From e56a3a381d8e8f3c71615d7932d4dc627c19c3f8 Mon Sep 17 00:00:00 2001
From: Ollo <Ollo@Mobile>
Date: Fri, 29 Nov 2024 22:59:58 +0100
Subject: [PATCH] Add LED FAN visualization

---
 include/controller.h |  3 +++
 platformio.ini       |  3 ++-
 src/main.cpp         | 24 ++++++++++++++++++++++++
 3 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/include/controller.h b/include/controller.h
index 031a0b7..eba3a75 100644
--- a/include/controller.h
+++ b/include/controller.h
@@ -16,4 +16,7 @@
 
 #define GPIO_DS18B20    D2  /**< One-Wire used for Dallas temperature sensor */
 
+#define GPIO_WS2812_PIN1     D3
+#define WS2812_LEDS1     1
+
 #endif /* End FANLEDCTL_PINS */
\ No newline at end of file
diff --git a/platformio.ini b/platformio.ini
index ef479a2..b9e9b55 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,4 +14,5 @@ board = d1_wroom_02
 framework = arduino
 
 lib_deps = OneWire
-           DallasTemperature
\ No newline at end of file
+           DallasTemperature
+           adafruit/Adafruit NeoPixel
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 282f91d..effc824 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,9 +1,14 @@
 #include <Arduino.h>
 #include <DallasTemperature.h>
 #include <OneWire.h>
+#include <Adafruit_NeoPixel.h>
 #include "controller.h"
 
 
+/******************************************************************************
+ *                                     DEFINES
+ ******************************************************************************/
+
 #define DELAY_TIME            1000 /**< time between measurements [ms] */
 #define MIN_FAN_SPEED_PERCENT 24 /**< minimum fan speed [%] */
 #define MIN_TEMP              25 /**< turn fan off below [deg C] */
@@ -12,6 +17,10 @@
 
 #define TEMP_SENSOR_MEASURE_SERIES  5 /**< Maximum resets */
 
+/******************************************************************************
+ *                            LOCAL VARIABLES
+ ******************************************************************************/
+Adafruit_NeoPixel* pPixels = NULL;
 OneWire oneWire(GPIO_DS18B20);
 DallasTemperature sensors(&oneWire);
 
@@ -25,6 +34,17 @@ void setup() {
   /* Setup FAN Control */
   pinMode(FAN_PIN, OUTPUT);
   pinMode(SIGNAL_PIN, INPUT);
+
+
+  pPixels = new Adafruit_NeoPixel(WS2812_LEDS1, GPIO_WS2812_PIN1, NEO_RGB + NEO_KHZ800);
+
+  pPixels->begin();
+  pPixels->clear();
+  pPixels->fill(pPixels->Color(255,0,0));
+  pPixels->setBrightness(100);
+  pPixels->show();
+
+
   /* Initialize Temperature sensor */
   sensors.begin();
   for(int j=0; j < TEMP_SENSOR_MEASURE_SERIES && sensors.getDeviceCount() == 0; j++)
@@ -96,6 +116,10 @@ void loop() {
     fanSpeedPercent = (100 - MIN_FAN_SPEED_PERCENT) * (temp - MIN_TEMP) / (MAX_TEMP - MIN_TEMP) + MIN_FAN_SPEED_PERCENT;
   }
 
+  pPixels->fill(pPixels->Color(255,0,0));
+  pPixels->setBrightness(fanSpeedPercent);
+  pPixels->show();
+
   Serial.print(fanSpeedPercent);
   Serial.print("%;");
   setFanSpeedPercent(fanSpeedPercent);