System Library Functions

Generic system functions similiar to the run-time C library. More...

Functions
void	sysLogGPSData ()
	Log the current GPS position.
uint16_t	sysCRC16 (uint8_t *buffer, uint8_t length, uint16_t crc)
	Calculate the CRC-16 CCITT of buffer that is length bytes long.
void	sysPAOutput (bool_t state)
	Control the PA output.

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Detailed Description

Generic system functions similiar to the run-time C library.

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Function Documentation

uint16_t sysCRC16	(	uint8_t *	buffer,
		uint8_t	length,
		uint16_t	crc
	)

Calculate the CRC-16 CCITT of buffer that is length bytes long.

The crc parameter allow the calculation on the CRC on multiple buffers.

Parameters:

	buffer	Pointer to data buffer.
	length	number of bytes in data buffer
	crc	starting value

Returns:

CRC-16 of buffer[0 .. length]

Referenced by tncTxPacket().

void sysLogGPSData

(

)

Log the current GPS position.

References gpsPosition, LOG_COORD, logInt32(), logType(), logUint16(), and logUint8().

Referenced by main().

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void sysPAOutput

(

bool_t

state

)

[inline]

Control the PA output.

Parameters:

state

true to turn on PA; otherwise false

References IO_PA.

Referenced by diagPort(), psk31TimeUpdate(), psk31TxPacket(), tncTimeUpdate(), and tncTxPacket().