Testing out the dwo DO0180PFST05 screen with a NUCLEO-L073RZ board.
Using the STM32CubeL0 HAL and a cmake build chain so you don't need the Cube IDE.
All of this is on linux.
VBAT ------ 3.3V (supply)
VCC ------- 3.3V (supply)
IOVCC ----- 3.3V (supply)
PWR_EN ---- 3.3V
SPI_CS ---- PB1
SPI_CLK --- PB13
SIO0 ------ PB15 (MOSI)
Q-SI1 ----- PB14 (MISO)
Q_SI2 ----- x
Q_SI3 ----- x
RESET ----- PB2
TP_RESET -- 3.3V
TP_SCL ---- x
TP_SDA ---- x
TP_INT ---- x
IM1 ------- GND (SPI 3-wire)
TE -------- x
GND ------- GND
Holy moly this was annoying to figure out.
Get the stutil head from GitHub.
Build with
make release
Confirmed working with version v1.7.0-314-g40fbdb4
I can't get make install to work properly :/
- Make sure
CN2st-link debug headers are bridged. Top two and bottom two. - Connect via USB
From stutil root
./build/Release/bin/st-util
This opens a GDB server on port :4242
OR with openocd
openocd -f board/st_nucleo_l073rz.cfg
From this project root, run
arm-none-eabi-gdb ./build/stm32-blinky-l0.elf
Now in GDB
(gdb) target remote :4242
(gdb) load
It should load the elf file. Can then run normal gdb commands from there.
Notes on IM1: Datasheet says SPI 3-wire operation needs IM1=0. However, when I set IM1=0, I do not get any response from the device. With the exact same code (just normal SPI) with IM1=1, I can send cmd 0x23 to set all pixels on. However, it seems pretty sensitive to the cables, cause the screen flickers a lot.
Tried connecting with USB and running
openocd -f interface/stlink.cfg -f board/st_nucleo_l073rz.cfg
Or connecting via swd (remove jumpers on CN2, SWDIO on pin 4 (from the top) and SWCLK on pin 2)
openocd -f ./ft2232h.cfg -f target/stm32l0.cfg
The first one with stlink seems to work for me now and I have no idea why.