Add support for the SAMD family!

Author: arduino12

README.md

@@ -6,6 +6,7 @@ A simple library to interface with RDM6300 RFID reader.
 * Using a single configurable GPIO pin.
 * Can tell if the tag is still near the antenna.
 * Both hardware and software uart (serial) support on esp8266.
+* SAMD hardware uart (serial) support.
 * Both SoftwareSerial and [AltSoftSerial](https://github.com/PaulStoffregen/AltSoftSerial) support.
 
 ## Getting Started

examples/read_to_serial/read_to_serial.ino

@@ -4,6 +4,8 @@
  * Connect the rdm6300 to VCC=5V, GND=GND, TX=any GPIO (this case GPIO-04)
  * Note that the rdm6300's TX line is 3.3V level,
  * so it's safe to use with both AVR* and ESP* microcontrollers.
+ * Note that on SAMD the RX_PIN is ignored, the default is Serial1 (pin0),
+ * but if specify rdm6300.begin(RDM6300_RX_PIN, 2); then Serial2 (pin30) is used.
  *
  * This example uses SoftwareSerial, please read its limitations here:
  * https://www.arduino.cc/en/Reference/softwareSerial

library.json

@@ -1,6 +1,6 @@
 {
   "name": "rdm6300",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "keywords": "rdm6300, rfid",
   "description": "A simple library to interface with rdm6300 rfid reader.",
   "repository":

library.properties

@@ -1,5 +1,5 @@
 name=Rdm6300
-version=1.2.0
+version=1.3.0
 author=Arad Eizen
 maintainer=Arad Eizen <https://github.com/arduino12>
 sentence=A simple library to interface with rdm6300 rfid reader.

src/rdm6300.cpp

@@ -29,6 +29,9 @@ void Rdm6300::begin(int rx_pin, uint8_t uart_nr)
 		if (uart_nr)
 			_hardware_serial->swap();
 	}
+#elif defined(ARDUINO_ARCH_SAMD)
+	_stream = _hardware_serial = (uart_nr == 2 ? &Serial2 : &Serial1);
+	_hardware_serial->begin(RDM6300_BAUDRATE, SERIAL_8N1);
 #endif
 #ifdef RDM6300_SOFTWARE_SERIAL
 	if (!_stream) {

src/rdm6300.h

@@ -7,16 +7,22 @@
 #ifndef _RDM6300_h_
 #define _RDM6300_h_
 
-#if defined(ARDUINO_ARCH_ESP32) || defined(ARDUINO_ARCH_ESP8266)
+#if defined(ARDUINO_ARCH_ESP32) || defined(ARDUINO_ARCH_ESP8266) || defined(ARDUINO_ARCH_SAMD)
 	#define RDM6300_HARDWARE_SERIAL
 #endif
 
-#if !defined(ARDUINO_ARCH_ESP32)
+#if !(defined(ARDUINO_ARCH_ESP32) || defined(ARDUINO_ARCH_SAMD))
 	#define RDM6300_SOFTWARE_SERIAL
 #endif
 
 #ifdef RDM6300_HARDWARE_SERIAL
-	#include <HardwareSerial.h>
+	#ifdef ARDUINO_ARCH_SAMD
+		#include <Uart.h>
+		#define HardwareSerial_t Uart
+	#else
+		#include <HardwareSerial.h>
+		#define HardwareSerial_t HardwareSerial
+	#endif
 #endif
 #ifdef RDM6300_SOFTWARE_SERIAL
 	#include <SoftwareSerial.h>
@@ -46,7 +52,7 @@ class Rdm6300
 #endif
 	private:
 #ifdef RDM6300_HARDWARE_SERIAL
-		HardwareSerial *_hardware_serial = NULL;
+		HardwareSerial_t *_hardware_serial = NULL;
 #endif
 #ifdef RDM6300_SOFTWARE_SERIAL
 		SoftwareSerial *_software_serial = NULL;