Hey there,
Hoping someone could point me to a PCB that is using a Blackpill and a ST7789V OLED display. I have the above and am not 100% on which pins to wire up. GND is obvious. VCC I’m pointing to 3.3V, then there is:
- CS
- DC
- Reset
- SDA
- SCL
The smaller screens only have SDA & SCL. Can anyone confirm whether the others are optional, mandatory, whether there are specific/preferred pins?
I’m feeling a little lost at the moment, so hoping for some guidance.
FYI this is the specific display: here
SDA/SCL pair is probably i2c, CS chip-select? But that would be more appropriate for spi.
DC is probably to switch the display controller between command and data modes. So you will have to connect that to a gpio on your blue pill to let software switch between data/command.
Alrighty… Big fat S P I on the back of the PCB (: facepalm:). So SDA/SCL is data and clock for the spi-bus. Hth.
So basically ‘don’t worry about it, just put any pin to any pin and manage it through QMK?’
