C API for encoding as tones?

[kubukoz]

Hi! I'm liking the library a lot so far, but when I tried using it on an embedded device (a Playdate), it runs pretty slow with the usual TX encoding. I tried switching the mode to GGWAVE_OPERATING_MODE_TX_ONLY_TONES, but it just logs

Tx is disabled - cannot transmit data with this GGWave instance

and returns 0. Looking at the code in the ggwave_encode function of the C API, it seems to look directly at ggWave->txWaveform, ignoring tones. Also, it calls GGWave::init explicitly, which logs the above message if m_isTxEnabled is false (which it is, in TX_ONLY_TONES mode).

So... I don't really know how one would encode as "only tones", even more so with just the C API. Am I missing something?

[ggerganov]

Thanks for the interest in ggwave!

The r2t2 and arduino-tx examples demonstrate the usage of "only tones" mode:

ggwave/examples/r2t2/main.cpp

Lines 73 to 75 in bac95c8

	GGWave::OperatingMode mode = GGWAVE_OPERATING_MODE_TX | GGWAVE_OPERATING_MODE_TX_ONLY_TONES;
	if (useDSS) mode |= GGWAVE_OPERATING_MODE_USE_DSS;