diff options
Diffstat (limited to 'Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c')
-rw-r--r-- | Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c | 712 |
1 files changed, 356 insertions, 356 deletions
diff --git a/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c b/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c index 1671d29ba..14ad97c74 100644 --- a/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c +++ b/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c @@ -1,356 +1,356 @@ -/*
- 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
- 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
- *
- * Target-related functions for the XMEGA target's NVM module.
- */
-
-#define INCLUDE_FROM_XMEGA_NVM_C
-#include "XMEGANVM.h"
-
-#if defined(ENABLE_XPROG_PROTOCOL) || defined(__DOXYGEN__)
-
-/** Sends the given 32-bit absolute address to the target.
- *
- * \param[in] AbsoluteAddress Absolute address to send to the target
- */
-static void XMEGANVM_SendAddress(const uint32_t AbsoluteAddress)
-{
- /* Send the given 32-bit address to the target, LSB first */
- XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[0]);
- XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[1]);
- XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[2]);
- XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[3]);
-}
-
-/** Sends the given NVM register address to the target.
- *
- * \param[in] Register NVM register whose absolute address is to be sent
- */
-static void XMEGANVM_SendNVMRegAddress(const uint8_t Register)
-{
- /* Determine the absolute register address from the NVM base memory address and the NVM register address */
- uint32_t Address = XPROG_Param_NVMBase | Register;
-
- /* Send the calculated 32-bit address to the target, LSB first */
- XMEGANVM_SendAddress(Address);
-}
-
-/** Busy-waits while the NVM controller is busy performing a NVM operation, such as a FLASH page read or CRC
- * calculation.
- *
- * \return Boolean true if the NVM controller became ready within the timeout period, false otherwise
- */
-bool XMEGANVM_WaitWhileNVMBusBusy(void)
-{
- /* Poll the STATUS register to check to see if NVM access has been enabled */
- while (TimeoutMSRemaining)
- {
- /* Send the LDCS command to read the PDI STATUS register to see the NVM bus is active */
- XPROGTarget_SendByte(PDI_CMD_LDCS | PDI_STATUS_REG);
-
- uint8_t StatusRegister = XPROGTarget_ReceiveByte();
-
- /* We might have timed out waiting for the status register read response, check here */
- if (!(TimeoutMSRemaining))
- return false;
-
- /* Check the status register read response to see if the NVM bus is enabled */
- if (StatusRegister & PDI_STATUS_NVM)
- {
- TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
- return true;
- }
- }
-
- return false;
-}
-
-/** Waits while the target's NVM controller is busy performing an operation, exiting if the
- * timeout period expires.
- *
- * \return Boolean true if the NVM controller became ready within the timeout period, false otherwise
- */
-bool XMEGANVM_WaitWhileNVMControllerBusy(void)
-{
- /* Poll the NVM STATUS register while the NVM controller is busy */
- while (TimeoutMSRemaining)
- {
- /* Send a LDS command to read the NVM STATUS register to check the BUSY flag */
- XPROGTarget_SendByte(PDI_CMD_LDS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_STATUS);
-
- uint8_t StatusRegister = XPROGTarget_ReceiveByte();
-
- /* We might have timed out waiting for the status register read response, check here */
- if (!(TimeoutMSRemaining))
- return false;
-
- /* Check to see if the BUSY flag is still set */
- if (!(StatusRegister & (1 << 7)))
- {
- TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
- return true;
- }
- }
-
- return false;
-}
-
-/** Retrieves the CRC value of the given memory space.
- *
- * \param[in] CRCCommand NVM CRC command to issue to the target
- * \param[out] CRCDest CRC Destination when read from the target
- *
- * \return Boolean true if the command sequence complete successfully
- */
-bool XMEGANVM_GetMemoryCRC(const uint8_t CRCCommand, uint32_t* const CRCDest)
-{
- /* Wait until the NVM controller is no longer busy */
- if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
- return false;
-
- /* Set the NVM command to the correct CRC read command */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
- XPROGTarget_SendByte(CRCCommand);
-
- /* Set CMDEX bit in NVM CTRLA register to start the CRC generation */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CTRLA);
- XPROGTarget_SendByte(1 << 0);
-
- /* Wait until the NVM bus is ready again */
- if (!(XMEGANVM_WaitWhileNVMBusBusy()))
- return false;
-
- /* Wait until the NVM controller is no longer busy */
- if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
- return false;
-
- /* Load the PDI pointer register with the DAT0 register start address */
- XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES);
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_DAT0);
-
- /* Send the REPEAT command to grab the CRC bytes */
- XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE);
- XPROGTarget_SendByte(XMEGA_CRC_LENGTH - 1);
-
- /* Read in the CRC bytes from the target */
- XPROGTarget_SendByte(PDI_CMD_LD | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE);
- for (uint8_t i = 0; i < XMEGA_CRC_LENGTH; i++)
- ((uint8_t*)CRCDest)[i] = XPROGTarget_ReceiveByte();
-
- return (TimeoutMSRemaining != 0);
-}
-
-/** Reads memory from the target's memory spaces.
- *
- * \param[in] ReadAddress Start address to read from within the target's address space
- * \param[out] ReadBuffer Buffer to store read data into
- * \param[in] ReadSize Number of bytes to read
- *
- * \return Boolean true if the command sequence complete successfully
- */
-bool XMEGANVM_ReadMemory(const uint32_t ReadAddress, uint8_t* ReadBuffer, uint16_t ReadSize)
-{
- /* Wait until the NVM controller is no longer busy */
- if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
- return false;
-
- /* Send the READNVM command to the NVM controller for reading of an arbitrary location */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
- XPROGTarget_SendByte(XMEGA_NVM_CMD_READNVM);
-
- /* Load the PDI pointer register with the start address we want to read from */
- XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES);
- XMEGANVM_SendAddress(ReadAddress);
-
- /* Send the REPEAT command with the specified number of bytes to read */
- XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE);
- XPROGTarget_SendByte(ReadSize - 1);
-
- /* Send a LD command with indirect access and postincrement to read out the bytes */
- XPROGTarget_SendByte(PDI_CMD_LD | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE);
- while (ReadSize-- && TimeoutMSRemaining)
- *(ReadBuffer++) = XPROGTarget_ReceiveByte();
-
- return (TimeoutMSRemaining != 0);
-}
-
-/** Writes byte addressed memory to the target's memory spaces.
- *
- * \param[in] WriteCommand Command to send to the device to write each memory byte
- * \param[in] WriteAddress Address to write to within the target's address space
- * \param[in] Byte Byte to write to the target
- *
- * \return Boolean true if the command sequence complete successfully
- */
-bool XMEGANVM_WriteByteMemory(const uint8_t WriteCommand, const uint32_t WriteAddress, const uint8_t Byte)
-{
- /* Wait until the NVM controller is no longer busy */
- if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
- return false;
-
- /* Send the memory write command to the target */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
- XPROGTarget_SendByte(WriteCommand);
-
- /* Send new memory byte to the memory to the target */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendAddress(WriteAddress);
- XPROGTarget_SendByte(Byte);
-
- return true;
-}
-
-/** Writes page addressed memory to the target's memory spaces.
- *
- * \param[in] WriteBuffCommand Command to send to the device to write a byte to the memory page buffer
- * \param[in] EraseBuffCommand Command to send to the device to erase the memory page buffer
- * \param[in] WritePageCommand Command to send to the device to write the page buffer to the destination memory
- * \param[in] PageMode Bitfield indicating what operations need to be executed on the specified page
- * \param[in] WriteAddress Start address to write the page data to within the target's address space
- * \param[in] WriteBuffer Buffer to source data from
- * \param[in] WriteSize Number of bytes to write
- *
- * \return Boolean true if the command sequence complete successfully
- */
-bool XMEGANVM_WritePageMemory(const uint8_t WriteBuffCommand, const uint8_t EraseBuffCommand,
- const uint8_t WritePageCommand, const uint8_t PageMode, const uint32_t WriteAddress,
- const uint8_t* WriteBuffer, uint16_t WriteSize)
-{
- if (PageMode & XPRG_PAGEMODE_ERASE)
- {
- /* Wait until the NVM controller is no longer busy */
- if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
- return false;
-
- /* Send the memory buffer erase command to the target */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
- XPROGTarget_SendByte(EraseBuffCommand);
-
- /* Set CMDEX bit in NVM CTRLA register to start the buffer erase */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CTRLA);
- XPROGTarget_SendByte(1 << 0);
- }
-
- if (WriteSize)
- {
- /* Wait until the NVM controller is no longer busy */
- if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
- return false;
-
- /* Send the memory buffer write command to the target */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
- XPROGTarget_SendByte(WriteBuffCommand);
-
- /* Load the PDI pointer register with the start address we want to write to */
- XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES);
- XMEGANVM_SendAddress(WriteAddress);
-
- /* Send the REPEAT command with the specified number of bytes to write */
- XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE);
- XPROGTarget_SendByte(WriteSize - 1);
-
- /* Send a ST command with indirect access and postincrement to write the bytes */
- XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE);
- while (WriteSize--)
- XPROGTarget_SendByte(*(WriteBuffer++));
- }
-
- if (PageMode & XPRG_PAGEMODE_WRITE)
- {
- /* Wait until the NVM controller is no longer busy */
- if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
- return false;
-
- /* Send the memory write command to the target */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
- XPROGTarget_SendByte(WritePageCommand);
-
- /* Send the address of the first page location to write the memory page */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendAddress(WriteAddress);
- XPROGTarget_SendByte(0x00);
- }
-
- return true;
-}
-
-/** Erases a specific memory space of the target.
- *
- * \param[in] EraseCommand NVM erase command to send to the device
- * \param[in] Address Address inside the memory space to erase
- *
- * \return Boolean true if the command sequence complete successfully
- */
-bool XMEGANVM_EraseMemory(const uint8_t EraseCommand, const uint32_t Address)
-{
- /* Wait until the NVM controller is no longer busy */
- if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
- return false;
-
- /* Send the memory erase command to the target */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
- XPROGTarget_SendByte(EraseCommand);
-
- /* Chip erase is handled separately, since it's procedure is different to other erase types */
- if (EraseCommand == XMEGA_NVM_CMD_CHIPERASE)
- {
- /* Set CMDEX bit in NVM CTRLA register to start the chip erase */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CTRLA);
- XPROGTarget_SendByte(1 << 0);
- }
- else
- {
- /* Other erase modes just need us to address a byte within the target memory space */
- XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
- XMEGANVM_SendAddress(Address);
- XPROGTarget_SendByte(0x00);
- }
-
- /* Wait until the NVM bus is ready again */
- if (!(XMEGANVM_WaitWhileNVMBusBusy()))
- return false;
-
- return true;
-}
-
-#endif
+/* + 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 + 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 + * + * Target-related functions for the XMEGA target's NVM module. + */ + +#define INCLUDE_FROM_XMEGA_NVM_C +#include "XMEGANVM.h" + +#if defined(ENABLE_XPROG_PROTOCOL) || defined(__DOXYGEN__) + +/** Sends the given 32-bit absolute address to the target. + * + * \param[in] AbsoluteAddress Absolute address to send to the target + */ +static void XMEGANVM_SendAddress(const uint32_t AbsoluteAddress) +{ + /* Send the given 32-bit address to the target, LSB first */ + XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[0]); + XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[1]); + XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[2]); + XPROGTarget_SendByte(((uint8_t*)&AbsoluteAddress)[3]); +} + +/** Sends the given NVM register address to the target. + * + * \param[in] Register NVM register whose absolute address is to be sent + */ +static void XMEGANVM_SendNVMRegAddress(const uint8_t Register) +{ + /* Determine the absolute register address from the NVM base memory address and the NVM register address */ + uint32_t Address = XPROG_Param_NVMBase | Register; + + /* Send the calculated 32-bit address to the target, LSB first */ + XMEGANVM_SendAddress(Address); +} + +/** Busy-waits while the NVM controller is busy performing a NVM operation, such as a FLASH page read or CRC + * calculation. + * + * \return Boolean true if the NVM controller became ready within the timeout period, false otherwise + */ +bool XMEGANVM_WaitWhileNVMBusBusy(void) +{ + /* Poll the STATUS register to check to see if NVM access has been enabled */ + while (TimeoutMSRemaining) + { + /* Send the LDCS command to read the PDI STATUS register to see the NVM bus is active */ + XPROGTarget_SendByte(PDI_CMD_LDCS | PDI_STATUS_REG); + + uint8_t StatusRegister = XPROGTarget_ReceiveByte(); + + /* We might have timed out waiting for the status register read response, check here */ + if (!(TimeoutMSRemaining)) + return false; + + /* Check the status register read response to see if the NVM bus is enabled */ + if (StatusRegister & PDI_STATUS_NVM) + { + TimeoutMSRemaining = COMMAND_TIMEOUT_MS; + return true; + } + } + + return false; +} + +/** Waits while the target's NVM controller is busy performing an operation, exiting if the + * timeout period expires. + * + * \return Boolean true if the NVM controller became ready within the timeout period, false otherwise + */ +bool XMEGANVM_WaitWhileNVMControllerBusy(void) +{ + /* Poll the NVM STATUS register while the NVM controller is busy */ + while (TimeoutMSRemaining) + { + /* Send a LDS command to read the NVM STATUS register to check the BUSY flag */ + XPROGTarget_SendByte(PDI_CMD_LDS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_STATUS); + + uint8_t StatusRegister = XPROGTarget_ReceiveByte(); + + /* We might have timed out waiting for the status register read response, check here */ + if (!(TimeoutMSRemaining)) + return false; + + /* Check to see if the BUSY flag is still set */ + if (!(StatusRegister & (1 << 7))) + { + TimeoutMSRemaining = COMMAND_TIMEOUT_MS; + return true; + } + } + + return false; +} + +/** Retrieves the CRC value of the given memory space. + * + * \param[in] CRCCommand NVM CRC command to issue to the target + * \param[out] CRCDest CRC Destination when read from the target + * + * \return Boolean true if the command sequence complete successfully + */ +bool XMEGANVM_GetMemoryCRC(const uint8_t CRCCommand, uint32_t* const CRCDest) +{ + /* Wait until the NVM controller is no longer busy */ + if (!(XMEGANVM_WaitWhileNVMControllerBusy())) + return false; + + /* Set the NVM command to the correct CRC read command */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD); + XPROGTarget_SendByte(CRCCommand); + + /* Set CMDEX bit in NVM CTRLA register to start the CRC generation */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CTRLA); + XPROGTarget_SendByte(1 << 0); + + /* Wait until the NVM bus is ready again */ + if (!(XMEGANVM_WaitWhileNVMBusBusy())) + return false; + + /* Wait until the NVM controller is no longer busy */ + if (!(XMEGANVM_WaitWhileNVMControllerBusy())) + return false; + + /* Load the PDI pointer register with the DAT0 register start address */ + XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_DAT0); + + /* Send the REPEAT command to grab the CRC bytes */ + XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE); + XPROGTarget_SendByte(XMEGA_CRC_LENGTH - 1); + + /* Read in the CRC bytes from the target */ + XPROGTarget_SendByte(PDI_CMD_LD | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE); + for (uint8_t i = 0; i < XMEGA_CRC_LENGTH; i++) + ((uint8_t*)CRCDest)[i] = XPROGTarget_ReceiveByte(); + + return (TimeoutMSRemaining != 0); +} + +/** Reads memory from the target's memory spaces. + * + * \param[in] ReadAddress Start address to read from within the target's address space + * \param[out] ReadBuffer Buffer to store read data into + * \param[in] ReadSize Number of bytes to read + * + * \return Boolean true if the command sequence complete successfully + */ +bool XMEGANVM_ReadMemory(const uint32_t ReadAddress, uint8_t* ReadBuffer, uint16_t ReadSize) +{ + /* Wait until the NVM controller is no longer busy */ + if (!(XMEGANVM_WaitWhileNVMControllerBusy())) + return false; + + /* Send the READNVM command to the NVM controller for reading of an arbitrary location */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD); + XPROGTarget_SendByte(XMEGA_NVM_CMD_READNVM); + + /* Load the PDI pointer register with the start address we want to read from */ + XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES); + XMEGANVM_SendAddress(ReadAddress); + + /* Send the REPEAT command with the specified number of bytes to read */ + XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE); + XPROGTarget_SendByte(ReadSize - 1); + + /* Send a LD command with indirect access and postincrement to read out the bytes */ + XPROGTarget_SendByte(PDI_CMD_LD | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE); + while (ReadSize-- && TimeoutMSRemaining) + *(ReadBuffer++) = XPROGTarget_ReceiveByte(); + + return (TimeoutMSRemaining != 0); +} + +/** Writes byte addressed memory to the target's memory spaces. + * + * \param[in] WriteCommand Command to send to the device to write each memory byte + * \param[in] WriteAddress Address to write to within the target's address space + * \param[in] Byte Byte to write to the target + * + * \return Boolean true if the command sequence complete successfully + */ +bool XMEGANVM_WriteByteMemory(const uint8_t WriteCommand, const uint32_t WriteAddress, const uint8_t Byte) +{ + /* Wait until the NVM controller is no longer busy */ + if (!(XMEGANVM_WaitWhileNVMControllerBusy())) + return false; + + /* Send the memory write command to the target */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD); + XPROGTarget_SendByte(WriteCommand); + + /* Send new memory byte to the memory to the target */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendAddress(WriteAddress); + XPROGTarget_SendByte(Byte); + + return true; +} + +/** Writes page addressed memory to the target's memory spaces. + * + * \param[in] WriteBuffCommand Command to send to the device to write a byte to the memory page buffer + * \param[in] EraseBuffCommand Command to send to the device to erase the memory page buffer + * \param[in] WritePageCommand Command to send to the device to write the page buffer to the destination memory + * \param[in] PageMode Bitfield indicating what operations need to be executed on the specified page + * \param[in] WriteAddress Start address to write the page data to within the target's address space + * \param[in] WriteBuffer Buffer to source data from + * \param[in] WriteSize Number of bytes to write + * + * \return Boolean true if the command sequence complete successfully + */ +bool XMEGANVM_WritePageMemory(const uint8_t WriteBuffCommand, const uint8_t EraseBuffCommand, + const uint8_t WritePageCommand, const uint8_t PageMode, const uint32_t WriteAddress, + const uint8_t* WriteBuffer, uint16_t WriteSize) +{ + if (PageMode & XPRG_PAGEMODE_ERASE) + { + /* Wait until the NVM controller is no longer busy */ + if (!(XMEGANVM_WaitWhileNVMControllerBusy())) + return false; + + /* Send the memory buffer erase command to the target */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD); + XPROGTarget_SendByte(EraseBuffCommand); + + /* Set CMDEX bit in NVM CTRLA register to start the buffer erase */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CTRLA); + XPROGTarget_SendByte(1 << 0); + } + + if (WriteSize) + { + /* Wait until the NVM controller is no longer busy */ + if (!(XMEGANVM_WaitWhileNVMControllerBusy())) + return false; + + /* Send the memory buffer write command to the target */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD); + XPROGTarget_SendByte(WriteBuffCommand); + + /* Load the PDI pointer register with the start address we want to write to */ + XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES); + XMEGANVM_SendAddress(WriteAddress); + + /* Send the REPEAT command with the specified number of bytes to write */ + XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE); + XPROGTarget_SendByte(WriteSize - 1); + + /* Send a ST command with indirect access and postincrement to write the bytes */ + XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE); + while (WriteSize--) + XPROGTarget_SendByte(*(WriteBuffer++)); + } + + if (PageMode & XPRG_PAGEMODE_WRITE) + { + /* Wait until the NVM controller is no longer busy */ + if (!(XMEGANVM_WaitWhileNVMControllerBusy())) + return false; + + /* Send the memory write command to the target */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD); + XPROGTarget_SendByte(WritePageCommand); + + /* Send the address of the first page location to write the memory page */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendAddress(WriteAddress); + XPROGTarget_SendByte(0x00); + } + + return true; +} + +/** Erases a specific memory space of the target. + * + * \param[in] EraseCommand NVM erase command to send to the device + * \param[in] Address Address inside the memory space to erase + * + * \return Boolean true if the command sequence complete successfully + */ +bool XMEGANVM_EraseMemory(const uint8_t EraseCommand, const uint32_t Address) +{ + /* Wait until the NVM controller is no longer busy */ + if (!(XMEGANVM_WaitWhileNVMControllerBusy())) + return false; + + /* Send the memory erase command to the target */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD); + XPROGTarget_SendByte(EraseCommand); + + /* Chip erase is handled separately, since it's procedure is different to other erase types */ + if (EraseCommand == XMEGA_NVM_CMD_CHIPERASE) + { + /* Set CMDEX bit in NVM CTRLA register to start the chip erase */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CTRLA); + XPROGTarget_SendByte(1 << 0); + } + else + { + /* Other erase modes just need us to address a byte within the target memory space */ + XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2)); + XMEGANVM_SendAddress(Address); + XPROGTarget_SendByte(0x00); + } + + /* Wait until the NVM bus is ready again */ + if (!(XMEGANVM_WaitWhileNVMBusBusy())) + return false; + + return true; +} + +#endif |