This command should launch the last opened book:
Code:
/ebrmain/cramfs/bin/eink-reader.app "$(head -n 1 /mnt/ext1/system/state/lastopen.txt)"
I'm not sure how or if TTS can be started by passing an additional argument.
I do see:
qml: openVoice
in the terminal output when I manually click on TTS in the reader app.
And when closing it:
close tts panel