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Hi there,

i am currently trying to learn the morse code. I thougt it would be fun to have rockbox as an aid, so i started to write a plugin for that.

This plugin currently has a limited functionality, but the current things are implemented:

1. Morsing of custom texts, typed from the rockbox keyboard
2. Morsing of random chars, till the battery drains (or less ;))
3. Input of own Call and 'morsing' the same
4. selection of speeds from 1-45 WPM in steps of 3
5. selection of chars from 5 mixable groups
   1. letters
   2. numbers
   3. punctuation marks
   4. special chars (KA,BT,AR,VE)
   5. pauses

It would be very nice if someone tested these on some soft-codec targets. I included the source tarball (please add plugin to SOURCES and CATEGORIES if using this), a diff on r17715 and the binary .rock for the sansa c250.

Idd be very happy if, with a little help, this could move upstream. I am new to the plugin api and need some help especially in using the definitions to make this work on different DAPs (avoid building this on targets that don't support some features and so on). Correct me if i am wrong, but his should from my point of view work with all SWCODEC devices with LCD. I tried to write at least readable code and added some comments for the curious.

This builds at least on the c250 and works for me.

Thanks, Joel

Remind me, if i forgot something.

Hi there,

first of all: this is my first contribution to rockbox and I tried my best to make myself familiar with the way things work there. I am sure, not everything is where it belongs. Please help me to get things in order :).

second: thanks to the author of Patch  FS#1803  that made this possible.

The purpose of this patch is to watch the tuner reported field strength (estimate) and mute, when it drops below a customizable threshold. Wether muting or not as well as the threshold are customizable in the fm tuner menu. It should not interfere with manual muting and should not affect recording (i didn’t test that yet). THe threshold is specified in pseudo-dBuV.
It also adjusts frequency display to display as MMM.KKK instead of MMM.KK. This is for people who adjust region settings and channel widths.

My testing conditions were limited to the sansa c250.  FS#1803  reports to work on the tuner chips LV24020LP (e.g. sansa c250) and TEA5767. I only tested the first. Please report back possible field strength values you see on devices using these chips.

This code should not break anything. I did a testbuild for some iPods (without tuner) that compiled cleanly. Simulator also works.

Currently only english and german translation are done.

User guide:
This patch conditionally adds 1 or 2 lines to the tuner main window that look like this:

Sig: [-M] -235dBuV
Automute below -555dBuV

The second line is only displayed if automute is enabled. The first line shows the status of the tuner. The 2 characters in the braces exlain as [ab]:

a: either 'O' or '-' 
   'O': current field strength is above threshold
   '-': current field strength is equal to or below threshold
b: either 'M' or '-'
   'M': will mute on or below threshold
   '-': automute disabled.
(both are only updated on field strength change)

The second line should be selfexplaining, same for the menu entries.

Request for comments!