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
