Hi Robert, I suggest you to verify if all needed options for SSD1306 are met, you can compare with other boards, i.e.:
arm/rp2040/raspberrypi-pico-w/configs/ssd1306/defconfig Also you can enable the i2ctool (CONFIG_SYSTEM_I2CTOOL) to scan your I2C bus to confirm the I2C OLED address. BR, Alan On 11/9/22, Robert Alexa <robertalexa2...@gmail.com> wrote: > Hi, > > I'm trying to set up an OLED SSD1306 128x32 display with an ESP32-Wrover > board. The display module is connected through I2C and has only 4 pins > exposed: SCL, SDA, VCC, GND. > > My custom config file starts from an esp32-wrover-kit:nsh to which I added: > CONFIG_LCD=y > CONFIG_LCD_DEV=y > CONFIG_LCD_SSD1306_CUSTOM=y > CONFIG_LCD_SSD1306_CUSTOM_DEV_NATIVE_XRES=128 > CONFIG_LCD_SSD1306_CUSTOM_DEV_NATIVE_YRES=32 > CONFIG_LCD_SSD1306_CUSTOM_DEV_XOFFSET=0 > CONFIG_LCD_SSD1306_CUSTOM_DEV_PAGES=4 > CONFIG_LCD_SSD1306_CUSTOM_DEV_CMNPAD=2 > CONFIG_LCD_SSD1306=y > CONFIG_SSD1306_NUMDEVS=1 > > However, I'm encountering an issue at boot time regarding the I2C block > transfer. > ssd1306_setpower: power: 1 [0] > ssd1306_sendblk: ERROR: I2C_TRANSFER failed: -116 > board_lcd_initialize: Bound I2C0 to OLED 0 > ssd1306_setpower: power: 1 [0] > ssd1306_getplaneinfo: planeno: 0 bpp: 1 > > Interesting enough, it seems like the single transfer (ssd1306_sendbyte) is > working fine, the problem is only with the block transfer. Do you have any > ideas what might cause this? > > Regards, > Robert >
