Mindboards

Code: Select all

//Name this "20X2 lib.nxc"
void ReadPicaxe(byte port, byte addr, byte reg, byte cnt, byte& outbuf[])
{
  byte cmdbuf[];  // register number holder
	int             loop;
	byte            nByteReady = 0;

  ArrayBuild(cmdbuf, addr, reg);

  loop = STAT_COMM_PENDING;              //Wait until bus is free
  while (loop == STAT_COMM_PENDING ){    //        ''
    loop = I2CStatus(port, nByteReady);  //        ''
  }                                      //        ''

  I2CBytes(port, cmdbuf, cnt, outbuf)    //Read the registers
}

void WritePicaxe(byte port, byte addr, byte reg, byte data[])
{
  byte result = -1;            // default: error value
  byte cmdbuf[];               // register number holder
	int loop, n, nByteReady;

  ArrayBuild(cmdbuf, addr, reg, data);

  loop = STAT_COMM_PENDING;              //Wait until bus is free
  while (loop == STAT_COMM_PENDING ){    //        ''
    loop = I2CStatus(port, nByteReady);  //        ''
  }                                      //        ''
  
  n = I2CWrite(port, 0, cmdbuf);        //When the I2C bus is ready, send the message you built
  while (I2CStatus(port, nByteReady) ==  STAT_COMM_PENDING); //Wait until bus is free
}

Code: Select all

ReadPicaxe(Port, Address, Register, number of bytes to read, returned array);
WritePicaxe(Port, Address, Register, Data array);

Code: Select all

#include "20X2 lib.nxc"

#define PICAXEPort S1
#define PICAXEaddr 0x30

byte Result[];
byte Data[8];
byte i;

task main(){
  SetSensorLowspeed(PICAXEPort);
  while(true){
    i=0;
    repeat(8){
      Data[i]=Data[Random(8)]*(Random(7)+1)+1;
      i++;
    }

    WritePicaxe(PICAXEPort, PICAXEaddr, 0x0F, Data);
    
    ReadPicaxe(PICAXEPort, PICAXEaddr, 0x0F, 8, Result);

    i=0;
    repeat(8){
      TextOut(0,(56-(i*8)), "   ");
      NumOut(0,(56-(i*8)), Result[i]);
      i++;
    }

    Wait(250);
  }
}