there is not an available SPI connection on EXP1, they are on EXP2 and the SD card.

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08 Jan 2022 10:21 #231101 by wazza77
Hi Scotta,
with the sed arch max (stm32black) what spi port did you connect the pi to. ( i have just finished making the testbed so now messing with the boards )

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08 Jan 2022 20:27 #231164 by scotta

Hi Scotta,
with the sed arch max (stm32black) what spi port did you connect the pi to. ( i have just finished making the testbed so now messing with the boards )

The firmware is configured for comms on SPI1. Note that I have not tested this board myself but others have it working.

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09 Jan 2022 00:06 #231200 by wazza77
yeah I most likely stuffed something up I can't get linuxcnc to come out of the stop, and the hall pins are showing false on the spi out i have just modified the SKR2 config.txt and a modified remora-xyz.hal  

File Attachment:

File Name: remora-xyz.hal
File Size:2 KB
 

File Attachment:

File Name: config.txt
File Size:2 KB
if a fresh pair of eyes could have a quick look that would be apreciated
Attachments:

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09 Jan 2022 06:46 #231221 by wazza77
I am assuming serial port is serial 1 I get my connection on cutecom but when I reset the board I get nothing in the terminal window. I installed the .bin file via stlink 2 and have config.txt on sd card, Led 2 lights when I have the sd card in the slot so that tells me it is accessing the card but that's it!

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09 Jan 2022 12:47 #231242 by wazza77
I'm not getting a spi signal out of raspberry pi according to my logic analyser that being said I now know why I threw it in a box in the corner a decade ago one of the input drivers is shot and supplied 12v to the stm32 so 1 down grabbed a fresh one out of the box and try again

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