usermod support for Adafruit MAX17048 module

platformio.ini

@@ -163,6 +163,9 @@ lib_deps =
   #For ADS1115 sensor uncomment following
     ;adafruit/Adafruit BusIO @ 1.13.2
     ;adafruit/Adafruit ADS1X15 @ 2.4.0
+  #For MAX1704x Lipo Monitor / Fuel Gauge uncomment following
+    ; https://github.com/adafruit/Adafruit_BusIO @ 1.14.5
+    ; https://github.com/adafruit/Adafruit_MAX1704X @ 1.0.2
   #For MPU6050 IMU uncomment follwoing
     ;electroniccats/MPU6050 @1.0.1
   # For -D USERMOD_ANIMARTRIX

usermods/MAX17048_v2/readme.md

@@ -0,0 +1,64 @@
+# Adafruit MAX17048 Usermod (LiPo & LiIon Battery Monitor & Fuel Gauge)
+This usermod reads information from an Adafruit MAX17048  and outputs the following:
+- Battery Voltage
+- Battery Level Percentage
+
+
+## Dependencies
+Libraries:
+- `Adafruit_BusIO@~1.14.5` (by [adafruit](https://github.com/adafruit/Adafruit_BusIO))
+- `Adafruit_MAX1704X@~1.0.2` (by [adafruit](https://github.com/adafruit/Adafruit_MAX1704X))
+
+These must be added under `lib_deps` in your `platform.ini` (or `platform_override.ini`).
+Data is published over MQTT - make sure you've enabled the MQTT sync interface.
+
+## Compilation
+
+To enable, compile with `USERMOD_MAX17048` define in the build_flags (e.g. in `platformio.ini` or `platformio_override.ini`) such as in the example below:
+```ini
+[env:usermod_max17048_d1_mini]
+extends = env:d1_mini
+build_flags =
+  ${common.build_flags_esp8266}
+  -D USERMOD_MAX17048
+lib_deps = 
+  ${esp8266.lib_deps}
+  https://github.com/adafruit/Adafruit_BusIO @ 1.14.5
+  https://github.com/adafruit/Adafruit_MAX1704X @ 1.0.2
+```
+
+### Configuration Options
+The following settings can be set at compile-time but are configurable on the usermod menu (except First Monitor time):
+- USERMOD_MAX17048_MIN_MONITOR_INTERVAL (the min number of milliseconds between checks, defaults to 10,000 ms)
+- USERMOD_MAX17048_MAX_MONITOR_INTERVAL (the max number of milliseconds between checks, defaults to 10,000 ms)
+- USERMOD_MAX17048_FIRST_MONITOR_AT
+
+
+Additionally, the Usermod Menu allows you to:
+- Enable or Disable the usermod
+- Enable or Disable Home Assistant Discovery (turn on/off to sent MQTT Discovery entries for Home Assistant)
+- Configure SCL/SDA GPIO Pins
+
+## API
+The following method is available to interact with the usermod from other code modules:
+- `getBatteryVoltageV` read the last battery voltage (in Volt) obtained from the sensor
+- `getBatteryPercent` reads the last battery percentage obtained from the sensor
+
+## MQTT
+MQTT topics are as follows (`<deviceTopic>` is set in MQTT section of Sync Setup menu):
+Measurement type | MQTT topic
+--- | ---
+Battery Voltage | `<deviceTopic>/batteryVoltage`
+Battery Percent | `<deviceTopic>/batteryPercent`
+
+## Authors
+Carlos Cruz [@ccruz09](https://github.com/ccruz09)
+
+
+## Revision History
+Jan 2024
+- Added Home Assistant Discovery
+- Implemented PinManager to register pins
+- Added API call for other modules to read battery voltage and percentage
+- Added info-screen outputs
+- Updated `readme.md`

usermods/MAX17048_v2/usermod_max17048.h

@@ -0,0 +1,281 @@
+// force the compiler to show a warning to confirm that this file is included
+#warning **** Included USERMOD_MAX17048 V2.0 ****
+
+#pragma once
+
+#include "wled.h"
+#include "Adafruit_MAX1704X.h"
+
+
+// the max interval to check battery level, 10 seconds
+#ifndef USERMOD_MAX17048_MAX_MONITOR_INTERVAL
+#define USERMOD_MAX17048_MAX_MONITOR_INTERVAL 10000
+#endif
+
+// the min  interval to check battery level, 500 ms
+#ifndef USERMOD_MAX17048_MIN_MONITOR_INTERVAL
+#define USERMOD_MAX17048_MIN_MONITOR_INTERVAL 500
+#endif
+
+// how many seconds after boot to perform the first check, 10 seconds
+#ifndef USERMOD_MAX17048_FIRST_MONITOR_AT
+#define USERMOD_MAX17048_FIRST_MONITOR_AT 10000
+#endif
+
+/* 
+ * Usermod to display Battery Life using Adafruit's MAX17048 LiPoly/ LiIon Fuel Gauge and Battery Monitor.
+ */
+class  Usermod_MAX17048 : public Usermod {
+
+  private:
+
+    bool enabled = true;
+
+    unsigned long maxReadingInterval = USERMOD_MAX17048_MAX_MONITOR_INTERVAL;
+    unsigned long minReadingInterval = USERMOD_MAX17048_MIN_MONITOR_INTERVAL;
+    unsigned long lastCheck = UINT32_MAX - (USERMOD_MAX17048_MAX_MONITOR_INTERVAL - USERMOD_MAX17048_FIRST_MONITOR_AT);
+    unsigned long lastSend = UINT32_MAX - (USERMOD_MAX17048_MAX_MONITOR_INTERVAL - USERMOD_MAX17048_FIRST_MONITOR_AT);
+
+
+    uint8_t  VoltageDecimals = 3;  // Number of decimal places in published voltage values
+    uint8_t  PercentDecimals = 1;    // Number of decimal places in published percent values
+
+    // string that are used multiple time (this will save some flash memory)
+    static const char _name[];
+    static const char _enabled[];
+    static const char _maxReadInterval[];
+    static const char _minReadInterval[];
+    static const char _HomeAssistantDiscovery[];
+
+    bool monitorFound = false;
+    bool firstReadComplete = false;
+    bool initDone = false;
+
+    Adafruit_MAX17048 maxLipo;
+    float lastBattVoltage = -10;
+    float lastBattPercent = -1;
+
+    // MQTT and Home Assistant Variables
+    bool HomeAssistantDiscovery = false;    // Publish Home Assistant Device Information
+    bool mqttInitialized = false; 
+
+    void _mqttInitialize()
+    {
+        char mqttBatteryVoltageTopic[128];
+        char mqttBatteryPercentTopic[128];
+
+        snprintf_P(mqttBatteryVoltageTopic, 127, PSTR("%s/batteryVoltage"), mqttDeviceTopic);
+        snprintf_P(mqttBatteryPercentTopic, 127, PSTR("%s/batteryPercent"), mqttDeviceTopic);
+
+        if (HomeAssistantDiscovery) {
+        _createMqttSensor(F("BatteryVoltage"), mqttBatteryVoltageTopic, "voltage", F("V"));
+        _createMqttSensor(F("BatteryPercent"), mqttBatteryPercentTopic, "battery", F("%"));
+        }
+    }
+
+    void _createMqttSensor(const String &name, const String &topic, const String &deviceClass, const String &unitOfMeasurement)
+    {
+        String t = String(F("homeassistant/sensor/")) + mqttClientID + F("/") + name + F("/config");
+
+        StaticJsonDocument<600> doc;
+
+        doc[F("name")] = String(serverDescription) + " " + name;
+        doc[F("state_topic")] = topic;
+        doc[F("unique_id")] = String(mqttClientID) + name;
+        if (unitOfMeasurement != "")
+        doc[F("unit_of_measurement")] = unitOfMeasurement;
+        if (deviceClass != "")
+        doc[F("device_class")] = deviceClass;
+        doc[F("expire_after")] = 1800;
+
+        JsonObject device = doc.createNestedObject(F("device")); // attach the sensor to the same device
+        device[F("name")] = serverDescription;
+        device[F("identifiers")] = "wled-sensor-" + String(mqttClientID);
+        device[F("manufacturer")] = F("WLED");
+        device[F("model")] = F("FOSS");
+        device[F("sw_version")] = versionString;
+
+        String temp;
+        serializeJson(doc, temp);
+        DEBUG_PRINTLN(t);
+        DEBUG_PRINTLN(temp);
+
+        mqtt->publish(t.c_str(), 0, true, temp.c_str());
+    }
+
+    void publishMqtt(const char *topic, const char* state) {
+    #ifndef WLED_DISABLE_MQTT
+      //Check if MQTT Connected, otherwise it will crash the 8266
+      if (WLED_MQTT_CONNECTED){
+        char subuf[128];
+        snprintf_P(subuf, 127, PSTR("%s/%s"), mqttDeviceTopic, topic);
+        mqtt->publish(subuf, 0, false, state);
+      }
+    #endif
+    }
+
+  public:
+
+    inline void enable(bool enable) { enabled = enable; }
+
+    inline bool isEnabled() { return enabled; }
+
+    void setup() {
+      // do your set-up here
+      if (i2c_scl<0 || i2c_sda<0) { enabled = false; return; }
+      monitorFound = maxLipo.begin();
+      initDone = true;
+    }
+
+    void loop() {
+      // if usermod is disabled or called during strip updating just exit
+      // NOTE: on very long strips strip.isUpdating() may always return true so update accordingly
+      if (!enabled || strip.isUpdating()) return;
+
+        unsigned long now = millis();
+
+        if (now - lastCheck < minReadingInterval) { return; }
+
+        bool shouldUpdate = now - lastSend > maxReadingInterval;
+
+        float battVoltage = maxLipo.cellVoltage();
+        float battPercent = maxLipo.cellPercent();
+        lastCheck = millis();
+        firstReadComplete = true;
+
+        if (shouldUpdate)
+        {
+          lastBattVoltage = roundf(battVoltage * powf(10, VoltageDecimals)) / powf(10, VoltageDecimals);
+          lastBattPercent = roundf(battPercent * powf(10, PercentDecimals)) / powf(10, PercentDecimals);
+          lastSend = millis();
+
+          publishMqtt("batteryVoltage", String(lastBattVoltage, VoltageDecimals).c_str());
+          publishMqtt("batteryPercent", String(lastBattPercent, PercentDecimals).c_str());
+          DEBUG_PRINTLN(F("Battery Voltage: ") + String(lastBattVoltage, VoltageDecimals) + F("V"));
+          DEBUG_PRINTLN(F("Battery Percent: ") + String(lastBattPercent, PercentDecimals) + F("%"));
+        }
+    }
+
+    void onMqttConnect(bool sessionPresent)
+    {
+        if (WLED_MQTT_CONNECTED && !mqttInitialized)
+        {
+            _mqttInitialize();
+            mqttInitialized = true;
+        }
+    }
+
+    inline float getBatteryVoltageV() {
+        return (float) lastBattVoltage;
+    }
+
+    inline float getBatteryPercent() {
+        return (float) lastBattPercent;
+    }
+
+    void addToJsonInfo(JsonObject& root)
+    {
+      // if "u" object does not exist yet wee need to create it
+      JsonObject user = root["u"];
+      if (user.isNull()) user = root.createNestedObject("u");
+
+
+      JsonArray battery_json = user.createNestedArray(F("Battery Monitor"));
+      if (!enabled) {
+        battery_json.add(F("Disabled"));
+      }
+      else if(!monitorFound) {
+        battery_json.add(F("MAX17048 Not Found"));
+      }        
+      else if (!firstReadComplete) {
+        // if we haven't read the sensor yet, let the user know
+        // that we are still waiting for the first measurement
+        battery_json.add((USERMOD_MAX17048_FIRST_MONITOR_AT - millis()) / 1000);
+        battery_json.add(F(" sec until read"));
+      } else {
+        battery_json.add(F("Enabled"));
+        JsonArray voltage_json = user.createNestedArray(F("Battery Voltage"));
+        voltage_json.add(lastBattVoltage);
+        voltage_json.add(F("V"));
+        JsonArray percent_json = user.createNestedArray(F("Battery Percent"));
+        percent_json.add(lastBattPercent);
+        percent_json.add(F("%"));
+      }
+    }
+
+    void addToJsonState(JsonObject& root)
+    {
+        JsonObject usermod = root[FPSTR(_name)];
+        if (usermod.isNull())
+        {
+        usermod = root.createNestedObject(FPSTR(_name));
+        }
+        usermod[FPSTR(_enabled)] = enabled;
+    }
+
+    void readFromJsonState(JsonObject& root)
+    {
+        JsonObject usermod = root[FPSTR(_name)];
+        if (!usermod.isNull())
+        {
+            if (usermod[FPSTR(_enabled)].is<bool>())
+            {
+                enabled = usermod[FPSTR(_enabled)].as<bool>();
+            }
+        }
+    }
+
+    void addToConfig(JsonObject& root)
+    {
+      JsonObject top = root.createNestedObject(FPSTR(_name));
+      top[FPSTR(_enabled)] = enabled;
+      top[FPSTR(_maxReadInterval)] = maxReadingInterval;
+      top[FPSTR(_minReadInterval)] = minReadingInterval;
+      top[FPSTR(_HomeAssistantDiscovery)] = HomeAssistantDiscovery;
+      DEBUG_PRINT(F(_name));
+      DEBUG_PRINTLN(F(" config saved."));
+    }
+
+    bool readFromConfig(JsonObject& root)
+    {
+      JsonObject top = root[FPSTR(_name)];
+
+      if (top.isNull()) {
+        DEBUG_PRINT(F(_name));
+        DEBUG_PRINTLN(F(": No config found. (Using defaults.)"));
+        return false;
+      }
+
+      bool configComplete = !top.isNull();
+
+      configComplete &= getJsonValue(top[FPSTR(_enabled)], enabled);
+      configComplete &= getJsonValue(top[FPSTR(_maxReadInterval)], maxReadingInterval, USERMOD_MAX17048_MAX_MONITOR_INTERVAL);
+      configComplete &= getJsonValue(top[FPSTR(_minReadInterval)], minReadingInterval, USERMOD_MAX17048_MIN_MONITOR_INTERVAL);
+      configComplete &= getJsonValue(top[FPSTR(_HomeAssistantDiscovery)], HomeAssistantDiscovery, false);
+
+      DEBUG_PRINT(FPSTR(_name));
+      if (!initDone) {
+        // first run: reading from cfg.json
+        DEBUG_PRINTLN(F(" config loaded."));
+      } else {
+        DEBUG_PRINTLN(F(" config (re)loaded."));
+        // changing parameters from settings page
+      }
+
+      return configComplete;
+    }
+
+    uint16_t getId()
+    {
+      return USERMOD_ID_MAX17048;
+    }
+
+};
+
+
+// add more strings here to reduce flash memory usage
+const char Usermod_MAX17048::_name[]    PROGMEM = "Adafruit MAX17048 Battery Monitor";
+const char Usermod_MAX17048::_enabled[] PROGMEM = "enabled";
+const char Usermod_MAX17048::_maxReadInterval[] PROGMEM = "max-read-interval-ms";
+const char Usermod_MAX17048::_minReadInterval[] PROGMEM = "min-read-interval-ms";
+const char Usermod_MAX17048::_HomeAssistantDiscovery[] PROGMEM = "HomeAssistantDiscovery";

wled00/const.h

@@ -173,6 +173,7 @@
 #define USERMOD_ID_ANIMARTRIX            45     //Usermod "usermod_v2_animartrix.h"
 #define USERMOD_ID_HTTP_PULL_LIGHT_CONTROL 46   //usermod "usermod_v2_HttpPullLightControl.h"
 #define USERMOD_ID_TETRISAI              47     //Usermod "usermod_v2_tetris.h"
+#define USERMOD_ID_MAX17048              48     //Usermod "usermod_max17048.h"
 
 //Access point behavior
 #define AP_BEHAVIOR_BOOT_NO_CONN          0     //Open AP when no connection after boot

wled00/pin_manager.h

@@ -61,7 +61,8 @@ enum struct PinOwner : uint8_t {
   UM_Audioreactive     = USERMOD_ID_AUDIOREACTIVE,      // 0x20 // Usermod "audio_reactive.h"
   UM_SdCard            = USERMOD_ID_SD_CARD,            // 0x25 // Usermod "usermod_sd_card.h"
   UM_PWM_OUTPUTS       = USERMOD_ID_PWM_OUTPUTS,        // 0x26 // Usermod "usermod_pwm_outputs.h"
-  UM_LDR_DUSK_DAWN     = USERMOD_ID_LDR_DUSK_DAWN       // 0x2B // Usermod "usermod_LDR_Dusk_Dawn_v2.h"
+  UM_LDR_DUSK_DAWN     = USERMOD_ID_LDR_DUSK_DAWN,      // 0x2B // Usermod "usermod_LDR_Dusk_Dawn_v2.h"
+  UM_MAX17048          = USERMOD_ID_MAX17048            // 0x2F // Usermod "usermod_max17048.h"
 };
 static_assert(0u == static_cast<uint8_t>(PinOwner::None), "PinOwner::None must be zero, so default array initialization works as expected");