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Version 2.1.5, Fixed retransmission attempts setting bug, Added NoRet…
…ransmissionAttemptsDemoTeensy3x.ino sketch.
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examples/NoRetransmissionAttemptsDemoTeensy3x/NoRetransmissionAttemptsDemoTeensy3x.ino
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| //—————————————————————————————————————————————————————————————————————————————— | ||
| // ACAN2517FD Demo for "ThreeAttempts" and "Disabled" setting, | ||
| // using hardware SPI1, with an external interrupt | ||
| // For this sketch, the MCP2517FD should be alone on the CAN bus. | ||
| // | ||
| // A CAN message should be acknowledged by a receiver. | ||
| // By default, no receiver -> no acknnowledge, the message is sent indefinitely | ||
| // The settings.mControllerTransmitFIFORetransmissionAttempts can be used for | ||
| // specifying: | ||
| // - only one attempt (ACAN2517Settings::Disabled); | ||
| // - three attempts (ACAN2517Settings::ThreeAttempts); | ||
| // - unlimited number of attempts (ACAN2517Settings::Unlimited, default setting). | ||
| //—————————————————————————————————————————————————————————————————————————————— | ||
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| #include <ACAN2517FD.h> | ||
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| //—————————————————————————————————————————————————————————————————————————————— | ||
| // MCP2517 connections: adapt theses settings to your design | ||
| // As hardware SPI is used, you should select pins that support SPI functions. | ||
| // This sketch is designed for a Teensy 3.5, using SPI1 | ||
| // But standard Teensy 3.5 SPI1 pins are not used | ||
| // SCK input of MCP2517 is connected to pin #32 | ||
| // SDI input of MCP2517 is connected to pin #0 | ||
| // SDO output of MCP2517 is connected to pin #1 | ||
| // CS input of MCP2517 should be connected to a digital output port | ||
| // INT output of MCP2517 should be connected to a digital input port, with interrupt capability | ||
| //—————————————————————————————————————————————————————————————————————————————— | ||
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| static const byte MCP2517_SCK = 32 ; // SCK input of MCP2517 | ||
| static const byte MCP2517_SDI = 0 ; // SDI input of MCP2517 | ||
| static const byte MCP2517_SDO = 1 ; // SDO output of MCP2517 | ||
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| static const byte MCP2517_CS = 31 ; // CS input of MCP2517 | ||
| static const byte MCP2517_INT = 38 ; // INT output of MCP2517 | ||
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| //—————————————————————————————————————————————————————————————————————————————— | ||
| // MCP2517 Driver object | ||
| //—————————————————————————————————————————————————————————————————————————————— | ||
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| ACAN2517FD can (MCP2517_CS, SPI1, MCP2517_INT) ; | ||
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| //—————————————————————————————————————————————————————————————————————————————— | ||
| // SETUP | ||
| //—————————————————————————————————————————————————————————————————————————————— | ||
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| void setup () { | ||
| //--- Switch on builtin led | ||
| pinMode (LED_BUILTIN, OUTPUT) ; | ||
| digitalWrite (LED_BUILTIN, HIGH) ; | ||
| //--- Start serial | ||
| Serial.begin (38400) ; | ||
| //--- Wait for serial (blink led at 10 Hz during waiting) | ||
| while (!Serial) { | ||
| delay (50) ; | ||
| digitalWrite (LED_BUILTIN, !digitalRead (LED_BUILTIN)) ; | ||
| } | ||
| //--- Define alternate pins for SPI1 (see https://www.pjrc.com/teensy/td_libs_SPI.html) | ||
| Serial.print ("Using pin #") ; | ||
| Serial.print (MCP2517_SDI) ; | ||
| Serial.print (" for MOSI: ") ; | ||
| Serial.println (SPI1.pinIsMOSI (MCP2517_SDI) ? "yes" : "NO!!!") ; | ||
| Serial.print ("Using pin #") ; | ||
| Serial.print (MCP2517_SDO) ; | ||
| Serial.print (" for MISO: ") ; | ||
| Serial.println (SPI1.pinIsMISO (MCP2517_SDO) ? "yes" : "NO!!!") ; | ||
| Serial.print ("Using pin #") ; | ||
| Serial.print (MCP2517_SCK) ; | ||
| Serial.print (" for SCK: ") ; | ||
| Serial.println (SPI1.pinIsSCK (MCP2517_SCK) ? "yes" : "NO!!!") ; | ||
| SPI1.setMOSI (MCP2517_SDI) ; | ||
| SPI1.setMISO (MCP2517_SDO) ; | ||
| SPI1.setSCK (MCP2517_SCK) ; | ||
| //----------------------------------- Begin SPI1 | ||
| SPI1.begin () ; | ||
| //--- Configure ACAN2517 | ||
| Serial.print ("sizeof (ACAN2517Settings): ") ; | ||
| Serial.print (sizeof (ACAN2517FDSettings)) ; | ||
| Serial.println (" bytes") ; | ||
| Serial.println ("Configure ACAN2517") ; | ||
| ACAN2517FDSettings settings (ACAN2517FDSettings::OSC_4MHz10xPLL, 125 * 1000, DataBitRateFactor::x4) ; | ||
| //--- The MCP2517FD internal RAM is limited, the size of the receive buffer is reduced | ||
| settings.mControllerReceiveFIFOSize = 2 ; | ||
| //--- Configure regular transmit chain (used when message.idx == 0, default) | ||
| settings.mDriverTransmitFIFOSize = 0 ; | ||
| settings.mControllerTransmitFIFOSize = 1 ; | ||
| settings.mControllerTransmitFIFORetransmissionAttempts = ACAN2517FDSettings::Disabled ; | ||
| //--- Configure TXQ transmit chain (used when message.idx == 255) | ||
| settings.mControllerTXQSize = 1 ; | ||
| settings.mControllerTXQBufferRetransmissionAttempts = ACAN2517FDSettings::Disabled ; | ||
| const uint32_t errorCode = can.begin (settings, [] { can.isr () ; }) ; | ||
| if (errorCode == 0) { | ||
| Serial.print ("Bit Rate prescaler: ") ; | ||
| Serial.println (settings.mBitRatePrescaler) ; | ||
| Serial.print ("Arbitration Phase segment 1: ") ; | ||
| Serial.println (settings.mArbitrationPhaseSegment1) ; | ||
| Serial.print ("Arbitration Phase segment 2: ") ; | ||
| Serial.println (settings.mArbitrationPhaseSegment2) ; | ||
| Serial.print ("Arbitration SJW:") ; | ||
| Serial.println (settings.mArbitrationSJW) ; | ||
| Serial.print ("Actual Arbitration Bit Rate: ") ; | ||
| Serial.print (settings.actualArbitrationBitRate ()) ; | ||
| Serial.println (" bit/s") ; | ||
| Serial.print ("Exact Arbitration Bit Rate ? ") ; | ||
| Serial.println (settings.exactArbitrationBitRate () ? "yes" : "no") ; | ||
| Serial.print ("Arbitration Sample point: ") ; | ||
| Serial.print (settings.arbitrationSamplePointFromBitStart ()) ; | ||
| Serial.println ("%") ; | ||
| Serial.print ("Data Phase segment 1: ") ; | ||
| Serial.println (settings.mDataPhaseSegment1) ; | ||
| Serial.print ("Data Phase segment 2: ") ; | ||
| Serial.println (settings.mDataPhaseSegment2) ; | ||
| Serial.print ("Data SJW:") ; | ||
| Serial.println (settings.mDataSJW) ; | ||
| }else{ | ||
| Serial.print ("Configuration error 0x") ; | ||
| Serial.println (errorCode, HEX) ; | ||
| } | ||
| } | ||
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| //---------------------------------------------------------------------------------------------------------------------- | ||
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| static uint32_t gBlinkLedDate = 1000 ; | ||
| static uint32_t gReceivedFrameCount = 0 ; | ||
| static uint32_t gSentFrameCount = 0 ; | ||
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| //—————————————————————————————————————————————————————————————————————————————— | ||
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| void loop() { | ||
| CANFDMessage frame ; | ||
| if (gBlinkLedDate < millis ()) { | ||
| gBlinkLedDate += 500 ; | ||
| digitalWrite (LED_BUILTIN, !digitalRead (LED_BUILTIN)) ; | ||
| frame.len = 64 ; | ||
| for (uint8_t i=0 ; i<frame.len ; i++) { | ||
| frame.data [i] = i ; | ||
| } | ||
| // frame.idx = 255 ; // Uncomment this for sending throught TXQ | ||
| const bool ok = can.tryToSend (frame) ; | ||
| if (ok) { | ||
| gSentFrameCount += 1 ; | ||
| Serial.print ("Sent: ") ; | ||
| Serial.println (gSentFrameCount) ; | ||
| }else{ | ||
| Serial.println ("Send failure") ; | ||
| } | ||
| } | ||
| if (can.available ()) { | ||
| can.receive (frame) ; | ||
| gReceivedFrameCount ++ ; | ||
| Serial.print ("Received: ") ; | ||
| Serial.println (gReceivedFrameCount) ; | ||
| } | ||
| } | ||
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| //—————————————————————————————————————————————————————————————————————————————— |
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,5 +1,5 @@ | ||
| name=ACAN2517FD | ||
| version=2.1.4 | ||
| version=2.1.5 | ||
| author=Pierre Molinaro | ||
| maintainer=Pierre Molinaro <[email protected]> | ||
| sentence=Driver for MCP2517FD and MCP2518FD CAN Controller (CAN FD mode) | ||
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