HVProg

Compatible with AvrStudio
Supports all AVR controllers
Parallel and serial High-Voltage-Programming
Small and easy layout with only a few parts
STK500 protocol
Schematics and board layout available

This project is no longer developed and supported!

Introduction

The project started as an enhancement of Martin Thomas Evertool project. He has rebuilt the AVRISP and JTAG adapter with only a few parts. Unfortunately they both don’t support high-voltage programming modes - the only possibility to ‘rescue’ AVR controllers when you e.g. disabled the reset or SPI fuses. The only widely available possibility was the STK500 from ATMEL.

HVProg is a redesign of the original STK500 without all components only required on a development board. It is based on the original ATMEL schematics that are freely available on the net (e.g. at avrfreaks.net). The main target was to keep all nessecary functionality to program all available AVR controllers in every programming mode supported by the STK500.

If you are looking for a development board for ATMEL AVR controllers you better buy the original STK500. If you only need an ISP programming adapter, the AVRISP included in Evertool is the better choice for you!

Please keep in mind that HVProg…

can’t replace a real development board and will never do
has no ESD protoction
needs a stabilized 12V and 5V input voltage in the Basic-Version
needs a working programmer to be built (AvrProg compatible preferred, more in the software section)
has only been tested in 5V environments

There are two versions of the project available:

The Basic-Version has separate connectors for the different programming modes and is only available as schematic. It needs a stabilized 5V and 12V input voltage and is supposed to be used for own board development only. This version will not be updated except to correct errors.
The Advanced-Version is available as schematic and board layout. Adapter boards for HV-Programming can be easily built and a good tutorial how to build a case for HVProg is linked. This version needs an unstabilized input voltage of at least 15V (AC or DC).

Changelog

29.09.2005 : Programming problem solved. See Software-Section
24.04.2005 : Completely updated site with lots of new info
06.11.2004 : Version 0.3 with less parts
05.10.2004 : Schematics as eagle file released
03.10.2004 : First version released (V0.2)

Licence

HVProg is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

THIS WORK IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS WORK, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Programming interfaces

Basic-Version

6 Pin ISP
10 Pin ISP
Serial-High-Voltage Programming (no standard connector)
Parallel-High-Voltage Programming (STK500 compatible control und data connectors and one connector with other required signals)

Advanced-Version

6 pin ISP
20 pin connector for ISP, parallel and serial high-voltage programming

Hardware {#sec-hardware}

Basic-Version (v0.3)

Schematic (Eagle-Format, Freeware 4.11): [Download]({static}/hvprog/dl/hvprog_03.sch}
Schematic as gif-file: Download
Part list as text-file: Download

Advanced version (v0.5)

Schematic (Eagle-Format): Download
Schematic as gif-file: Download
Board (Eagle-Format): Download
Case: There is a very good guide from avr-projekte.de on how to build a case for HVProg. The site is in german but with lots of self explaining pictures.
Pictures of the assembled PCB are in the gallery

Connector details

ISP: The connector is compatible with the ATMEL standard (see STK500 User Guide page 51)
HV-Seriel: For exact pinning check the appropriate controller datasheet. Section Memory Programming/High Voltage Serial Programming

Pin name	uC pin
SWCLK	XTAL1
TRST	Reset (High Voltage Enable Jumper must be set)
PPD0	‘Serial Data Input’ (usually PB0)
PPD1	‘Serial Instr. Input’ (usually PB1)
PPD2	‘Serial Data Output’ (usually PB2)

HV-Parallel: For special connections check STK500 User Guide (Table 3-3 page 21, look for BSEL2 and PJUMP)

Pin name	uC pin
VCC	target supply voltage uC
GND	ground
TRST	Reset (High Voltage Enable Jumper must be set)
SWCLK	XTAL1
PPC0	If BSEL2 then connect to PortA.0 otherwise not needed
PPC1	PortD.1: Rdy/Bsy
PPC2	PortD.2: OE
PPC3	PortD.3: WR
PPC4	PortD.4: BS1
PPC5	PortD.5: XA0
PPC6	PortD.6: XA1
PPC7	PortD.7: PAGEL
PPD0	PortB.0
PPD1	PortB.1
PPD2	PortB.2
PPD3	PortB.3
PPD4	PortB.4
PPD5/MOSI	PortB.5
PPD6/MISO	PortB.6; if PJUMP connect it to PortC.0
PPD7/SCK	PortB.7; if PJUMP connect it to PortC.1

External clock to reanimate controllers with wrong clock settings (fuses) is available on SWCLK. The external clock has to be connected to XTAL1 and can be adjusted up to 3,69MHz with the STK500 plugin in AvrStudio.

Software {#sec-software}

The original ATMEL firmware is available in .ebn-format that is only supported by AvrProg (included in AvrStudio). When you have the original Avr910 programmer or an improved version (like the one from Klaus Leidinger) you can directly flash the firmware into the At90s8535 or Mega8535 (won’t work with original Avr910). The firmware file is in the AvrStudio directory: Stk500\stk500.ebn.

Software installation

Connect the ISP programming adapter with your computer and the ISP port on the HVProg board
Mount the ‘Selfprogramming’ jumper to pin 1,2
Connect the power supply (Basic: only 5V supply needed. Advanced: Regular supply)
Start AvrProg (AvrStudio: Tools/AvrProg)
Select the firmware in <AvrStudio directory>\Stk500\stk500.ebn
Set the appropriate fuses (ext. high frequency crystal, only for Mega8535)
Flash the firmware
Disconnect the power supply and then the programming adapter
Mount the ‘Selfprogramming’ jumper back to pin 2,3 (default)

Important

If you use Klaus Leidinger’s programmer please upgrade its firmware to version 3.8. Otherwise you might get problems when you use a Mega8535.

How to set the fuse bits

Gallery {#sec-gallery}

First prototype	PCB top	PCB bottom	Case
Case and PCB	Ready to use	HV-Parallel board	40pin programming adapter

FAQ

When writing the firmware with Klaus Leidinger’s programmer you get a write error (90s8535 only) The problem is known and is the result of a bug in the programmers firmware. An Update is available here and should be used to prevent errors.

HV-Programming is not working with Basic-Version The 12V power supply must be between 11.5V and 12.5V otherwise the programming mode cannot be entered.

HV- and/or ISP-Programming modes are not working The ‘Selfprogramming’ Jumper must be placed on pin 2,3. For HV-Mode the ‘High Voltage Enable’ jumper hast to be mounted, too.

Can i use HVProg with the new 2.x firmware? Yes, the original STK500 is completely emulated. All future firmware version should work without any problems.

Rebuilds

Here are rebuilds of the original HVProg which are slightly modfied and/or extended.

It is possible that some of the specifications given above do not apply for these version.

	From: Klaus Leidinger Download: This board is now the official version. The download link is in the hardware section. Website: www.mikrocontroller-projekte.de
	From: Crazy Horse Download: Schematic and Board