無法通過i2c總線發送4個電位器值

我試圖通過發送4個電位器值。 i2c通過另一個arduino的虛擬線路接收到這些值後。我的設置由3個arduinos組成。 1st arduino連接到變送器和4個電位器，它通過發送值。 tx通過virtualwire。 2nd arduino由接收器組成。 3rd arduino由4個舵機組成。第二和第三個arduino通過耦合。一輛i2c巴士。我不能發送potrentiometer的所有4個值。不過，我可以發送一個電位計的值。這是我的素描。無法通過i2c總線發送4個電位器值

#include <VirtualWire.h>                  
    #include <Wire.h>                    

    int Sensor1Data;                    // VARIABLE WHERE THE ANALOG VALUE OF POT 1 GOT STORED BY THE TX 
    int Sensor2Data;                    // VARIABLE WHERE THE ANALOG VALUE OF POT 2 GOT STORED BY THE TX 
    int Sensor3Data;                    // VARIABLE WHERE THE ANALOG VALUE OF POT 3 GOT STORED BY THE TX 
    int Sensor4Data;                    // VARIABLE WHERE THE ANALOG VALUE OF POT 4 GOT STORED BY THE TX 
    int data[4]; 

    char StringReceived[22]; 

    void setup() 
    { 

    Wire.begin();                      // START I2C (WIRE.h) 
    vw_setup(6000);                   // BAUDERATE FOR VIRTUALWIRE 
    vw_set_rx_pin(11);                  // DEFINE PIN FOR VIRTUALWIRE 
    vw_rx_start();                   // START VIRTUALWIRE           
    } 

    void loop() 
    { 

    uint8_t buf[VW_MAX_MESSAGE_LEN]; 
    uint8_t buflen = VW_MAX_MESSAGE_LEN; 

    if (vw_get_message(buf, &buflen)) {              // GET THE DATA 

    int i; 
    for (i = 0; i < buflen; i++) 
    {              // CHECKSUM OK ? GET MESSAGE   
     StringReceived[i] = char(buf[i]);             // FILL THE ARRAY 
    } 
    sscanf(StringReceived, "%d,%d,%d,%d,%d,%d",&Sensor1Data, &Sensor2Data,&Sensor3Data,&Sensor4Data); // Converts a string to an array 

    Sensor1Data = map(Sensor1Data, 0, 1023, 0, 180);             // MAPS THE 8BIT SERVODATA TO SERVOMIN/MX 
    Sensor2Data = map(Sensor2Data, 0, 1023, 26, 160);             // MAPS THE 8BIT SERVODATA TO SERVOMIN/MX 
    Sensor3Data = map(Sensor3Data, 0, 1023, 26, 160);             // MAPS THE 8BIT SERVODATA TO SERVOMIN/MX 
    Sensor4Data = map(Sensor4Data, 0, 1023, 26, 160); 
    data[0] = Sensor1Data; 
    data[1] = Sensor2Data; 
    data[2] = Sensor3Data; 
    data[3] = Sensor4Data;// MAPS THE 8BIT SERVODATA TO SERVOMIN/MX 

    Wire.beginTransmission(8);                  // OPENS AN I2C ON PIN 8 
    Wire.write(data,4); 
// SEND POT 1 VALUE TO I2C DEVICE 8 
    Wire.endTransmission();                   // END TRANSMISSION 

// SEND POT 1 VALUE TO I2C DEVICE 8 

    } 

     memset(StringReceived, 0, sizeof(StringReceived));             // RESET STRING RECEIVED 
}`

這個草圖顯示

 no matching function for call to 'TwoWire::write(int [4], int)'

來源

2017-02-23 Anant Vikram Singh

你不能TwoWire::write發送整數數組的錯誤。它只接受一個字節或一個字節數組。

因爲你的數組值不大於160，所以你可以把你的數組改成一個字節數組。

變化：

int data[4];

到：

byte data[4];

來源

2017-02-23 17:56:05

無法通過i2c總線發送4個電位器值

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