OLIMEX AVR-ISP500 Manual de usuario
AVR-ISP500
Users Manual
All boards produced by Olimex are ROHS compliant
Rev.C, May 2009
Copyrigh (c) 2008, OLIMEX L d, All righ s reserved
INTRODUCTION:
AVR-ISP500 is USB low cost in-system programmer for AVR
microcontrollers. t implements the STK500v2 protocol as defined by Atmel
which makes it compatible with a range of tools, including AvrStudio and
avrdude.
There are two ways you can use AVR- SP500
FEATURES:
- Fully STK500v2 compatible;
- Works with AvrStudio, WinAVR, Avrdude and every other software
compatible with STK500v2;
- USB port for connection to PC;
- One bi-color LED for current operation status;
- Supports both standard Atmel CSP10 and CSP6 layout connectors;
- Powered by USB;
- External clock output on CSP10 pin 3 for rescuing AVRs with enabled
external clock fuse;
- Supports target voltages ranging from 1.8V to 5.5V.
- SP clock frequencies ranging from 5kHz to 2MHz.
ELECTROSTATIC WARNING:
The AVR- SP500 must not be subject to high electrostatic potentials.
General practice for working with static sensitive devices should be applied
when working with this board.
REQUIREMENTS:
Cables: 1.8 meter USB A-B cable (not supplied with the programmer)
Software:
- AvrStudio, available from Atmel.
- avrdude, included in the WinAVR distribution.
- Any other software with support for the STK500v2 protocol.
SUPPORTED MICROCONTROLLERS:
The following AVR microcontrollers are supported for programming:
- Classic 8-bit AVRs
- 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
- PD
CONNECTORS:
POWER SUPPLY:
The programmer is supplied from USB.
ICSP10
pin Abbrev. descrip ion
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
pin Abbrev. descrip ion
1 MISO Serial Input
2 V_TAR Target VCC
3 SCK Serial Clock
4 MOSI Serial Output
5 TRST Target RESET
6 GN Ground
PC DRIVER INSTALLATION:
Drivers for the Mass Storage mode are integrated in Windows XP/Vista.
The driver for STK500v2 mode is available from our website. Windows
installation steps are the following:
1. Download and unzip the file “AVR-STK500-drivers.zip” in a
temporary directory.
2. Plug the programmer in the USB port.
3. Point the Device Wizard to the temporary directory.
4. Windows will complain that drivers 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- SP500
must be COM4 or below. Otherwise AvrStudio might not be able to detect
the programmer. Here are the steps to change it:
1. Go to Device Manager.
2. Unfold “Ports (COM&LPT)” and right-click on “Olimex Virtual COM -
AVR- SP500 (COMxx)” where COMxx can be anything between
COM1 and COM255. Select properties.
3. Go to the “Port Settings” tab and click the “Advanced” button.
4. Change the “COM Port Number” to COM3 or COM4.
5. Click OK.
6. f a warning message pops up and complains about COM port being
used by another device, click “Yes”.
7. Click OK to close the device properties.
USING AVR-ISP500 WITH AVRSTUDIO:
WARNING: The COM port number assigned by Windows to AVR- SP500
must be COM4 or below. Otherwise AvrStudio might not be able to detect
the programmer. See the section for PC Drivers nstallation for more
information.
Usage under AvrStudio is straightforward. First open the Programmer
Connect dialog:
Then select “STK500 or AVR SP option” with automatic port detection:
After pressing “Connect” the programming dialog should appear:
Target AVR now can be erased, flashed with a provided HEX file, FUSES
and LOCK bits can be written and/or verified. For more information please
consult the AvrStudio documentation.
CAVEAT: Although the programmer will happily accept setting VTARGET
and ARef in the “HW SETT NGS” tab, these actions will have no effect. The
programmer hardware can only read target VCC and show it
simultaneously in the VTARGET and ARef sliders.
USING AVR-ISP500 WITH AVRDUDE:
AVRDUDE requires the serial port name, assigned by the Operating System
to AVR- SP500. t must be given with the -P command line option.
For Windows systems please check the Device 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 50 -c stk500v2 -P /dev/cu.usbmodem000010 71 -e
-U flash:w:blinkled.hex
CLOCK OUTPUT:
Pin 3 of the CSP10 connector is normally left unconnected by other SP
programmers. Not ours. n normal programmer state this pin is tri-stated.
During programming operation, however, this pin is made output and a
square-wave clock is generated. Clock frequency is fixed to 62.5kHz.
After programming operation finishes, this pin is again tri-stated in order
not to interfere with the target circuit.
This clock output can be really helpful when target AVR is accidentally
programmed with External Clock FUSE option. To resurrect it just wire
CSP10 pin 3 to XTAL1 pin of the target AVR chip and initiate a
programming session to fix the FUSE values.
FIRMWARE UPGRADE:
AVR- SP500 contains a built-in boot loader for easy firmware upgrade.
Device enters boot loader mode if the application FLASH section is
corrupted. To force the device to enter boot loader mode for manual
firmware update do the following:
1. Disconnect the programmer from any power source (external
AC/DC, USB).
2. Disconnect the programmer from any target boards.
3. Put a jumper between pin 1 and pin 3 of the CSP10 connector.
4. Power up the device by connecting it to USB.
5. Device now must be in boot loader mode, indicated by the LED light
sequence:
a. RED off, GREEN on.
b. RED on, GREEN off.
c. RED off, GREEN off.
Jumper can now be removed. The device will stay in boot loader mode until
it is power cycled.
Boot loader implements the standard protocol XMODEM with CRC16 for
firmware update. User is free to use his favorite terminal client
(HyperTerminal, minicom, etc) to upload the firmware images taken from
our website. The AVR- SP500 boot loader implements a USB virtual serial
port that is baud rate agnostic.
As an alternative we provide a simple Windows GU application for users
who don’t want to or cannot use terminal software.
After the firmware image is uploaded the target will blink the GREEN LED if
update was successful, otherwise it will blink the RED LED if firmware
image was invalid or update was unsuccessful. Device stays in this state
until it is power cycled.
TROUBLESHOOTING GUIDE:
Proble : AVR Studio cannot find my programmer.
Probable causes and solutions:
Look whether the programmer is listed in Device Manager under the
“Ports (COM & LPT)” section. f it's not there then check your USB
cables and hubs. Reinstall the driver.
Check that the green LED is constantly on. f not then the
programmer might be in firmware upgrade mode. Go to the firmware
upgrade section for more details.
Your serial port number might be too high. Check the manual
section “ nstalling drivers” for more information on assigning serial
port numbers. Also go to AVR Studio menu “Tools->Options” and set
the “Number of COM ports to try” field to at least 20.
Remove all applications that might be using or scanning your
computer's serial ports, including any serial port monitors. They
might mess up the STK500v2 communication between AVR Studio
and the programmer.
Proble : Programming fails. Target AVR chip cannot enter programming
mode.
Probable causes and solutions:
SP frequency might be too high. Set the SP frequency to well below
¼ of target MCU clock. Please note that the AVR MCU clock depends
on its fuses configuration.
Target power might not be stable enough or supply voltage might be
too low. Check your target board circuit. Ensure that the used AVR
chip specifications match your supply voltage.
Target power supply VCC might not be connected to pin 2 of
CSP6/10. Check your target board circuit.
The target AVR MCU might have fuses programmed for disabling SP
SP or selecting another programming method. n such case you'll
need a High Voltage Parallel programmer to unlock the chip.
The reset line cannot be pulled low by the programmer. Check your
schematic and ensure that only a weak pull-up (and possibly a
small capacitor) are connected to RESET. Otherwise, if the pull-up
is too small or there is another output driving RESET, the
programmer won't be able to pull it down.
Another circuit is driving the SP lines (M SO, MOS , SCK or RESET)
resulting in a contention with the programmer. The solution is to
remove all such circuits (LEDs, RS232 drivers, resistors below 2k,
etc) from the four SP lines during programming. AVR- SP500 is
more susceptible to this kind of fault than other programmers on
the market because it has 560 ohm resistors in series with all its
outputs. This protects both the target MCU and the target board
circuit.
ELECTRICAL CHARACTERISTICS:
Sy b
ol
Description Condition Min Typ Max Uni
ts
VTARG Target Supply Voltage. 1.8 5.5 V
FSP SP Frequency on SCK
SP pin.
5 2000 kHz
VCC Programmer Power
Supply Voltage.
4.6 5.4 V
CC Programmer Power
Supply Current.
dle 25 mA
Programming with AvrStudio,
VTARG=1.8V, F SP=2MHz
30 mA
Time for a full
programming and
verification of
ATmega128 (128k
FLASH + 4k EEPROM +
FUSES + LOCK +
Signature check)
Programming with AvrStudio,
VTARG=5V, F SP=2MHz
60 s
Time for a FLASH
programming and
verification of
ATmega128 (128k
FLASH)
Programming with AvrStudio,
VTARG=5V, F SP=2MHz
25 s
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