Locate defined pins in a proyect

[JuanjoAlm]

Hello mates, Im trying to run this proyect:

nrf52-spi-i2c-master-ssd1306 ( github.com/.../nrf52-spi-i2c-master-ssd1306 )

I have the display and that kit development, but I cant run the proyect cause i dont know how is the wired, where can i find the defined pins of my kit with that project?

Thanks and sorry, im newbie in this matter.

[Sigurd]

Hi,

From the main.c we have the following defines for the display:

#define SSD1306_CONFIG_VDD_PIN      2
#define SSD1306_CONFIG_CLK_PIN      23
#define SSD1306_CONFIG_MOSI_PIN     24
#define SSD1306_CONFIG_CS_PIN       22
#define SSD1306_CONFIG_DC_PIN       20
#define SSD1306_CONFIG_RST_PIN      19

#define SSD1306_CONFIG_SCL_PIN      27
#define SSD1306_CONFIG_SDA_PIN      26

[JuanjoAlm]

But I only have this pins in my display: cdn-learn.adafruit.com/guides... Then i cant see in main.c the next pins: Data, 3v3, Vin and GND. For example, I should connect CLK pin to kit's pin number 23? Thanks mate!

[Sigurd]

Depends on if you want to use I2C(TWI) or SPI. In the code you linked to i2c is used by default, and then I believe you only need to connect SCL(SSD1306_CONFIG_SCL_PIN), SDA(SSD1306_CONFIG_SDA_PIN), VDD and ground