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@ -186,22 +186,18 @@ void ISPProtocol_ProgramMemory(uint8_t V2Command)
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Write_Memory_Params.PollValue2;
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uint8_t* NextWriteByte = Write_Memory_Params.ProgData;
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/* Check to see if the host has issued a SET ADDRESS command and we haven't sent a
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* LOAD EXTENDED ADDRESS command (if needed, used when operating beyond the 128KB
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* FLASH barrier) */
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if (MustSetAddress)
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{
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if (CurrentAddress & (1UL << 31))
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ISPTarget_LoadExtendedAddress();
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MustSetAddress = false;
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}
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/* Check the programming mode desired by the host, either Paged or Word memory writes */
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if (Write_Memory_Params.ProgrammingMode & PROG_MODE_PAGED_WRITES_MASK)
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{
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uint16_t StartAddress = (CurrentAddress & 0xFFFF);
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/* Check to see if we need to send a LOAD EXTENDED ADDRESS command to the target */
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if (MustLoadExtendedAddress)
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{
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ISPTarget_LoadExtendedAddress();
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MustLoadExtendedAddress = false;
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}
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/* Paged mode memory programming */
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for (uint16_t CurrentByte = 0; CurrentByte < Write_Memory_Params.BytesToWrite; CurrentByte++)
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{
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@ -252,7 +248,7 @@ void ISPProtocol_ProgramMemory(uint8_t V2Command)
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/* Check to see if the FLASH address has crossed the extended address boundary */
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if ((V2Command == CMD_PROGRAM_FLASH_ISP) && !(CurrentAddress & 0xFFFF))
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ISPTarget_LoadExtendedAddress();
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MustLoadExtendedAddress = true;
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}
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}
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else
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@ -263,6 +259,13 @@ void ISPProtocol_ProgramMemory(uint8_t V2Command)
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bool IsOddByte = (CurrentByte & 0x01);
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uint8_t ByteToWrite = *(NextWriteByte++);
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/* Check to see if we need to send a LOAD EXTENDED ADDRESS command to the target */
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if (MustLoadExtendedAddress)
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{
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ISPTarget_LoadExtendedAddress();
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MustLoadExtendedAddress = false;
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}
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SPI_SendByte(Write_Memory_Params.ProgrammingCommands[0]);
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SPI_SendByte(CurrentAddress >> 8);
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SPI_SendByte(CurrentAddress & 0xFF);
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@ -291,14 +294,12 @@ void ISPProtocol_ProgramMemory(uint8_t V2Command)
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/* EEPROM just increments the address each byte, flash needs to increment on each word and
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* also check to ensure that a LOAD EXTENDED ADDRESS command is issued each time the extended
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* address boundary has been crossed */
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if (V2Command == CMD_PROGRAM_EEPROM_ISP)
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if ((CurrentByte & 0x01) || (V2Command == CMD_PROGRAM_EEPROM_ISP))
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{
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CurrentAddress++;
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}
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else if (IsOddByte)
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{
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if (!(++CurrentAddress & 0xFFFF))
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ISPTarget_LoadExtendedAddress();
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if ((V2Command != CMD_PROGRAM_EEPROM_ISP) && !(CurrentAddress & 0xFFFF))
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MustLoadExtendedAddress = true;
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}
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}
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}
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@ -331,20 +332,16 @@ void ISPProtocol_ReadMemory(uint8_t V2Command)
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Endpoint_Write_Byte(V2Command);
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Endpoint_Write_Byte(STATUS_CMD_OK);
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/* Check to see if the host has issued a SET ADDRESS command and we haven't sent a
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* LOAD EXTENDED ADDRESS command (if needed, used when operating beyond the 128KB
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* FLASH barrier) */
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if (MustSetAddress)
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{
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if (CurrentAddress & (1UL << 31))
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ISPTarget_LoadExtendedAddress();
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MustSetAddress = false;
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}
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/* Read each byte from the device and write them to the packet for the host */
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for (uint16_t CurrentByte = 0; CurrentByte < Read_Memory_Params.BytesToRead; CurrentByte++)
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{
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/* Check to see if we need to send a LOAD EXTENDED ADDRESS command to the target */
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if (MustLoadExtendedAddress)
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{
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ISPTarget_LoadExtendedAddress();
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MustLoadExtendedAddress = false;
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}
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/* Read the next byte from the desired memory space in the device */
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SPI_SendByte(Read_Memory_Params.ReadMemoryCommand);
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SPI_SendByte(CurrentAddress >> 8);
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@ -366,14 +363,12 @@ void ISPProtocol_ReadMemory(uint8_t V2Command)
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/* EEPROM just increments the address each byte, flash needs to increment on each word and
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* also check to ensure that a LOAD EXTENDED ADDRESS command is issued each time the extended
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* address boundary has been crossed */
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if (V2Command == CMD_READ_EEPROM_ISP)
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if ((CurrentByte & 0x01) || (V2Command == CMD_READ_EEPROM_ISP))
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{
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CurrentAddress++;
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}
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else if (CurrentByte & 0x01)
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{
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if (!(++CurrentAddress & 0xFFFF))
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ISPTarget_LoadExtendedAddress();
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if ((V2Command != CMD_READ_EEPROM_ISP) && !(CurrentAddress & 0xFFFF))
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MustLoadExtendedAddress = true;
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}
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}
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