search

sandeepmistry / arduino-BLEPeripheral

An Arduino library for creating custom BLE peripherals with Nordic Semiconductor's nRF8001 or nR51822.
MIT License
462 stars 179 forks source link

nRF51822 e-Paper Module (SPI) #191

Closed Chop91 closed 6 years ago

Chop91 commented 6 years ago

Today I started a little project, a BLE e-paper display but I got stuck somewhere..

I bought the following e-paper: http://www.waveshare.com/wiki/2.9inch_e-Paper_Module#Working_with_Arduino

I tried the demo code with my Arduino Uno and everything worked just fine, but if I try to use the e-paper with the nRF51822 nothing happens. I tried the original arduino pin configuration on the nRF51822 and also the nRF51822, since I read somewhere ( I think the reference manual) that these pins should be the correct ones.

e-Paper Arduino nRF51822
3.3V 3V3 3V3
GND GND GND
DIN D11 24
CLK D13 25
CS D10 30
DC D9 9
RST D8 8
BUSY D7 7

But for both configurations the display does nothing. Maybe someone knows what I am doing wrong or can provide a working example for a nRF51822 using an e-paper display?

dmikhalsky commented 6 years ago

you have to look at varients.h pin definitions for Generic boards. You need SPI pins + a couple more

Chop91 commented 6 years ago

I bought the Waveshare BLE400 Kit from ebay, so I think I do not need the definition for generic boards. In the varients.h there is exactly the same pin definition as in my first posting.

e-Paper SPI Arduino Uno nRF51822
DIN MOSI D11 24
CLK SCK D13 25
CS SS D10 30

The remaining pins 7-9 should be fine too.

dmikhalsky commented 6 years ago

I briefly looked at Waveshare wiki, it looks like they have their own protocol (not SPI) that might be simply incompatible with nrf5x boards

sandeepmistry commented 6 years ago

@Chop91 please only open issues related to this library in this issue tracker.