Arduino for STM32

yes, that's why it doesn't work with the current version of the core you used. in fact the core remap to the pin 22/23.
So simply comment the code as mentioned in the GH issue and no remap will be done.


thank you,
now I want to use spi,
I give 0xFF when want to read a register, I have checked ...

done,
thank you!

Ahah! I've just remember why it does not work with USART1. ;)
This is linked to the pin used: PA9/PA10.
On G0 those pins could be remapped on PA11/PA12.

https://github.com/stm32duino/Arduino_Core_STM32/issues/1180

This will be fixed in the next core release. As a workaround, simply comments the ...

SERIAL_UART_INSTANCE is the number of the USART instance. In that case USART1.
The Serial naming is explained in the Wiki:
https://github.com/stm32duino/wiki/wiki/API#hardwareserial

The STM32 MCU's have several U(S)ART peripherals. By convenience, the U(S)ARTx number is used to define the ...

See the wiki😉

I have enabled uarts by HAL_UART_MODULE_ENABLED macro and use Serial.begin(115200) to use uart1, but I haven't anything on uart1_tx
for test I have commented usart1 pins in variant.h and periphaeralpins.h files, but arduino IDE doesn't get error and compile successfully!

part of ...

I have seen and do anything said in wiki, I can program blink and it works.

I don't what is SERIAL_UART_INSTANCE meaning?
how can I use other uarts?

you can find the attached image,
I put uart1 pins for tx and rx, as I set them in peripheralPins.h file.

Hi there,
I have created new variant for stm32g070kb chip and I have checked the blink test and it's working find.
I wanted to test the communications like uart, as a default interface called Serial.
but I don't see anything on Uart1 tx pin, and software serial is not working at all.
which parts ...