Rockbox Archos Recorder 6 Especificações descarregar pdf (Página 105)

Chapter 11. Plugins 105

have a DIN-style circular jack with 8 pins (7 in a ∼ 270 degree circle, one in the center).

A standard 5-pin DIN plug is OK for this, since we do not use the other (power) pins.

As OEM, they shuﬄed the pins around a bit, better check ﬁrst if it is not genuine

Alpine. The bus pin is pulled high to 12 volts with a ∼ 2kOhm resistor, pulses driven

low. Because it is open collector, this is not harmful to the Archos.

ASCII art of the 4-pin headphone plug:

/ \

\_/ left -> Alpine pin 5

|_| right -> Alpine pin 4

|_| remote -> Alpine pin 1

|_| ground -> Alpine pin 2 + 3

The remote pin can be programmed bidirectional, that is the reason this works. Very

luckily the M-Bus uses a single wire communication and the two radios I tried are happy

with the 3.3 Volt level the Arcos can deliver. So the connection is a simple cable! For

all protocols requiring more lines, an external controller would be necessary.

Note: Archos FMs do not have the remote pin internally connected, but one unit that

was opened was internally prepared for it, a matter of closing a bridge.

11.4.2 Battery Benchmark

The Battery Benchmark plugin enables you to test your battery’s performance whilst

using your player normally. Results can be submitted to the ZBatteryRuntime wiki

page.

How it works

Once loaded, Battery Benchmark runs in the background recording various informa-

tion about your battery to memory. A new point is written to memory every minute.

Every time the disk is accessed for any reason (such as reﬁlling the audio buﬀer, open-

ing a directory or entering USB mode etc.) then the information in memory is written

to disk. Once the memory becomes full (after many hours), then the data are written

to disk anyway. This is done so that the data are not biased by excessive additional

disk accesses. The ﬁle is written to the root directory of your player and is called

battery bench.txt. The plugin will continue to log info until:

• Another plugin is loaded.

• The player is shut down.

• The battery is empty.

Benchmarks can be resumed if you accidentally load a plugin, or turn oﬀ your player,

so long as the log ﬁle battery bench.txt is not deleted.

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Rockbox Archos Recorder 6 Especificações Página 105