Using an LCD display with the Proto Shield Plus - Parallel configuration

Published : 04/06/2018 11:11:23
Categories : Proto Shield Plus


Using the LCD with parallel configuration


Even if driving an LCD with I2C let's you save a lot of I/O pins, in some cases you should prefer to use an LCD parallel configuration.

To configure the Proto Shield Plus to work with LCD parallel configuration, you need to configure the following jumpers 

Configure jumpers as follows:

SJA4SDA = OPEN
SJA5SCL = OPEN
SJD2SDA = OPEN
SJD3SCL = OPEN
SJSDA = OPEN
SJSCL = OPEN
SJBL = OPEN
SJRS = OPEN
SJE = OPEN
SJP4 = OPEN
SJP5 = OPEN
SJP6 = OPEN
SJP7 = OPEN
SJD4 = CLOSE
SJD5 = CLOSE
SJD6 = CLOSE
SJD7 = CLOSE
SJD8 = CLOSE
SJD9 = CLOSE
SJD10 = CLOSE

To prototype with LCD parallel configuration you need to use the LiquidCrystal library.
This library makes use of digital pins 4, 5, 6, 7, 8, 9 and 10, thus be sure to reserve these pins for the LCD.
Refer to the sketch APSP_demo in the APSP_Sample_Projects_V3.zip (Click here to downloadfile.


Using different pins for the parallel configuration


This is useful if your application requires a parallel connection but you want to use different pins than 4, 5, 6, 7, 8, 9 and 10.
Open SJD4, SJD5, SJD6, SJD7, SJD8, SJD9 and SJD10 and use LCDRW, LCDRS, LCDE, LCDD4, LCDD5, LCDD6, LCDD7, LCDBL to connect your desired signals to the LCD.

Proto Shield Plus LCD parallel custom Pins


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