LCDproc development and user support list

Text archives Help

[Lcdproc] Patch adds support for the Adafruit PiPlate

Chronological Thread 
  • From: bsdfan at (Markus Dolze)
  • Subject: [Lcdproc] Patch adds support for the Adafruit PiPlate
  • Date: Tue, 12 Feb 2013 08:29:21 +0100

On 11.02.2013 22:32, Jonathan Brogdon wrote:
> Never saw this on the mailing list, or a response. Re-sending.
> Jon
> ---------- Forwarded message ----------
> From: *Jonathan Brogdon* <jlbrogdon at
> <mailto:jlbrogdon at>>
> Date: Sat, Feb 9, 2013 at 1:26 AM
> Subject: [PATCH] Add support for the Adafruit PiPlate
> To: lcdproc at <mailto:lcdproc at>
> For your consideration, I have attached a v0.5.6 patch which adds a
> driver for the Adafruit PiPlate (
> The PiPlate includes a HD44780 LCD and 5 button keys which is
> accessed via a MCP23017 I2C IO expander.
> The driver was adapted from the HD44780-i2c driver, which uses the
> PCF8574 I2C IO expander.
> Jon Brogdon


please read [1]. Thank you.


According to the schematic from [1], the pin for blue backlight is on
GPB0, not on GPA8 (which does not exist anyway).

Is the schematic wrong or did I miss something?



Archive powered by MHonArc 2.6.18.

Top of page