C/C++ • Raspberry pi 4 mcp3008 C++ coding

Code:

#include <wiringPi.h>#include <stdio.h>#include <unistd.h>int readMCP3008(int &channel);#define CHANNELS 4#define SPI_CHANNEL 0#define REFERENCE_VOLTAGE 5.0int readMCP3008(int channel) {    if (channel < 0 || channel >= CHANNELS) {        fprintf(stderr, "Invalid channel.\n");        return -1;    }    unsigned char buffer[3];    buffer[0] = 0b11000000 | ((channel & 0x07) << 3);    buffer[1] = 0;    buffer[2] = 0;    wiringPiSPIDataRW(SPI_CHANNEL, buffer, 3);    int result = ((buffer[0] & 0x01) << 9) | (buffer[1] << 1) | ((buffer[2] & 0x80) >> 7);    return result;}int main() {    if (wiringPiSetup() == -1) {        fprintf(stderr, "Error initializing WiringPi.\n");        return 1;    }    int spiHandle = wiringPiSPISetup(SPI_CHANNEL, 1000000); // Default SPI speed    if (spiHandle == -1) {        fprintf(stderr, "Error initializing SPI.\n");        return 1;    }    FILE *file = fopen("mcp3008_data.txt", "w");    if (file == NULL) {        fprintf(stderr, "Error opening file for writing.\n");        return 1;    }       const int numSamples = 100; // Adjust as needed    for (int sample = 0; sample < numSamples; sample++) {        double value0 = (readMCP3008(0) * REFERENCE_VOLTAGE / 1023.0) - 1.5;        double value1 = (readMCP3008(1) * REFERENCE_VOLTAGE / 1023.0) - 1.5;        double value2 = (readMCP3008(2) * REFERENCE_VOLTAGE / 1023.0) - 1.5;        double value3 = (readMCP3008(3) * REFERENCE_VOLTAGE / 1023.0) - 1.5;        fprintf(file, "%.2f,%.2f,%.2f,%.2f", value0, value1, value2, value3);        fprintf(file, "\n");         usleep(100000); // 100,000 microseconds = 100 milliseconds (adjust as needed)    }       fclose(file);    return 0;}

Code:

g++ -Wall -o "mcp3008_read" "mcp3008_read.cpp" (/home/*/Desktop dizininde)mcp3008_read.cpp: In function ‘int readMCP3008(int)’:mcp3008_read.cpp:27:5: error: ‘wiringPiSPIDataRW’ was not declared in this scope   27 |     wiringPiSPIDataRW(SPI_CHANNEL, buffer, 3);      |     ^~~~~~~~~~~~~~~~~mcp3008_read.cpp: In function ‘int main()’:mcp3008_read.cpp:41:21: error: ‘wiringPiSPISetup’ was not declared in this scope; did you mean ‘wiringPiSetup’?   41 |     int spiHandle = wiringPiSPISetup(SPI_CHANNEL, 1000000); // Default SPI speed      |                     ^~~~~~~~~~~~~~~~      |                     wiringPiSetup`