STM32F103C8 using SPI2

[hamo]

Hello,

i am trying to interface 1.8 inch SPI TFT Display 128 x 160 to the STM32F103C8 using SPI2.

https://www.az-delivery.de/products/1-8-zoll-spi-tft-display

SPI1 is used for LoRa, i thought to connect TFT too to SPI1 using addresses but i am affraid to influence the

LoRa.

The library which i am using is from this website:
https://controllerstech.com/st7735-1-8-tft-display-with-stm32/

A year earlier i tried to interface LoRa to STM32F103C8 using SPI2 but without success.

Is it a general problem in STM32F103C8 using SPI2?

Any help is appreciated.

[xisco]

There are few options left to try...

Radio interference? Try to shut down LoRa until display works

Try to shorten or shield display cables

[hamo]

I am interfacing only the display right now.

There is no LoRa now.

Display cables are max 7cm.

[hamo]

@xisco 

In the initialize function of the display:

it tries to send command -> HAL_SPI_Transmit() -> checks for TXE flag -> not set -> timeout.

This dicplay works perfeclty on SPI1.

@AScha.3 

I checked often for wrong pins -> NO, i am using the right pins.

I think it is a settings problem, why?

There is no clock at all.

CS -> is set low -> works.

[xisco]

I'm sorry but I can't help you.

Maybe a previous project has damaged your boards...

I don't have more ideas to try 🙁

[hamo]

I have tried many borads -> no success

[hamo · Accepted solution]

The problem was with the hardware.
Finally i could get the SPI2 work together with SPI1 on the same Board.
Many Bluepills are just not good this days.

Anyway thank you all for being helpful.

Best regards

Mohamad