/*
LUFA Library
- Copyright (C) Dean Camera, 2012.
+ Copyright (C) Dean Camera, 2021.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2021 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
/* Includes: */
#include <avr/io.h>
+ #include <util/atomic.h>
#include <util/delay.h>
#include <LUFA/Drivers/USB/USB.h>
#include "../V2Protocol.h"
#include "Config/AppConfig.h"
-
+
+ /* Macros: */
+ /** Calibration clock frequency for target OSCCAL calibration, see AVR053 application note. */
+ #define ISPPROTOCOL_CALIB_CLOCK_HZ 32768
+
+ /** Internal timer ticks per calibration clock cycle, see AVR053 application note. */
+ #define ISPPROTOCOL_CALIB_TICKS ( (F_CPU + ISPPROTOCOL_CALIB_CLOCK_HZ) / (2 * ISPPROTOCOL_CALIB_CLOCK_HZ) )
+
+ /** Per AVR053, calibration guaranteed to take 1024 cycles (2048 half-cycles) or fewer;
+ * add some cycles for response delay (5-10 after success) and response itself.
+ */
+ #define ISPPROTOCOL_CALIB_HALF_CYCLE_LIMIT (2*1024 + 50)
+
+ /** Per AVR053, target will toggle I/O pin 8 times to indicate a successful clock calibration.
+ */
+ #define ISPPROTOCOL_CALIB_SUCCESS_TOGGLE_NUM 8
+
/* Preprocessor Checks: */
#if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
#undef ENABLE_ISP_PROTOCOL
void ISPProtocol_ProgramMemory(const uint8_t V2Command);
void ISPProtocol_ReadMemory(const uint8_t V2Command);
void ISPProtocol_ChipErase(void);
+ void ISPProtocol_Calibrate(void);
void ISPProtocol_ReadFuseLockSigOSCCAL(const uint8_t V2Command);
void ISPProtocol_WriteFuseLock(const uint8_t V2Command);
void ISPProtocol_SPIMulti(void);