95 lines
2.1 KiB
Arduino
95 lines
2.1 KiB
Arduino
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// Import required libraries
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#include "WiFi.h"
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#include <ESPAsyncWebServer.h>
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// needs esp32 2.0.* in boards manaager // https://forum.arduino.cc/t/libary-problem-with-esp32-web-server/1282583/6
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// Set your access point network credentials
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const char* ssid = "ESP32-Access-Point";
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const char* password = "123456789";
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#include "BluetoothSerial.h"
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#include "ELMduino.h"
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// Create AsyncWebServer object on port 80
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AsyncWebServer server(80);
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BluetoothSerial SerialBT;
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#define ELM_PORT SerialBT
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#define DEBUG_PORT Serial
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ELM327 myELM327;
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uint32_t kph = 0;
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String readSpeed() {
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if (ELM_PORT.isClosed()) {
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return "0";
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}
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float tempkph = myELM327.kph();
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if (myELM327.nb_rx_state == ELM_SUCCESS) {
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kph = (uint32_t)tempkph;
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Serial.print("kph: ");
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Serial.println(kph);
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} else if (myELM327.nb_rx_state != ELM_GETTING_MSG)
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myELM327.printError();
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return String(kph);
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// return "123";
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}
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void connectElm() {
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if (!ELM_PORT.connect("OBDII")) {
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DEBUG_PORT.println("Couldn't connect to OBD scanner - Phase 1");
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// while (1)
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// ;
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return;
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}
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if (!myELM327.begin(ELM_PORT, true, 2000)) {
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Serial.println("Couldn't connect to OBD scanner - Phase 2");
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// while (1)
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// ;
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return;
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}
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Serial.println("Connected to ELM327");
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}
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void setup() {
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DEBUG_PORT.begin(115200);
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SerialBT.setPin("1234");
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ELM_PORT.begin("ArduHUD", true);
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Serial.println("Starting ELM327 to wifi bridge");
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//connectElm();
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// Setting the ESP as an access point
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Serial.print("Setting AP (Access Point)…");
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// Remove the password parameter, if you want the AP (Access Point) to be open
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WiFi.softAP(ssid, password);
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IPAddress IP = WiFi.softAPIP();
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Serial.print("AP IP address: ");
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Serial.println(IP);
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server.on("/speed", HTTP_GET, [](AsyncWebServerRequest* request) {
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request->send_P(200, "text/plain", readSpeed().c_str());
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});
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// Start server
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server.begin();
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}
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void loop() {
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if (ELM_PORT.isClosed()) {
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Serial.println("Trying to reconnect to ELM327");
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connectElm();
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}
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}
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