连接2个或以上 SPI 装置便不能运作

zerostar

各位大神好,

刚买了1块ESP32 ,TFT 屏, MAX6635 温度计, 打算造温度纪录器,

但连上后, 2者 都未能运作,  上网看了应该是与 SPI SS/CS 有关,

1.     #include <SPI.h>
   
2.     #include "Adafruit_GFX.h"
   
3.     #include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
   
4.     #include "max6675.h"
   
5. 
   
6. 
   
7. 
   
8.     #define BLACK 0x0000
   
9.     #define BLUE 0x001F
   
10.     #define RED 0xF800
    
11.     #define GREEN 0x07E0
    
12.     #define CYAN 0x07FF
    
13.     #define YELLOW 0xFFE0
    
14.     #define WHITE 0xFFFF
    
15. 
    
16. 
    
17.     //TFT setting for NODE32s
    
18. 
    
19.     #define TFT_DC 4 // register select (stands for Data Control perhaps!)
    
20.     #define TFT_SCLK 18 // SPI clock
    
21.     #define TFT_MOSI 23 // SPI Data
    
22.     #define TFT_CS 16 // Display enable (Chip select), if not enabled will not talk on SPI bus
    
23.     #define TFT_RST 0 // Display reset pin, you can also connect this to the Arduino reset
    
24.     Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
    
25. 
    
26.     // MAX6625 setting for node32s
    
27.     int thermoDO = 19; //MISO
    
28.     int thermoCLK = 18;
    
29.     int thermoCS1 = 5;
    
30. 
    
31.     MAX6675 thermocouple1(thermoCLK, thermoCS1, thermoDO);
    
32. 
    
33. 
    
34. 
    
35.     void setup() {
    
36.     Serial.begin(9600);
    
37. 
    
38.     tft.initR(INITR_BLACKTAB);
    
39.     }
    
40. 
    
41.     void loop() {
    
42. 
    
43.     tft.fillScreen(BLACK);
    
44.     tft.setTextColor(BLACK, WHITE);
    
45.     tft.setTextSize(1);
    
46.     tft.setCursor ( 0, 2);
    
47.     delay(2000);
    
48. 
    
49.     tft.print ( thermocouple1.readCelsius());
    
50.     Serial.print("C = ");
    
51.     Serial.println(thermocouple1.readCelsius());
    
52. 
    
53. 
    
54. 
    
55. 
    
56. 
    
57.     }
    
58. 
    
59. 
    

复制代码

有大神可给我建议吗?谢谢

XlinliY.Zhang

你这都是软件模拟，直接换引脚不就行了

zerostar

换什么引脚？？