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date: |
notice: |
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08.04
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MMI (display-routines and handling) and other timing
relevant routines optimized. Some bugs fixed. |
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07.04
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STAMP integrated into the car-console. DC/DC-converter
for 12V supply finished and cable between car-radio "Blaupunkt
Punto Mid High" and STAMP installed (power and data-communication). |
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04.04
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The USB-protocol is fully implemented, but the class
specific protocol needs to be finished (routines for the mass-storage-device:
"bulk only") |
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03.04
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New display with 4x27 characters. |
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02.04
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Schematics published on the web-pages. |
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23.12.03
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Some interested guys asked me to send them schematics
and pcb. I redesigned the schematic and published it to them. A fully
version will be here available soon. |
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08.03
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Started to get run the Philips PDIUSBD12-IC, PC acknowledges
the plugged in USB-Device, but the damned bulk-transfers give me a lot
of work.. |
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06.03
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Homepage updated (new pictures and some corrections),
Set up a Direct-Link-Page for all old bookmarks. Since March I got
at least 240 visits a week to my old mp3-pages |
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05.03
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Box finished and a long field-test in the car has finished
positiv! |
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04.03
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Set up this new Homepage (Version 2) |
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04.03
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started to set up a box. |
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03.03
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Display-routines implemented to react for MMI-changes (album-title-and
song-title are shown, volume-changes are shown, etc.).
MMI implemented for keypad-usage
First test in the car: Moving around on the Berlin Autobahn shows
that the player is very robust and shockresistant. Only on a very
old and stony road the player stops playing for a second or so,
but goes then on with the actually song.
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02.03
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Changed the ATA-sectorread-routines completly. Now the overhead
is reduced to 1/256 !
First mechanism for a MMI is implemented. Now the directory structure
could be used.
Read out directory structure and show it over the PC-terminal application.
Changed PEC-datatransfer-routines instead of polling between harddisk
and cpu and decoder and cpu.
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01.03
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Started the first version of this homepage |
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25.12.02
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Failure found in the pointerarithmetic. Changed the
code, now the compiler can address more than 64k for pointer-access.
A long MP3-song runs now. |
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12.02
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Code for the codec written - VS1001 sends first sinus
tone. |
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11.02
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ATA-routines implemented - first data read from harddisk |
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10.02
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looked for a really hard SW-bug. But then found out
that the blocking C's are not delivered with the correct values! Changed
them and the SW runs correct now. (Always when the SW was working
a lot on the external SRAM, the voltage runs down and the reset-IC
started through with an reset puls!) |
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09.02
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Code implemented to send first characters on the LC-display |
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07.02
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Hello world! was working - first steps done with the
compiler and the bootstrap-mechanism of the CPU |
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05.02
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I got the PCB and solded down the cpu and max232 |
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03.02
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I send the gerber-files to the PCB-factory |
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01.02
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Schematic is ready, started with the PCB-design |
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11/12.01
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I decided to set up this project and then I started
looking for datasheets, other experiences in the net, etc. |
