peter-neu-ulm wrote:
> Die neue Version 2.07 hab ich ein paar Wochen lang benutzt und war damit
> zufrieden, nur beim Programmieren der tiefen RC-Oszillatorfrequenz
> erzielte ich zwei OTP-Exemplare.
> Ob's an meiner Dummheit, am attiny13 (siehe Erratas)oder an Ponyprog
> lag, konnte ich aber nicht klären.
Wenn man sich die HTML-Datei im Installationsverzeichnis ansieht, so
findet man dies:
""Calibration tunes the serial bus speed for your computer. When you run
Calibration be sure that PonyProg is the only program running in the PC,
and the hard disk is idle (look at the HD led). If your PC is busy
because it's performing other tasks the Calibration thinks your PC is
slower than actual speed, and all I/Os are performed without proper
delay.
After the Calibration you can choose the speed for every serial bus
modifying the following parameters in the ponyprog.ini (.PonyProgrc
under Linux) file:
* I2CBusSpeed=NORMAL affect 24Cxx eeprom and other I²CBus devices
* SPIBusSpeed=NORMAL affect AVR micro, AT89Sxx micro and 25xxx
eeprom
* MicroWireBusSpeed=NORMAL affect 93Cxx eeprom
* PICBusSpeed=NORMAL affect PIC16x84 micro
* SDEBusSpeed=NORMAL affect SDE2506 eeprom
Every parameter can be assigned the value ULTRASLOW, VERYSLOW, SLOW,
NORMAL, FAST or TURBO.
Avoid to use the TURBO value because it means "no delay", and probably
it doesn't work on your PC, especially with the I/O driver.
Just for example my PC (Pentium MMX 200MHz) run I²CBus at about 80Khz
with NORMAL, and 110 Khz with FAST. Note that a lot of I²CBus devices
don't work at speed above the 100KHz.
A special note for AVR devices. The AVR need a valid system clock to be
programmed via SPI and the max frequency of the SPI bus depends on this
system clock. So if you changed the fuse (even accidentally) to use low
clocks like 1MHz or 32.768KHz you must change the SPIBusSpeed=VERYSLOW
or ULTRASLOW to access the AVR anymore. If you have to use such low
clocks I suggest to program the flash and eeprom first, and at last
program the security and fuse bits.""
Mit anderen Worten, nutzt man niedrigen Takt, z.B. einen
32kHz-Uhrenquarz, dann sollte man VERYSLOW oder ULTRASLOW eintragen.
Gruß
Jadeclaw.
