From 74298f8ca11dc8d3b0359d1d4e124d6494c3eeac Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Fri, 10 Apr 2009 01:15:42 +0200 Subject: * digital/avr/modules/usb: - imported LUFA. --- .../usb/lufa/Bootloaders/TeensyHID/TeensyHID.c | 156 +++++++++++++++++++++ 1 file changed, 156 insertions(+) create mode 100644 digital/avr/modules/usb/lufa/Bootloaders/TeensyHID/TeensyHID.c (limited to 'digital/avr/modules/usb/lufa/Bootloaders/TeensyHID/TeensyHID.c') diff --git a/digital/avr/modules/usb/lufa/Bootloaders/TeensyHID/TeensyHID.c b/digital/avr/modules/usb/lufa/Bootloaders/TeensyHID/TeensyHID.c new file mode 100644 index 00000000..4f09ac50 --- /dev/null +++ b/digital/avr/modules/usb/lufa/Bootloaders/TeensyHID/TeensyHID.c @@ -0,0 +1,156 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2009. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, and distribute this software + and its documentation for any purpose and without fee is hereby + granted, 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 TeensyHID bootloader. This file contains the complete bootloader logic. + */ + +#define INCLUDE_FROM_TEENSYHID_C +#include "TeensyHID.h" + +/* Global Variables: */ +/** Flag to indicate if the bootloader should be running, or should exit and allow the application code to run + * via a soft reset. When cleared, the bootloader will abort, the USB interface will shut down and the application + * started via a forced watchdog reset. + */ +bool RunBootloader = true; + + +/** Main program entry point. This routine configures the hardware required by the bootloader, then continuously + * runs the bootloader processing routine until instructed to soft-exit. + */ +int main(void) +{ + /* Disable watchdog if enabled by bootloader/fuses */ + MCUSR &= ~(1 << WDRF); + wdt_disable(); + + /* Disable Clock Division */ + SetSystemClockPrescaler(0); + + /* Relocate the interrupt vector table to the bootloader section */ + MCUCR = (1 << IVCE); + MCUCR = (1 << IVSEL); + + /* Initialize USB subsystem */ + USB_Init(); + + while (RunBootloader) + USB_USBTask(); + + /* Shut down the USB interface, so that the host will register the disconnection */ + USB_ShutDown(); + + /* Wait 100ms to give the host time to register the disconnection */ + _delay_ms(100); + + /* Enable the watchdog and force a timeout to reset the AVR */ + wdt_enable(WDTO_250MS); + + for (;;); +} + +/** Event handler for the USB_ConfigurationChanged event. This configures the device's endpoints ready + * to relay data to and from the attached USB host. + */ +EVENT_HANDLER(USB_ConfigurationChanged) +{ + /* Setup HID Report Endpoint */ + Endpoint_ConfigureEndpoint(HID_EPNUM, EP_TYPE_INTERRUPT, + ENDPOINT_DIR_IN, HID_EPSIZE, + ENDPOINT_BANK_SINGLE); +} + +/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific + * control requests that are not handled internally by the USB library (including the HID commands, which are + * all issued via the control endpoint), so that they can be handled appropriately for the application. + */ +EVENT_HANDLER(USB_UnhandledControlPacket) +{ + /* Handle HID Class specific requests */ + switch (bRequest) + { + case REQ_SetReport: + if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) + { + Endpoint_ClearSetupReceived(); + + /* Wait until the command (report) has been sent by the host */ + while (!(Endpoint_IsSetupOUTReceived())); + + /* Read in the write destination address */ + uint16_t PageAddress = Endpoint_Read_Word_LE(); + + /* Check if the command is a program page command, or a start application command */ + if (PageAddress == TEENSY_STARTAPPLICATION) + { + RunBootloader = false; + } + else + { + /* Erase the given FLASH page, ready to be programmed */ + boot_page_erase(PageAddress); + boot_spm_busy_wait(); + + /* Write each of the FLASH page's bytes in sequence */ + for (uint8_t PageByte = 0; PageByte < 128; PageByte += 2) + { + /* Check if endpoint is empty - if so clear it and wait until ready for next packet */ + if (!(Endpoint_BytesInEndpoint())) + { + Endpoint_ClearSetupOUT(); + while (!(Endpoint_IsSetupOUTReceived())); + } + + /* Write the next data word to the FLASH page */ + boot_page_fill(PageAddress + PageByte, Endpoint_Read_Word_LE()); + } + + /* Write the filled FLASH page to memory */ + boot_page_write(PageAddress); + boot_spm_busy_wait(); + + /* Re-enable RWW section */ + boot_rww_enable(); + } + + Endpoint_ClearSetupOUT(); + + /* Wait until the host is ready to receive the request confirmation */ + while (!(Endpoint_IsSetupINReady())); + + /* Handshake the request by sending an empty IN packet */ + Endpoint_ClearSetupIN(); + } + + break; + } +} -- cgit v1.2.3