/*
LUFA Library
Copyright (C) Dean Camera, 2010.
-
+
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
- Permission to use, copy, modify, distribute, and sell this
+ 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
+ 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
+ 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
*
* Main source file for the CDC class bootloader. This file contains the complete bootloader logic.
*/
-
+
#define INCLUDE_FROM_BOOTLOADERCDC_C
#include "BootloaderCDC.h"
bool RunBootloader = true;
-/** Main program entry point. This routine configures the hardware required by the bootloader, then continuously
+/** 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, or hard-reset via the watchdog to start
* the loaded application code.
*/
CDC_Task();
USB_USBTask();
}
-
+
/* Disconnect from the host - USB interface will be reset later along with the AVR */
USB_Detach();
/* Disable clock division */
clock_prescale_set(clock_div_1);
-
+
/* Relocate the interrupt vector table to the bootloader section */
MCUCR = (1 << IVCE);
MCUCR = (1 << IVSEL);
-
+
/* Initialize USB Subsystem */
USB_Init();
}
{
case REQ_GetLineEncoding:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
- {
+ {
Endpoint_ClearSETUP();
/* Write the line coding data to the control endpoint */
Endpoint_Write_Control_Stream_LE(&LineEncoding, sizeof(CDC_Line_Coding_t));
Endpoint_ClearOUT();
}
-
+
break;
case REQ_SetLineEncoding:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
Endpoint_Read_Control_Stream_LE(&LineEncoding, sizeof(CDC_Line_Coding_t));
Endpoint_ClearIN();
}
-
+
break;
}
}
{
uint16_t BlockSize;
char MemoryType;
-
+
bool HighByte = false;
uint8_t LowByte = 0;
-
+
BlockSize = (FetchNextCommandByte() << 8);
BlockSize |= FetchNextCommandByte();
-
+
MemoryType = FetchNextCommandByte();
if ((MemoryType != 'E') && (MemoryType != 'F'))
{
/* Send error byte back to the host */
WriteNextResponseByte('?');
-
+
return;
}
#if (FLASHEND > 0xFFFF)
WriteNextResponseByte(pgm_read_byte_far(CurrAddress | HighByte));
#else
- WriteNextResponseByte(pgm_read_byte(CurrAddress | HighByte));
+ WriteNextResponseByte(pgm_read_byte(CurrAddress | HighByte));
#endif
-
+
/* If both bytes in current word have been read, increment the address counter */
if (HighByte)
CurrAddress += 2;
-
+
HighByte = !HighByte;
}
else
/* Increment the address counter after use */
CurrAddress += 2;
- }
+ }
}
}
else
boot_page_erase(PageStartAddress);
boot_spm_busy_wait();
}
-
+
while (BlockSize--)
{
if (MemoryType == 'F')
- {
+ {
/* If both bytes in current word have been written, increment the address counter */
if (HighByte)
{
else
{
LowByte = FetchNextCommandByte();
-
+
HighByte = true;
}
}
else
{
/* Write the next EEPROM byte from the endpoint */
- eeprom_write_byte((uint8_t*)((intptr_t)(CurrAddress >> 1)), FetchNextCommandByte());
+ eeprom_write_byte((uint8_t*)((intptr_t)(CurrAddress >> 1)), FetchNextCommandByte());
/* Increment the address counter after use */
CurrAddress += 2;
{
/* Commit the flash page to memory */
boot_page_write(PageStartAddress);
-
+
/* Wait until write operation has completed */
boot_spm_busy_wait();
}
-
+
/* Send response byte back to the host */
- WriteNextResponseByte('\r');
+ WriteNextResponseByte('\r');
}
}
{
/* Select the OUT endpoint so that the next data byte can be read */
Endpoint_SelectEndpoint(CDC_RX_EPNUM);
-
+
/* If OUT endpoint empty, clear it and wait for the next packet from the host */
while (!(Endpoint_IsReadWriteAllowed()))
{
return 0;
}
}
-
+
/* Fetch the next byte from the OUT endpoint */
return Endpoint_Read_Byte();
}
{
/* Select the IN endpoint so that the next data byte can be written */
Endpoint_SelectEndpoint(CDC_TX_EPNUM);
-
+
/* If IN endpoint full, clear it and wait until ready for the next packet to the host */
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearIN();
-
+
while (!(Endpoint_IsINReady()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
}
-
+
/* Write the next byte to the OUT endpoint */
Endpoint_Write_Byte(Response);
}
{
/* Select the OUT endpoint */
Endpoint_SelectEndpoint(CDC_RX_EPNUM);
-
+
/* Check if endpoint has a command in it sent from the host */
if (Endpoint_IsOUTReceived())
{
FetchNextCommandByte();
/* Send confirmation byte back to the host */
- WriteNextResponseByte('\r');
+ WriteNextResponseByte('\r');
}
else if (Command == 't')
{
else if (Command == 'p')
{
/* Indicate serial programmer back to the host */
- WriteNextResponseByte('S');
+ WriteNextResponseByte('S');
}
else if (Command == 'S')
{
/* Write the 7-byte software identifier to the endpoint */
for (uint8_t CurrByte = 0; CurrByte < 7; CurrByte++)
- WriteNextResponseByte(SOFTWARE_IDENTIFIER[CurrByte]);
+ WriteNextResponseByte(SOFTWARE_IDENTIFIER[CurrByte]);
}
else if (Command == 'V')
{
}
else if (Command == 's')
{
- WriteNextResponseByte(AVR_SIGNATURE_3);
+ WriteNextResponseByte(AVR_SIGNATURE_3);
WriteNextResponseByte(AVR_SIGNATURE_2);
WriteNextResponseByte(AVR_SIGNATURE_1);
}
else if (Command == 'b')
{
WriteNextResponseByte('Y');
-
+
/* Send block size to the host */
WriteNextResponseByte(SPM_PAGESIZE >> 8);
- WriteNextResponseByte(SPM_PAGESIZE & 0xFF);
+ WriteNextResponseByte(SPM_PAGESIZE & 0xFF);
}
else if (Command == 'e')
{
CurrFlashAddress += SPM_PAGESIZE;
}
-
+
/* Send confirmation byte back to the host */
- WriteNextResponseByte('\r');
+ WriteNextResponseByte('\r');
}
else if (Command == 'l')
{
}
else if (Command == 'r')
{
- WriteNextResponseByte(boot_lock_fuse_bits_get(GET_LOCK_BITS));
+ WriteNextResponseByte(boot_lock_fuse_bits_get(GET_LOCK_BITS));
}
else if (Command == 'F')
{
}
else if (Command == 'N')
{
- WriteNextResponseByte(boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS));
+ WriteNextResponseByte(boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS));
}
else if (Command == 'Q')
{
- WriteNextResponseByte(boot_lock_fuse_bits_get(GET_EXTENDED_FUSE_BITS));
+ WriteNextResponseByte(boot_lock_fuse_bits_get(GET_EXTENDED_FUSE_BITS));
}
else if (Command == 'C')
- {
+ {
/* Write the high byte to the current flash page */
boot_page_fill(CurrAddress, FetchNextCommandByte());
/* Send confirmation byte back to the host */
- WriteNextResponseByte('\r');
+ WriteNextResponseByte('\r');
}
else if (Command == 'c')
- {
+ {
/* Write the low byte to the current flash page */
boot_page_fill(CurrAddress | 1, FetchNextCommandByte());
-
+
/* Increment the address */
CurrAddress += 2;
/* Send confirmation byte back to the host */
- WriteNextResponseByte('\r');
+ WriteNextResponseByte('\r');
}
else if (Command == 'm')
{
/* Commit the flash page to memory */
boot_page_write(CurrAddress);
-
+
/* Wait until write operation has completed */
boot_spm_busy_wait();
/* Send confirmation byte back to the host */
- WriteNextResponseByte('\r');
+ WriteNextResponseByte('\r');
}
else if ((Command == 'B') || (Command == 'g'))
{
#if (FLASHEND > 0xFFFF)
uint16_t ProgramWord = pgm_read_word_far(CurrAddress);
#else
- uint16_t ProgramWord = pgm_read_word(CurrAddress);
+ uint16_t ProgramWord = pgm_read_word(CurrAddress);
#endif
-
+
WriteNextResponseByte(ProgramWord >> 8);
WriteNextResponseByte(ProgramWord & 0xFF);
}
{
/* Read the byte from the endpoint and write it to the EEPROM */
eeprom_write_byte((uint8_t*)((intptr_t)(CurrAddress >> 1)), FetchNextCommandByte());
-
- /* Increment the address after use */
+
+ /* Increment the address after use */
CurrAddress += 2;
-
+
/* Send confirmation byte back to the host */
- WriteNextResponseByte('\r');
+ WriteNextResponseByte('\r');
}
else if (Command == 'd')
{
/* Send the endpoint data to the host */
Endpoint_ClearIN();
-
+
/* If a full endpoint's worth of data was sent, we need to send an empty packet afterwards to signal end of transfer */
if (IsEndpointFull)
{
while (!(Endpoint_IsINReady()))
- {
+ {
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
/* Wait until the data has been sent to the host */
while (!(Endpoint_IsINReady()))
- {
+ {
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
-
+
/* Select the OUT endpoint */
Endpoint_SelectEndpoint(CDC_RX_EPNUM);
Endpoint_ClearOUT();
}
}
+
projects / pub / USBasp.git / blobdiff