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Yes I checked spi status. There was no problem. I also added Blink module to check if firmware is flashed correctly and working. I too had octopus pro board. But I wanted tmc5160 drivers working so I bought skr3. I can see signals in hal meter, but in GUI I am getting No signals what ever

Don't know the answer to that question.

Linuxcnc is the execution of a number of halfiles by halcmd.
Check /usr/bin/linuxcnc for how it is done, it's a bash script.

You can execute the hal statements in the ec3a.hal file withMaybe you can puzzle something together.

So I attached a schematic with the pinouts in my previous post. I'm interested in learning what the process is for creating the firmware for a situation like mine where I do not have a daughter card. Do I load on of the provided files and modify the pinfile?

 

Have you tried to open the HAL configuration after the axis gui comes up and add in the pins you want to monitor. I would have the SPI status and enable pins there to check and see if your SPI connection is stable. I initially had a problem with the board I was using not getting a good flash and I had to use the BTT tool they talk about in their wiki to rewrite the original firmware before I could load the Remora firmware.bin to the root of the SD card and then it finally loaded the firmware correctly. I also ran into some issues with the firmware constantly resetting itself if I tried certain settings in my config.txt file. This is what I currently have in the conifg.txt file which may not be helpful since I'm running an Octopus v1.1 board.

{
"Board": "BIGTREETECH OCTOPUS PRO V1.1 STM32F446",
"Modules": [
{
"Thread": "Servo",
"Type": "Digital Pin",
"Comment": "X-min endstop",
"Pin": "PG_9",
"Mode": "Input",
"Invert": "True",
"Data Bit": "1",
"Modifier": "Pull Up"
},
{
"Thread": "Servo",
"Type": "Digital Pin",
"Comment": "Y1-min endstop (left Y motor)",
"Pin": "PG_10",
"Mode": "Input",
"Invert": "True",
"Data Bit": "2",
"Modifier": "Pull Up"
},
{
"Thread": "Servo",
"Type": "Digital Pin",
"Comment": "Y2-min endstop (right Y motor)",
"Pin": "PG_11",
"Mode": "Input",
"Invert": "True",
"Data Bit": "3",
"Modifier": "Pull Up"
},
{
"Thread": "Servo",
"Type": "Digital Pin",
"Comment": "Z-min endstop",
"Pin": "PG_12",
"Mode": "Input",
"Invert": "True",
"Data Bit": "4",
"Modifier": "Pull Up"
},
{
"Thread": "Servo",
"Type": "Digital Pin",
"Comment": "E-stop input",
"Pin": "PG_15",
"Mode": "Input",
"Invert": "True",
"Data Bit": "5",
"Modifier": "Pull Up"
},
{
"Thread": "Servo",
"Type": "Digital Pin",
"Comment": "Probe input",
"Pin": "PB_7",
"Mode": "Input",
"Data Bit": "6",
"Modifier": "Pull Up"
},
{
"Thread": "Servo",
"Type": "Digital Pin",
"Comment": "Coolant flood",
"Pin": "PD_12",
"Mode": "Output",
"Data Bit": "1"
},
{
"Thread": "Servo",
"Type": "Digital Pin",
"Comment": "Coolant mist",
"Pin": "PD_13",
"Mode": "Output",
"Data Bit": "2"
},
{
"Thread": "Base",
"Type": "Stepgen",
"Comment": "X-axis - Stepper Driver 0",
"Joint Number": 0,
"Step Pin": "PF_13",
"Direction Pin": "PF_12",
"Enable Pin": "PF_14"
},
{
"Thread": "Base",
"Type": "Stepgen",
"Comment": "Y1-axis (left Y motor) - Stepper Driver 1",
"Joint Number": 1,
"Step Pin": "PG_0",
"Direction Pin": "PG_1",
"Enable Pin": "PF_15"
},
{
"Thread": "Base",
"Type": "Stepgen",
"Comment": "Y2-axis (right Y motor) - Stepper Driver 2",
"Joint Number": 2,
"Step Pin": "PF_11",
"Direction Pin": "PG_3",
"Enable Pin": "PG_5"
},
{
"Thread": "Base",
"Type": "Stepgen",
"Comment": "Z-axis - Stepper Driver 3",
"Joint Number": 3,
"Step Pin": "PG_4",
"Direction Pin": "PC_1",
"Enable Pin": "PA_0"
},
{
"Thread": "Servo",
"Type": "Reset Pin",
"Comment": "Reset pin",
"Pin": "PC_15"
}
]
}

Z400, Z420, Z600, and probably Z440, Z620, Z640, Z800, Z820 should all do just fine, those 3 at the start i have tested over 20 by now. Also HP 8300 SFF are pretty good, i have maybe 6 or 7 in daily use on machines.
Dell Optiplex series are also good, 7020, 9020 and 980, these i have in daily use, several of them for several years, but they do tend to heat much more than HP ones.