Merge commit '60b30c036397cb5627fa374bb930794b225daa29' as 'lib/lufa'

1 files changed, 178 insertions, 0 deletions

diff --git a/lib/lufa/Projects/LEDNotifier/LEDNotifier.c b/lib/lufa/Projects/LEDNotifier/LEDNotifier.c
new file mode 100644
index 0000000000..f399e1164f
--- /dev/null
+++ b/lib/lufa/Projects/LEDNotifier/LEDNotifier.c
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+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Main source file for the LEDNotfier project. This file contains the main tasks of
+ *  the project and is responsible for the initial application hardware configuration.
+ */
+
+#include "LEDNotifier.h"
+
+/** LUFA CDC Class driver interface configuration and state information. This structure is
+ *  passed to all CDC Class driver functions, so that multiple instances of the same class
+ *  within a device can be differentiated from one another.
+ */
+USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
+	{
+		.Config =
+			{
+				.ControlInterfaceNumber   = INTERFACE_ID_CDC_CCI,
+				.DataINEndpoint           =
+					{
+						.Address          = CDC_TX_EPADDR,
+						.Size             = CDC_TXRX_EPSIZE,
+						.Banks            = 1,
+					},
+				.DataOUTEndpoint =
+					{
+						.Address          = CDC_RX_EPADDR,
+						.Size             = CDC_TXRX_EPSIZE,
+						.Banks            = 1,
+					},
+				.NotificationEndpoint =
+					{
+						.Address          = CDC_NOTIFICATION_EPADDR,
+						.Size             = CDC_NOTIFICATION_EPSIZE,
+						.Banks            = 1,
+					},
+			},
+	};
+
+/** 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;
+
+/** 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.
+ */
+static FILE USBSerialStream;
+
+
+/** 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 == 0b00011111)
+	  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);
+}
+
+/** Main program entry point. This routine contains the overall program flow, including initial
+ *  setup of all components and the main program loop.
+ */
+int main(void)
+{
+	SetupHardware();
+
+	/* Create a regular blocking character stream for the interface so that it can be used with the stdio.h functions */
+	CDC_Device_CreateBlockingStream(&VirtualSerial_CDC_Interface, &USBSerialStream);
+
+	GlobalInterruptEnable();
+
+	for (;;)
+	{
+		/* Read in next LED colour command from the host */
+		uint8_t ColourUpdate = fgetc(&USBSerialStream);
+
+		/* Top 3 bits select the LED, bottom 5 control the brightness */
+		uint8_t Channel = (ColourUpdate & 0b11100000);
+		uint8_t Duty    = (ColourUpdate & 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;
+
+		fputc(&USBSerialStream, ColourUpdate);
+
+		CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
+		USB_USBTask();
+	}
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+#if (ARCH == ARCH_AVR8)
+	/* Disable watchdog if enabled by bootloader/fuses */
+	MCUSR &= ~(1 << WDRF);
+	wdt_disable();
+
+	/* Disable clock division */
+	clock_prescale_set(clock_div_1);
+#endif
+
+	/* 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)
+{
+	CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
+}
+
+/** Event handler for the library USB Control Request reception event. */
+void EVENT_USB_Device_ControlRequest(void)
+{
+	CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
+}
+