Add initial DUT implementation

device-under-test/platformio.ini

@@ -0,0 +1,35 @@
+; 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
+
+[platformio]
+default_envs = 
+	esp32dev
+
+[env]
+framework = arduino
+lib_ldf_mode = deep
+monitor_speed = 115200
+lib_deps = 
+	mairas/ReactESP
+	; /Users/mairas/src/SK/SensESP
+	ttlappalainen/NMEA2000-library
+	ttlappalainen/NMEA2000_esp32
+
+[espressif32_base]
+platform = espressif32
+build_unflags = -Werror=reorder
+board_build.partitions = min_spiffs.csv
+monitor_filters = esp32_exception_decoder
+
+[env:esp32dev]
+extends = espressif32_base
+board = esp32dev
+build_flags = 
+	-D LED_BUILTIN=2

device-under-test/src/main.cpp

@@ -0,0 +1,107 @@
+#include <Arduino.h>
+
+#define SDA_PIN 16
+#define SCL_PIN 17
+#define ONEWIRE_DQ_PIN 4
+#define OPTO_OUT_PIN 33
+#define ESP32_CAN_RX_PIN GPIO_NUM_34
+#define ESP32_CAN_TX_PIN GPIO_NUM_32
+
+#include <N2kMessages.h>
+#include <NMEA2000_CAN.h>  // This will automatically choose right CAN library and create suitable NMEA2000 object
+
+#include "ReactESP.h"
+
+#define SDA_PIN 16
+#define SCL_PIN 17
+#define DQ_PIN 4
+#define OPTO_IN_PIN 35
+#define OPTO_OUT_PIN 33
+
+volatile bool opto_in_change;
+
+ReactESP app([]() {
+  // setup serial output
+  Serial.begin(115200);
+  delay(100);
+
+  // toggle the SDA pin at the rate of 100 Hz
+  pinMode(SDA_PIN, OUTPUT);
+  app.onRepeatMicros(1e6/100, []() {
+    static bool state = false;
+    digitalWrite(SDA_PIN, state);
+    state = !state;
+  });
+  
+  // toggle the SCL pin at the rate of 141 Hz
+  pinMode(SCL_PIN, OUTPUT);
+  app.onRepeatMicros(1e6/141, []() {
+    static bool state = false;
+    digitalWrite(SCL_PIN, state);
+    state = !state;
+  });
+  
+  // toggle the DQ pin at the rate of 141 Hz
+  pinMode(DQ_PIN, OUTPUT);
+  app.onRepeatMicros(1e6/173, []() {
+    static bool state = false;
+    digitalWrite(DQ_PIN, state);
+    state = !state;
+  });
+  
+  // toggle the LED pin at the rate of 4 Hz
+  pinMode(LED_BUILTIN, OUTPUT);
+  app.onRepeatMicros(1e6/4, []() {
+    static bool state = false;
+    digitalWrite(LED_BUILTIN, state);
+    state = !state;
+  });  
+
+  // make OPTO_OUT_PIN the boolean inverse of OPTO_IN_PIN
+  pinMode(OPTO_IN_PIN, INPUT);
+  app.onInterrupt(OPTO_IN_PIN, CHANGE, []() {
+    opto_in_change = true;
+  });
+
+  pinMode(OPTO_OUT_PIN, OUTPUT);
+  app.onTick([](){
+    if (opto_in_change) {
+      opto_in_change = false;
+      digitalWrite(OPTO_OUT_PIN, !digitalRead(OPTO_IN_PIN));
+    }
+  });
+
+  // Reserve enough buffer for sending all messages.
+  NMEA2000.SetN2kCANSendFrameBufSize(250);
+  // Set Product information
+  NMEA2000.SetProductInformation(
+      "20210307",              // Manufacturer's Model serial code
+      102,                     // Manufacturer's product code
+      "SH-ESP32 Test Jig DUT",       // Manufacturer's Model ID
+      "0.1.0.1 (2021-03-07)",  // Manufacturer's Software version code
+      "0.0.3.1 (2021-03-07)"   // Manufacturer's Model version
+  );
+  // Set device information
+  NMEA2000.SetDeviceInformation(
+      1,    // Unique number. Use e.g. Serial number.
+      132,  // Device function=Analog to NMEA 2000 Gateway. See codes on
+            // http://www.nmea.org/Assets/20120726%20nmea%202000%20class%20&%20function%20codes%20v%202.00.pdf
+      25,   // Device class=Inter/Intranetwork Device. See codes on
+           // http://www.nmea.org/Assets/20120726%20nmea%202000%20class%20&%20function%20codes%20v%202.00.pdf
+      2046  // Just choosen free from code list on
+            // http://www.nmea.org/Assets/20121020%20nmea%202000%20registration%20list.pdf
+  );
+
+  NMEA2000.SetMode(tNMEA2000::N2km_NodeOnly, 22);
+  NMEA2000.EnableForward(false);  // Disable all msg forwarding to USB (=Serial)
+  NMEA2000.Open();
+
+  // No need to parse the messages at every single loop iteration; 1 ms will do
+  app.onRepeat(1, []() { NMEA2000.ParseMessages(); });
+
+  app.onRepeat(100, []() {
+    tN2kMsg N2kMsg;
+    SetN2kTemperatureExt(N2kMsg, 1, 1, N2kts_MainCabinTemperature, 273.15 + 24.5);
+    NMEA2000.SendMsg(N2kMsg);
+  });
+});