mattg

Can someone please point me in the direction of a tutorial for reading UART from an arduino? Or perhaps point out where I might be going wrong. I am trying to output a string from TX on the arduino (MKRZERO) and receive it on the analog discovery 2 (AD2). I am using Digital I/O pin 0 on the AD2 that is connected to the arduino TX pin, and I assume I must also connect the AD2 ground to the arduino ground pin? arduino code here: #include <Arduino.h> // required before wiring_private.h #include "wiring_private.h" // pinPeripheral() function Uart Serial2 (&sercom2, 3, 4, SERCOM_RX_PAD_1, UART_TX_PAD_0); void SERCOM2_Handler() { Serial2.IrqHandler(); } void setup() { Serial.begin(115200); Serial2.begin(115200); // Assign pins 3 & 4 SERCOM functionality pinPeripheral(3, PIO_SERCOM_ALT); pinPeripheral(4, PIO_SERCOM_ALT); } uint8_t i=0; void loop() { Serial.print(i); Serial2.write(i++); if (Serial2.available()) { Serial.print(" -> 0x"); Serial.print(Serial2.read(), HEX); } Serial.println(); delay(500); }