sumd.h File Reference

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Functions
int	sumd_decode (uint8_t byte, uint8_t *rssi, uint8_t *rx_count, uint16_t *channel_count, uint16_t *channels, uint16_t max_chan_count)

Detailed Description

RC protocol definition for Graupner HoTT transmitter

Author

Marco Bauer marco.nosp@m.@wtn.nosp@m.s.de

Definition in file sumd.h.

Function Documentation

sumd_decode()

int sumd_decode	(	uint8_t	byte,
		uint8_t *	rssi,
		uint8_t *	rx_count,
		uint16_t *	channel_count,
		uint16_t *	channels,
		uint16_t	max_chan_count
	)

Decoder for SUMD/SUMH protocol

Parameters

byte	current char to read
rssi	pointer to a byte where the RSSI value is written back to
rx_count	pointer to a byte where the receive count of packets signce last wireless frame is written back to
channels	pointer to a datastructure of size max_chan_count where channel values (12 bit) are written back to
max_chan_count	maximum channels to decode - if more channels are decoded, the last n are skipped and success (0) is returned

Returns

0 for success (a decoded packet), 1 for no packet yet (accumulating), 2 for unknown packet, 3 for out of sync, 4 for checksum error

Definition at line 137 of file sumd.cpp.

Referenced by F4Light::PPM_parser::_process_dsm_pulse(), Linux::RCInput::add_sumd_input(), and F4Light::DSM_parser::init().

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