pierremolinaro
commented
3 years ago Hello,
If you use an Arduino Uno, I think the bug comes from this line: canMsg_tx.id http://canmsg_tx.id/ = 0x123456;
For an Arduino Uno, the int is a 16-bit signed integer, so 0x123456 is 0x3456.
Just add the UL suffix: canMsg_tx.id http://canmsg_tx.id/ = 0x123456UL;
Best Regard,
Pierre
Le 3 janv. 2021 à 16:29, ngochoangimsat notifications@github.com a écrit :
This code can print standard can id but not ext can id `
include
CANMessage canMsg_rx; CANMessage canMsg_tx;
static const byte MCP2515_CS1 = 10 ; // CS input of MCP2515 CAN1 static const byte MCP2515_INT1 = 2 ; // INT output of MCP2515 CAN1 ACAN2515 CAN1(MCP2515_CS1, SPI, MCP2515_INT1); static const uint32_t QUARTZ_FREQUENCY = 16UL 1000UL 1000UL; // 16 MHz // // /**/
void setup() { Serial.begin (115200) ; while (!Serial) { delay (50) ; }
SPI.begin();
ACAN2515Settings settings1 (QUARTZ_FREQUENCY, 500 * 1000UL);
settings1.mTransmitBuffer0Size = 5 ; settings1.mTransmitBuffer1Size = 0 ; settings1.mTransmitBuffer2Size = 0 ; settings1.mReceiveBufferSize = 5 ; settings1.mRequestedMode = ACAN2515Settings::NormalMode; const uint16_t errorCode1 = CAN1.begin(settings1, [] {CAN1.isr();}); if (errorCode1 != 0) { Serial.print ("Configuration CAN1 error 0x") ; Serial.println (errorCode1, HEX) ; } else { Serial.println ("Configuration CAN1 OK!") ; } canMsg_tx.id = 0x123456; canMsg_tx.ext = true; }
void loop() { if (CAN1.receive(canMsg_rx)) { Serial.println(canMsg_rx.id, HEX); } if (CAN2.receive(canMsg_rx)) { Serial.println(canMsg_rx.id, HEX); } CAN1.tryToSend(canMsg_tx); delay(100); }`
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ngochoangimsat
Can you check why This code can print standard can id but not ext can id. If I receive 11 bit ID then it can receive ok but if i receive 29 bit id then the loop function never print anything. Note that in my BUS have 11 bit ID and 29Bit ID too `
include
CANMessage canMsg_rx; static const byte MCP2515_CS1 = 10 ; // CS input of MCP2515 CAN1 static const byte MCP2515_INT1 = 2 ; // INT output of MCP2515 CAN1 ACAN2515 CAN1(MCP2515_CS1, SPI, MCP2515_INT1); static const uint32_t QUARTZ_FREQUENCY = 16UL 1000UL 1000UL; // 16 MHz void setup() { Serial.begin (115200) ; while (!Serial) { delay (50) ; } SPI.begin(); ACAN2515Settings settings (QUARTZ_FREQUENCY, 500 * 1000UL); settings.mTransmitBuffer0Size = 5 ; settings.mTransmitBuffer1Size = 0 ; settings.mTransmitBuffer2Size = 0 ; settings.mReceiveBufferSize = 5 ; settings.mRequestedMode = ACAN2515Settings::NormalMode; const uint16_t errorCode1 = CAN.begin(settings, [] {CAN.isr();}); if (errorCode1 != 0) { Serial.print ("Configuration CAN error 0x") ; Serial.println (errorCode1, HEX) ; } else { Serial.println ("Configuration CAN OK!") ; } }
void loop() { if (CAN.receive(canMsg_rx)) { Serial.println(canMsg_rx.id, HEX); } }
`