//*****************************************************************************
//
// Called by the NVIC as a result of SysTick Timer rollover interrupt flag
//
// Checks buttons and calls AppButtonHandler to manage button events.
// Tracks time and auto mode color stepping. Calls AppRainbow to implement
// RGB color changes.
//
//*****************************************************************************
void
SysTickIntHandler(void)
{
static float x;
g_sAppState.ui32Buttons = ButtonsPoll(0,0);
AppButtonHandler();
//
// Auto increment the color wheel if in the AUTO mode. AUTO mode is when
// device is active but user interaction has timed out.
//
if(g_sAppState.ui32Mode == APP_MODE_AUTO) {
g_sAppState.fColorWheelPos += APP_AUTO_COLOR_STEP;
}
//
// Provide wrap around of the control variable from 0 to 1.5 times PI
//
if(g_sAppState.fColorWheelPos > (APP_PI * 1.5f)) {
g_sAppState.fColorWheelPos = 0.0f;
}
if(x < 0.0f) {
g_sAppState.fColorWheelPos = APP_PI * 1.5f;
}
//
// Set the RGB Color based on current control variable value.
//
AppRainbow(0);
}
void
SysTickIntHandler(void)
{
g_sAppState.ulButtons = ButtonsPoll(0,0);
AppButtonHandler();
}
