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fdarling / mesa-smartserial-device-template

Mesa SmartSerial (SSLBP) custom device template project
GNU General Public License v3.0
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test code? #1

Open c-morley opened 3 years ago

c-morley commented 3 years ago

Do you have test code to try? I would like to use STM32 with Arduino IDE. Did you know that there is a guy who did something similar with the STM32 f1.f4 but using the STM IDE (which is very complicated)

https://forum.linuxcnc.org/41-guis/38222-usb-haas-operator-panel-interface?start=20

fdarling commented 3 years ago

I am not sure what you are asking for. I was using a Teensy 3.2 which uses an ARM chip from NXP/Freescale, but it should also work on an STM32. As I said in the README, the code is easily adapted to another microcontroller and framework.

c-morley commented 3 years ago

As I understand it your code is the library to do sserial. I was looking for example code using your library. Blinking the LED on each linuxcnc read request would probably be enough. I'm very new to micros

fdarling commented 3 years ago

My code isn't actually written in library form, it's a template. I got help from Peter Wallace of Mesa Electronics, as well as used some code on LinuxCNC's forums as a guide. I don't 100% implement the LPB8 protocol, nor do I claim to. I would love to eventually make this into library form with an API and such, but at the moment it's just a functioning reference. If you aren't versed in C programming nor microcontroller development, there might be a steep learning curve.

That being said, the code actually does blink an LED currently in response to communication with LinuxCNC. It's set up to have an input and output 32-bit integer values. The "input" value (from the device to LinuxCNC) is just a counter to show that it's changing with every read, and the "output" value is stored but not actually used at the moment. See these lines:

preparing data going out to LinuxCNC: https://github.com/fdarling/mesa-smartserial-device-template/blob/a29ee45c41fa3f7d7e5b37cf8b2d2a77e05f2472/Mesa_SmartSerial_Device_Template_Project/Mesa_SmartSerial_Device_Template_Project.ino#L318

using data coming from LinuxCNC: https://github.com/fdarling/mesa-smartserial-device-template/blob/a29ee45c41fa3f7d7e5b37cf8b2d2a77e05f2472/Mesa_SmartSerial_Device_Template_Project/Mesa_SmartSerial_Device_Template_Project.ino#L324-L333

where the pins are defined: https://github.com/fdarling/mesa-smartserial-device-template/blob/a29ee45c41fa3f7d7e5b37cf8b2d2a77e05f2472/Mesa_SmartSerial_Device_Template_Project/Mesa_SmartSerial_Device_Template_Project.ino#L80-L101

Again, this will have a steep learning curve if you don't have the background knowledge in C, microcontrollers, and the Mesa Electronics documentation on the protocol.

c-morley commented 3 years ago

Ok thanks - I misunderstood what you meant by template. Thanks for the tips - I'll see what i can accomplish.