4

AVR069

8015B-AVR-02/06

Field

Size

Value

Description

Status

1 byte

STATUS_CMD_FAILED

A status value indicating that

the operation failed.

The only reason for the operation to fail is that an illegal parameter is requested.

3.1.4 CMD_OSCCAL

This command performs a calibration sequence as described in application note

AVR053.

Table 3-8. Command format

Field

Size

Value

Description

Command ID

1 byte

CMD_OSCCAL

Command id

Table 3-9. Answer format

Field

Size

Value

Description

Answer ID

1 byte

CMD_OSCCAL

Answer id

Status

1 byte

STATUS_CMD_OK or

STATUS_CMD_FAILED

A status value indicating the

result of the operation

3.1.5 CMD_LOAD_ADDRESS

This command will load an address into the AVRISP mkII. The next Program Flash,

Read Flash, Program EEPROM or Read EEPROM command will operate from the

address set with this command. The command is used in all programming modes. All

the abovementioned commands will increment an internal address counter, so this

command needs only to be sent once.

Table 3-10. Command format

Field

Size

Value

Description

Command ID

1 byte

CMD_LOAD_ADDRESS

Command id

Address

4 bytes

The address, four bytes, MSB

first

For word-addressed memories (program flash), the Address parameter is the word

address.

If bit 31 is set, this indicates that the following read/write operation will be performed

on a memory that is larger than 64KBytes. This is an indication to AVRISP mkII that a

load extended address must be executed. See datasheet for devices with memories

larger than 64KBytes.

Field

Size

Value

Description

Answer ID

1 byte

CMD_LOAD_ADDRESS

Answer id

Status

1 byte

STATUS_CMD_OK

This command will always

return STATUS_CMD_OK