Modified put the receive interrupt before begin

Author: wangcoolc

examples/receive_interrupt/receive_interrupt.ino

@@ -42,6 +42,7 @@ void setup() {
     while (!SERIAL) {
         ; // wait for serial port to connect. Needed for native USB port only
     }
+    attachInterrupt(digitalPinToInterrupt(CAN_INT_PIN), MCP2515_ISR, FALLING); // start interrupt
 #ifdef CAN_2518FD
     while (0 != CAN.begin((byte)CAN_500K_1M)) {            // init can bus : baudrate = 500k
 #else
@@ -52,8 +53,8 @@ void setup() {
         delay(100);
     }
     SERIAL.println("CAN BUS Shield init ok!");
-    pinMode(CAN_INT_PIN, INPUT);
-    attachInterrupt(digitalPinToInterrupt(CAN_INT_PIN), MCP2515_ISR, FALLING); // start interrupt
+    delay(100);
+    
 }
 
 void MCP2515_ISR() {

examples/receive_interruptFD/receive_interruptFD.ino

@@ -33,6 +33,7 @@ void setup() {
     while (!SERIAL) {
         ; // wait for serial port to connect. Needed for native USB port only
     }
+    attachInterrupt(digitalPinToInterrupt(CAN_INT_PIN), MCP2515_ISR, FALLING); // start interrupt
     CAN.setMode(0);
     while (0 != CAN.begin((byte)CAN_500K_1M)) {            // init can bus : baudrate = 500k    
         SERIAL.println("CAN BUS Shield init fail");
@@ -43,8 +44,6 @@ void setup() {
     SERIAL.printf("CAN BUS get mode = %d\n\r",mode);
     SERIAL.println("CAN BUS Shield init ok!");
     SERIAL.println("CAN BUS Shield init ok!");
-    pinMode(CAN_INT_PIN, INPUT);
-    attachInterrupt(digitalPinToInterrupt(CAN_INT_PIN), MCP2515_ISR, FALLING); // start interrupt
 }
 
 void MCP2515_ISR() {

examples/recv_sd/recv_sd.ino

@@ -42,7 +42,7 @@ char str[20];
 
 void setup() {
     SERIAL.begin(115200);
-
+    attachInterrupt(digitalPinToInterrupt(CAN_INT_PIN), MCP2515_ISR, FALLING); // start interrupt
 #ifdef CAN_2518FD
     while (0 != CAN.begin((byte)CAN_500K_1M)) {            // init can bus : baudrate = 500k
 #else
@@ -53,9 +53,7 @@ void setup() {
         delay(100);
     }
     SERIAL.println("CAN BUS Shield init ok!");
-
-    attachInterrupt(0, MCP2515_ISR, FALLING); // start interrupt
-
+    
     if (!SD.begin(4)) {
         SERIAL.println("SD initialization failed!");
         while (1);

examples/set_mask_filter_recv/set_mask_filter_recv.ino

@@ -38,7 +38,7 @@ char str[20];
 void setup() {
     SERIAL.begin(115200);
     while(!Serial){};
-    
+    attachInterrupt(digitalPinToInterrupt(interruptPin), MCP2515_ISR, FALLING); // start interrupt
 #ifdef CAN_2518FD
     while (0 != CAN.begin((byte)CAN_500K_1M)) {            // init can bus : baudrate = 500k
 #else
@@ -50,9 +50,6 @@ void setup() {
     }
     SERIAL.println("CAN BUS Shield init ok!");
 
-    attachInterrupt(digitalPinToInterrupt(interruptPin), MCP2515_ISR, FALLING); // start interrupt
-
-
     /*
         set mask, set both the mask to 0x3ff
     */