search

grblHAL / core

grblHAL core code and master Wiki
Other
326 stars 85 forks source link

How to define the analog output of M68 for F4? #311

Closed hanke-cnc closed 1 year ago

hanke-cnc commented 1 year ago

Thanks to the powerful GRBLHAL, I defined many input and output pins of M62/M66 very easily. After testing the M62-M66 codes, everything worked fine. However, when I sent M68 to GRBLHAL, I received error 20. How can I define the analog output pins of M68?

hanke-cnc commented 1 year ago

I only defined the following content in my header file for testing the input/output of M62-M66. I am not sure if I need to define the analog output pins separately for M68. It seems that analog outputs cannot be on arbitrary pins as they are output by specific pins of the ADC:

define HAS_IOPORTS

define AUXINPUT0_PORT GPIOA

define AUXINPUT0_PIN 10

define AUXOUTPUT0_PORT GPIOB

define AUXOUTPUT0_PIN 0

terjeio commented 1 year ago

I recently added support for PWM type "analog" output to the iMXRT1062, RP2040 and STM32F4xx divers. Currently no board maps has this as an option though. The STM32F4xx has code in place for two outputs, AUXOUTPUT0_PWM_PORT and AUXOUTPUT1_PWM_PORT. Available pins are limited to those defined in driver.h and the pins has to be defined in the map file in the same way as for spindle PWM output. Support for DAC output has to be added to the new analog output code or as board specific code. I believe only two pins on the STM32F4xx can be used for DAC output, and I am not sure all variants has this option.

hanke-cnc commented 1 year ago

I recently added support for PWM type "analog" output to the iMXRT1062, RP2040 and STM32F4xx divers. Currently no board maps has this as an option though. The STM32F4xx has code in place for two outputs, AUXOUTPUT0_PWM_PORT and AUXOUTPUT1_PWM_PORT. Available pins are limited to those defined in driver.h and the pins has to be defined in the map file in the same way as for spindle PWM output. Support for DAC output has to be added to the new analog output code or as board specific code. I believe only two pins on the STM32F4xx can be used for DAC output, and I am not sure all variants has this option.

Great news! M68 can now output PWM.

hanke-cnc commented 1 year ago

I recently added support for PWM type "analog" output to the iMXRT1062, RP2040 and STM32F4xx divers. Currently no board maps has this as an option though. The STM32F4xx has code in place for two outputs, AUXOUTPUT0_PWM_PORT and AUXOUTPUT1_PWM_PORT. Available pins are limited to those defined in driver.h and the pins has to be defined in the map file in the same way as for spindle PWM output. Support for DAC output has to be added to the new analog output code or as board specific code. I believe only two pins on the STM32F4xx can be used for DAC output, and I am not sure all variants has this option.

Thank you wholeheartedly for your work, which has made GRBLHAL as powerful as LinuxCNC.