INA226-USB電壓電流表 功率計程序

INA226-USB電壓電流表   設計可行性資料，親測可用

1. /*
   
2. 程序完善中，我自己本身也沒學過C/C++，完全就是靠感覺寫的代碼，若有BUG屬正常現象
   
3. V1.0版本視頻鏈接https://www.bilibili.com/video/BV1Ev411k7jA
   
4. V3.0版本視頻鏈接https://www.bilibili.com/video/BV1Ea411w7dj
   
5. V5.0版本視頻鏈接https://www.bilibili.com/video/BV11a411F7mX
   
6. 
   
7. 自2020.12.9開始記錄更新歷史
   
8. 
   
9. 2020.12.9-----添加低電流關閉屏幕按鍵代碼并掉電保存狀態
   
10. 2020.12.24----平安夜快樂！優化三個按鍵EEPROM保存部分代碼，避免新的328P芯片第一次上電EEPROM數據問題
    
11. */
    
12. 
    
13. 
    
14. #include <Wire.h>
    
15. #include <INA226.h>
    
16. #include <Adafruit_SSD1306.h>
    
17. #include <EEPROM.h>
    
18. 
    
19. #define SCREEN_WIDTH 128
    
20. #define SCREEN_HEIGHT 32
    
21. #define OLED_RESET    -1
    
22. Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
    
23. 
    
24. #define NUMFLAKES
    
25. 
    
26. static const uint8_t PROGMEM qidong[] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0E,0x00,0x00,0x00,0xE0,0x00,0x03,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x00,0x02,0x00,0xE0,0x00,0x03,0x00,0x00,0x03,0x80,0xE0,0x3E,0x0F,0xE0,0x00,0x0C,0x00,0x07,0x00,0x60,0x00,0x03,0x00,0x00,0x03,0x80,0xE0,0xFF,0x0F,0xF8,0x00,0x0C,0x00,0x03,0xFF,0xFF,0x87,0xFF,0xFF,0x80,0x03,0x80,0xE1,0xC1,0x0E,0x3C,0x0F,0xFF,0xF8,0x01,0xBF,0xFF,0x87,0xFF,0xFF,0x80,0x03,0x80,0xE3,0x80,0x0E,0x0E,0x0F,0xFF,0xF8,0x00,0x81,0x00,0x00,0x03,0x00,0x00,0x03,0x80,0xE3,0x80,0x0E,0x0E,0x0C,0x0C,0x18,0x00,0x03,0x98,0x00,0x03,0x00,0x00,0x03,0x80,0xE3,0x80,0x0E,0x0E,0x0C,0x0C,0x18,0x0C,0x06,0x0C,0x01,0xFF,0xFF,0x00,0x03,0x80,0xE3,0xC0,0x0E,0x0C,0x0C,0x0C,0x18,0x0F,0xAC,0x1E,0x01,0xFF,0xFF,0x00,0x03,0x80,0xE1,0xE0,0x0E,0x1C,0x0F,0xFF,0xF8,0x03,0x1F,0xFF,0x80,0x03,0x00,0x00,0x03,0x80,0xE0,0xF8,0x0F,0xF8,0x0F,0xFF,0xF8,0x01,0x1C,0x01,0x0F,0xFF,0xFF,0xC0,0x03,0x80,0xE0,0x7E,0x0F,0xFC,0x0C,0x0C,0x18,0x00,0x00,0x08,0x0F,0xFF,0xFF,0xC0,0x03,0x80,0xE0,0x1F,0x0E,0x1E,0x0C,0x0C,0x18,0x00,0x0C,0xCC,0x00,0x0E,0x00,0x00,0x03,0x80,0xE0,0x07,0x0E,0x0F,0x0C,0x0C,0x18,0x01,0x0C,0xCC,0x00,0x1D,0x82,0x00,0x03,0x80,0xE0,0x03,0x8E,0x07,0x0F,0xFF,0xF8,0x03,0x8C,0xCC,0x00,0x39,0x87,0x80,0x03,0x80,0xE0,0x03,0x8E,0x07,0x0F,0xFF,0xF8,0x03,0x0C,0xCC,0x00,0x70,0xCE,0x00,0x03,0x80,0xC0,0x03,0x8E,0x07,0x0C,0x0C,0x18,0x03,0x0C,0xCC,0x01,0xF0,0xF8,0x00,0x01,0xC1,0xC0,0x03,0x8E,0x0E,0x0C,0x0C,0x02,0x07,0x0C,0xCC,0x0F,0xB0,0x70,0x00,0x01,0xE3,0x83,0x0F,0x0E,0x1E,0x00,0x0C,0x01,0x86,0x18,0xCC,0x87,0x30,0x38,0x00,0x00,0xFF,0x03,0xFE,0x0F,0xFC,0x00,0x0C,0x03,0x8E,0x38,0xCC,0xC4,0x31,0x1E,0x00,0x00,0x3C,0x00,0xF8,0x0F,0xE0,0x00,0x0F,0xFF,0x0E,0xF0,0xCF,0xC0,0x3F,0x0F,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0xFE,0x02,0x60,0xCF,0x80,0x7E,0x03,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,};
    
27. 
    
28. INA226 ina;
    
29. 
    
30. unsigned long previousMillis = 0;
    
31. unsigned long interval = 50;
    
32. float shuntvoltage = 0;
    
33. float busvoltage = 0;
    
34. float current_mA = 0;
    
35. float loadvoltage = 0;
    
36. int SECONDS;
    
37. int MINUTES;
    
38. int HOURS;
    
39. char flag1=1;
    
40. char flag2=1;
    
41. char flag3=1;
    
42. bool temp1=0;
    
43. bool temp2=0;
    
44. double lasttime;
    
45. double mah = 0;
    
46. double mwh = 0;
    
47. bool screen = 1;
    
48. double screentime;
    
49. bool state = 0;
    
50. int page = 0;
    
51. bool eeprom = 0;
    
52. bool AlwayOn =0;
    
53. 
    
54. int ShuaXinShiJian = 0;
    
55. 
    
56. 
    
57. void setup() {
    
58.   int value;
    
59.   int address = 0;
    
60. //  EEPROM.get(512,value);
    
61.   value = EEPROM.read(512);
    
62.     if (value ==255){
    
63.       Serial.print(value);Serial.println("test");
    
64.       while(address<=512)
    
65.     {
    
66.       EEPROM.write(address,0);
    
67.       address++;
    
68.     }
    
69.   }
    
70.   
    
71.   display.begin(SSD1306_SWITCHCAPVCC, 0x3C, false, false);
    
72.   EEPROM.get(0,temp1);
    
73.   EEPROM.get(2,temp2);
    
74.   EEPROM.get(4,AlwayOn);
    
75.   
    
76.   pinMode(A0,INPUT);
    
77.   pinMode(A1,INPUT);
    
78. 
    
79. //********************啟動畫面***********************
    
80.   setContrast (&display, 0);
    
81.   display.clearDisplay();
    
82.   display.drawBitmap(0,0,qidong,128,62,WHITE);
    
83.   display.drawRect(0,0,128,32,WHITE);
    
84.   display.display();
    
85.   delay(1000);
    
86. 
    
87. //**************************************************
    
88.   Serial.begin(115200);
    
89. 
    
90.   ina.begin();
    
91. 
    
92.   ina.configure(INA226_AVERAGES_1, INA226_BUS_CONV_TIME_1100US, INA226_SHUNT_CONV_TIME_1100US, INA226_MODE_SHUNT_BUS_CONT);
    
93. 
    
94.   ina.calibrate(0.01, 4);
    
95. 
    
96.   ina.enableOverPowerLimitAlert();
    
97.   ina.setPowerLimit(0.130);
    
98.   ina.setAlertLatch(true);
    
99. }
    
100. 
     
101. //--------------主循環函數----------------
     
102. void loop() {
     
103. 
     
104.   unsigned long currentMillis = millis();
     
105.   if (currentMillis - previousMillis >= interval)
     
106.   {
     
107.     previousMillis = currentMillis;
     
108.     ina226values();
     
109.     displaydata();
     
110. }
     
111. 
     
112.   SECONDS = (millis () / 1000) % 60;
     
113.   MINUTES = (millis () / 1000) % 3600/60;
     
114.   HOURS = (millis () / 1000) % (24*3600)/3600;
     
115. 
     
116.   setbright();      
     
117.   Page();
     
118.   SAOn();
     
119.   if (AlwayOn){
     
120.     screenstate();
     
121.   }
     
122. 
     
123. 
     
124. 
     
125. //  Serial.print("     ");
     
126. //  Serial.print(millis() - screentime);
     
127. //  Serial.print("     ");
     
128. //  Serial.print(current_mA);
     
129. //  Serial.print("     ");
     
130. //  Serial.print(screen);
     
131. //  Serial.print("     ");
     
132. //  Serial.println(state);
     
133. //  Serial.println("     ");
     
134.   
     
135. }
     
136. 
     
137. //-------------------屏幕顯示部分------------------
     
138. void displaydata() {
     
139.   if (screen){
     
140. 
     
141.   display.clearDisplay();
     
142.   display.setTextSize(2);
     
143.   display.setTextColor(SSD1306_WHITE);
     
144. 
     
145. if (loadvoltage < 10){
     
146.   display.setCursor(0,0);
     
147.   display.print(loadvoltage ,3);
     
148.   display.println("V");
     
149. }
     
150. else {
     
151.   display.setCursor(0,0);
     
152.   display.print(loadvoltage);
     
153.   display.println("V");
     
154. }
     
155.   
     
156.   display.setCursor(0, 18);
     
157.   display.print(current_mA / 1000,3);
     
158.   display.println("A");
     
159. 
     
160. 
     
161.   display.setTextSize(1);
     
162.   display.setTextColor(SSD1306_WHITE);
     
163.   
     
164.   display.setCursor(74, 0);
     
165.   display.print(loadvoltage * current_mA / 1000,4);
     
166.   display.println("W");
     
167. 
     
168.   if (!AlwayOn){
     
169.     display.drawLine(0,15,69,15,WHITE);
     
170.   }
     
171. 
     
172. //———————————————————————————————
     
173. 
     
174.   if (page==0){
     
175.     if (mah < 100){
     
176.     display.setCursor(74, 8);
     
177.     display.print(mah,2);
     
178.     display.println("mAh");
     
179.     }
     
180.     else if (mah < 1000){
     
181.     display.setCursor(74, 8);
     
182.     display.print(mah,1);
     
183.     display.println("mAh");
     
184.     }
     
185.     else {
     
186.     display.setCursor(74, 8);
     
187.     display.print(mah / 1000,3);
     
188.     display.println("Ah");
     
189.     }
     
190.   
     
191.   
     
192.     if (mwh < 100){
     
193.     display.setCursor(74, 16);
     
194.     display.print(mwh,2);
     
195.     display.println("mWh");
     
196.     }
     
197.       else if (mwh < 1000){
     
198.     display.setCursor(74, 16);
     
199.     display.print(mwh ,1);
     
200.     display.println("mWh");
     
201.       }
     
202.       else {
     
203.     display.setCursor(74, 16);
     
204.     display.print(mwh / 1000 ,3);
     
205.     display.println("Wh");
     
206.       }
     
207.   }
     
208.   else {
     
209.     display.setCursor(74, 8);
     
210.     display.print("D+:");
     
211.     int V1 = analogRead(A0);               
     
212.     float vol1 = V1*(3.966 / 1023.0);
     
213.     display.print(vol1);
     
214.     display.println("V");
     
215.     Serial.println(digitalRead(A0));
     
216. 
     
217.     display.setCursor(74, 16);
     
218.     display.print("D-:");
     
219.     int V2 = analogRead(A1);               
     
220.     float vol2 = V2*(3.966 / 1023.0);
     
221.     display.print(vol2);
     
222.     display.println("V");
     
223.   }
     
224. 
     
225. //----------------運行時間顯示----------------
     
226. 
     
227.   display.setCursor(74, 24);
     
228.   
     
229.   if (HOURS < 10){
     
230.     display.print("0");
     
231.     display.print(HOURS);
     
232.     }
     
233.     else{display.print(HOURS);}
     
234.     display.print(":");
     
235.   if (MINUTES < 10){
     
236.     display.print("0");
     
237.     display.print(MINUTES);
     
238.     }
     
239.     else{display.print(MINUTES);}
     
240.     display.print(":");
     
241.   if (SECONDS < 10){
     
242.     display.print("0");
     
243.     display.print(SECONDS);
     
244.     }
     
245.     else{display.print(SECONDS);}
     
246.   
     
247.   
     
248.     display.display();
     
249.   
     
250.     }
     
251.     else {
     
252.     display.clearDisplay();
     
253.     display.display();
     
254.     }
     
255. }
     
256. 
     
257. //--------------------數據計算---------------------
     
258. 
     
259. void ina226values() {
     
260.   shuntvoltage = ina.readShuntVoltage();
     
261.   busvoltage = ina.readBusVoltage();
     
262.   current_mA = ina.readShuntCurrent() * 1000;
     
263.   loadvoltage = busvoltage + (shuntvoltage / 1000);
     
264. 
     
265.     if (loadvoltage < 0){
     
266.     loadvoltage = - loadvoltage;
     
267.   }
     
268.   if (current_mA < 0){
     
269.     current_mA = -current_mA;
     
270.   }
     
271. 
     
272.   if (millis() - lasttime >= 500 ){
     
273. 
     
274.   if ((current_mA >= 5)){
     
275.     mah = mah + (current_mA * ((millis() - lasttime)) / 1000)/3600;
     
276.     mwh = mwh +(loadvoltage * ((current_mA * ((millis() - lasttime)) / 1000)/3600));
     
277.     lasttime = millis();
     
278.    
     
279.     }
     
280.   }
     
281. }
     
282. 
     
283. 
     
284. 
     
285. void setContrast(Adafruit_SSD1306 *display, uint8_t contrast) {
     
286.     display->ssd1306_command(SSD1306_SETCONTRAST);
     
287.     display->ssd1306_command(contrast);
     
288. }
     
289. 
     
290. 
     
291. //---------------屏幕亮度按鍵控制--------------
     
292. 
     
293. void setbright(){
     
294.   if(digitalRead(8)==0&&flag1==1)
     
295.   {
     
296.     delay(5);flag1=0;
     
297.     if(digitalRead(8)==0){
     
298.     temp1=!temp1;
     
299.     EEPROM.put(0,temp1);
     
300.     }
     
301.   }
     
302.   else if(digitalRead(8)==1){
     
303.   flag1=1;
     
304.   }
     
305.   switch (temp1){
     
306.     case 1:setContrast (&display, 255);break;
     
307.     case 0:setContrast (&display, 0);break;
     
308.   }
     
309. }
     
310. 
     
311. //-----------------頁面切換------------------
     
312. void Page(){
     
313.   if(digitalRead(9)==0&&flag2==1)
     
314.   {
     
315.     delay(5);flag2=0;
     
316.     if(digitalRead(9)==0){
     
317.     temp2=!temp2;
     
318.     EEPROM.put(2,temp2);
     
319.     }
     
320.   }
     
321.   else if(digitalRead(9)==1){
     
322.   flag2=1;
     
323.   }
     
324.   switch (temp2){
     
325.     case 0:page=0;break;
     
326.     case 1:page=1;break;
     
327.   }
     
328. }
     
329. //-------------按鍵切換是否開啟低電流屏幕保護-------------
     
330. void SAOn(){
     
331.   if(digitalRead(10)==0&&flag3==1)
     
332.   {
     
333.     delay(5);flag3=0;
     
334.     if(digitalRead(10)==0){
     
335.     AlwayOn=!AlwayOn;
     
336.     screen = 1;
     
337.     screentime = millis();
     
338.     EEPROM.put(4,AlwayOn);
     
339.     }
     
340.   }
     
341.   else if(digitalRead(10)==1){
     
342.     flag3=1;
     
343.   }
     
344.   switch (AlwayOn){
     
345.     case 0:;break;
     
346.     case 1:;break;
     
347.   }
     
348. }
     
349. //-------------電流低于5mA  5s后關閉屏幕-------------
     
350. void screenstate(){
     
351.   if (current_mA <= 5){
     
352.     if (millis() - screentime > 5000){
     
353.       screen = 0;
     
354.     }
     
355.     if (state){
     
356.     screentime = millis();
     
357.     state = 0;
     
358.     }
     
359.     if (millis() - screentime < 5000){
     
360.       screen = 1;
     
361.     }
     
362.   }
     
363.   else {
     
364.     screen = 1;
     
365.     state = 1;
     
366.   }
     
367. }
     

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