--- /dev/null
+/*\r
+ LUFA Library\r
+ Copyright (C) Dean Camera, 2009.\r
+ \r
+ dean [at] fourwalledcubicle [dot] com\r
+ www.fourwalledcubicle.com\r
+*/\r
+\r
+/*\r
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, and distribute this software\r
+ and its documentation for any purpose and without fee is hereby\r
+ granted, provided that the above copyright notice appear in all\r
+ copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting\r
+ documentation, and that the name of the author not be used in\r
+ advertising or publicity pertaining to distribution of the\r
+ software without specific, written prior permission.\r
+\r
+ The author disclaim all warranties with regard to this\r
+ software, including all implied warranties of merchantability\r
+ and fitness. In no event shall the author be liable for any\r
+ special, indirect or consequential damages or any damages\r
+ whatsoever resulting from loss of use, data or profits, whether\r
+ in an action of contract, negligence or other tortious action,\r
+ arising out of or in connection with the use or performance of\r
+ this software.\r
+*/\r
+\r
+/** \file\r
+ *\r
+ * Target-related functions for the V2 Protocol decoder.\r
+ */\r
+\r
+#include "V2ProtocolTarget.h"\r
+\r
+/** Current memory address for FLASH/EEPROM memory read/write commands */\r
+uint32_t CurrentAddress;\r
+\r
+/** Converts the given AVR Studio SCK duration parameter (set by a SET PARAM command from the host) to the nearest\r
+ * possible SPI clock prescaler mask for passing to the SPI_Init() routine.\r
+ *\r
+ * \return Nearest SPI prescaler mask for the given SCK frequency\r
+ */\r
+uint8_t V2Protocol_GetSPIPrescalerMask(void)\r
+{\r
+ static const uint8_t SPIMaskFromSCKDuration[TOTAL_PROGRAMMING_SPEEDS] =\r
+ {\r
+ #if (F_CPU == 8000000)\r
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 4MHz SPI\r
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI\r
+ SPI_SPEED_FCPU_DIV_4, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI\r
+ SPI_SPEED_FCPU_DIV_8, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI\r
+ SPI_SPEED_FCPU_DIV_16, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI\r
+ SPI_SPEED_FCPU_DIV_32, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI\r
+ SPI_SPEED_FCPU_DIV_64 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI \r
+ #if (F_CPU == 16000000)\r
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 8MHz SPI\r
+ SPI_SPEED_FCPU_DIV_4, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI\r
+ SPI_SPEED_FCPU_DIV_8, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI\r
+ SPI_SPEED_FCPU_DIV_16, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI\r
+ SPI_SPEED_FCPU_DIV_32, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI\r
+ SPI_SPEED_FCPU_DIV_64, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI \r
+ SPI_SPEED_FCPU_DIV_128 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI\r
+ #else\r
+ #error No SPI prescaler masks for chosen F_CPU speed.\r
+ #endif\r
+ };\r
+\r
+ uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);\r
+\r
+ if (SCKDuration >= sizeof(SPIMaskFromSCKDuration))\r
+ SCKDuration = (sizeof(SPIMaskFromSCKDuration) - 1);\r
+ \r
+ return SPIMaskFromSCKDuration[SCKDuration];\r
+}\r
+\r
+/** Asserts or deasserts the target's reset line, using the correct polarity as set by the host using a SET PARAM command.\r
+ * When not asserted, the line is tristated so as not to intefere with normal device operation.\r
+ *\r
+ * \param ResetTarget Boolean true when the target should be held in reset, false otherwise\r
+ */\r
+void V2Protocol_ChangeTargetResetLine(bool ResetTarget)\r
+{\r
+ if (ResetTarget)\r
+ {\r
+ RESET_LINE_DDR |= RESET_LINE_MASK;\r
+ \r
+ if (!(V2Params_GetParameterValue(PARAM_RESET_POLARITY)))\r
+ RESET_LINE_PORT |= RESET_LINE_MASK;\r
+ }\r
+ else\r
+ {\r
+ RESET_LINE_PORT &= ~RESET_LINE_MASK;\r
+ RESET_LINE_DDR &= ~RESET_LINE_MASK;\r
+ }\r
+}\r
+\r
+/** Waits until the last issued target memory programming command has completed, via the check mode given and using\r
+ * the given parameters.\r
+ *\r
+ * \param ProgrammingMode Programming mode used and completion check to use, a mask of PROG_MODE_* constants\r
+ * \param PollAddress Memory address to poll for completion if polling check mode used\r
+ * \param PollValue Poll value to check against if polling check mode used\r
+ * \param DelayMS Milliseconds to delay before returning if delay check mode used\r
+ * \param ReadMemCommand Device low-level READ MEMORY command to send if value check mode used\r
+ *\r
+ * \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT or\r
+ * \ref STATUS_CMD_TOUT otherwise\r
+ */\r
+uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAddress, uint8_t PollValue,\r
+ uint8_t DelayMS, uint8_t ReadMemCommand)\r
+{\r
+ uint8_t ProgrammingStatus = STATUS_CMD_OK;\r
+\r
+ /* Determine method of Programming Complete check */\r
+ switch (ProgrammingMode & ~(PROG_MODE_PAGED_WRITES_MASK | PROG_MODE_COMMIT_PAGE_MASK))\r
+ {\r
+ case PROG_MODE_WORD_TIMEDELAY_MASK:\r
+ case PROG_MODE_PAGED_TIMEDELAY_MASK:\r
+ V2Protocol_DelayMS(DelayMS);\r
+ break;\r
+ case PROG_MODE_WORD_VALUE_MASK:\r
+ case PROG_MODE_PAGED_VALUE_MASK:\r
+ TCNT0 = 0;\r
+\r
+ do\r
+ {\r
+ SPI_SendByte(ReadMemCommand);\r
+ SPI_SendByte(PollAddress >> 8);\r
+ SPI_SendByte(PollAddress & 0xFF); \r
+ }\r
+ while ((SPI_TransferByte(0x00) != PollValue) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));\r
+\r
+ if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)\r
+ ProgrammingStatus = STATUS_CMD_TOUT;\r
+ \r
+ break; \r
+ case PROG_MODE_WORD_READYBUSY_MASK:\r
+ case PROG_MODE_PAGED_READYBUSY_MASK:\r
+ ProgrammingStatus = V2Protocol_WaitWhileTargetBusy();\r
+ break;\r
+ }\r
+\r
+ return ProgrammingStatus;\r
+}\r
+\r
+/** Waits until the target has completed the last operation, by continuously polling the device's\r
+ * BUSY flag until it is cleared, or until the \ref TARGET_BUSY_TIMEOUT_MS timeout period has expired.\r
+ *\r
+ * \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT otherwise\r
+ */\r
+uint8_t V2Protocol_WaitWhileTargetBusy(void)\r
+{\r
+ TCNT0 = 0;\r
+ \r
+ do\r
+ {\r
+ SPI_SendByte(0xF0);\r
+ SPI_SendByte(0x00);\r
+\r
+ SPI_SendByte(0x00);\r
+ }\r
+ while ((SPI_ReceiveByte() & 0x01) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));\r
+\r
+ if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)\r
+ return STATUS_RDY_BSY_TOUT;\r
+ else\r
+ return STATUS_CMD_OK;\r
+}\r
+\r
+/** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the\r
+ * 64KB boundary. This sends the command with the correct address as indicated by the current address\r
+ * pointer variable set by the host when a SET ADDRESS command is issued.\r
+ */\r
+void V2Protocol_LoadExtendedAddress(void)\r
+{\r
+ SPI_SendByte(0x4D);\r
+ SPI_SendByte(0x00);\r
+ SPI_SendByte((CurrentAddress & 0x00FF0000) >> 16);\r
+ SPI_SendByte(0x00); \r
+}\r
projects / pub / lufa.git / blobdiff