Remote Control

Functions
char	rc_get_status (void)
char	rc_get_data (unsigned char channel)
unsigned char	rc_button_sequence (unsigned char channel, unsigned char len)

---

Function Documentation

unsigned char rc_button_sequence	(	unsigned char	channel,
		unsigned char	len
	)

Return a value indicating a binary sequence on RC button 'channel'.

This function keeps a static internal value and counter. Each time this function is called, the buttons on channel are sampled. If the lower button is pressed, a 0 is inserted into least signficant but of the value, and the counter incremented. If the upper button is pressed, a 1 is inserted and the counter is incremented.

When the counter reaches 'len', the function returns the value. Until then, it returns -1, indicating that the sequence is not yet complete.

char rc_get_data

(

unsigned char

channel

)

Retrieve most recently sampled data from the specified channel on the remote control unit. All values returned range from -127 to +127. For joysticks, 0 is the center positionm, full left or full up is -127, and full down or full right is +127. For buttons, 0 indicates that neither button for the channel is pressed, -127 indicates the lower button, and 127 indicates the upper.

char rc_get_status

(

void

)

Return 1 if the remote control is on, 0 if off, 4 if disabled (master processor is in autonomous mode).