The NanoBrick.

1#include <Adafruit_GFX.h>    // Core graphics library
2#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
3#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
4#include <SPI.h>
5#include "Arduino_BMI270_BMM150.h"
6#include <Arduino_LPS22HB.h>
7#include <Arduino_HS300x.h>
8#include <Arduino_APDS9960.h>
9#include <PDM.h>
10
11#define TFT_CS          8
12#define TFT_RST        10 // Or set to -1 and connect to Arduino RESET pin
13#define TFT_DC          9
14
15Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
16
17int counter = 0;
18int buttonPin = 2;
19int buttonState;
20int State = LOW;
21int instances = 11; // The amount of menu logic options.
22float X, Y, Z;
23int R, G, B;
24float proxy = 0;
25
26unsigned long lastDebounceTime = 0;
27unsigned long debounceDelay = 50;
28
29short sampleBuffer[256];
30volatile int samplesRead;
31
32
33void setup() {
34  // put your setup code here, to run once:
35  tft.initR(INITR_MINI160x80); 
36  tft.setRotation(2);
37  tft.setTextWrap(true);
38  tft.fillScreen(ST7735_BLACK);
39  pinMode(buttonPin, INPUT_PULLUP);
40  pinMode(LEDR, OUTPUT);
41  pinMode(LEDG, OUTPUT);
42  pinMode(LEDB, OUTPUT);
43  digitalWrite(LEDR, HIGH);         
44  digitalWrite(LEDG, HIGH);      
45  digitalWrite(LEDB, HIGH); 
46  IMU.begin();
47  BARO.begin();
48  HS300x.begin();
49  APDS.begin();
50  PDM.onReceive(onPDMdata);
51  PDM.begin(1, 16000);
52}
53void loop() {
54  // put your main code here, to run repeatedly:
55  managebutton();
56  modeManage(State);
57}
58void managebutton(){
59  int reading = digitalRead(buttonPin);
60
61  if (reading != State) {
62    lastDebounceTime = millis();
63  }
64
65  if ((millis() - lastDebounceTime) > debounceDelay) {
66    if (reading != buttonState) {
67      buttonState = reading;
68
69    }
70  }
71  State = reading;
72}
73void modeManage(int status){
74  if (status == LOW){
75    if (counter != instances){
76    counter++;
77    tft.fillScreen(ST7735_BLACK);
78    tft.setTextColor(ST77XX_WHITE);
79    }
80    else {
81    counter = 0;
82    }
83  }
84
85  switch (counter) {
86  case 0: runAccelerometer(); break;
87  case 1: runGyroscope(); break;
88  case 2: runPressure(); break;
89  case 3: runAltitude(); break;
90  case 4: runMagnetometer(); break;
91  case 5: runTemperature(); break;
92  case 6: runHumidity(); break;
93  case 7: runColor(); break;
94  case 8: runProxy(); break;
95  case 9: runMicrophone(); break;
96  case 10: runFlashlight(); break;
97  }
98}
99void runAccelerometer(){
100  IMU.readAcceleration(X, Y, Z);
101  tft.setCursor(0, 0);
102  tft.setTextColor(ST77XX_WHITE);
103  tft.setTextSize(1);
104  tft.println("Acceleration");
105  tft.setCursor(0, 50);
106  tft.fillRect(15, 50, 35, 30, ST77XX_BLACK);
107  tft.print("X: ");
108  tft.println(X);
109  analogWrite(LEDR, 255 - axisToPWM(X));
110  tft.print("Y: ");
111  tft.println(Y);
112  analogWrite(LEDG, 255 - axisToPWM(Y));
113  tft.print("Z: ");
114  tft.println(Z);
115  analogWrite(LEDB, 255 - axisToPWM(Z));
116}
117void runGyroscope(){
118  IMU.readGyroscope(X, Y, Z);
119  tft.setCursor(0, 0);
120  tft.setTextColor(ST77XX_WHITE);
121  tft.setTextSize(1);
122  tft.println("Gyroscope");
123  tft.setCursor(0, 50);
124  tft.fillRect(15, 50, 50, 30, ST77XX_BLACK);
125  tft.print("X: ");
126  tft.println(X);
127  analogWrite(LEDR, 255 - fabs(X));
128  tft.print("Y: ");
129  tft.println(Y);
130  analogWrite(LEDG, 255 - fabs(Y));
131  tft.print("Z: ");
132  tft.println(Z);
133  analogWrite(LEDB, 255 - fabs(Z));
134}
135void runPressure(){
136  float P = BARO.readPressure();
137  tft.setCursor(0, 0);
138  tft.setTextColor(ST77XX_WHITE);
139  tft.setTextSize(1);
140  tft.println("Air Pressure");
141  tft.setCursor(0, 50);
142  tft.fillRect(15, 50, 45, 10, ST77XX_BLACK);
143  tft.print("P: ");
144  tft.print(P);
145  tft.println("  kPa");
146  analogWrite(LEDR, 255 - fabs(P));
147}
148void runAltitude(){
149  float A = BARO.readPressure();
150  float altitude = 44330 * ( 1 - pow(A/101.325, 1/5.255) );
151  float altitudeFeet = altitude * 3.28084;
152  tft.setCursor(0, 0);
153  tft.setTextColor(ST77XX_WHITE);
154  tft.setTextSize(1);
155  tft.println("Altitude");
156  tft.setCursor(0, 50);
157  tft.fillRect(0, 50, 45, 10, ST77XX_BLACK);
158  tft.print(altitudeFeet);
159  tft.println("  ft");
160  analogWrite(LEDG, 255 - fabs(altitudeFeet));
161}
162void runMagnetometer(){
163  IMU.readMagneticField(X, Y, Z);
164  tft.setCursor(0, 0);
165  tft.setTextColor(ST77XX_WHITE);
166  tft.setTextSize(1);
167  tft.println("Magnetometer");
168  tft.setCursor(0, 50);
169  tft.fillRect(15, 50, 45, 30, ST77XX_BLACK);
170  tft.print("X: ");
171  tft.println(X);
172  analogWrite(LEDR, 255 - fabs(X));
173  tft.print("Y: ");
174  tft.println(Y);
175  analogWrite(LEDG, 255 - fabs(Y));
176  tft.print("Z: ");
177  tft.println(Z);
178  analogWrite(LEDB, 255 - fabs(Z));
179}
180void runTemperature(){
181  float CT = HS300x.readTemperature();
182  float FT = (CT * 1.8) + 32;
183  tft.setCursor(0, 0);
184  tft.setTextColor(ST77XX_WHITE);
185  tft.setTextSize(1);
186  tft.println("Temperature");
187  tft.setCursor(0, 50);
188  tft.fillRect(0, 50, 45, 30, ST77XX_BLACK);
189  tft.print(FT);
190  tft.print("  ");
191  tft.write(248);
192  tft.println("F");
193  tft.print(CT);
194  tft.print("  ");
195  tft.write(248);
196  tft.println("C");
197}
198void runHumidity(){
199  float H = HS300x.readHumidity();
200  tft.setCursor(0, 0);
201  tft.setTextColor(ST77XX_WHITE);
202  tft.setTextSize(1);
203  tft.println("Humidity");
204  tft.setCursor(0, 50);
205  tft.fillRect(0, 50, 40, 30, ST77XX_BLACK);
206  tft.print(H);
207  tft.println("  %");
208  analogWrite(LEDB, 255 - fabs(H));
209}
210void runColor(){
211  if (APDS.colorAvailable()){
212  APDS.readColor(R, G, B);
213  }
214  analogWrite(LEDR, 255);
215  analogWrite(LEDG, 255);
216  analogWrite(LEDB, 255);
217  tft.setCursor(0, 0);
218  tft.setTextColor(ST77XX_WHITE);
219  tft.setTextSize(1);
220  tft.println("Light");
221  tft.setCursor(0, 50);
222  tft.fillRect(15, 50, 45, 30, ST77XX_BLACK);
223  tft.print("R: ");
224  tft.println(R);
225  tft.print("G: ");
226  tft.println(G);
227  tft.print("B: ");
228  tft.println(B);
229}
230void runProxy(){
231  if (APDS.proximityAvailable()) {
232    proxy = APDS.readProximity();
233  }
234  analogWrite(LEDR, 255);
235  analogWrite(LEDG, 255);
236  analogWrite(LEDB, 255);
237  tft.setCursor(0, 0);
238  tft.setTextColor(ST77XX_WHITE);
239  tft.setTextSize(1);
240  tft.println("Proximity");
241  tft.setCursor(0, 50);
242  tft.fillRect(35, 50, 45, 20, ST77XX_BLACK);
243  tft.print("Prox: ");
244  tft.println(proxy);
245  tft.setCursor(0, 75);
246  tft.print("Disclaimer: This sensor relies on reflectance. Results will vary with material.");
247}
248void runMicrophone() {
249  if (samplesRead > 0) {
250    long sum = 0;
251    for (int i = 0; i < samplesRead; i++) {
252      sum += abs(sampleBuffer[i]);
253    }
254    int volume = sum / samplesRead;   // average amplitude
255    int ledValue = map(volume, 0, 2000, 0, 255);
256    ledValue = constrain(ledValue, 0, 255);
257
258    analogWrite(LEDR, 255 - ledValue);
259    analogWrite(LEDG, 255 - ledValue);
260    analogWrite(LEDB, 255 - ledValue);
261    tft.setCursor(0, 0);
262    tft.setTextColor(ST77XX_WHITE);
263    tft.setTextSize(1);
264    tft.println("Microphone");
265    tft.setCursor(0, 50);
266    tft.fillRect(25, 50, 45, 20, ST77XX_BLACK);
267    tft.print("Mic: ");
268    tft.println(volume);
269
270    samplesRead = 0;   // reset so next buffer can be processed
271  }
272}
273void runFlashlight() {
274  tft.fillScreen(ST77XX_WHITE);
275  analogWrite(LEDR, 0);
276  analogWrite(LEDG, 0);
277  analogWrite(LEDB, 0);
278}
279int axisToPWM(float v) {
280  v = fabs(v);               // absolute acceleration
281  v = constrain(v, 0, 2);    // typical range when tilting
282  return map(v * 100, 0, 200, 0, 255);
283}
284void onPDMdata() {
285  // query the number of bytes available
286  int bytesAvailable = PDM.available();
287
288  // read into the sample buffer
289  PDM.read(sampleBuffer, bytesAvailable);
290
291  // 16-bit, 2 bytes per sample
292  samplesRead = bytesAvailable / 2;
293}