From c0f2cedf3a80fa284306119fb06f8763793b656d Mon Sep 17 00:00:00 2001 From: sascha-hemi Date: Fri, 19 Apr 2024 00:20:15 +0200 Subject: [PATCH] Initial Commit --- arduino/.gitignore | 5 ++ arduino/.vscode/extensions.json | 10 +++ arduino/.vscode/settings.json | 3 + arduino/include/README | 39 +++++++++++ arduino/lib/README | 46 +++++++++++++ arduino/platformio.ini | 16 +++++ arduino/src/main.cpp | 112 ++++++++++++++++++++++++++++++++ arduino/test/README | 11 ++++ 8 files changed, 242 insertions(+) create mode 100644 arduino/.gitignore create mode 100644 arduino/.vscode/extensions.json create mode 100644 arduino/.vscode/settings.json create mode 100644 arduino/include/README create mode 100644 arduino/lib/README create mode 100644 arduino/platformio.ini create mode 100644 arduino/src/main.cpp create mode 100644 arduino/test/README diff --git a/arduino/.gitignore b/arduino/.gitignore new file mode 100644 index 0000000..89cc49c --- /dev/null +++ b/arduino/.gitignore @@ -0,0 +1,5 @@ +.pio +.vscode/.browse.c_cpp.db* +.vscode/c_cpp_properties.json +.vscode/launch.json +.vscode/ipch diff --git a/arduino/.vscode/extensions.json b/arduino/.vscode/extensions.json new file mode 100644 index 0000000..080e70d --- /dev/null +++ b/arduino/.vscode/extensions.json @@ -0,0 +1,10 @@ +{ + // See http://go.microsoft.com/fwlink/?LinkId=827846 + // for the documentation about the extensions.json format + "recommendations": [ + "platformio.platformio-ide" + ], + "unwantedRecommendations": [ + "ms-vscode.cpptools-extension-pack" + ] +} diff --git a/arduino/.vscode/settings.json b/arduino/.vscode/settings.json new file mode 100644 index 0000000..cad7657 --- /dev/null +++ b/arduino/.vscode/settings.json @@ -0,0 +1,3 @@ +{ + "cmake.configureOnOpen": false +} \ No newline at end of file diff --git a/arduino/include/README b/arduino/include/README new file mode 100644 index 0000000..194dcd4 --- /dev/null +++ b/arduino/include/README @@ -0,0 +1,39 @@ + +This directory is intended for project header files. + +A header file is a file containing C declarations and macro definitions +to be shared between several project source files. You request the use of a +header file in your project source file (C, C++, etc) located in `src` folder +by including it, with the C preprocessing directive `#include'. + +```src/main.c + +#include "header.h" + +int main (void) +{ + ... +} +``` + +Including a header file produces the same results as copying the header file +into each source file that needs it. Such copying would be time-consuming +and error-prone. With a header file, the related declarations appear +in only one place. If they need to be changed, they can be changed in one +place, and programs that include the header file will automatically use the +new version when next recompiled. The header file eliminates the labor of +finding and changing all the copies as well as the risk that a failure to +find one copy will result in inconsistencies within a program. + +In C, the usual convention is to give header files names that end with `.h'. +It is most portable to use only letters, digits, dashes, and underscores in +header file names, and at most one dot. + +Read more about using header files in official GCC documentation: + +* Include Syntax +* Include Operation +* Once-Only Headers +* Computed Includes + +https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html diff --git a/arduino/lib/README b/arduino/lib/README new file mode 100644 index 0000000..2593a33 --- /dev/null +++ b/arduino/lib/README @@ -0,0 +1,46 @@ + +This directory is intended for project specific (private) libraries. +PlatformIO will compile them to static libraries and link into executable file. + +The source code of each library should be placed in an own separate directory +("lib/your_library_name/[here are source files]"). + +For example, see a structure of the following two libraries `Foo` and `Bar`: + +|--lib +| | +| |--Bar +| | |--docs +| | |--examples +| | |--src +| | |- Bar.c +| | |- Bar.h +| | |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html +| | +| |--Foo +| | |- Foo.c +| | |- Foo.h +| | +| |- README --> THIS FILE +| +|- platformio.ini +|--src + |- main.c + +and a contents of `src/main.c`: +``` +#include +#include + +int main (void) +{ + ... +} + +``` + +PlatformIO Library Dependency Finder will find automatically dependent +libraries scanning project source files. + +More information about PlatformIO Library Dependency Finder +- https://docs.platformio.org/page/librarymanager/ldf.html diff --git a/arduino/platformio.ini b/arduino/platformio.ini new file mode 100644 index 0000000..74a7d45 --- /dev/null +++ b/arduino/platformio.ini @@ -0,0 +1,16 @@ +; PlatformIO Project Configuration File +; +; Build options: build flags, source filter +; Upload options: custom upload port, speed and extra flags +; Library options: dependencies, extra library storages +; Advanced options: extra scripting +; +; Please visit documentation for the other options and examples +; https://docs.platformio.org/page/projectconf.html + +[env:esp32doit-devkit-v1] +platform = espressif32 +board = esp32doit-devkit-v1 +framework = arduino +upload_port = /dev/ttyUSB0 +monitor_speed = 115200 \ No newline at end of file diff --git a/arduino/src/main.cpp b/arduino/src/main.cpp new file mode 100644 index 0000000..430f946 --- /dev/null +++ b/arduino/src/main.cpp @@ -0,0 +1,112 @@ +#include + +#define RXD2 16 +#define TXD2 17 +#define TIMEOUT 250 +#define MAX_TRIES 20 + +uint16_t calculateChecksum(const uint8_t* data, size_t length) { + uint16_t sum = 0; + for (size_t i = 0; i < length; i++) { + sum += data[i]; + } + uint16_t checksum = sum ^ 0xFFFF; + return (checksum & 0xFF) << 8 | (checksum >> 8); +} + +bool verifyChecksum(const uint8_t* data, size_t length) { + if (length < 4) { // Stellt sicher, dass genug Daten für eine Checksumme vorhanden sind + Serial.println("Datenlänge ist zu kurz für Checksummenüberprüfung."); + return false; + } + // Empfangene Checksumme aus den letzten zwei Bytes im Little-Endian Format + uint16_t received_checksum = (data[length-1] << 8) | data[length-2]; + + // Berechnet die Checksumme beginnend beim dritten Byte bis zum vorletzten Byte + uint16_t sum = 0; + for (size_t i = 2; i < length - 2; i++) { + sum += data[i]; + } + uint16_t calculated_checksum = sum ^ 0xFFFF; + calculated_checksum = (calculated_checksum & 0xFF) << 8 | (calculated_checksum >> 8); // Byte-Swap + + // Debug-Ausgaben + Serial.print("Received Checksum: "); + Serial.println(received_checksum, HEX); + Serial.print("Calculated Checksum: "); + Serial.println(calculated_checksum, HEX); + + // Vergleicht die berechnete Checksumme mit der empfangenen + return received_checksum == calculated_checksum; +} + +void processBmsResponse(const uint8_t* data, size_t length, uint8_t expectedCmd) { + for (int i = 0; i < length; i++) { + Serial.print(data[i], HEX); // Ausgeben jedes Bytes in Hexadezimal + Serial.print(" "); // Füge ein Leerzeichen zwischen den Hex-Werten ein + } + Serial.println(); // Füge eine neue Zeile am Ende hinzu + + + if (!verifyChecksum(data, length)) { + Serial.println("Checksumme ungültig!"); + return; + } + if (data[5] != expectedCmd) { // Korrekt, data[4] sollte das bArg sein, das überprüft wird + Serial.print("Erwartetes Register (Hex): "); + Serial.println(expectedCmd, HEX); // Ausgabe in Hex + Serial.print("Erhaltenes Register (Hex): "); + Serial.println(data[5], HEX); // Ausgabe in Hex + Serial.println("Falsches Register in der Antwort."); + return; + } + + Serial.println("Gültige Daten empfangen:"); + for (int i = 7; i < length - 2; i += 2) { + uint16_t voltage = (data[i] << 8) | data[i+1]; + Serial.print("Zellenspannung: "); + Serial.print(voltage); + Serial.println(" mV"); + } +} + +bool sendBmsCommand(uint8_t bLen, uint8_t bAddr, uint8_t bCmd, uint8_t bArg, uint8_t bPayload) { + uint8_t command[] = {0x55, 0xAA, bLen, bAddr, bCmd, bArg, bPayload}; + uint16_t checksum = calculateChecksum(command + 2, sizeof(command) - 2); + + for (int attempt = 0; attempt < MAX_TRIES; attempt++) { + Serial2.write(command, sizeof(command)); + Serial2.write((uint8_t)(checksum >> 8)); + Serial2.write((uint8_t)(checksum & 0xFF)); + + unsigned long startTime = millis(); + while (Serial2.available() == 0) { + if (millis() - startTime >= TIMEOUT) { + Serial.println("Timeout erreicht, sende erneut..."); + break; + } + } + + if (Serial2.available() > 0) { + uint8_t response[256]; + int index = 0; + while (Serial2.available() > 0 && index < 256) { + response[index++] = Serial2.read(); + } + processBmsResponse(response, index, bArg); // Übergabe von bArg direkt in Hex + return true; + } + } + + Serial.println("Maximale Versuche erreicht, keine Antwort."); + return false; +} + +void setup() { + Serial.begin(115200); + Serial2.begin(115200, SERIAL_8N1, RXD2, TXD2); + sendBmsCommand(0x03, 0x22, 0x01, 0x40, 0x14); // bArg wird hier als Hex-Wert 0x40 übergeben, erwartet als Antwort auch 0x40 +} + +void loop() { +} diff --git a/arduino/test/README b/arduino/test/README new file mode 100644 index 0000000..9b1e87b --- /dev/null +++ b/arduino/test/README @@ -0,0 +1,11 @@ + +This directory is intended for PlatformIO Test Runner and project tests. + +Unit Testing is a software testing method by which individual units of +source code, sets of one or more MCU program modules together with associated +control data, usage procedures, and operating procedures, are tested to +determine whether they are fit for use. Unit testing finds problems early +in the development cycle. + +More information about PlatformIO Unit Testing: +- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html