Progress commit

platformio.ini

@@ -9,23 +9,15 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [platformio]
-default_envs = esp12e
+default_envs = leonardo
 name = RemoteTrainControl
 
-[env:esp12e]
-platform = espressif8266
+[env:leonardo]
+platform = atmelavr
 framework = arduino
-board = esp12e
-lib_deps = 
-	adafruit/Adafruit ADS1X15@^2.4.0
-	SPI
-	adafruit/Adafruit SSD1306@^2.5.7
-
-[env:nodemcuv2]
-platform = espressif8266
-framework = arduino
-board = nodemcuv2
+board = leonardo
 lib_deps = 
 	adafruit/Adafruit ADS1X15@^2.4.0
 	SPI
 	adafruit/Adafruit SSD1306@^2.5.7
+	jgromes/RadioLib@^5.7.0

src/controls.cpp

@@ -10,12 +10,11 @@ void controlsInit() {
     ads1115.setGain(GAIN_ONE);
 }
 
-float map(float x, float in_min, float in_max, float out_min, float out_max)
-{
+float map(float x, float in_min, float in_max, float out_min, float out_max) {
     return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
 }
 
-void getControlsState(float &throttle, int &direction, bool &horn, bool &bell, bool &lights) {
+void getControlsState(float &throttle, int8_t &direction, bool &horn, bool &bell, bool &lights) {
     float throttle_volts = ads1115.computeVolts(ads1115.readADC_SingleEnded(0));
     float direction_volts = ads1115.computeVolts(ads1115.readADC_SingleEnded(1));
 

src/controls.h

@@ -3,6 +3,6 @@
 
 void controlsInit();
 float map(float x, float in_min, float in_max, float out_min, float out_max);
-void getControlsState(float &throttle, int &direction, bool &horn, bool &bell, bool &lights);
+void getControlsState(float &throttle, int8_t &direction, bool &horn, bool &bell, bool &lights);
 
 #endif

src/main.cpp

@@ -1,29 +1,69 @@
 #include "Arduino.h"
 #include "screen.h"
-#include "wifi.h"
 #include "controls.h"
-#include <ESP8266WiFi.h>
-#include <ESP8266WebServer.h>
-#include <string>
+#include <RadioLib.h>
+#include "string.h"
 using namespace std;
 
+// RF69 has the following connections:
+// CS pin:    10
+// DIO0 pin:  2
+// RESET pin: 3
+RF69 radio = new Module(10, 2, 3);
+
+void radioInit() {
+    Serial.print(F("[RF69] Initializing ... "));
+    int state = radio.begin(918.5, 300.0, 60.0, 250.0, 10, 32);
+    if (state == RADIOLIB_ERR_NONE) {
+        Serial.println(F("success!"));
+    } else {
+        Serial.print(F("failed, code "));
+        Serial.println(state);
+        while (true);
+    }
+}
+
 void setup() {
     Serial.begin(9600);
     displayInit();
     controlsInit();
-    WiFi.softAP(WIFI_SSID, WIFI_PASS);
-    displayWiFiInformation(WIFI_SSID, WIFI_PASS);
+    radioInit();
 }
 
 float throttle = 0.0f;
-uint8_t direction = 0;
+int8_t direction = 0;
 bool horn = false;
 bool bell = false;
 bool lights = false;
 
+void sendStringToRadio(String str) {
+    int state = radio.transmit("Hello World!");
+    if (state == RADIOLIB_ERR_NONE) {
+    } else if (state == RADIOLIB_ERR_PACKET_TOO_LONG) {
+        // the supplied packet was longer than 64 bytes
+        Serial.println(F("too long!"));
+    } else {
+        Serial.print(F("failed, code "));
+        Serial.println(state);
+    }
+}
+
+void serializeThrottleDirection(float throttle, int8_t direction, String &str) {
+    str += String(throttle);
+    str += ",";
+    str += String(direction);
+}
+
+void sendControlOutputs(float throttle, int8_t direction, bool horn, bool bell, bool lights) {
+    String str;
+    serializeThrottleDirection(throttle, direction, str);
+    Serial.println(str);
+    sendStringToRadio(str);
+}
+
 void loop() {
     getControlsState(throttle, direction, horn, bell, lights);
     displayControlStatus(throttle, direction, horn, bell, lights);
-    //sendControlOutputs(throttle, direction, horn, bell, lights);
-    delay(1);
-}
+    sendControlOutputs(throttle, direction, horn, bell, lights);
+    delay(100);
+}

src/screen.cpp

@@ -3,7 +3,7 @@
 #include <Wire.h>
 #include <Adafruit_GFX.h>
 #include <Adafruit_SSD1306.h>
-#include <string>
+#include "string.h"
 using namespace std;
 
 #define SCREEN_WIDTH 128
@@ -21,7 +21,7 @@ void displayInit() {
     }
 }
 
-void displayString(string inputString) {
+void displayString(String inputString) {
     if (!displayEnabled) {
         return;
     }
@@ -30,25 +30,7 @@ void displayString(string inputString) {
     }
 }
 
-void displayWiFiInformation(string wifiSSID, string wifiPassword) {
-    if (!displayEnabled) {
-        return;
-    }
-    display.clearDisplay();
-    display.setTextSize(1);
-    display.setTextColor(SSD1306_WHITE);
-    display.setCursor(0,0);
-    displayString("WiFi Information:");
-    display.setCursor(0,8);
-    displayString("SSID: ");
-    displayString(wifiSSID);
-    display.setCursor(0,16);
-    displayString("Pass: ");
-    displayString(wifiPassword);
-    display.display();
-}
-
-void displayDirection(int &direction) {
+void displayDirection(int8_t &direction) {
     if (direction == 0) {
         displayString("N");
     } else if (direction == 1) {
@@ -68,7 +50,7 @@ void displayBool(bool &state) {
     }
 }
 
-void displayControlStatus(float &throttle, int &direction, bool &horn, bool &bell, bool &lights) {
+void displayControlStatus(float &throttle, int8_t &direction, bool &horn, bool &bell, bool &lights) {
     if (!displayEnabled) {
       return;
     }

src/screen.h

@@ -1,14 +1,13 @@
 #ifndef SCREEN_H
 #define SCREEN_H
 
-#include <string>
+#include "string.h"
 using namespace std;
 
 void displayInit();
-void displayString(string inputString);
-void displayWiFiInformation(string wifiSSID, string wifiPassword);
-void displayDirection(int &direction);
+void displayString(String inputString);
+void displayDirection(int8_t &direction);
 void displayBool(bool &state);
-void displayControlStatus(float &throttle, int &direction, bool &horn, bool &bell, bool &lights);
+void displayControlStatus(float &throttle, int8_t &direction, bool &horn, bool &bell, bool &lights);
 
 #endif