Extreme NXT: Extending the LEGO MINDSTORMS NXT to the Next Level, Second Edition

Appendix C. Code Listings

Arranged by chapter, here are the complete listings of the NXC programs. You can also download them from the book website, in the Source Code/Download area at http://www.apress.com.

Chapter 13

Example C.1. blinkall.nxc

#define I2Cport S1       // Port number
#define I2CAddr8574 0x70 // I2C address x040 8574 or 0x70 for 8574A
byte WriteBuf[]={I2CAddr8574,0x00}; // write buffer is addr and data

task main() {
  int nbytes;
  SetSensorLowspeed (I2Cport);       // Configure I2C port
  while (true) {
    WriteBuf[1]++;                   // update data byte
    I2CWrite(I2Cport, 0, WriteBuf);  // send buffer
    while(I2CStatus(I2Cport, nbytes)==STAT_COMM_PENDING); // wait
  }
}

Example C.2. low2high.nxc

#define I2Cport S1 // NXT sensor port 1 #define I2CAddr8574 0x40 // 0x40 8574 ...