Hi, i was interfacing oled with nrf52 board. I got some example and modified bit to use it with GCC. But it is now working. Oled not at all starting. oled is 0.96 inch, I2C based 128x64. Vdd = 5v sda = p0.26 scl = p0.27
Here is code github.com/.../
Hi, i was interfacing oled with nrf52 board. I got some example and modified bit to use it with GCC. But it is now working. Oled not at all starting. oled is 0.96 inch, I2C based 128x64. Vdd = 5v sda = p0.26 scl = p0.27
Here is code github.com/.../
Hi,
The problem seems to be that you are using the TWI driver in non-blocking mode, but you do not have any mechanism implemented to make sure that the previous transfer is done before starting a new transfer. If you check the return code of your calls to nrf_drv_twi_tx()
in ssd1306_command()
, you will see that you get a lot of error code 0x11 - NRF_ERROR_BUSY. This leads to that the commands is not sent to the OLED.
A simple fix to this problem is to switch to blocking mode for the TWI instance. This is done by passing NULL
to event_handler argument of nrf_drv_twi_init()
.
Best regards,
Jørgen
I checked with blocking mode, but it didn't work for me. Do i have to change jumper anywhere? I checked voltage and its proper, but like other lcd's which glow backlight, but with oled backlight is not coming. Do we have any example to refer?
I checked with blocking mode, but it didn't work for me. Do i have to change jumper anywhere? I checked voltage and its proper, but like other lcd's which glow backlight, but with oled backlight is not coming. Do we have any example to refer?