pierremolinaro
commented
1 year ago Hello,
Unfortunatly, I was unable to reproduce the bug. What is your code ? The code I used is the following:
//------------------------------- Board Check ----------------------------------
ifndef ARDUINO_ARCH_ESP32
error "Select an ESP32 board"
endif
//------------------------------- Include files --------------------------------
include
include // For ARDUINO_ESP32_RELEASE
//—————————————————————————————————————————————————————————————————————————————— // SETUP //——————————————————————————————————————————————————————————————————————————————
void setup() { //--- Switch on builtin led pinMode (LED_BUILTIN, OUTPUT) ; digitalWrite (LED_BUILTIN, HIGH) ; //--- Start serial Serial.begin (115200) ; delay (100) ; //--- Display ESP32 Chip Info esp_chip_info_t chip_info ; esp_chip_info (&chip_info) ; Serial.print ("ESP32 Arduino Release: ") ; Serial.println (ARDUINO_ESP32_RELEASE) ; Serial.print ("ESP32 Chip Revision: ") ; Serial.println (chip_info.revision) ; Serial.print ("ESP32 SDK: ") ; Serial.println (ESP.getSdkVersion ()) ; Serial.print ("ESP32 Flash: ") ; Serial.print (spi_flash_get_chip_size () / (1024 * 1024)) ; Serial.print (" MB ") ; Serial.println (((chip_info.features & CHIP_FEATURE_EMB_FLASH) != 0) ? "(embeded)" : "(external)") ; Serial.print ("APB CLOCK: ") ; Serial.print (APB_CLK_FREQ) ; Serial.println (" Hz") ; }
//——————————————————————————————————————————————————————————————————————————————
static uint32_t gBlinkLedDate = 0 ; static const uint32_t bitRateArray [4] = { 125000, 250000, 500000, 1000000 } ; static uint32_t gBitRateIndex = 0 ; static const uint32_t MESSAGE_COUNT = 10 ;
//—————————————————————————————————————————————————————————————————————————————— // LOOP //——————————————————————————————————————————————————————————————————————————————
void loop () { if (gBlinkLedDate < millis ()) { gBlinkLedDate += 1000 ; digitalWrite (LED_BUILTIN, !digitalRead (LED_BUILTIN)) ; //--- Configure ESP32 CAN Serial.print ("Configure ESP32 CAN at ") ; Serial.print (bitRateArray [gBitRateIndex]) ; Serial.println (" bit/s") ; ACAN_ESP32_Settings settings (bitRateArray [gBitRateIndex]) ; gBitRateIndex = (gBitRateIndex + 1) % 4 ; settings.mRequestedCANMode = ACAN_ESP32_Settings::LoopBackMode ; // settings.mRxPin = GPIO_NUM_4 ; // Optional, default Tx pin is GPIO_NUM_4 // settings.mTxPin = GPIO_NUM_5 ; // Optional, default Rx pin is GPIO_NUM_5 const uint32_t errorCode = ACAN_ESP32::can.begin (settings) ; if (errorCode == 0) { Serial.print ("Bit Rate prescaler: ") ; Serial.println (settings.mBitRatePrescaler) ; Serial.print ("Time Segment 1: ") ; Serial.println (settings.mTimeSegment1) ; Serial.print ("Time Segment 2: ") ; Serial.println (settings.mTimeSegment2) ; Serial.print ("RJW: ") ; Serial.println (settings.mRJW) ; Serial.print ("Triple Sampling: ") ; Serial.println (settings.mTripleSampling ? "yes" : "no") ; Serial.print ("Actual bit rate: ") ; Serial.print (settings.actualBitRate ()) ; Serial.println (" bit/s") ; Serial.print ("Exact bit rate ? ") ; Serial.println (settings.exactBitRate () ? "yes" : "no") ; Serial.print ("Distance ") ; Serial.print (settings.ppmFromDesiredBitRate ()) ; Serial.println (" ppm") ; Serial.print ("Sample point: ") ; Serial.print (settings.samplePointFromBitStart ()) ; Serial.println ("%") ; Serial.println ("Configuration OK!"); }else { Serial.print ("Configuration error 0x") ; Serial.println (errorCode, HEX) ; } //--- Loop for sending and receiving MESSAGE_COUNT messages uint32_t sentCount = 0 ; uint32_t receiveCount = 0 ; while ((sentCount < MESSAGE_COUNT) || (receiveCount < MESSAGE_COUNT)) { if (sentCount < MESSAGE_COUNT) { CANMessage frame ; const bool ok = ACAN_ESP32::can.tryToSend (frame) ; if (ok) { sentCount += 1 ; Serial.print (" Sent ") ; Serial.println (sentCount) ; } } CANMessage frame ; while (ACAN_ESP32::can.receive (frame)) { receiveCount += 1 ; Serial.print (" Received ") ; Serial.println (receiveCount) ; } } Serial.print (" STATUS 0x") ; Serial.print (CAN_STATUS, HEX) ; Serial.print (", RXERR ") ; Serial.print (CAN_RX_ECR) ; Serial.print (", TXERR ") ; Serial.println (CAN_TX_ECR) ; } }
Le 20 juil. 2022 à 01:37, hulktech @.***> a écrit :
I have a stand alone automotive ecu with obd2 can bus protocol and i can change the baud rate speeds on the fly.In the other hand i use an esp32 with built in can bus controller to read the PID (RPM,VSS...)When i change the can bus speed on the ecu , i have an option to reinitialize the can bus speed on eps32 so it can reconnect.I just cycle in every 1sec the acan.begin with the aditional can bus speeds (128,250,500,1000) and pid request transmit. The problem is that it cannot reconnect to the bus althout i get the message "Configuration ESP32 OK!" . I think its stops transmiting the buffer. If i use acan 2515 with external controller (MCP 2515) the proble disapear and succeffully connected to the bus.The mc2515 was without interupts using 2515.poll();
Maybe the transmit buffer is over the limit? Please can you help me?
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Gcopper22
matt6626
matthew-mower
AndreaInverardi
ronzelver
I have a standalone automotive ecu with obd2 can bus protocol and i can change the baud rate speeds on the fly.In the other hand i use an esp32 with built in can bus controller to read the PID (RPM,VSS...)When i change the can bus speed on the ecu , i have an option to reinitialize the can bus speed on eps32 so it can reconnect. I just cycle in every 1sec the acan.begin with the additional can bus speeds (128,250,500,1000) and pid request transmit. The problem is that it cannot reconnect to the bus although i get message "Configuration ESP32 OK!" . I think its stops transmitting the buffer. If i use acan 2515 with external controller (MCP 2515) the problem disappear and succeffully connected to the bus.The mc2515 was without interrupts using 2515.poll();
Maybe the transmit buffer is over the limit? Please can you help me?