AVR069

13

8015B-AVR-02/06

3.4.1 PARAM_BUILD_NUMBER_LOW

The PARAM_BUILD_NUMBER_LOW and PARAM_BUILD_NUMBER_HIGH together

return a number that is incremented for each build of the firmware. This number is

mainly for ATMEL internal use.

3.4.2 PARAM_BUILD_NUMBER_HIGH

See PARAM_BUILD_NUMBER_LOW.

3.4.3 PARAM_HW_VER

Returns a hardware revision number.

3.4.4 PARAM_SW_MAJOR

The PARAM_SW_MAJOR and PARAM_SW_MINOR returns the firmware version.

3.4.5 PARAM_SW_MINOR

See PARAM_SW_MAJOR.

3.4.6 PARAM_VTARGET

The parameter value is voltage in volts x10, i.e. a parameter value of 42 (decimal)

corresponds to 4.2V.

3.4.7 PARAM_SCK_DURATION

When using the ISP programming interface, the ISP clock frequency must not exceed

what the target device supports. (The maximum ISP clock frequency depends on the

device system clock, internal clock division etc.)

The AVRISP mkII supports ISP frequencies from 51 Hz up to 8.0 MHz. The value for

PARAM_SCK_DURATION can be found using the algorithm shown in chapter 6.3.

3.4.8 PARAM_RESET_POLARITY

The AVRISP mkII can program both AT90 (AVR) family and AT89 (8051) family of

microcontrollers. They have different RESET pin polarity. The AVR has active low

reset, while the AT89 has active high.

This parameter sets the polarity of the reset signal. Set the parameter to 1 when

programming AVRs, and 0 when programming AT89 controllers.

NOTE: AVRISP mkII stores this parameter in EEPROM, so they are available the next time

power is applied to the programmers.

3.4.9 PARAM_STATUS_TGT_CONN

This parameter returns the status of the target connection. Each bit has a separate

status. See table below:

Table 3-37. Success

Bit value

Status

0x00

STATUS_ISP_READY

0x01

STATUS_CONN_FAIL_MOSI

0x02

STATUS_CONN_FAIL_RST