OLIMEX AVR-ISP500-TINY User manual

AVR-ISP500-TINY
User Manual
All boards produced by Olimex are ROHS compliant
Rev.C, May 2009
Copyr ght(c) 2008, OLIMEX Ltd, All r ghts reserved

INTRODUCTION:
AVR-ISP500-TINY is USB in-system programmer for AVR microcontrollers,
featuring two distincti e methods for communication with PC programming
software.
It can implement the STK500 2 protocol as defined by Atmel which makes
it compatible with a range of tools, including A rStudio and a rdude. It
is distinguished from other programmers by its support for autonomous
operation. AVR-ISP500-TINY contains a 2Mb FLASH memory where it can
store entire programming sessions, including FUSE, LOCK, EEPROM and
FLASH write and erification, as well as signature checking. Just hold the
button, perform all the necessary steps with A rStudio, and disconnect the
programmer from the PC. Next time button is pressed the programmer will
in oke all pre iously recorded steps without the need for connection to the
PC.
The other supported mode is a USB mass storage FLASH dri e where user
can drag and drop HEX files for downloading to target AVR chip.
We belie e these features make AVR-ISP500-TINY the perfect low-cost tool
for firmware upgrades in remote places.
FEATURES:
- Fully STK500 2 compatible;
- Works with A rStudio, WinAVR, A rdude and e ery other software
compatible with STK500 2;
- Two distincti e modes of operation;
- Modes of operation (STK500 2 and Mass Storage Dri e) are switched
easily by uploading firmware images a ailable from our website;
- USB port for connection to PC;
- Stand alone operation without the need for PC connection, allowing
firmware mass programming on many de ices with single button press;
- One bi-color LED for current operation status;
- Supports both standard ICSP10 and ICSP6 connectors;
- Button for initiating autonomous operations and command logging;
- Powered by USB;
- External clock output on ICSP10 pin 3 for rescuing AVRs with enabled
external clock fuse;
- Supports target oltages ranging from 1.8V to 5.5V.
- ISP clock frequencies ranging from 5kHz to 2MHz.
ELECTROSTATIC WARNING:
The AVR-ISP500-TINY board is shipped in protecti e anti-static packaging.
The board must not be subject to high electrostatic potentials. General
practice for working with static sensiti e de ices should be applied when
working with this board.
REQUIREMENTS:
Cables: 1.8 meter USB A-B cable. Ten- or six-wire ribbon cable for
connection to target AVR chip. USB power supply cable for autonomous
operation.

Software:
Software needed for STK500 2 mode:
- A rStudio, a ailable from Atmel.
- a rdude, included in the WinAVR distribution.
- Any other software with support for the STK500 2 protocol.
Software needed for Mass Storage mode:
- AVR binary chip description files, a ailable from our website.
- Plain text editor for editing the configuration file.
- Operating system with support for Mass Storage USB Class (any
recent one should do fine).

SUPPORTED MICROCONTROLLERS:
The following AVR microcontrollers are supported for programming:
-Classic 8-bit AVRs (see the notes for Mass Storage Mode).
- megaAVR
- tinyAVR
- USB AVR
The following AVR microcontrollers are not supported:
- XMEGA
- AVR32
The following programming methods are not supported:
- JTAG
- debugWire
- Parallel High Voltage Programming
- Serial High Voltage Programming
- PDI
CONNECTOR SCHEMATICS:
POWER SUPPLY:
Normally the programmer is supplied from USB. For autonomous operation
user must power the programmer by pro iding 5V DC stabilized power
supply to the USB connector, as shown on the figure below.
ICSP10
p n Abbrev. descr pt on
1 MOSI Serial Output
2 V_TAR Target VCC
3 CLKO Clock output
4 GN Ground
5 TRST Target RESET
6 GN Ground
7 SCK Serial Clock
8 GN Ground
9 MISO Serial Input
10 GN Ground
ICSP6
p n Abbrev. descr pt on
1 MISO Serial Input
2 V_TAR Target VCC
3 SCK Serial Clock
4 MOSI Serial Output
5 TRST Target RESET
6 GN Ground

POWER SUPPLY CABLE CONNECTIONPinConnect to...1+5V stabilized power
supply.2NC3NC4GND
PC DRIVER INSTALLATION:
Dri ers for the Mass Storage mode are integrated in Windows XP/Vista.
The dri er for STK500 2 mode is a ailable from our website. Windows
installation steps are the following:
1. Download and unzip the file “AVR-STK500-TINY-dri ers.zip” in a
temporary directory.
2. Plug the programmer in the USB port.
3. Point the De ice Wizard to the temporary directory.
4. Windows will complain that dri ers are not signed. Click “Continue”.
5. Click finish.
Screen shots of the steps are shown below:

WARNING: The COM port number assigned by Windows to AVR-ISP500-
TINY must be COM4 or below. Otherwise A rStudio might not be able to
detect the programmer. Here are the steps to change it:
1. Go to De ice Manager.
2. Unfold “Ports (COM&LPT)” and right-click on “Olimex Virtual COM -
AVR-ISP500-TINY (COMxx)” where COMxx can be anything between
COM1 and COM255. Select properties.

3. Go to the “Port Settings” tab and click the “Ad anced” button.

4. Change the “COM Port Number” to COM3 or COM4.
5. Click OK.
6. If a warning message pops up and complains about COM port being
used by another de ice, click “Yes”.
7. Click OK to close the de ice properties.
USING AVR-ISP500-TINY WITH AVRSTUDIO (STK500v2 mode):
WARNING: The COM port number assigned by Windows to AVR-ISP500-
TINY must be COM4 or below. Otherwise A rStudio might not be able to
detect the programmer. See the section for PC Dri ers Installation for more
information.
Usage under A rStudio is straightforward. First open the Programmer
Connect dialog:
Then select “STK500 or AVRISP option” with automatic port detection:

After pressing “Connect” the programming dialog should appear:
Target AVR now can be erased, flashed with a pro ided HEX file, FUSES
and LOCK bits can be written and/or erified. For more information please
consult the A rStudio documentation.
CAV AT: Although the programmer will happily accept setting VTARGET
and ARef in the “HW SETTINGS” tab, these actions will ha e no effect. The
programmer hardware can only read target VCC and show it
simultaneously in the VTARGET and ARef sliders.
USING AVR-ISP500-TINY WITH AVRDUDE:
AVRDUDE requires the serial port name, assigned by the Operating System
to AVR-ISP500-TINY. It must be gi en with the -P command line option.
For Windows systems please check the De ice Manager. For Linux systems
the following command will list all USB CDC serial ports:
ls /dev/ttyACM*
For MacOS X systems the following command will list all serial ports:
ls /dev/cu.*

An example command line for programming an Atmega88 under MacOS X:
avrdude -p m88 -B 0 -c stk 00v2 -P /dev/cu.usbmodem000010471 -e
-U flash:w:blinkled.hex
AUTONOMOUS OPERATION (STK500v2 mode):
When the button is held pressed for 5 seconds programmer enters
command logging state. In this state it will execute and log all commands
recei ed from the PC software in its internal FLASH memory. When the
button is pressed again, programmer will enter its normal state where
commands will be executed but not logged.
Logged commands can be executed again without the presence of a
connected PC by simply pressing quickly the programmer button while in
normal state. The bi-color LED will glow yellow while operation is in
progress. After operation finishes successfully the GREEN LED will blink
for a while, otherwise on error the RED LED will blink for a while. After that
the programmer will enter normal state where only the GREEN LED is on
constantly.
If programmer button is pressed and held for more than 1 second but less
then 5 seconds, it will show the current log status. A blinking GREEN
indicates a alid log, and blinking RED indicates in alid/erased log.
The formal definition of the programmer states is gi en below.
Button
released
5 seconds passed or
button pressed
Button pressed
Button held
for 1 second
IDLE
LED0=off
LED1=on
ENABLE_LOGGING
LED0=blink_slo
LED1=blink_slo
if(rs232_packet_received)
erase_log();
SHOW_RESULT
if(error)
LED0=on; LED1=off
else if(empty)
LED0=blink_fast; LED1=off
else
LED0=off; LED1=blink_fast
Button pressed
SHOW_LOG_STATUS
if(log_empty)
LED0=blink_fast
LED1=off
else
LED0=off
LED1=blink_fast
Button held
for 5 seconds
STANDALONE_ISP
LED0=on
LED1=on
Finished
NOTE: LED0 is RED, and LED1 is GREEN. If both are on, the result is Yellow glo .
AVR-ISP500 STATES