Remora - ethernet NVEM / EC300 / EC500 cnc board

rbobey1989 wrote:

Hello GeremyL, you talked about pins but I don't understand you, -, YP-...... are outputs of the am26ls31c differential line driver, this ic has 4 inputs and 4 pairs of differential outputs, therefore this ic convert GPIO_AD_B1_06 ( pad of rt1052) in + and -, the GPIO1 module can be connected in this pad through GPIO1_IO22(that is X_DIR_PIN), then -, YP-..... are not direct pins of rt1052 GPIO_AD_B1_06 yes it is, So if you have problems with the negative differential signals, I would look for the problem in the line drivers ic. Furthermore, to use these pads as input pins you have to modify the hardware, which does not seem attractive to me, greetings
 

Thank you very much rbobey1989, I haven’t had the time to investigate the IC chip or circuit much. I dont know if anything is exactly wrong with the IC chips they are probably fine, but to me it seems a little weird they would do it like this and I dont think my drivers like it very much, they are very high quality drivers so not sure if its quality or compatibility that I’m seeing non existing haha.

GeramyL wrote:

chrstrvs wrote:

Hey, Scott (or any volunteer)!

Have you had the time to look at my config files that are causing the following errors? I use the remora-nvem-basic config from github.com/scottalford75/Remora-NVEM/tree/main/LinuxCNC , also attached to this message.
 

Can you please share your .txt file you have uploaded to your board and also what is your ping response time?
It helps to add PGAIN to your hal file and .ini file.
 

Sure! The config is attached. I have tried with both the nvem-basic-config.txt and nvem-full-config.txt, but the result is the same.

This is the respons time:
PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.
64 bytes from 10.10.10.10: icmp_seq=1 ttl=255 time=0.331 ms
64 bytes from 10.10.10.10: icmp_seq=2 ttl=255 time=0.262 ms
64 bytes from 10.10.10.10: icmp_seq=3 ttl=255 time=0.298 ms
64 bytes from 10.10.10.10: icmp_seq=4 ttl=255 time=0.268 ms
64 bytes from 10.10.10.10: icmp_seq=5 ttl=255 time=0.296 ms
64 bytes from 10.10.10.10: icmp_seq=6 ttl=255 time=0.267 ms
64 bytes from 10.10.10.10: icmp_seq=7 ttl=255 time=0.258 ms

How would one go about adding PGAIN?

chrstrvs wrote:

Hey, Scott (or any volunteer)!

Have you had the time to look at my config files that are causing the following errors? I use the remora-nvem-basic config from github.com/scottalford75/Remora-NVEM/tree/main/LinuxCNC , also attached to this message.

Hi, I've had a look at your config files and they are identical to mine, and I can run with a 1000% feed override without following errors....

Now I'm really scratching my head to understand what could be going on. Do you have the serial debug output connected? It would be interesting to see if there are any issues on the board.

Ping response times are longer than I'm getting though, averaging around 0.17ms. Do you have a router in between the NVEM and computer?

chrstrvs wrote:

GeramyL wrote:

chrstrvs wrote:

Hey, Scott (or any volunteer)!

Have you had the time to look at my config files that are causing the following errors? I use the remora-nvem-basic config from github.com/scottalford75/Remora-NVEM/tree/main/LinuxCNC , also attached to this message.
 
Can you please share your .txt file you have uploaded to your board and also what is your ping response time?
It helps to add PGAIN to your hal file and .ini file.
 
Sure! The config is attached. I have tried with both the nvem-basic-config.txt and nvem-full-config.txt, but the result is the same.

This is the respons time:
PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.
64 bytes from 10.10.10.10: icmp_seq=1 ttl=255 time=0.331 ms
64 bytes from 10.10.10.10: icmp_seq=2 ttl=255 time=0.262 ms
64 bytes from 10.10.10.10: icmp_seq=3 ttl=255 time=0.298 ms
64 bytes from 10.10.10.10: icmp_seq=4 ttl=255 time=0.268 ms
64 bytes from 10.10.10.10: icmp_seq=5 ttl=255 time=0.296 ms
64 bytes from 10.10.10.10: icmp_seq=6 ttl=255 time=0.267 ms
64 bytes from 10.10.10.10: icmp_seq=7 ttl=255 time=0.258 ms

How would one go about adding PGAIN?

I would lookup on linuxcnc about the mesa cards and how to optimize your ping time with a mesa card, that should help you. Please respond back with your ethernet chipset too please. Sometimes with intel ethernet cards you need to disable things like buffers and hardware acceleration. I also had a problem with my ping times, I upgraded to the newest debian and newest linux real time kernel but the one provided by linuxcnc which is 3.10 and I get around 0.14ms to 0.17ms. also removed a lot of background services. I first recommend getting that ping time down. That will hurt you a lot as it did me. The next one is get the pgain added to your configs so you can reduce some of that ferror enough to be happy your machine moves at least.

scotta wrote:

chrstrvs wrote:

Hey, Scott (or any volunteer)!

Have you had the time to look at my config files that are causing the following errors? I use the remora-nvem-basic config from github.com/scottalford75/Remora-NVEM/tree/main/LinuxCNC , also attached to this message.
Hi, I've had a look at your config files and they are identical to mine, and I can run with a 1000% feed override without following errors....

Now I'm really scratching my head to understand what could be going on. Do you have the serial debug output connected? It would be interesting to see if there are any issues on the board.
 

Let me explain exactly what I have done. Maybe you can spot something that I've done wrong.
- Full chip erase on NVEM using STM32 ST-LINK Utility
- Flash NVEM with Remora-NVEM-STM32-1.0.0.bin from github.com/scottalford75/Remora-NVEM/tree/main/Firmware using STM32 ST-LINK Utility
- Install Raspberry Pi OS (Legacy) 32 bit
- Install LinuxCNC and realtime Kernel according to forum.linuxcnc.org/9-installing-linuxcnc...n-raspberry-pi-3b-pi
- Copy github.com/scottalford75/Remora-NVEM/tre...es/remora-nvem-basic to /home/pi/linuxcnc/configs
- Copy github.com/scottalford75/Remora-NVEM/tre...Components/Remora-nv to /home/pi/linuxcnc/components
- Install remora-nv component using - Install pyocd using - Write config to NVEM using
And that's it I think. Can you spot anything I might have done wrong?

I do not have the serial debug output connected, but I can do that if there is a guide I can follow. Do you happen to have one? image missing /media/kunena/emoticons/smile.png

scotta wrote:

Ping response times are longer than I'm getting though, averaging around 0.17ms. Do you have a router in between the NVEM and computer?
 

No router. 2 meter cable directly from the Pi to the NVEM. Is the response time high enough to cause these errors you think?