compile and test LCDproc for the PCF8574T I2C IO expander

DigiSpark-PCF8574T-LCDproc.md

Howto

https://padcom.aplaline.com/2015/12/running-lcdproc-on-digispark.html

DigiSpark I2C

Micronucleus ATtiny bootloader

https://gist.github.com/Ircama/22707e938e9c8f169d9fe187797a2a2c#flashing-the-micronucleus

firmware

https://github.com/nopdotcom/i2c_tiny_usb-on-Little-Wire

vendor ID patch

https://gist.github.com/padcom/a4fd9836a04d7240ea6b/raw/d1b4b1a2e00bde3fcc87f9e0b9881872748950d3/digispark-littlewire-i2c-tiny-usb.patch

Pin assignment

P0: I2C SDA P2: I2C SCL

LCDProc

http://sourceforge.net/projects/lcdproc/files/latest/download?source=files

https://github.com/wilberforce/lcdproc

I2C PCF8574T driver patch

https://gist.github.com/padcom/c1c86b2dcdccc9bb0630/raw/8b3fe212c6b29aa7c05d25efa15aab2cfb43b96e/hd44780-i2c-pcf8574t.c.patch

GCC10 patch

https://bugs.gentoo.org/707788

https://patchwork.openembedded.org/patch/175285/raw/

manual

http://lcdproc.sourceforge.net/docs/current-user.html

running

./server/LCDd -f -c LCDd.cfg

telnet test

http://lcdproc.omnipotent.net/download/netstuff.txt

hello
screen_add 1
screen_set 1 -wid 10 -hgt 2
widget_add 1 2 string
widget_set 1 2 3 3 asdf