MicroPython Forum (Archive)

@dhylands

For info, I got the Adafruit lcd-backpack, implemented it with your code, and it works perfectly.

It gave me 6 newly freed pins as well!

Thanks for that great tip!

Ciao,
Bob

Thanks for that explanation!

I believe that my programming is about done! Today, after exchanging some pins' functionality, I was able to execute a full test with no errors!!!

Thank you all, micropython/pyboard world!

Ciao,
Bob

Thanks for that reply! I'm sorry if I did not explain well. I would not be using the MOSI, SCK, or SS pins for anything else. But I would like to use the interrupt lines associated with those pins for ExtInt. For example: the SCK pin X6 is associated with interrupt line 5. I would like to be able to...

Hi Dave, I have one more question regarding pin usage conflicts. I use SPI on the X side (X5,X6,X7,X8), but only in Master mode, so I never read on the MISO pin X7. In that case, am I free to use X7 as input or output? Also, are the interrupt lines associated with the pins X5 = line 4, X6=line 5, X7...

Great news!

Tomorrow I hope to get it working!

The LCD Backpack has been ordered just in case!

Ciao,
Bob

Dave, you have done it again! Thanks so much! I just ordered one of those backpacks! and plan on using your code to make it work, again.... In the meantime, do you not think that I could connect a pushbutton to X17 and configure an interrupt as: ExtInt('X17',ExtiInt.IRQ_FALLING,Pin.PULL_UP) and that...

Thanks again, Dave.

But if I need to use the X9/X10 pins for the Accel instance, can they also be used for the LCD backpack, at the same time?

Sorry for my immense ignorance...

@spotlightkid Thanks, but I'm already in 4bit mode... I'm thinking of using X17 as an ExtInt driven pull up input pin connected to a pushbutton. It seems to me that would be compatible with the USR button functionality? I would have to be careful to never hold the pushbutton down during boot, that's...

Thanks Dave. It looks like I'm really stuck. My only output pins are those connected tot the 16x2 LCD display. I am using your pyb_gpio_lcd.py code for that and you configure those pins as Pin.OUT_PP... I don't know if Pin.OUT_OD would work in your code or not and I don't have the lcd with me today ...

Ok, thanks. My only remaining pins are: X17 - the dreaded USR switch pin! could this be used for input and/or output without any switch problems? P2, P3, P4, P5 : these are the LED pins, but I don't care about the LEDs, can they be used as input and/or output? I would not have to configure ExtInts o...