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Using ISP Dongle as SPI Master
I have a RS232 AVR ISP dongle that I use to program a mega 8. I know that when programming, the dongle is an SPI master and reset is pulled low. It should be possible to transfer...
Wednesday, 5 November 2003 - 22:19
Crystal Problems
I am using a mega-8 and a Microchip MCP2510. The crystal is connected to the MCP2510 and the mega-8 is driven by the clock out of the MCP2510. The oscillator is not reliably...
Thursday, 14 August 2003 - 23:12
Mega 8 Boot Loader Trouble
I am working on a bootloader application. It works on AVR Studio 4.06, but the real hardware has blanks (0xFF) for the first page (byte address 0x1000 to 0x103F). Any help would...
Tuesday, 22 July 2003 - 15:41
Mega 8 Timer 1 Top Value
I am using IAR and mega 8. Here is my code: #define PWMtop 160 OCR1A = 0; /* off */ OCR1B = PWMtop; /* off */ ICR1 = PWMtop; /* Top counter value */ TCCR1A = 0xB2...
Monday, 16 June 2003 - 19:38
Studio, ADC & IO Trouble
I am having trouble with an application and I suspect the problem is in the ADC interupt service routine. I am very anoyed that I spent a lot of time trying to debug it using AVR...
Wednesday, 11 June 2003 - 17:41
Mega128 fuses and command line
I am trying to set the fuses on the ATmega128 and Atmega64 using the command line interface serial ISP. The AVR STudio help file says to use -f value where value is 16 bit hex....
Friday, 30 May 2003 - 20:11
AVRISP "Upgrade"
This so-called upgrade process stinks! I updated AVR Studio, and now neither my AVRISP dongle nor my controller work! I get the window that says I need to upgrade the firmware,...
Friday, 7 February 2003 - 22:27
PC to SPI via ISP DOngle
I want to connect a PC to an AVR controller for testing. I know that people do this with RS232, but if you need to connect the PC to the AVR SPI port using the ISP dongle to...
Monday, 16 December 2002 - 15:35
Tiny15 ADC, V > Aref
I am using the ADC on the tiny 15 with Vcc= 5 volts. I am using the internal 2.56 volt reference. I set ADMUX =A2 to get a left adjust result. I only need 8 bits, so I only read...
Friday, 20 September 2002 - 19:21
ISP Firmware Upgrade Problem
I just installed AVR on my laptop computer. When I tried to program using the ISP serial dongle, it said that the firmware needed to be updated. I clicked "OK." It entered the...
Thursday, 11 July 2002 - 19:55
Embedded Serial Number
We have been using the Atmel AVR ISP version 2.65 software to program our mega 103 controllers. It has a cool feature that defines a flash memory location as a serial number and...
Friday, 26 April 2002 - 17:19
Program Tiny15 in HV Mode
Does anyone know of a tool that programs the ATtiny15 in the high voltage mode? Low voltage programming doesn't work after you use the reset pin as general I/O.
Tuesday, 5 March 2002 - 17:40

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