Initial import

Author: squix78

.github/workflows/main.yml

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+# documentation at https://docs.platformio.org/en/latest/integration/ci/github-actions.html
+
+name: PlatformIO CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.platformio/.cache
+          key: ${{ runner.os }}-pio
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.9'
+      - name: Install PlatformIO Core
+        run: pip install --upgrade platformio
+
+      - name: Build PlatformIO Project
+        run: pio run

.gitignore

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+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch
+.DS_Store

.vscode/extensions.json

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+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

partition_table.csv

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+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x6000,
+otadata,  data, ota,     0xf000,  0x2000,
+app0,     app,  ota_0,   0x10000, 0x700000,
+app1,     app,  ota_1,   0x710000,0x700000,
+spiffs,   data, spiffs,  0xe10000,0x1F0000,

platformio.ini

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+; 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
+
+[env]
+platform = platformio/espressif32@^6.11.0
+
+framework = arduino
+board = esp-wrover-kit
+; disable the next two lines for automatic port assignment
+monitor_port = /dev/cu.wchusbserial58900018531
+upload_port = /dev/cu.wchusbserial58900018531
+upload_speed = 921600
+monitor_speed = 115200
+board_build.flash_size = 8MB
+board_build.partitions = huge_app.csv
+;board_build.f_cpu = 240000000L
+monitor_filters = esp32_exception_decoder, time
+lib_deps = h2zero/NimBLE-Arduino@^2.3.2
+            suculent/AESLib@^2.3.6
+            bblanchon/ArduinoJson@^7.4.2
+            fastled/FastLED @ ^3.3.3
+
+[env:production]
+build_flags = -DCORE_DEBUG_LEVEL=1
+
+
+[env:local-dev]
+build_flags = 
+    -DCORE_DEBUG_LEVEL=5
+

src/led.h

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+#pragma once
+
+#include <FastLED.h>
+#include "settings.h"
+
+CRGB leds[LED_COUNT];
+
+// Initialize 
+void initStatusLeds() {
+  FastLED.addLeds<WS2812B, ESP_LED_PIN, GRB>(leds, LED_COUNT);
+  FastLED.setBrightness(50);
+}
+
+void clearLeds() {
+  for (int i = 0; i < LED_COUNT; i++) {
+    leds[i] = CRGB::Black;
+  }
+}
+
+// Set the color of LED at position <index>
+void updateLed(uint8_t index, CRGB color) {
+    leds[index] = color;
+    FastLED.show();
+}

src/main.cpp

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+#include <esp_now.h>
+#include <WiFi.h>
+#include <esp_wifi.h>
+
+// REPLACE WITH YOUR RECEIVER MAC Address
+uint8_t broadcastAddress[] = {0xC8, 0xF0, 0x9E, 0x19, 0x88, 0x80}; 
+
+// Structure example to send data
+// Must match the receiver structure
+typedef struct {  
+    float accMag;
+    float meanhpfvm;
+    float peakhpfvm;
+    float gyrMag;
+    float tempC;
+    float batteryLevelVoltage;
+    int batteryLevelPercentage;
+    char timeStamp[25];
+    char id[32];
+} SensorPacket;
+
+uint8_t mac[6]; //Mac address
+char macStr[18]; //Mac address in string format
+
+// Create a struct_message called myData
+SensorPacket myData;
+
+esp_now_peer_info_t peerInfo;
+
+uint8_t channel = 0;
+bool isHubChannelFound = false;
+uint8_t failureCount = 0;
+
+// callback when data is sent
+void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) {
+  Serial.print("\r\nLast Packet Send Status:\t");
+  log_i("Sending status: %s", status == ESP_NOW_SEND_SUCCESS ? "Delivery Success" : "Delivery Fail");
+  // Did sending fail?
+  if (status == ESP_NOW_SEND_FAIL) {
+    if (!isHubChannelFound) {
+        log_i("Failed with channel %d.", channel);
+        // Increase channel. If hub is not online this will search forever!
+        // Consider implementing an increasing waiting time to avoid channel congestion
+        // whenn all nodes start searching a channel
+        channel = (channel + 1) % 13;
+        esp_wifi_set_promiscuous(true);
+        esp_wifi_set_channel(channel, WIFI_SECOND_CHAN_NONE);
+        esp_wifi_set_promiscuous(false);
+    } else {
+        // If the hub channel has been found before but we have failures now
+        // we give the hub some time before we start searching the channel again
+        // This might avoid all nodes starting the channel search immediatelly
+        failureCount++;
+        if (failureCount > 10) {
+            isHubChannelFound = false;
+        }
+    }
+    
+  } else {
+    failureCount = 0;
+    isHubChannelFound = true;
+  }
+}
+ 
+void setup() {
+  // Init Serial Monitor
+  Serial.begin(115200);
+ 
+  // Set device as a Wi-Fi Station
+  WiFi.mode(WIFI_STA);
+
+  // Init ESP-NOW
+  if (esp_now_init() != ESP_OK) {
+    log_i("Error initializing ESP-NOW");
+    return;
+  }
+
+  esp_err_t ret = esp_wifi_get_mac(WIFI_IF_STA, mac); //Read MAC address (station mode)
+
+  if (ret == ESP_OK) {
+      snprintf(macStr, sizeof(macStr), "%02X:%02X:%02X:%02X:%02X:%02X",
+          mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); //Convert MAC (unique ID of the device)
+  } else {
+
+          log_i("Failed to get the MAC!");
+  }
+
+  log_i("%s", macStr);
+
+  // Once ESPNow is successfully Init, we will register for Send CB to
+  // get the status of Trasnmitted packet
+  esp_now_register_send_cb(OnDataSent);
+
+  esp_wifi_set_promiscuous(true);
+  esp_wifi_set_channel(channel, WIFI_SECOND_CHAN_NONE);
+  esp_wifi_set_promiscuous(false);
+  
+  // Register peer
+  memcpy(peerInfo.peer_addr, broadcastAddress, 6);
+  peerInfo.channel = 0;  
+  peerInfo.encrypt = false;
+  
+  // Add peer        
+  if (esp_now_add_peer(&peerInfo) != ESP_OK){
+    log_i("Failed to add peer");
+    return;
+  }
+}
+ 
+void loop() {
+
+  myData.accMag = random(1,20) / 10.0f;
+  myData.meanhpfvm = random(1,20) / 10.0f;
+  myData.peakhpfvm = random(1,20) / 10.0f;
+  myData.gyrMag = random(1,20) / 10.0f;
+  myData.tempC = random(0,450) / 10.0f;
+  myData.batteryLevelVoltage = random(1,20) / 10.0f;
+  myData.batteryLevelPercentage = random(1,20);
+  // Timestamp will be set on hub
+  strcpy(myData.timeStamp, "1970-01-01T00:00:00Z");
+  // could also be set on receiver side
+  strcpy(myData.id,macStr);
+  
+  // Send message via ESP-NOW
+  esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *) &myData, sizeof(myData));
+   
+  if (result == ESP_OK) {
+    log_i("Sent with success");
+  } else {
+    log_i("Error sending the data");
+  }
+
+  if (isHubChannelFound) {
+    delay(2000);
+  } else {
+    delay(100);
+  }
+
+}

src/settings.h

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+#pragma once
+
+#include <ETH.h>
+
+// Ethernet settings
+#define ETH_CLK_MODE    ETH_CLOCK_GPIO16_OUT
+#define ETH_POWER_PIN     5
+#define ETH_TYPE        ETH_PHY_LAN8720
+#define ETH_ADDR        0
+#define ETH_MDC_PIN     23
+#define ETH_MDIO_PIN    18
+
+#define ETH_TIMEOUT_MILLIS 10000
+
+// LED Settings
+#define ESP_LED_PIN 32
+#define LED_COUNT   4
+#define CHANNEL     0