110 lines
2.7 KiB
C++
110 lines
2.7 KiB
C++
// ESPNOWSkate Reciever by Lukas Bachschwell this device SLAVE =D
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#include <Servo.h>
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#include "Arduino.h"
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#include "SSD1306.h"
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#include <esp_now.h>
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#include <WiFi.h>
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static const int esc1pin = 15;
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static const int esc2pin = 13;
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Servo esc1;
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Servo esc2;
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SSD1306 display(0x3c, 5, 4);
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//#define pairingMode
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#define FAILSAFE 90
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#define CONNECTION_TIMEOUT 200
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#define CHANNEL 1
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long lastPacket = 0;
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bool isConnected = false;
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// ESPNOW Functions ############################
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//
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// config AP
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void configDeviceAP(bool hidden) {
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bool result = WiFi.softAP("ESK8", "ESK8_Password+vD8z2YAvoDBW?Zx", CHANNEL, hidden);
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if (!result) {
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Serial.println("AP Config failed.");
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} else {
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Serial.println("AP Config Success. Broadcasting with AP: " + String("ESK8"));
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}
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}
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void writeServos(uint8_t firstServo, uint8_t secondServo) {
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isConnected = true;
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esc1.write(firstServo);
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esc2.write(secondServo);
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}
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// callback when data is recv from Master
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void OnDataRecv(const uint8_t *mac_addr, const uint8_t *data, int data_len) {
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char macStr[18];
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snprintf(macStr, sizeof(macStr), "%02x:%02x:%02x:%02x:%02x:%02x",
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mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
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Serial.print("Last Packet Recv from: "); Serial.println(macStr);
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uint8_t recData[2];
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memcpy(recData, data, data_len);
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Serial.print("Last Packet Recv Data: "); Serial.println(recData[0]); Serial.print(" "); Serial.print(recData[1]); Serial.print(" len:"); Serial.println(data_len);
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lastPacket = millis();
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isConnected = true;
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// Could check mac here for some security
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writeServos(recData[0], recData[1]);
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display.clear();
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char buf[25];
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sprintf(buf, "1: %i | 2: %i", recData[0], recData[1]);
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display.drawString(2, 0, buf);
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display.display();
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}
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// end ESPNOW functions
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void setup() {
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Serial.begin(115200);
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Serial.println("ESPNowSkate Reciever");
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display.init();
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display.flipScreenVertically();
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display.setFont(ArialMT_Plain_16);
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esc1.attach(esc1pin);
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esc2.attach(esc2pin);
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//Set device in AP mode to begin with
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WiFi.mode(WIFI_AP);
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// configure device AP mode
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#ifdef pairingMode
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configDeviceAP(false);
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#else
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configDeviceAP(true);
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#endif
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Serial.print("AP MAC: "); Serial.println(WiFi.softAPmacAddress());
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// Init ESPNow
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if (esp_now_init() == ESP_OK) {
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Serial.println("ESPNow Init Success");
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}
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else {
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Serial.println("ESPNow Init Failed");
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ESP.restart();
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}
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// Once ESPNow is successfully Init, we will register for recv CB to
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// get recv packer info.
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esp_now_register_recv_cb(OnDataRecv);
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}
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void loop() {
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if(isConnected) {
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if(millis() - lastPacket > CONNECTION_TIMEOUT ) {
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isConnected = false;
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writeServos(FAILSAFE, FAILSAFE);
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}
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}
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}
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