Update library.properties - bump to 0.2.3

Update CANSAME5x.cpp - clang format

.github/workflows/githubci.yml

@@ -7,11 +7,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/setup-python@v1
+    - uses: actions/setup-python@v4
       with:
         python-version: '3.x'
-    - uses: actions/checkout@v2
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
+    - uses: actions/checkout@v3
       with:
          repository: adafruit/ci-arduino
          path: ci

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Sandeep Mistry
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

examples/feather_m4can_neotran/feather_m4can_neotran.ino

@@ -0,0 +1,111 @@
+/*
+ * Adafruit Feather M4 CAN Transceiver Example
+ */
+
+#include <CANSAME5x.h>
+#include <Adafruit_NeoPixel.h>
+
+CANSAME5x CAN;
+
+Adafruit_NeoPixel strip(1, PIN_NEOPIXEL, NEO_GRB + NEO_KHZ800);
+
+#define MY_PACKET_ID 0xAF
+
+uint32_t timestamp;
+
+void setup() {
+  Serial.begin(115200);
+  //while (!Serial) delay(10);
+
+  Serial.println("CAN NeoPixel Potentiometer RX/TX demo");
+
+  pinMode(PIN_CAN_STANDBY, OUTPUT);
+  digitalWrite(PIN_CAN_STANDBY, false); // turn off STANDBY
+  pinMode(PIN_CAN_BOOSTEN, OUTPUT);
+  digitalWrite(PIN_CAN_BOOSTEN, true); // turn on booster
+
+  strip.begin();
+  strip.setBrightness(50);
+
+  // start the CAN bus at 250 kbps
+  if (!CAN.begin(250000)) {
+    Serial.println("Starting CAN failed!");
+    while (1) delay(10);
+  }
+
+  timestamp = millis();
+}
+
+void loop() {
+  // every 100 ms send out a packet
+  if ((millis() - timestamp) > 100) {
+    uint16_t pot = analogRead(A5);
+    // send a packet with the potentiometer value  
+    Serial.print("Sending packet with value ");
+    Serial.print(pot);
+
+    CAN.beginPacket(MY_PACKET_ID);
+    CAN.write(pot >> 8);
+    CAN.write(pot & 0xFF);
+    CAN.endPacket();
+  
+    Serial.println("...sent!");
+    timestamp = millis();
+  }
+
+  // try to parse any incoming packet
+  int packetSize = CAN.parsePacket();
+
+  if (packetSize) {
+    // received a packet
+    Serial.print("Received ");
+
+    if (CAN.packetExtended()) {
+      Serial.print("extended ");
+    }
+
+    if (CAN.packetRtr()) {
+      // Remote transmission request, packet contains no data
+      Serial.print("RTR ");
+    }
+
+    Serial.print("packet with id 0x");
+    Serial.print(CAN.packetId(), HEX);
+
+    if (CAN.packetRtr()) {
+      Serial.print(" and requested length ");
+      Serial.println(CAN.packetDlc());
+    } else {
+      Serial.print(" and length ");
+      Serial.println(packetSize);
+
+      uint8_t receivedData[packetSize];
+      for (int i=0; i<packetSize; i++) {
+        receivedData[i] = CAN.read();
+        Serial.print("0x");
+        Serial.print(receivedData[i], HEX);
+        Serial.print(", ");
+      }
+      Serial.println();
+
+      uint16_t value = (uint16_t)receivedData[0] << 8 | receivedData[1];
+      strip.setPixelColor(0, Wheel(value / 4));
+      strip.show();
+    }
+
+    Serial.println();
+  }
+}
+
+uint32_t Wheel(byte WheelPos) {
+  WheelPos = 255 - WheelPos;
+  if(WheelPos < 85) {
+    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
+  }
+  if(WheelPos < 170) {
+    WheelPos -= 85;
+    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
+  }
+  WheelPos -= 170;
+  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
+}

examples/feather_m4can_onreceive/feather_m4can_onreceive.ino

@@ -7,16 +7,17 @@
 CANSAME5x CAN;
 
 void setup() {
-  Serial.begin(9600);
-  while (!Serial);
+  Serial.begin(115200);
+  while (!Serial) delay(10);
 
   Serial.println("CAN Receiver Callback");
 
   // start the CAN bus at 250 kbps
-  if (!CAN.begin(250E3)) {
+  if (!CAN.begin(250000)) {
     Serial.println("Starting CAN failed!");
-    while (1);
+    while (1) delay(10);
   }
+  Serial.println("Starting CAN!");
 
   // register the receive callback
   CAN.onReceive(onReceive);

examples/feather_m4can_rx/feather_m4can_rx.ino

@@ -7,8 +7,8 @@
 CANSAME5x CAN;
 
 void setup() {
-  Serial.begin(9600);
-  while (!Serial);
+  Serial.begin(115200);
+  while (!Serial) delay(10);
 
   Serial.println("CAN Receiver");
 
@@ -20,8 +20,9 @@ void setup() {
   // start the CAN bus at 250 kbps
   if (!CAN.begin(250000)) {
     Serial.println("Starting CAN failed!");
-    while (1);
+    while (1) delay(10);
   }
+  Serial.println("Starting CAN!");
 }
 
 void loop() {

examples/feather_m4can_tx/feather_m4can_tx.ino

@@ -7,10 +7,11 @@
 CANSAME5x CAN;
 
 void setup() {
-  Serial.begin(9600);
-  while (!Serial);
+  Serial.begin(115200);
+  while (!Serial) delay(10);
 
   Serial.println("CAN Sender");
+
   pinMode(PIN_CAN_STANDBY, OUTPUT);
   digitalWrite(PIN_CAN_STANDBY, false); // turn off STANDBY
   pinMode(PIN_CAN_BOOSTEN, OUTPUT);
@@ -19,8 +20,9 @@ void setup() {
   // start the CAN bus at 250 kbps
   if (!CAN.begin(250000)) {
     Serial.println("Starting CAN failed!");
-    while (1);
+    while (1) delay(10);
   }
+  Serial.println("Starting CAN!");
 }
 
 void loop() {

library.properties

@@ -1,5 +1,5 @@
 name=Adafruit CAN
-version=0.2.0
+version=0.2.3
 author=Adafruit
 maintainer=Adafruit <info@adafruit.com>
 sentence=Arduino library for native CAN.

src/CANController.cpp

@@ -1,38 +1,28 @@
+// Forked from:
 // Copyright (c) Sandeep Mistry. All rights reserved.
-// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// Licensed under the MIT license. See LICENSE file in the project root for full
+// license information.
 
 #include "CANController.h"
 
-CANControllerClass::CANControllerClass() :
-  _onReceive(NULL),
+CANControllerClass::CANControllerClass()
+    : _onReceive(NULL),
 
-  _packetBegun(false),
-  _txId(-1),
-  _txExtended(-1),
-  _txRtr(false),
-  _txDlc(0),
-  _txLength(0),
+      _packetBegun(false), _txId(-1), _txExtended(-1), _txRtr(false), _txDlc(0),
+      _txLength(0),
 
-  _rxId(-1),
-  _rxExtended(false),
-  _rxRtr(false),
-  _rxDlc(0),
-  _rxLength(0),
-  _rxIndex(0)
-{
+      _rxId(-1), _rxExtended(false), _rxRtr(false), _rxDlc(0), _rxLength(0),
+      _rxIndex(0) {
   // overide Stream timeout value
   setTimeout(0);
 }
 
-CANControllerClass::~CANControllerClass()
-{
-}
+CANControllerClass::~CANControllerClass() {}
 
-int CANControllerClass::begin(long /*baudRate*/)
-{
+int CANControllerClass::begin(long /*baudRate*/) {
   _packetBegun = false;
   _txId = -1;
-  _txRtr =false;
+  _txRtr = false;
   _txDlc = 0;
   _txLength = 0;
 
@@ -45,12 +35,9 @@ int CANControllerClass::begin(long /*baudRate*/)
   return 1;
 }
 
-void CANControllerClass::end()
-{
-}
+void CANControllerClass::end() {}
 
-int CANControllerClass::beginPacket(int id, int dlc, bool rtr)
-{
+int CANControllerClass::beginPacket(int id, int dlc, bool rtr) {
   if (id < 0 || id > 0x7FF) {
     return 0;
   }
@@ -71,8 +58,7 @@ int CANControllerClass::beginPacket(int id, int dlc, bool rtr)
   return 1;
 }
 
-int CANControllerClass::beginExtendedPacket(long id, int dlc, bool rtr)
-{
+int CANControllerClass::beginExtendedPacket(long id, int dlc, bool rtr) {
   if (id < 0 || id > 0x1FFFFFFF) {
     return 0;
   }
@@ -93,8 +79,7 @@ int CANControllerClass::beginExtendedPacket(long id, int dlc, bool rtr)
   return 1;
 }
 
-int CANControllerClass::endPacket()
-{
+int CANControllerClass::endPacket() {
   if (!_packetBegun) {
     return 0;
   }
@@ -107,38 +92,21 @@ int CANControllerClass::endPacket()
   return 1;
 }
 
-int CANControllerClass::parsePacket()
-{
-  return 0;
-}
+int CANControllerClass::parsePacket() { return 0; }
 
-long CANControllerClass::packetId()
-{
-  return _rxId;
-}
+long CANControllerClass::packetId() { return _rxId; }
 
-bool CANControllerClass::packetExtended()
-{
-  return _rxExtended;
-}
+bool CANControllerClass::packetExtended() { return _rxExtended; }
 
-bool CANControllerClass::packetRtr()
-{
-  return _rxRtr;
-}
+bool CANControllerClass::packetRtr() { return _rxRtr; }
 
-int CANControllerClass::packetDlc()
-{
-  return _rxDlc;
-}
+int CANControllerClass::packetDlc() { return _rxDlc; }
 
-size_t CANControllerClass::write(uint8_t byte)
-{
+size_t CANControllerClass::write(uint8_t byte) {
   return write(&byte, sizeof(byte));
 }
 
-size_t CANControllerClass::write(const uint8_t *buffer, size_t size)
-{
+size_t CANControllerClass::write(const uint8_t *buffer, size_t size) {
   if (!_packetBegun) {
     return 0;
   }
@@ -153,13 +121,9 @@ size_t CANControllerClass::write(const uint8_t *buffer, size_t size)
   return size;
 }
 
-int CANControllerClass::available()
-{
-  return (_rxLength - _rxIndex);
-}
+int CANControllerClass::available() { return (_rxLength - _rxIndex); }
 
-int CANControllerClass::read()
-{
+int CANControllerClass::read() {
   if (!available()) {
     return -1;
   }
@@ -167,8 +131,7 @@ int CANControllerClass::read()
   return _rxData[_rxIndex++];
 }
 
-int CANControllerClass::peek()
-{
+int CANControllerClass::peek() {
   if (!available()) {
     return -1;
   }
@@ -176,41 +139,20 @@ int CANControllerClass::peek()
   return _rxData[_rxIndex];
 }
 
-void CANControllerClass::flush()
-{
-}
+void CANControllerClass::flush() {}
 
-void CANControllerClass::onReceive(void(*callback)(int))
-{
+void CANControllerClass::onReceive(void (*callback)(int)) {
   _onReceive = callback;
 }
 
-int CANControllerClass::filter(int /*id*/, int /*mask*/)
-{
-  return 0;
-}
+int CANControllerClass::filter(int /*id*/, int /*mask*/) { return 0; }
 
-int CANControllerClass::filterExtended(long /*id*/, long /*mask*/)
-{
-  return 0;
-}
+int CANControllerClass::filterExtended(long /*id*/, long /*mask*/) { return 0; }
 
-int CANControllerClass::observe()
-{
-  return 0;
-}
+int CANControllerClass::observe() { return 0; }
 
-int CANControllerClass::loopback()
-{
-  return 0;
-}
+int CANControllerClass::loopback() { return 0; }
 
-int CANControllerClass::sleep()
-{
-  return 0;
-}
+int CANControllerClass::sleep() { return 0; }
 
-int CANControllerClass::wakeup()
-{
-  return 0;
-}
+int CANControllerClass::wakeup() { return 0; }

src/CANController.h

@@ -1,5 +1,7 @@
+// Forked from:
 // Copyright (c) Sandeep Mistry. All rights reserved.
-// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+// Licensed under the MIT license. See LICENSE file in the project root for full
+// license information.
 
 #ifndef CAN_CONTROLLER_H
 #define CAN_CONTROLLER_H
@@ -32,7 +34,7 @@ public:
   virtual int peek();
   virtual void flush();
 
-  virtual void onReceive(void(*callback)(int));
+  virtual void onReceive(void (*callback)(int));
 
   virtual int filter(int id) { return filter(id, 0x7ff); }
   virtual int filter(int id, int mask);

src/CANSAME5x.cpp

@@ -27,7 +27,7 @@ namespace {
 #define state (reinterpret_cast<_canSAME5x_state *>(this->_state))
 
 #define DIV_ROUND(a, b) (((a) + (b) / 2) / (b))
-#define DIV_ROUND_UP(a, b) (((a) + (b)-1) / (b))
+#define DIV_ROUND_UP(a, b) (((a) + (b) - 1) / (b))
 
 #define GCLK_CAN1 GCLK_PCHCTRL_GEN_GCLK1_Val
 #define GCLK_CAN0 GCLK_PCHCTRL_GEN_GCLK1_Val

src/CANSAME5x.h

@@ -2,6 +2,9 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full
 // license information.
 
+#ifndef CANSAME5x_H
+#define CANSAME5x_H
+
 #include "CANController.h"
 
 class CANSAME5x : public CANControllerClass {
@@ -51,3 +54,5 @@ private:
   friend void CAN0_Handler(void);
   friend void CAN1_Handler(void);
 };
+
+#endif