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STM32G071RB STM32G070RB uart4 is not invalid #1360

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@MINI-Qiang

Description

@MINI-Qiang

Describe the bug
STM32G071RB STM32G070RB UART4 invalid
uart1,uart2,uart3 normally

To Reproduce
Test board: Nucleo-G071RB

//HardwareSerial Serial4(PA1,PA0);      // GPIO_AF4_USART4
HardwareSerial Serial4(PC11,PC10);     // GPIO_AF1_USART4
void setup()
{
  Serial4.begin(115200);
}
void loop()
{
  Serial4.println("test");
  delay(1000);
}

Steps to reproduce the behavior:

  1. Plug
  2. Oscilloscope measurement PA0, PC10 output,(Output HIGH, no signal)

Expected behavior

Screenshots
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Desktop (please complete the following information):

  • OS: [Windows10]
  • Arduino IDE version: [1.8.12]
  • STM32 core version: [1.9.0]
  • Tools menu settings : nucleo64, NucleoG071RB , default....
  • Upload method: [STLink]

Board (please complete the following information):

  • Name: [e.g. Nucleo G071RB]

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