ERC12864 display with the ST7565R controller

Other Hardware Displays
1

Hi all,

A few days ago I bought the ERC12864 128x64 display from EastRising. Now I have some trouble initializing it.
The problem is that after powering up and sending some init commands nothing happens.. And I really don't know where to start debugging.

I have used an Arduino UNO (icw a voltage level shifter 5-3.3v), the GPIO port of the Raspberry PI and the PIC 18F4550 for some testing. But none of those can actually "access" the display. Although, I don't think the display is broken..

The attachment is the electrical circuit i'm using. (Except for the MCU)

First of all, does anyone know what the start-up procedure is of these type of displays? And is the backlight controlled by the ST7565R? If so, that explains why nothing happens after powering up.

wiring.png

ERC12864-1 Series Manual.pdf (2.48 MB)

Controller ST7565R Data Sheet.pdf (1.29 MB)

2

Hi

U8glib supports displays, based on the ST7565 controller. Best is to try several U8glib constructors for that controller. Maybe one existing is fitting. If not, i can support to adjust an existing U8glib constructor.

The backlight is independent from the ST7565. Depending on the color, the maximum current is given on page 10 of the datasheet. You must apply an external resistor to meet the specification. If you connect the red/black wire directly to a power source you will destroy the backlight.
ResistorValue = (SupplyVoltage - VLED)/ILED

Whether the display is readable without the backlight depends on the "sunlight readable" attribute of your display (see page 6 of the data sheet). You will be able to read something without backlight if your display is "sunlight readable".

Oliver