Topics created by thom4s

OK problem found. Found out that when I selected "Blackpill F411CE" board before code compilation everything were ok. Usually I am choosing generic types so I used "F411CEUx" in case of blackpill 2 and I found out that generic types has different default "Serial" pins in ST core. Now I can confirm that Bluepill , Blackpill and F4VE board are working with MAX485. ST core v 2.4.0. ../.arduino15/packages/STMicroelectronics/hardware/stm32/2.4.0/variants/STM32F4xx/F411C(C-E)(U-Y)/variant_generic.h // UART Definitions #ifndef SERIAL_UART_INSTANCE #define SERIAL_UART_INSTANCE 2 #endif // Default pin used for generic 'Serial' instance // Mandatory for Firmata #ifndef PIN_SERIAL_RX #define PIN_SERIAL_RX PA3 #endif #ifndef PIN_SERIAL_TX #define PIN_SERIAL_TX PA2 #endif ../.arduino15/packages/STMicroelectronics/hardware/stm32/2.4.0/variants/STM32F4xx/F411C(C-E)(U-Y)/variant_BLACKPILL_F411CE.h // UART Definitions #ifndef SERIAL_UART_INSTANCE #define SERIAL_UART_INSTANCE 1 #endif // Default pin used for generic 'Serial' instance // Mandatory for Firmata #ifndef PIN_SERIAL_RX #define PIN_SERIAL_RX PA10 #endif #ifndef PIN_SERIAL_TX #define PIN_SERIAL_TX PA9 #endif So be carefull while using ST core and generic type of STM32.

@thom4s said in [SOLVED] STM32F103C8T6 bluepill clone - RFM69HW SPI port 1 and ILI9341 SPI port 2 not working together: o myself. Problem were in wrong definition of IRQ pin in sketch. But, as I found out STM32F103C8T6 has SPI 1 running on 72MHz (for SPI max 72/2 = 36MHz) and SPI 2 36MHz (for SPI max 36/2 = 18MHz) so it were a stupid idea to wire TFT display to SPI 2 port which is slower than SPI 1 with RFM69HW which doesnt need so fast SPI. Therefore I switched radio to SPI-2 and TFT display to faster SPI-1. Radio SPI-2 and TFT ILI9341 SPI-1 wiring I'm having the same problem with NRF24L01 + ILI9341. TFT is on the SPI2 , its working but NRF24L01 on SPI1 doesnt work the moment i call tft.begin. Its not hardware related. something is wrong when i initialize the spi in the Adafruit_ILI9341_STM::begin Any thoughts?