4 axis with btt octopus 1.1 issue

[Flowbey]

The Firmware works fine for btt octopus 1.1 with 3 axis and x y z ganged. But as soon as i try 4 axis without ganged motors, something is wrong. no motor is turning and the command M122 Shows only:

m122 [TRINAMIC]

and the board hangs up.

after compiling the setting in grbl $338 shows $338 = 15. X Y Z A is on. Thats correct with the doc from plugin: $338 - Driver enable Parameter is a axismask where value is sum of X=1, Y=2, Z=4 etc.

when i change the setting $338=7 X Y Z is on everything works fine except i dont have A Axis.

M122 shows:

m122 [TRINAMIC] X Y Z Driver TMC2209 TMC2209 TMC2209 Set current 500 500 500 RMS current 489 489 489 Peak current 691 691 691 Run current 15/31 15/31 15/31 Hold current 7/31 7/31 7/31 CS actual 7/31 7/31 7/31

and more.......

so now when i try change back the setting $338=15 it says:

$338=15 An error was detected while sending '$338=15': (error:52)

do i miss something to change before compiling for 4 axis? could it be that something is missing in eeprom for 4 axis?

Thanks a lot for your effort

[terjeio]

when i try change back the setting $338=15 it says: $338=15 An error was detected while sending '$338=15': (error:52)

You cannot set $338 to 15 unless the fourth axis is added so that is as expected.

Since the board hangs on a M122 command when 4 axes are configured something is going wrong in the code. Sadly I am not able to check that out until I am back home early next month since I do not have a board with a F4 processor available for debugging where I am now.

[Flowbey]

Thank you I will try to find whats going on, but my skills in coding are limited.

[terjeio]

It could be bad mapping for the M3 UART pin or incorrect jumper settings. Which source are you using for the build?

[Flowbey]

It could be bad mapping for the M3 UART pin or incorrect jumper settings. Which source are you using for the build?

i used a clone of https://github.com/ErdbeermarmeladebrotmitHonig/STM32F4xx and build it with platformio. the pin map should work because it works with ganged motors.

i will try again with ganged motors to make shure it‘s not the pin maping.

[terjeio]

the pin map should work because it works with ganged motors.

Can you check with the $pins command that the UART port for the fourth (M3) motor is the correct one when enabling 4 axes (and no ganging)?

[Flowbey]

so $pins shows:

$pins [PIN:PG6,X limit min] [PIN:PG12,Y limit min] [PIN:PG13,Z limit min] [PIN:PG11,N/A] [PIN:PE6,X step] [PIN:PG0,Y step] [PIN:PC13,Z step] [PIN:PE2,N/A] [PIN:PA14,X dir] [PIN:PG1,Y dir] [PIN:PF0,Z dir] [PIN:PE3,N/A] [PIN:PE0,X enable] [PIN:PF15,Y enable] [PIN:PF1,Z enable] [PIN:PD4,N/A] [PIN:PD12,Spindle on] [PIN:PA8,Spindle PWM] [PIN:PB10,Mist] [PIN:PA3,Flood] [PIN:PE5,Aux out 1,P0] [PIN:PD13,Aux out 3,P1] [PIN:PD14,Aux out 4,P2] [PIN:PD15,Aux out 5,Fan 0] [PIN:PB8,I2C SCK] [PIN:PB9,I2C SDA] [PIN:PD3,UART X] [PIN:PD11,UART Y] [PIN:PE4,UART Z] [PIN:PE1,UART M3] [PIN:PA10,RX,UART1] [PIN:PA9,TX,UART1] [PIN:PD6,RX,UART2] [PIN:PD5,TX,UART2] [PIN:PD9,RX,UART3] [PIN:PD8,TX,UART3] ok

So [PIN:PE1,UART M3] looks correct for me. it has to be the cs pin. refer to x axis wich is also a cs pin

acording to:

[Flowbey]

the command $$ shows:

... $44 = 4
$45 = 3
$46 = 0
$62 = 0
$63 = 3
$64 = 0
$100 = 250.00000 (X-axis travel resolution, step/mm) $101 = 250.00000 (Y-axis travel resolution, step/mm) $102 = 250.00000 (Z-axis travel resolution, step/mm) $110 = 500.000 (X-axis maximum rate, mm/min) $111 = 500.000 (Y-axis maximum rate, mm/min) $112 = 500.000 (Z-axis maximum rate, mm/min) $120 = 10.000 (X-axis acceleration, mm/sec^2) $121 = 10.000 (Y-axis acceleration, mm/sec^2) $122 = 10.000 (Z-axis acceleration, mm/sec^2) $130 = 200.000 (X-axis maximum travel, millimeters) $131 = 200.000 (Y-axis maximum travel, millimeters) $132 = 200.000 (Z-axis maximum travel, millimeters) $140 = 500
$141 = 500
$142 = 500
...

should't there settings for A axis ?

[terjeio]

should't there settings for A axis ?

Yes, enabled here by changing the value to 4. Or by adding the symbol to platformio.ini (-D N_AXIS=4).

[Flowbey]

should't there settings for A axis ?

Yes, enabled here by changing the value to 4. Or by adding the symbol to platformio.ini (-D N_AXIS=4).

I changed the value in config.h

I found something …. But i have to go working now. I can test more in 12 hours

[Flowbey]

should't there settings for A axis ?

Yes, enabled here by changing the value to 4. Or by adding the symbol to platformio.ini (-D N_AXIS=4).

now it works. the thing is what you said with the build_flag in platformio.ini -D N_AXIS=4

i mean i had already the define 4 Axes in config.h:

ifndef N_AXIS

define N_AXIS 4 // Number of axes

endif

But it looks like that does not compile correctly.

[terjeio]

If N_AXIS is defined in the pio file then that takes precedence, maybe that was the reason?

[Flowbey]

yes, that looks like.

Thank you for your input with the pio file