fpistm
commented
3 years ago Hi @ColdFireHunter Which variant you used and please test with Arduino IDE. PIO is not supported here.
Closed ColdFireHunter closed 3 years ago
fpistm
commented
3 years ago Hi @ColdFireHunter Which variant you used and please test with Arduino IDE. PIO is not supported here.
fpistm
commented
3 years ago Looking at your pin mapping, PA2 and PA3 are used for the default Serial Instance for both F103RB target (generic and nucleo)
For Nucleo F103RB: https://github.com/stm32duino/Arduino_Core_STM32/blob/c20257076fe0cde80561026c7e3aedaefd4bc95b/variants/STM32F1xx/F103R(8-B)T/variant_NUCLEO_F103RB.h#L125-L130
For Generic F103RB: https://github.com/stm32duino/Arduino_Core_STM32/blob/c20257076fe0cde80561026c7e3aedaefd4bc95b/variants/STM32F1xx/F103R(8-B)T/variant_generic.h#L160-L165
On 1.9.0, the generic F103RB defines other pins that's why it works: https://github.com/stm32duino/Arduino_Core_STM32/blob/17fd01f9ff569cc55de975da6a5742a8aab6d004/variants/Generic_F103Rx/variant.h#L122-L124
ColdFireHunter
commented
3 years ago Thanks
Hi,
Describe the bug When I connect an ST7735 LCD Module to my custom STM32F103RB Board the Display doesn't show anything. In a few very rare cases it does show the right program. (after long power off or cycling the power 10 to 20 times)
To Reproduce Use the Adafruit ST7735 LCD Libary with the Graphics Test sketch. Connections: SCLK --> PA5 MOSI --> PA7 //NORMAL SPI 1 CS --> PA4 DC --> PA2 RST --> PA3 GND --> GND VDD --> 3.3V
Standard Clock Configuration with HSI. Core Clock: 64MHz
Steps to reproduce the behavior:
Expected behavior Graphics Test Pattern on the screen
Screenshots
Desktop:
Board:
Additional context I already checked all my connections with a Multimeter there are fine. When I use different pins (RST, DC, CS) on an F103RB Nucleo (Digital 8,9,10), the Display works just fine. I also tried 4 other displays with the same Controller and none worked with these pins. In Core Version 1.9.0 everything worked fine.