Progress commit

lib/SyRen50/src/Syren50.cpp

@@ -6,17 +6,17 @@
 #define TXD2 17
 
 void Syren50::init() {
-    Serial2.begin(9600, SERIAL_8N1, RXD2, TXD2);
+    Serial1.begin(9600);
     delay(1000); // Give about 1 second to boot up, per datasheet
-    Serial2.write(0b10101010);
+    Serial1.write(0b10101010);
 }
 
 void Syren50::command(uint8_t command, uint8_t data) {
-    Serial2.write(0x80); // Address
-    Serial2.write(command); // Command
-    Serial2.write(data);
-    Serial2.write((0x80 + command + data) & 0b01111111); // Checksum
-    Serial2.flush();
+    Serial1.write(0x80); // Address
+    Serial1.write(command); // Command
+    Serial1.write(data);
+    Serial1.write((0x80 + command + data) & 0b01111111); // Checksum
+    Serial1.flush();
     delay(5);
 }
 

platformio.ini

@@ -10,12 +10,12 @@
 
 
 [platformio]
-default_envs = esp32dev
-name = WiFiTrainReceiver
+default_envs = leonardo
+name = TrainReceiver
 
-[env:esp32dev]
-platform = espressif32
+[env:leonardo]
+platform = atmelavr
 framework = arduino
-board = esp32dev
+board = leonardo
 lib_deps = 
-	ArduinoJson
+	jgromes/RadioLib@^5.7.0

src/creds.h.txt

@@ -1,16 +0,0 @@
-#ifndef CREDS_H
-#define CREDS_H
-
-/*
-
-INSTRUCTIONS:
-
-Change the text inside of the " characters to contain your SSID and Password for your WiFi
-After that, rename this file from ending in .txt to .h and compile.
-
-*/
-
-#define WIFI_SSID "YOUR SSID HERE"
-#define WIFI_PASS "YOUR PASSWORD HERE!"
-
-#endif

src/main.cpp

@@ -1,29 +1,32 @@
 #include "Arduino.h"
-#include "WiFi.h"
-#include <HTTPClient.h>
-#include "creds.h"
-#include <string>
-#include <ArduinoJson.h>
 #include "Syren50.h"
+#include "string.h"
+#include <RadioLib.h>
 using namespace std;
 
 Syren50 motor;
+// RF69 has the following connections:
+// CS pin:    10
+// DIO0 pin:  2
+// RESET pin: 3
+RF69 radio = new Module(10, 2, 3);
 
-void initWiFi() {
-  WiFi.mode(WIFI_STA);
-  WiFi.begin(WIFI_SSID, WIFI_PASS);
-  Serial.print("Connecting to WiFi ..");
-  while (WiFi.status() != WL_CONNECTED) {
-    Serial.print('.');
-    delay(1000);
-  }
-  Serial.println(WiFi.localIP());
+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(115200);
     Serial.println("Begin!");
-    initWiFi();
+    radioInit();
     motor.init();
 }
 
@@ -41,38 +44,34 @@ void inertia(float throttle, int8_t direction, float &inertial_throttle, int8_t
 float motor_throttle;
 int8_t motor_direction;
 
-void parse_json(String json_string, float &throttle, int8_t &direction) {
-    StaticJsonDocument<200> doc;
-    DeserializationError error = deserializeJson(doc, json_string);
-    // Test if parsing succeeds.
-    if (error) {
-        Serial.print(F("deserializeJson() failed: "));
-        Serial.println(error.f_str());
-        return;
-    }
-    // Parse inputs and return them
-    throttle = doc["throttle"];
-    direction = (int8_t) doc["direction"];
+uint8_t failure_count = 0;
+
+void parse_string(String str, float &throttle, int8_t &direction) {
+    //int8_t index_comma = str.indexOf(",");
+    //String throttle_string = str.substring(0, index_comma);
+    //String direction_string = str.substring(index_comma);
+    //throttle = strtof(throttle_string);
+    //direction = (int8_t) strtod(direction_string);
 }
 
 void get_control_inputs(float &throttle, int8_t &direction) {
-    if(WiFi.status()== WL_CONNECTED){
-        HTTPClient http;
-        String serverName = "http://10.0.2.148:2093/control";
-        http.begin(serverName.c_str());
-        int httpResponseCode = http.GET();
-
-        if (httpResponseCode == 200) {
-            String payload = http.getString();
-            parse_json(payload, throttle, direction);
-            Serial.println("200");
-        } else {
-            Serial.println("Error communicating with webserver. Got HTTP status code:");
-            Serial.println(httpResponseCode);
-        }
-        http.end();
+    String str;
+    int state = radio.receive(str);
+    if (state == RADIOLIB_ERR_NONE) {
+        Serial.print(F("[RF69] Data:\t\t"));
+        Serial.println(str);
+        Serial.print(F("[RF69] RSSI:\t\t"));
+        Serial.print(radio.getRSSI());
+        Serial.println(F(" dBm"));
+        parse_string(str, throttle, direction);
+    } else if (state == RADIOLIB_ERR_RX_TIMEOUT) {
+        throttle = 0.0f;
+        direction = 0;
+    } else if (state == RADIOLIB_ERR_CRC_MISMATCH) {
+        Serial.println(F("CRC error!"));
     } else {
-        Serial.println("WiFi not connected!");
+        Serial.print(F("failed, code "));
+        Serial.println(state);
     }
 }