Wio Terminal Grove UART

grove_left_uart.ino

#include <wiring_private.h>

static Uart Serial3(&sercom3, PIN_WIRE_SCL, PIN_WIRE_SDA, SERCOM_RX_PAD_1, UART_TX_PAD_0);

void setup() {
    Serial.begin(115200);
    while(!Serial);

    Serial3.begin(115200);
    pinPeripheral(PIN_WIRE_SCL, PIO_SERCOM_ALT);
    pinPeripheral(PIN_WIRE_SDA, PIO_SERCOM_ALT);
}

void loop() {
    Serial3.println("test");
    delay(1000);
}


void SERCOM3_0_Handler()
{
  Serial3.IrqHandler();
}
void SERCOM3_1_Handler()
{
  Serial3.IrqHandler();
}
void SERCOM3_2_Handler()
{
  Serial3.IrqHandler();
}
void SERCOM3_3_Handler()
{
  Serial3.IrqHandler();
}

grove_right_uart.ino

#include <wiring_private.h>

// GROVE right port
// This disables internal I2C port, which is connected to internal 3-axis accelerometer
static Uart Serial3(&sercom4, D1, D0, SERCOM_RX_PAD_1, UART_TX_PAD_0);

void setup() {
    Serial.begin(115200);
    while(!Serial);

    Serial3.begin(115200);
    pinPeripheral(D0, PIO_SERCOM_ALT);
    pinPeripheral(D1, PIO_SERCOM_ALT);
}
void loop() {
    Serial3.println("test");
    delay(1000);
}


void SERCOM4_0_Handler()
{
  Serial3.IrqHandler();
}
void SERCOM4_1_Handler()
{
  Serial3.IrqHandler();
}
void SERCOM4_2_Handler()
{
  Serial3.IrqHandler();
}
void SERCOM4_3_Handler()
{
  Serial3.IrqHandler();
}

I am desperately trying to find a way to create _serial and also set the IRQ handlers inside a class.

Something like this:

SERCOM4_0_Handler = &(_serial.IrqHandler);

I should absolutely be able to set a function pointer to pointer if the handler is a function pointer. But this doesn't work.

So now I'm stuck implementing a global event handler just to deal with these IRQs inside a class. It's wildly inefficient.

I just came across your comments here and thought I would ask if anyone knows a way.