自制MP3播放器

文章摘要：简述：此款名为yampp-7型MP3播放器，用了一片Nokia3310手机的LCD显示屏来显示操作，使用一片FT8U245USB芯片！能使用多种小型Flash卡和多媒体卡作为歌曲文件存储器！ yampp7 is a new portable MP3 player that uses Compact Flash or MultiMedia cards for storage of songs. You'll get about 1 minute of playing time per MB on the memory card, if your songs are 128 kbp

自制MP3播放器,标签：小制作,电子样本制作,http://www.88dzw.com

简述：此款名为yampp-7型MP3播放器，用了一片Nokia3310手机的LCD显示屏来显示操作，使用一片FT8U245USB芯片！能使用多种小型Flash卡和多媒体卡作为歌曲文件存储器！

 

 

 

yampp7 is a new portable MP3 player that uses Compact Flash or MultiMedia cards for storage of songs. You'll get about 1 minute of playing time per MB on the memory card, if your songs are 128 kbps.

The player is pretty small and the EDAPCB/PCBjishu/" target="_blank" class="infotextkey">PCB has been designed to fit into a Teko "Soap" box.

It features a 84*48 pixel graphical LCD display, similar to the displays used on Nokia 3310 cell phones.

 

It's designed to operate from rechargable battery cells, either from a single 3.6V Li-Ion cell (recommended), or from 3*1.2V Ni-Mh cells. With a 600 mA Li-Ion cell, the playing time is about 12 hours, but you can find Li-Ion cells up to 1200 mAh that will fit in the player, extending the playing time to about 24 hours

 

 

It's intended to be used with replacement Li-Ion cells for Mobile Phones, making it easy (and relatively cheap) to find a suitable cell. (I use mine with a cell for a Motorola V3688 Phone).

 

 

It also features a USB interface for fast downloading of songs to the memory card, and for firmware updates

 

 

The player uses a special filesystem called YADL (Yampp Advanced Disk Layout), which maximizes the capacoty of the memory card.

It is playlist based and give the player a powerful but easy to use user interface

 

Processor

The central part of the yampp-7 player is the Atmel mega161 CPU. It's like a big-brother to the classic 8515 CPU that was used on the original yampp-3.

It has 16 kB Flash and 1024 bytes internal SRAM, both double as much as on the 8515.

It also features a bootloader option. This is been used in yampp-7, where it is now possible to download new firmware over the USB link

[1] [2]  下一页