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making UART/USART handler weak to allow custom external handlers #3023

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making UART/USART handler weak to allow custom external handlers #3023

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4 changes: 4 additions & 0 deletions hardware/arduino/sam/variants/arduino_due_x/variant.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -306,6 +306,7 @@ void serialEvent() __attribute__((weak));
void serialEvent() { }

// IT handlers
void UART_Handler(void) __attribute__((weak));
void UART_Handler(void)
{
Serial.IrqHandler();
Expand Down Expand Up @@ -333,16 +334,19 @@ void serialEvent3() __attribute__((weak));
void serialEvent3() { }

// IT handlers
void USART0_Handler(void) __attribute__((weak));
void USART0_Handler(void)
{
Serial1.IrqHandler();
}

void USART1_Handler(void) __attribute__((weak));
void USART1_Handler(void)
{
Serial2.IrqHandler();
}

void USART3_Handler(void) __attribute__((weak));
void USART3_Handler(void)
{
Serial3.IrqHandler();
Expand Down