ledmodule.h

WWVB receiver using AVR.

/* $Id: ledmodule.h,v 1.9 2005/04/28 21:37:39 simimeie Exp $
 * Functions for communicating with the LED module.
 * The module is connected through an i2c bus, it consists of two SAA 1064
 * drivers.
 */ 

#ifndef _LEDMODULE_H_ 
#define _LEDMODULE_H_

#ifdef LEDMODULE

extern uint8_t led_digits[16];
#define led_dot 0x01
#define led_dash 0x80
#define led_letter_n 0x8a
#define led_letter_o 0x8e
#define led_letter_S 0xe6
#define led_letter_i 0x08
#define led_letter_g 0xf7

extern uint8_t led_brightness;
extern uint8_t led_statusleds;
#define led_status_dcfbit	0x01	/* Received a DCF77 bit */
#define led_status_dcfgood	0x02	/* The received signal was decoded OK */
#define led_status_netrx	0x04	/* A packet was received from the net */
#define led_status_nettx	0x08	/* A packet was sent to the net */
#define led_status_netping	0x10	/* We got a PING request */
#define led_status_netntp	0x20	/* We got a NTP request */
#define led_status_netrcon	0x40	/* We got a RCON request */
#define led_status_dispovr	0x80	/* The display is overriden */
/* For temporarily overriding the time display.
 * Can be set via serial interface or network */
extern uint8_t led_dispoverride[7];
extern uint8_t led_dispovcnt;

/* This sets one digit on the LED module.
 * digit   is the number of the digit (0 - 7)
 * val     is a bitfield that contains the values to set. See the leddigits
 *         array for useful values for this. */
void set_led_digit(uint8_t digit, uint8_t val);

/* Configures the brightness of the LED module, or rather: the current the
 * driver allows through them.
 * The values 0 through 7 can be used, corresponding to 0 through 21 mA */
void set_led_brightness(void);

/* Initialize the LED module... This basically enables the pullups on the I2C
 * Bus pins */
void led_init(void);

#else /* ndef LEDMODULE */

#define set_led_digit(d, v) if (0) { }
#define set_led_brightness() if (0) { }
#define led_init() if (0) { }

#endif /* ndef LEDMODULE */

#endif