int main(int argc, char* argv[])
{
gpioInitialise();
int spiHandle = i2cOpen(1, 0x26, 0);
i2cWriteByte(spiHandle, 3);
gpioDelay(100);
i2cClose(spiHandle);
return 0;
}
int main(int argc, char** argv)
{
int count;
uint8_t red = 0;
uint8_t green = 0;
uint8_t blue = 0;
if (argc > 1)
{
for (count = 1; count < argc; count++)
{
printf("argv[%d] = %s\n", count, argv[count]);
if (count == 1) red = atoi(argv[1]);
if (count == 2) green = atoi(argv[2]);
if (count == 3) blue = atoi(argv[3]);
}
}
else
{
printf("please set colour eg 255 0 15\n");
return 0;
}
// open Linux I2C device
i2cOpen();
// set address of the controller
i2cSetAddress(0x53);
writeValue(red++, green++, blue++);
// close Linux I2C device
i2cClose();
return 0;
}
int main(int argc, char *argv[])
{
int i;
int r;
int handle;
char aout;
unsigned char command[2];
unsigned char value[4];
unsigned char str[8];
int j;
int key;
if (gpioInitialise() < 0) return 1;
initscr();
noecho();
cbreak();
nodelay(stdscr, true);
curs_set(0);
printw("PCF8591 + or - to change aout, any other key to quit.");
mvaddstr(10, 0, "Brightness");
mvaddstr(12, 0, "Temperature");
mvaddstr(14, 0, "?");
mvaddstr(16, 0, "Resistor");
refresh();
handle = i2cOpen(1, PCF8591_I2C_ADDR, 0);
command[1] = 0;
aout = 128;
while (1)
{
for (i=0; i<4; i++)
{
command[1] = aout;
command[0] = 0x40 | ((i + 1) & 0x03); // output enable | read input i
i2cWriteDevice(handle, &command, 2);
usleep(20000);
// the read is always one step behind the selected input
value[i] = i2cReadByte(handle);
sprintf(str, "%3d", value[i]);
mvaddstr(10+i+i, 12, str);
value[i] = value[i] / 4;
move(10 + i + i, 16);
for(j = 0; j < 64; j++)
if(j < value[i]) addch('*'); else addch(' ');
}
refresh();
key = getch();
if ((key == '+') || (key == '=')) aout++;
else if ((key == '-') || (key == '_')) aout--;
else if (key != -1) break;
}
endwin();
i2cClose(handle);
gpioTerminate();
return (0);
}
void DataAquisition::run()
{
//Variablendeklaration
int handle = 0;
int dataready = 0;
int winkel_old= 999;
while(1)
{
int dataX_MSB = 0;
int dataX_LSB = 0;
int dataY_MSB = 0;
int dataY_LSB = 0;
int dataZ_MSB = 0;
int dataZ_LSB = 0;
signed short int dataX = 0;
signed short int dataY = 0;
signed short int dataZ = 0;
int winkel = 0;
double tangens = 0;
double dataX_ABS = 0;
double dataZ_ABS = 0;
//i2c
handle = i2cOpen(1,0x55,0);
i2cSwitchCombined(1); // WICHTIG! Enable "Repeated Start"!!
gpioWrite(13,1); // MMA8491_EN = 1
gpioDelay(2000); // Ton (minimales Delay)
i2cWriteByte(handle,0x00);
dataready = i2cReadByte(handle);
if((dataready & 0x08) == 0x08) // Falls neue Daten Verfügbar
{
dataX_MSB = i2cReadByteData(handle,0x01);
dataX_LSB = i2cReadByteData(handle,0x02);
dataY_MSB = i2cReadByteData(handle,0x03);
dataY_LSB = i2cReadByteData(handle,0x04);
dataZ_MSB = i2cReadByteData(handle,0x05);
dataZ_LSB = i2cReadByteData(handle,0x06);
dataX = dataX_LSB + (dataX_MSB << 8);
dataY = dataY_LSB + (dataY_MSB << 8);
dataZ = dataZ_LSB + (dataZ_MSB << 8);
//Absolutwert und Wandlung in Double
dataX_ABS = abs(dataX);
dataZ_ABS = abs(dataZ);
//Berechnung Tangens
tangens = (dataX_ABS)/(dataZ_ABS);
//Berechnung Winkel
winkel = (atan(tangens))*180 / PI;
//Unterscheidung Quadrant
if((dataZ >= 0) & (dataX >= 0)) // Rechts unten
winkel = winkel;
else if((dataZ <= 0) & (dataX >= 0)) // Rechts oben
winkel = 180 - winkel;
else if((dataZ <= 0) & (dataX <= 0)) // Links oben
winkel = 180 + winkel;
else if((dataZ >= 0) & (dataX <= 0)) // Links unten
winkel = 360 - winkel ;
}
i2cClose(handle);
gpioWrite(13,0); // MMA8491_EN = 0
if (winkel < 3 || winkel > 357)
{
winkel = 0;
}
//Filter gegen Stösse und Schläge
if(winkel_old != 999)
{
if(winkel > (winkel_old+10))
{
winkel = (winkel_old+10);
}
else if(winkel < (winkel_old-10))
{
winkel = (winkel_old-10);
}
}
if(fps == "2")
{
if(i%5 == 0)
{
angleArray[(i/5)] = winkel;
}
}
else if(fps == "30")
{
angleArray[i] = winkel;
angleArray[++i] = winkel;
angleArray[++i] = winkel;
}
else
{
angleArray[i] = winkel;
}
winkel_old = winkel;
i++;
msleep(92);
}
}
void I2CGpioHardwareBus::Close()
{
i2cClose(_i2cHandle);
ShutdownGpioBus();
}
