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Diffstat (limited to 'firmware/VirtualSerial.c')
| -rw-r--r-- | firmware/VirtualSerial.c | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/firmware/VirtualSerial.c b/firmware/VirtualSerial.c new file mode 100644 index 0000000..2fccda6 --- /dev/null +++ b/firmware/VirtualSerial.c @@ -0,0 +1,298 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 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 disclaim 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 VirtualSerial demo. This file contains the main tasks of
+ * the demo and is responsible for the initial application hardware configuration.
+ */
+
+#include "VirtualSerial.h"
+#include <util/delay.h>
+#include <avr/interrupt.h>
+
+static int running = true;
+
+/** 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 = 0,
+
+ .DataINEndpointNumber = CDC_TX_EPNUM,
+ .DataINEndpointSize = CDC_TXRX_EPSIZE,
+ .DataINEndpointDoubleBank = false,
+
+ .DataOUTEndpointNumber = CDC_RX_EPNUM,
+ .DataOUTEndpointSize = CDC_TXRX_EPSIZE,
+ .DataOUTEndpointDoubleBank = false,
+
+ .NotificationEndpointNumber = CDC_NOTIFICATION_EPNUM,
+ .NotificationEndpointSize = CDC_NOTIFICATION_EPSIZE,
+ .NotificationEndpointDoubleBank = false,
+ },
+ };
+
+/** 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;
+
+static volatile uint8_t lock_timer_ticks;
+
+void lock_timer_setup(void)
+{
+ OCR1A = 128;
+
+ // CTC mode
+ TCCR1A = (1 << WGM12);
+
+ // Prescaler
+ TCCR1B = (1 << CS12);
+
+ // Enable interrupt
+ TIMSK1 = (1 << OCIE1A);
+}
+
+void lock_timer_reset(void)
+{
+ lock_timer_ticks = 0;
+}
+
+/** 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)
+{
+ DDRB = 1 << PB0 | 1 << PB4 | 0 << PB5;
+ PORTB = 0 << PB0;
+
+ SetupHardware();
+
+ lock_timer_setup();
+
+ /* Create a regular character stream for the interface so that it can be used with the stdio.h functions */
+ CDC_Device_CreateStream(&VirtualSerial_CDC_Interface, &USBSerialStream);
+
+// LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+ sei();
+
+ while(running)
+ {
+ wdt_reset();
+
+ _delay_ms(250);
+// PORTB ^= 1 << PB0; // Toggle external LED
+
+// CheckPinStatus();
+
+ CheckACMStatus();
+
+ CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
+ USB_USBTask();
+ }
+
+ USB_Detach();
+
+ /* Enable the watchdog and force a timeout to reset the AVR */
+ wdt_enable(WDTO_250MS);
+
+ for (;;);
+}
+
+void handle_command(const char *buf)
+{
+ if (strcmp("cola", buf) == 0)
+ {
+ PORTB ^= 1 << PB5;
+ fputs("mmm! LED toggeled\r\n", &USBSerialStream);
+ }
+
+ else if (strcmp("reboot", buf) == 0 || strcmp("reset", buf) == 0)
+ {
+ fputs("Rebooting!\r\n", &USBSerialStream);
+ running = false;
+ }
+
+ else if (strcmp("toggle", buf) == 0)
+ {
+ fputs("Toggling Magnet Lock\r\n", &USBSerialStream);
+ PORTB ^= 1 << PB4;
+ }
+
+ else if (strcmp("lock", buf) == 0)
+ {
+ fputs("status: locked\n", &USBSerialStream);
+ PORTB |= 1 << PB4;
+ }
+
+ else if (strcmp("unlock", buf) == 0)
+ {
+ fputs("status: unlocked\n", &USBSerialStream);
+ PORTB &= ~(1 << PB4);
+ lock_timer_reset();
+ }
+
+ else if (strcmp("doorstatus", buf) == 0)
+ {
+ if (PINB & (1 << PB5))
+ fputs("doorstatus: open\n", &USBSerialStream);
+ else
+ fputs("doorstatus: closed\n", &USBSerialStream);
+ }
+}
+
+void CheckACMStatus()
+{
+ static char buf[32];
+ static uint8_t len = 0;
+
+ int c;
+ while((c = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface)) > 0)
+ {
+ putc(c, &USBSerialStream);
+
+ if (c == '\r')
+ {
+ putc('\n', &USBSerialStream);
+ buf[len++] = '\0';
+ handle_command(buf);
+ len = 0;
+ continue;
+ }
+
+ buf[len++] = c;
+
+ if (len == sizeof(buf))
+ {
+ len = 0;
+ continue;
+ }
+ }
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+
+ /* Enable the watchdog timer. */
+ wdt_enable(WDTO_1S);
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+
+ /* Hardware Initialization */
+ USB_Init();
+}
+
+/** Checks for changes in the position of the board joystick, sending strings to the host upon each change. */
+void CheckPinStatus(void)
+{
+ char* ReportString = NULL;
+ static bool ActionSent = false;
+
+ if (!(PINB & (1 << PB6)))
+ {
+ ReportString = "Hello, World!\r\n";
+ ActionSent = false;
+ }
+
+ if (!(PINB & (1 << PB7)))
+ {
+ ReportString = "Rebooting!\r\n";
+ ActionSent = false;
+ running = false;
+ }
+
+ if ((ReportString != NULL) && (ActionSent == false))
+ {
+ ActionSent = true;
+
+ /* Write the string to the virtual COM port via the created character stream */
+ fputs(ReportString, &USBSerialStream);
+
+ _delay_ms(100);
+
+ /* Alternatively, without the stream: */
+ // CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString, strlen(ReportString));
+ }
+}
+
+/** Event handler for the library USB Connection event. */
+void EVENT_USB_Device_Connect(void)
+{
+// LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the library USB Disconnection event. */
+void EVENT_USB_Device_Disconnect(void)
+{
+// LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the library USB Configuration Changed event. */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+ bool ConfigSuccess = true;
+
+ ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
+
+// LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
+}
+
+/** Event handler for the library USB Control Request reception event. */
+void EVENT_USB_Device_ControlRequest(void)
+{
+ CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
+}
+
+ISR(TIMER1_COMPA_vect)
+{
+ if(PINB & (1 << PB5))
+ PORTB |= 1 << PB4;
+
+ if(lock_timer_ticks == 0xff)
+ return;
+
+ if(lock_timer_ticks < 30)
+ {
+ ++lock_timer_ticks;
+ return;
+ }
+
+ PORTB |= 1 << PB4;
+ lock_timer_ticks = 0xff;
+}
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