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.

[lavande]

SigurdHi Sigurd,  Our VDD ping is connect to VCC_3.3 and cannot be controlled. What should I do to nrf_gpio_cfg of VDD PIN?

If I remove it , the screen cant light on.

The following is the sample code.

nrf_gpio_cfg(
SSD1306_CONFIG_VDD_PIN,
NRF_GPIO_PIN_DIR_OUTPUT,
NRF_GPIO_PIN_INPUT_DISCONNECT,
NRF_GPIO_PIN_NOPULL,
NRF_GPIO_PIN_H0S1,
NRF_GPIO_PIN_NOSENSE);

nrf_gpio_pin_set(SSD1306_CONFIG_VDD_PIN);

//ssd1306_init_i2c(SSD1306_CONFIG_SCL_PIN, SSD1306_CONFIG_SDA_PIN);
//ssd1306_begin(SSD1306_SWITCHCAPVCC, SSD1306_I2C_ADDRESS, false);

[Sigurd]

lavande said:

What should I do to nrf_gpio_cfg of VDD PIN?

 Use an available GPIO pin from the nRF52 as "VDD Pin". In the 3rd party driver code linked to in this case, pin 2 is used as VDD. Looking at the datasheet for SSD1306(https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf), VDD is "Power supply pin for core logic operation".