AP_Notify: add comments explaining tonealarm tone format

6 years ago · 08b2676a8f
1 changed files with 3 additions and 0 deletions
--- a/libraries/AP_Notify/ToneAlarm.cpp
+++ b/libraries/AP_Notify/ToneAlarm.cpp
@ -28,6 +28,9 @@
 extern const AP_HAL::HAL& hal;
 // Tunes follow the syntax of the Microsoft GWBasic/QBasic PLAY
 //   statement, with some exceptions and extensions.
 // See http://firmware.ardupilot.org/Tools/ToneTester/
 const AP_ToneAlarm::Tone AP_ToneAlarm::_tones[] {
 #define AP_NOTIFY_TONE_QUIET_NEG_FEEDBACK 0
    { "MFT200L4<<<B#A#2", false },