Echelon Neuron C Manual do Utilizador descarregar pdf (Página 47)

Neuron C Programmer’s Guide 35

// since a lower value means more light.

currentBrightness -= input_value;

// Look for underflow or overflow

if (currentBrightness < MAX_BRIGHTNESS)

currentBrightness = MAX_BRIGHTNESS;

else if (currentBrightness > MIN_BRIGHTNESS)

currentBrightness = MIN_BRIGHTNESS;

// Change the triac setting to the

// desired brightness level

io_out(ioLampTriac, currentBrightness);

}

Example 3: Seven-Segment LED Display Interface

The following example shows how to connect multi-character displays to the

neurowire port. The display has an 8-bit configuration register and a 24-bit

display register. This configuration can be defined as follows:

IO_2 output bit ioEnable = 1;

IO_8 neurowire master select(IO_2) ioDisplay;

unsigned char displayReg[3];

unsigned char configReg;

void refreshDisplay() {

__lock {

io_out(ioDisplay, &configReg, 8);

io_out(ioDisplay, displayReg, 24);

}

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Echelon Neuron C Manual do Utilizador Página 47