diff options
Diffstat (limited to 'Projects/HotmailNotifier/HotmailNotifier.c')
| -rw-r--r-- | Projects/HotmailNotifier/HotmailNotifier.c | 64 |
1 files changed, 55 insertions, 9 deletions
diff --git a/Projects/HotmailNotifier/HotmailNotifier.c b/Projects/HotmailNotifier/HotmailNotifier.c index 3d467e54a..5a7ebd563 100644 --- a/Projects/HotmailNotifier/HotmailNotifier.c +++ b/Projects/HotmailNotifier/HotmailNotifier.c @@ -60,6 +60,39 @@ USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface = },
};
+/** Counter for the software PWM */
+static volatile uint8_t SoftPWM_Count;
+
+/** Duty cycle for the first software PWM channel */
+static volatile uint8_t SoftPWM_Channel1_Duty;
+
+/** Duty cycle for the second software PWM channel */
+static volatile uint8_t SoftPWM_Channel2_Duty;
+
+/** Duty cycle for the third software PWM channel */
+static volatile uint8_t SoftPWM_Channel3_Duty;
+
+
+/** Interrupt handler for managing the software PWM channels for the LEDs */
+ISR(TIMER0_COMPA_vect, ISR_BLOCK)
+{
+ uint8_t LEDMask = LEDS_ALL_LEDS;
+
+ if (++SoftPWM_Count == 0x1F)
+ SoftPWM_Count = 0;
+
+ if (SoftPWM_Count >= SoftPWM_Channel1_Duty)
+ LEDMask &= ~LEDS_LED1;
+
+ if (SoftPWM_Count >= SoftPWM_Channel2_Duty)
+ LEDMask &= ~LEDS_LED2;
+
+ if (SoftPWM_Count >= SoftPWM_Channel3_Duty)
+ LEDMask &= ~LEDS_LED3;
+
+ LEDs_SetAllLEDs(LEDMask);
+}
+
/** Standard file stream for the CDC interface when set up, so that the virtual CDC COM port can be
* used like any regular character stream in the C APIs
*/
@@ -77,11 +110,21 @@ int main(void) for (;;)
{
- /* Read next character - if a '1' turn on red led, if a '0' turn on green LED */
- if (fgetc(&USBSerialStream) == '1')
- LEDs_SetAllLEDs(LEDS_LED3);
- else
- LEDs_SetAllLEDs(LEDS_LED2);
+ /* Read in next LED colour command from the host */
+ uint8_t ColorUpdate = fgetc(&USBSerialStream);
+
+ /* Top 3 bits select the LED, bottom three control the brightness */
+ uint8_t Channel = (ColorUpdate & 0b11100000);
+ uint8_t Duty = (ColorUpdate & 0b00011111);
+
+ if (Channel & (1 << 5))
+ SoftPWM_Channel1_Duty = Duty;
+
+ if (Channel & (1 << 6))
+ SoftPWM_Channel2_Duty = Duty;
+ + if (Channel & (1 << 7))
+ SoftPWM_Channel3_Duty = Duty;
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
@@ -101,15 +144,18 @@ void SetupHardware(void) /* Hardware Initialization */
LEDs_Init();
USB_Init();
+
+ /* Timer Initialization */
+ OCR0A = 100;
+ TCCR0A = (1 << WGM01);
+ TCCR0B = (1 << CS00);
+ TIMSK0 = (1 << OCIE0A);
}
/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
- LEDs_SetAllLEDs(LEDS_ALL_LEDS);
-
- if (!(CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface)))
- LEDs_SetAllLEDs(LEDS_LED1 | LEDS_LED3);
+ CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
}
/** Event handler for the library USB Unhandled Control Request event. */
|