* add a little Stash utility.
* add radio state RAII helper.
* first part of radio_state changes
* add radio_state_ to rest of apps
* fix freq_step and format
* fix unused ui_sigfrx: corrected sample rate, added back freq setting
Current Replay App , shows in the user menu a UI to select two kind of controls for the RF output level :
1-) LNA GAIN (0..40 ) dB => but it has no TX effect because it is the RX-LNA . GAIN
2-) RF AMP (0 / +14dBm , (that was correct , we have two IC's , RX / TX ) (sw is controlling weill .
Note, although SW Version 1.40 do not leave to control drictly the GAIN TX
, that Replay App , in fact, it was using the inheritated selected GAIN TX from any previous usage of MIC App.
That Pull request alllows now to have the following controls
1-) GAIN TX (0..47 ) dB (now it is OK
2-) RF AMP (0 / +14dBm , (that was correct , we have two IC's , RX / TX ) (sw is controlling weill .
Remakrs : After the change , now we can control the GAIN TX , but not "in the fly" . When we are in the Replay loop , any change of the FREQUENCY or GAIN TX will be ignored , till we play STOP / START the loop again. (but the AMP RF (0 /+14 dBs) it works in the loop withouth any problems (same as before ) .
