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Fix: CAN(0) RX/TX pins have moved on final version of Uno R4 WiFi.
Instead of pins 4 and 5 its now pins 10 and 13 for CAN0_RX and CAN0_TX.
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variants/UNOWIFIR4/pins_arduino.h

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Original file line numberDiff line numberDiff line change
@@ -129,8 +129,8 @@ static const uint8_t SS = PIN_SPI_CS;
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#define CAN_HOWMANY 1
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132-
#define PIN_CAN0_TX (4)
133-
#define PIN_CAN0_RX (5)
132+
#define PIN_CAN0_TX (10)
133+
#define PIN_CAN0_RX (13)
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#define PIN_CAN0_STBY (-1)
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#define EXT_INTERRUPTS_HOWMANY 2

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