dalathegreat / Battery-Emulator

This software enables EV battery packs to be used for stationary storage in combination with solar inverters.
GNU General Public License v3.0
1.09k stars 152 forks source link

Logging to SD card #416

Open wrightwells opened 3 months ago

wrightwells commented 3 months ago

It would be great if you could just plug in the Liliygo to the ODB port without the use of a laptop to capture the CAN Logs as it has an onboard SD card slot.

e.g. USER_SETTING.h

/* Other options */
#define LogToSD  

such as https://github.com/espressif/arduino-esp32/blob/master/libraries/SD/examples/SD_Test/SD_Test.ino

Pins for the Liliygo

you can tell my vested interest is capturing the CAN messages for the Zero motorbike rather than with a laptop in the footwell of a passenger seat. :)

So I did it, not elegant so will need a review but its working , no error handling on the size of the SD card

I've added it to this fork https://github.com/wrightwells/Battery-Emulator

---------------------------

from arduino-esp32-master copied SD libabry etc directory to Software->src->lib

in Software->src->devboard->utils created LogToSD.h LogToSD.cpp

USER_SETTINGS.h

added
//#define LogToSD //Enable this line to have the TEST_FAKE_BATTERY battery used option above to write the CAN mesages to the onboard SD card.

Updated TEST_FAKE_BATTERY.cpp added

#ifdef LogToSD
#include "../devboard/utils/LogToSD.h"
#include <FS.h>
char buffer[50];  
char msgString[4];
#endif

added to void setup_battery

#ifdef LogToSD
  setupLogToSD();
  writeFile(SD, "/FAKE_BATTERY.txt", "******************    Start of new messages        *************************");
#endif

updated receive_can_battery

void receive_can_battery(CAN_frame rx_frame) {
  datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
  // All CAN messages recieved will be logged via serial
  Serial.print(millis()); 
  Serial.print("  ");
  Serial.print(rx_frame.ID, HEX);
  Serial.print("  ");
  Serial.print(rx_frame.DLC);
  Serial.print("  ");

  #ifdef LogToSD
  String logData = String(millis()) + "  " + String(rx_frame.ID, HEX) + "  " + String(rx_frame.DLC) + "  ";
  #endif

  for (int i = 0; i < rx_frame.DLC; ++i) {
    sprintf(msgString, "%.2X", rx_frame.data.u8[i]);
    Serial.print(msgString);
    Serial.print(" ");

    #ifdef LogToSD
    logData += String(msgString) + " ";
    #endif
  }

  Serial.println("");

  Serial.println(logData); //test

  #ifdef LogToSD
  logData += "\n";
  appendFile(SD, "/FAKE_BATTERY.txt", logData.c_str());
  #endif
}
nagyrobi commented 3 months ago

+1 for this!!!!

wrightwells commented 3 months ago

didn't like it writting to the SD card constantly so I have changed the appendFile to addToBuffer . in the LogToSD.cpp it now has a buffer and flush routine with a configurable buffer size.

needs testing before a Pull Request

wrightwells commented 3 months ago

thats all now working but its wrapped up in the fork I created for the Zero Battery

wrightwells commented 3 months ago

Got a wiki ready too Write-CAN-to-SD-Card

Ted64-bot commented 3 weeks ago

Hello If I want to use this, do I have to copy and paste this into the Arduino IDE at USERSETTINGS.h and USERSETTINGS.cpp?and then flash the LyliGo again? Don't want to do anything wrong. I am new here and trying to understand. Thanks