hott_common.c File Reference

Graupner HOTT SUMD decoder. More...

#include "subsystems/radio_control.h"
#include "subsystems/radio_control/hott_common.h"
#include <BOARD_CONFIG>
#include <string.h>

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Macros
#define	HOTT_START_BYTE   0xa8
#define	HOTT_STATUS_UNINIT   0
#define	HOTT_STATUS_GOT_START   1
#define	HOTT_STATUS_GOT_HEADER1   2
#define	HOTT_STATUS_DATA   3
#define	HOTT_CRC_POLYNOME   0x1021

Functions
void	hott_common_init (struct SHott *hott_p, struct uart_periph *dev)
	Init function. More...
static uint16_t	hott_CRC16 (uint16_t crc, uint8_t value)
static void	decode_hott_buffer (const uint8_t *src, uint16_t *dst, uint8_t channels, bool *available, uint16_t *dstppm)
	Decode the raw buffer. More...
void	hott_common_decode_event (struct SHott *hott_p, struct uart_periph *dev)
	Decoding event function. More...

Detailed Description

Graupner HOTT SUMD decoder.

Definition in file hott_common.c.

Macro Definition Documentation

#define HOTT_CRC_POLYNOME   0x1021

Definition at line 51 of file hott_common.c.

Referenced by hott_CRC16().

#define HOTT_START_BYTE   0xa8

Definition at line 34 of file hott_common.c.

Referenced by hott_common_decode_event().

#define HOTT_STATUS_DATA   3

Definition at line 39 of file hott_common.c.

Referenced by hott_common_decode_event().

#define HOTT_STATUS_GOT_HEADER1   2

Definition at line 38 of file hott_common.c.

Referenced by hott_common_decode_event().

#define HOTT_STATUS_GOT_START   1

Definition at line 37 of file hott_common.c.

Referenced by hott_common_decode_event().

#define HOTT_STATUS_UNINIT   0

Definition at line 36 of file hott_common.c.

Referenced by hott_common_decode_event(), and hott_common_init().

Function Documentation

static void decode_hott_buffer ( const uint8_t *  src, uint16_t *  dst, uint8_t  channels, bool *  available, uint16_t *  dstppm  )

static

Decode the raw buffer.

Definition at line 71 of file hott_common.c.

References channel, hott_CRC16(), HOTT_NB_CHANNEL, and USEC_OF_RC_PPM_TICKS.

Referenced by hott_common_decode_event().

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void hott_common_decode_event	(	struct SHott *	hott_p,
		struct uart_periph *	dev
	)

Decoding event function.

Definition at line 98 of file hott_common.c.

References SHott::buffer, decode_hott_buffer(), SHott::expected_channels, SHott::frame_available, HOTT_NB_CHANNEL, HOTT_START_BYTE, HOTT_STATUS_DATA, HOTT_STATUS_GOT_HEADER1, HOTT_STATUS_GOT_START, HOTT_STATUS_UNINIT, SHott::idx, SHott::ppm, SHott::pulses, SHott::status, uart_char_available(), and uart_getch().

Referenced by hott_decode_event().

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void hott_common_init	(	struct SHott *	hott_p,
		struct uart_periph *	dev
	)

Init function.

Definition at line 42 of file hott_common.c.

References B115200, SHott::frame_available, HOTT_STATUS_UNINIT, SHott::status, uart_periph_set_baudrate(), uart_periph_set_bits_stop_parity(), UBITS_8, UPARITY_NO, and USTOP_1.

Referenced by radio_control_impl_init().

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static uint16_t hott_CRC16 ( uint16_t  crc, uint8_t  value  )

static

Definition at line 57 of file hott_common.c.

References crc, and HOTT_CRC_POLYNOME.

Referenced by decode_hott_buffer().

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