ezchronos.c

// *************************************************************************************************
//
//	Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/ 
//	 
//	 
//	  Redistribution and use in source and binary forms, with or without 
//	  modification, are permitted provided that the following conditions 
//	  are met:
//	
//	    Redistributions of source code must retain the above copyright 
//	    notice, this list of conditions and the following disclaimer.
//	 
//	    Redistributions in binary form must reproduce the above copyright
//	    notice, this list of conditions and the following disclaimer in the 
//	    documentation and/or other materials provided with the   
//	    distribution.
//	 
//	    Neither the name of Texas Instruments Incorporated nor the names of
//	    its contributors may be used to endorse or promote products derived
//	    from this software without specific prior written permission.
//	
//	  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
//	  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
//	  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
//	  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
//	  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
//	  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
//	  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
//	  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
//	  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
//	  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
//	  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// *************************************************************************************************
// Initialization and control of application.
// *************************************************************************************************

// *************************************************************************************************
// Include section

// system
#include "project.h"
#include <string.h>

// driver
#include "clock.h"
#include "display.h"
#include "vti_as.h"
#include "vti_ps.h"
#include "radio.h"
#include "buzzer.h"
#include "ports.h"
#include "timer.h"
#include "pmm.h"
#include "rf1a.h"

// logic
#include "menu.h"
#include "date.h"
#include "alarm.h"
#include "stopwatch.h"
#include "battery.h"
#include "temperature.h"
#include "altitude.h"
#ifdef FEATURE_PROVIDE_ACCEL
#include "acceleration.h"
#endif
//pfs
#ifndef ELIMINATE_BLUEROBIN 
#include "bluerobin.h"
#endif
#include "rfsimpliciti.h"
#include "simpliciti.h"
#ifdef CONFIG_TEST
#include "test.h"
#endif
#ifdef CONFIG_EGGTIMER
#include "eggtimer.h"
#endif
#ifdef CONFIG_PHASE_CLOCK
#include "phase_clock.h"
#endif
#ifdef CONFIG_SIDEREAL
#include "sidereal.h"
#endif

#ifdef CONFIG_INFOMEM
#include "infomem.h"
#endif
#ifdef CONFIG_STRENGTH
#include "strength.h"
#endif

#include "mrfi.h"
#include "nwk_types.h"


// *************************************************************************************************
// Prototypes section
void init_application(void);
void init_global_variables(void);
void wakeup_event(void);
void process_requests(void);
void display_update(void);
void idle_loop(void);
void configure_ports(void);
void read_calibration_values(void);

void menu_skip_next(line_t line);


// *************************************************************************************************
// Defines section

// Number of calibration data bytes in INFOA memory
#define CALIBRATION_DATA_LENGTH		(13u)


// *************************************************************************************************
// Global Variable section

// Variable holding system internal flags
volatile s_system_flags sys;

// Variable holding flags set by logic modules 
volatile s_request_flags request;

// Variable holding message flags
volatile s_message_flags message;

// Global radio frequency offset taken from calibration memory
// Compensates crystal deviation from 26MHz nominal value
u8 rf_frequoffset;

// Function pointers for LINE1 and LINE2 display function 
void (*fptr_lcd_function_line1)(u8 line, u8 update);
void (*fptr_lcd_function_line2)(u8 line, u8 update);

// *************************************************************************************************
// Extern section
#ifdef CONFIG_ALTI_ACCUMULATOR
extern u8 alt_accum_enable;	// used by altitude accumulator function
#endif
extern void start_simpliciti_sync(void);

extern u16 ps_read_register(u8 address, u8 mode);
extern u8 ps_write_register(u8 address, u8 data);

// rf hardware address
static const addr_t   sMyROMAddress = {THIS_DEVICE_ADDRESS};

// *************************************************************************************************
// @fn          main
// @brief       Main routine
// @param       none
// @return      none
// *************************************************************************************************
int main(void)
{
	// Init MCU 
	init_application();

	// Assign initial value to global variables
	init_global_variables();

#ifdef CONFIG_TEST
	// Branch to welcome screen
	test_mode();
#else
	display_all_off();
#endif
	
	// Main control loop: wait in low power mode until some event needs to be processed
	while(1)
	{
		// When idle go to LPM3
    	idle_loop();

    	// Process wake-up events
    	if (button.all_flags || sys.all_flags) wakeup_event();
    	
    	// Process actions requested by logic modules
    	if (request.all_flags) process_requests();
    	
    	// Before going to LPM3, update display
    	if (display.all_flags) display_update();	
 	}	
}


// *************************************************************************************************
// @fn          init_application
// @brief       Initialize the microcontroller.
// @param       none
// @return      none
// *************************************************************************************************
void init_application(void)
{
	volatile unsigned char *ptr;
	  
	// ---------------------------------------------------------------------
	// Enable watchdog
	
	// Watchdog triggers after 16 seconds when not cleared
#ifdef USE_WATCHDOG		
	WDTCTL = WDTPW + WDTIS__512K + WDTSSEL__ACLK;
#else
	WDTCTL = WDTPW + WDTHOLD;
#endif
	
	// ---------------------------------------------------------------------
	// Configure PMM
	SetVCore(3);
	
	// Set global high power request enable
	PMMCTL0_H  = 0xA5;
	PMMCTL0_L |= PMMHPMRE;
	PMMCTL0_H  = 0x00;	

	// ---------------------------------------------------------------------
	// Enable 32kHz ACLK	
	P5SEL |= 0x03;                            // Select XIN, XOUT on P5.0 and P5.1
	UCSCTL6 &= ~XT1OFF;        				  // XT1 On, Highest drive strength
	UCSCTL6 |= XCAP_3;                        // Internal load cap

	UCSCTL3 = SELA__XT1CLK;                   // Select XT1 as FLL reference
	UCSCTL4 = SELA__XT1CLK | SELS__DCOCLKDIV | SELM__DCOCLKDIV;      
	
	// ---------------------------------------------------------------------
	// Configure CPU clock for 12MHz
	_BIS_SR(SCG0);                  // Disable the FLL control loop
	UCSCTL0 = 0x0000;          // Set lowest possible DCOx, MODx
	UCSCTL1 = DCORSEL_5;       // Select suitable range
	UCSCTL2 = FLLD_1 + 0x16E;  // Set DCO Multiplier
	_BIC_SR(SCG0);                  // Enable the FLL control loop

    // Worst-case settling time for the DCO when the DCO range bits have been
    // changed is n x 32 x 32 x f_MCLK / f_FLL_reference. See UCS chapter in 5xx
    // UG for optimization.
    // 32 x 32 x 8 MHz / 32,768 Hz = 250000 = MCLK cycles for DCO to settle
	uint8_t i;
	for (i=0; i<10; i++)
    __delay_cycles(25000);
  
	// Loop until XT1 & DCO stabilizes, use do-while to insure that 
	// body is executed at least once
	do
	{
        UCSCTL7 &= ~(XT2OFFG + XT1LFOFFG + XT1HFOFFG + DCOFFG);
		SFRIFG1 &= ~OFIFG;                      // Clear fault flags
	} while ((SFRIFG1 & OFIFG));	

	
	// ---------------------------------------------------------------------
	// Configure port mapping
	
	// Disable all interrupts
	__disable_interrupt();
	// Get write-access to port mapping registers:
	PMAPPWD = 0x02D52;
	// Allow reconfiguration during runtime:
	PMAPCTL = PMAPRECFG;

	// P2.7 = TA0CCR1A or TA1CCR0A output (buzzer output)
	ptr  = &P2MAP0;
	*(ptr+7) = PM_TA1CCR0A;
	P2OUT &= ~BIT7;
	P2DIR |= BIT7;

	// P1.5 = SPI MISO input
	ptr  = &P1MAP0;
	*(ptr+5) = PM_UCA0SOMI;
	// P1.6 = SPI MOSI output
	*(ptr+6) = PM_UCA0SIMO;
	// P1.7 = SPI CLK output
	*(ptr+7) = PM_UCA0CLK;

	// Disable write-access to port mapping registers:
	PMAPPWD = 0;
	// Re-enable all interrupts
	__enable_interrupt();
	
	// ---------------------------------------------------------------------
	// Configure ports

	// ---------------------------------------------------------------------
	// Reset radio core
	radio_reset();
	radio_powerdown();	
	
	#ifdef FEATURE_PROVIDE_ACCEL
	// ---------------------------------------------------------------------
	// Init acceleration sensor
	as_init();
	#else
	as_disconnect();
	#endif
	
	// ---------------------------------------------------------------------
	// Init LCD
	lcd_init();
  
	// ---------------------------------------------------------------------
	// Init buttons
	init_buttons();

	// ---------------------------------------------------------------------
	// Configure Timer0 for use by the clock and delay functions
	Timer0_Init();
	
	// ---------------------------------------------------------------------
	// Init pressure sensor
	ps_init();
}


// *************************************************************************************************
// @fn          init_global_variables
// @brief       Initialize global variables.
// @param       none
// @return      none
// *************************************************************************************************
void init_global_variables(void)
{
	// --------------------------------------------
	// Apply default settings

	menu_L1_position=0;
	menu_L2_position=0;
	// set menu pointers to default menu items
	ptrMenu_L1 = menu_L1[menu_L1_position];
	ptrMenu_L2 = menu_L2[menu_L2_position];

	// Assign LINE1 and LINE2 display functions
	fptr_lcd_function_line1 = ptrMenu_L1->display_function;
	fptr_lcd_function_line2 = ptrMenu_L2->display_function;

	// Init system flags
	button.all_flags 	= 0;
	sys.all_flags 		= 0;
	request.all_flags 	= 0;
	display.all_flags 	= 0;
	message.all_flags	= 0;
	
	// Force full display update when starting up
	display.flag.full_update = 1;

#ifndef ISM_US
	// Use metric units when displaying values
    sys.flag.use_metric_units = 1;
#else 
#ifdef CONFIG_METRIC_ONLY
	sys.flag.use_metric_units = 1;
#endif
#endif
	
	// Read calibration values from info memory
	read_calibration_values();
#ifdef CONFIG_ALTI_ACCUMULATOR
	// By default, don't have the altitude accumulator running
	alt_accum_enable = 0;
#endif
	
	
	#ifdef CONFIG_INFOMEM
	if(infomem_ready()==-2)
	{
		infomem_init(INFOMEM_C, INFOMEM_C+2*INFOMEM_SEGMENT_SIZE);
	}
	#endif
	
	// Set system time to default value
	reset_clock();
	
	// Set date to default value
	reset_date();
	
	#ifdef CONFIG_SIDEREAL
	reset_sidereal_clock();
	#endif
	
	#ifdef CONFIG_ALARM
	// Set alarm time to default value 
	reset_alarm();
	#endif
	
	// Set buzzer to default value
	reset_buzzer();
	
#ifdef CONFIG_STOP_WATCH
	// Reset stopwatch
	reset_stopwatch();
#endif
	
	// Reset altitude measurement
#ifdef CONFIG_ALTITUDE
	reset_altitude_measurement();
#endif
	
	#ifdef FEATURE_PROVIDE_ACCEL
	// Reset acceleration measurement
	reset_acceleration();
	#endif
	
	// Reset BlueRobin stack
	//pfs
	#ifndef ELIMINATE_BLUEROBIN 
	reset_bluerobin();
	#endif

#ifdef CONFIG_EGGTIMER
	init_eggtimer(); // Initialize eggtimer
#endif

#ifdef CONFIG_PROUT
        reset_prout();
#endif

#ifdef CONFIG_PHASE_CLOCK
	// default program
	sPhase.program = 0;
#endif

	// Reset SimpliciTI stack
	reset_rf();
	
	// Reset temperature measurement 
	reset_temp_measurement();

	#ifdef CONFIG_BATTERY
	// Reset battery measurement
	reset_batt_measurement();
	battery_measurement();
	#endif
}


// *************************************************************************************************
// @fn          wakeup_event
// @brief       Process external / internal wakeup events.
// @param       none
// @return      none
// *************************************************************************************************
void wakeup_event(void)
{
	// Enable idle timeout
	sys.flag.idle_timeout_enabled = 1;

	// If buttons are locked, only display "buttons are locked" message
	if (button.all_flags && sys.flag.lock_buttons)
	{
		// Show "buttons are locked" message synchronously with next second tick
		if (!((BUTTON_NUM_IS_PRESSED && BUTTON_DOWN_IS_PRESSED) || BUTTON_BACKLIGHT_IS_PRESSED))
		{
			message.flag.prepare     = 1;
			message.flag.type_locked = 1;
		}
		
		// Clear buttons
		button.all_flags = 0;	
	}
	// Process long button press event (while button is held)
	else if (button.flag.star_long)
	{
		// Clear button event
		button.flag.star_long = 0;

		// Call sub menu function
		ptrMenu_L1->mx_function(LINE1);

		// Set display update flag
		display.flag.full_update = 1;
	}
	else if (button.flag.num_long)
	{
		// Clear button event
		button.flag.num_long = 0;
		
		// Call sub menu function
		ptrMenu_L2->mx_function(LINE2);

		// Set display update flag
		display.flag.full_update = 1;	
	}
	// Process single button press event (after button was released)
	else if (button.all_flags)
	{
		// M1 button event ---------------------------------------------------------------------
		// (Short) Advance to next menu item
		if(button.flag.star) 
		{
			//skip to next menu item
			ptrMenu_L1->nx_function(LINE1);
			
			// Set Line1 display update flag
			display.flag.line1_full_update = 1;

			// Clear button flag
			button.flag.star = 0;
		}
		// NUM button event ---------------------------------------------------------------------
		// (Short) Advance to next menu item
		else if(button.flag.num) 
		{
			//skip to next menu item
			ptrMenu_L2->nx_function(LINE2);
			
			// Set Line2 display update flag
			display.flag.line2_full_update = 1;

			// Clear button flag
			button.flag.num = 0;
		}	
		// UP button event ---------------------------------------------------------------------
		// Activate user function for Line1 menu item
		else if(button.flag.up) 	
		{
			// Call direct function
			ptrMenu_L1->sx_function(LINE1);

			// Set Line1 display update flag
			display.flag.line1_full_update = 1;
	
			// Clear button flag	
			button.flag.up = 0;
		}			
		// DOWN button event ---------------------------------------------------------------------
		// Activate user function for Line2 menu item
		else if(button.flag.down) 	
		{
			// Call direct function
			ptrMenu_L2->sx_function(LINE2);

			// Set Line1 display update flag
			display.flag.line2_full_update = 1;
	
			// Clear button flag	
			button.flag.down = 0;
		}			
	}
	
	// Process internal events
	if (sys.all_flags)
	{
		// Idle timeout ---------------------------------------------------------------------
		if (sys.flag.idle_timeout)
		{
			// Clear timeout flag	
			sys.flag.idle_timeout = 0;	
			
			// Clear display
			clear_display();	

			// Set display update flags
			display.flag.full_update = 1;
		}
	}
	
	// Disable idle timeout
	sys.flag.idle_timeout_enabled = 0;
}


// *************************************************************************************************
// @fn          process_requests
// @brief       Process requested actions outside ISR context.
// @param       none
// @return      none
// *************************************************************************************************
void process_requests(void)
{
#ifdef ECO_DISPLAY
	// Change display freq when needed
	if (request.flag.eco_display) eco_display();
#endif	
	// Do temperature measurement
	if (request.flag.temperature_measurement) temperature_measurement(FILTER_ON);
	
	// Do pressure measurement
#ifdef CONFIG_ALTITUDE
  	if (request.flag.altitude_measurement) do_altitude_measurement(FILTER_ON);
#endif
#ifdef CONFIG_ALTI_ACCUMULATOR
	if (request.flag.altitude_accumulator) altitude_accumulator_periodic();
#endif
	
	#ifdef FEATURE_PROVIDE_ACCEL
	// Do acceleration measurement
	if (request.flag.acceleration_measurement) do_acceleration_measurement();
	#endif
	
	#ifdef CONFIG_BATTERY
	// Do voltage measurement
	if (request.flag.voltage_measurement) battery_measurement();
	#endif
	
	#ifdef CONFIG_ALARM
	// Generate alarm (two signals every second)
	if (request.flag.alarm_buzzer) start_buzzer(2, BUZZER_ON_TICKS, BUZZER_OFF_TICKS);
	#endif
	
#ifdef CONFIG_EGGTIMER
	// Generate alarm (two signals every second)
	if (request.flag.eggtimer_buzzer) start_buzzer(2, BUZZER_ON_TICKS, BUZZER_OFF_TICKS);
#endif
	
	
#ifdef CONFIG_STRENGTH
	if (request.flag.strength_buzzer && strength_data.num_beeps != 0) 
	{
		start_buzzer(strength_data.num_beeps, 
			     STRENGTH_BUZZER_ON_TICKS, 
			     STRENGTH_BUZZER_OFF_TICKS);
		strength_data.num_beeps = 0;
	}
#endif

	// Reset request flag
	request.all_flags = 0;
}


// *************************************************************************************************
// @fn          display_update
// @brief       Process display flags and call LCD update routines.
// @param       none
// @return      none
// *************************************************************************************************
void display_update(void)
{
	u8 line;
	u8 string[8];
	
	// ---------------------------------------------------------------------
	// Call Line1 display function
	if (display.flag.full_update ||	display.flag.line1_full_update)
	{
		clear_line(LINE1);	
		fptr_lcd_function_line1(LINE1, DISPLAY_LINE_UPDATE_FULL);
	}
	else if (ptrMenu_L1->display_update() &&!message.flag.block_line1)
	{
		// Update line1 only when new data is available
		fptr_lcd_function_line1(LINE1, DISPLAY_LINE_UPDATE_PARTIAL);
	}

	// ---------------------------------------------------------------------
	// Call Line2 display function
	if (display.flag.full_update || display.flag.line2_full_update)
	{
		clear_line(LINE2);
		fptr_lcd_function_line2(LINE2, DISPLAY_LINE_UPDATE_FULL);
	}
	else if (ptrMenu_L2->display_update() && !message.flag.block_line2)
	{
		// Update line2 only when new data is available
		fptr_lcd_function_line2(LINE2, DISPLAY_LINE_UPDATE_PARTIAL);
	}

	// ---------------------------------------------------------------------
	// If message text should be displayed
	if (message.flag.show)
	{
		line = LINE2;
		
		// Select message to display
		if (message.flag.type_locked)			memcpy(string, "  LOCT", 6);
		else if (message.flag.type_unlocked)	memcpy(string, "  OPEN", 6);
		else if (message.flag.type_lobatt)		memcpy(string, "LOBATT", 6);
		else if (message.flag.type_no_beep_on)  memcpy(string, " SILNT", 6);
		else if (message.flag.type_no_beep_off) memcpy(string, "  BEEP", 6);
		#ifdef CONFIG_ALARM 
		else if (message.flag.type_alarm_off_chime_off)	
		{
			memcpy(string, " OFF", 4);
			line = LINE1;
		}
		else if (message.flag.type_alarm_off_chime_on)	
		{
			memcpy(string, "OFFH", 4);
			line = LINE1;
		}
		else if (message.flag.type_alarm_on_chime_off)
		{
			memcpy(string, "  ON", 4);
			line = LINE1;
		}
		else if (message.flag.type_alarm_on_chime_on)
		{
			memcpy(string, " ONH", 4);
			line = LINE1;
		}
		#endif
        
		
		// Clear previous content
		clear_line(line);
		if(line == LINE2) 	fptr_lcd_function_line2(line, DISPLAY_LINE_CLEAR);
		else				fptr_lcd_function_line1(line, DISPLAY_LINE_CLEAR);
		
		if (line == LINE2) 	display_chars(LCD_SEG_L2_5_0, string, SEG_ON);
		else 				display_chars(LCD_SEG_L1_3_0, string, SEG_ON);
		
		// Next second tick erases message and repaints original screen content (full_update)
		message.all_flags = 0;
		if(line == LINE2) 	message.flag.block_line2 = 1;
		else				message.flag.block_line1 = 1;
		message.flag.erase = 1;
	}
	
	// ---------------------------------------------------------------------
	// Restore blinking icons (blinking memory is cleared when calling set_value)
	if (display.flag.full_update) 
	{
	//pfs
	#ifndef ELIMINATE_BLUEROBIN
		if (is_bluerobin() == BLUEROBIN_CONNECTED) 
		{
			// Turn on beeper icon to show activity
			display_symbol(LCD_ICON_BEEPER1, SEG_ON_BLINK_OFF);
			display_symbol(LCD_ICON_BEEPER2, SEG_ON_BLINK_OFF);
			display_symbol(LCD_ICON_BEEPER3, SEG_ON_BLINK_OFF);
		}
	#endif
	}
	
	// Clear display flag
	display.all_flags = 0;
}


// *************************************************************************************************
// @fn          to_lpm
// @brief       Go to LPM0/3. 
// @param       none
// @return      none
// *************************************************************************************************
void to_lpm(void)
{
	// Go to LPM3
	_BIS_SR(LPM3_bits + GIE); 
	__no_operation();
}


// *************************************************************************************************
// @fn          idle_loop
// @brief       Go to LPM. Service watchdog timer when waking up.
// @param       none
// @return      none
// *************************************************************************************************
void idle_loop(void)
{
	#ifdef CONFIG_CW_TIME
	// what I'd like to do here is set a morsepos variable
	// if non-zero it is how many digits we have left to go
	// on sending the time. 
	// we also would have a morse var that would only get set 
	// the first send and reset when not in view so we'd only
	// send the time once

#define CW_DIT_LEN CONV_MS_TO_TICKS(50)    // basic element size (100mS)

	static int morse=0;       // should send morse == 1
	static int morsepos=0; // position in morse time (10 hour =1, hour=2, etc.)
	static int morsehr; // cached hour for morse code
	static int morsemin;  // cached minute for morse code
	static int morsedig=-1; // current digit
	static int morseel; // current element in digit (always 5 elements max)
	static unsigned int morseinitdelay; // start up delay

  // We only send the time in morse code if the seconds display is active, and then only
  // once per activation

	if (sTime.line1ViewStyle == DISPLAY_ALTERNATIVE_VIEW)
	  {
	    if (!morse)   // this means its the first time (we reset this to zero in the else)
		{

			morse=1;  // mark that we are sending
			morsepos=1;  // initialize pointer

			// Jim pointed out it is remotely possible that a button
			// int could wake up this routine and then the hour could
			// flip over after reading so I added this "do" loop

			do {
				morsehr=sTime.hour;  // and cache
				morsemin=sTime.minute;
			} while (morsehr!=sTime.hour);

			morsedig=-1;  // not currently sending digit
			morseinitdelay=45000;  // delay for a bit before starting so the key beep can quiet down

		}

		if (morseinitdelay)   // this handles the initial delay
		{
			morseinitdelay--;
			return;  // do not sleep yet or no event will get scheduled and we'll hang for a very long time
		}

	    if (!is_buzzer() && morsedig==-1)  // if not sending anything
		{

			morseel=0;                     // start a new character
			switch (morsepos++)            // get the right digit
			{
				case 1:
					morsedig=morsehr/10;
					break;
				case 2:
					morsedig=morsehr%10;
					break;
				case 3:
					morsedig=morsemin/10;
					break;
				case 4:
					morsedig=morsemin%10;
					break;
				default: 
					morsepos=5;  // done for now
			}
			if (morsedig==0) 
				morsedig=10;  // treat zero as 10 for code algorithm
		}

	    // now we have a digit and we need to send element
		if (!is_buzzer()&&morsedig!=-1)
		{

			int digit=morsedig;
			// assume we are sending dit for 1-5 or dah for 6-10 (zero is 10)
			int ditdah=(morsedig>5)?1:0;  
			int dit=CW_DIT_LEN;
			if (digit>=6)
				digit-=5;   // fold digits 6-10 to 1-5
			if (digit>=++morseel)
				ditdah=ditdah?0:1;  // flip dits and dahs at the right point

			// send the code
			start_buzzer(1,ditdah?dit:(3*dit),(morseel>=5)?10*dit:dit);

			// all digits have 5 elements
			if (morseel==5)
				morsedig=-1;

		}

	} else {
	  morse=0;  // no morse code right now
	}

#endif
	// To low power mode
	to_lpm();

#ifdef USE_WATCHDOG
	// Service watchdog (reset counter)
	WDTCTL = (WDTCTL &0xff) | WDTPW | WDTCNTCL;
#endif
}


// *************************************************************************************************
// @fn          read_calibration_values
// @brief       Read calibration values for temperature measurement, voltage measurement
//				and radio from INFO memory.
// @param       none
// @return      none
// *************************************************************************************************
void read_calibration_values(void)
{
	u8 cal_data[CALIBRATION_DATA_LENGTH];		// Temporary storage for constants
	u8 i;
	u8 * flash_mem;         					// Memory pointer
	
	// Read calibration data from Info D memory
	flash_mem = (u8 *)0x1800;
	for (i=0; i<CALIBRATION_DATA_LENGTH; i++)
	{
		cal_data[i] = *flash_mem++;
	}
	
	if (cal_data[0] == 0xFF) 
	{
		// If no values are available (i.e. INFO D memory has been erased by user), assign experimentally derived values	
		rf_frequoffset	= 4;
		sTemp.offset 	= -250;
		#ifdef CONFIG_BATTERY
		sBatt.offset 	= -10;	
		#endif
		simpliciti_ed_address[0] = sMyROMAddress.addr[0];
		simpliciti_ed_address[1] = sMyROMAddress.addr[1];
		simpliciti_ed_address[2] = sMyROMAddress.addr[2];
		simpliciti_ed_address[3] = sMyROMAddress.addr[3];
#ifdef CONFIG_ALTITUDE
		sAlt.altitude_offset	 = 0;
#endif
	}
	else
	{
		// Assign calibration data to global variables
		rf_frequoffset	= cal_data[1];	
		// Range check for calibrated FREQEST value (-20 .. + 20 is ok, else use default value)
		if ((rf_frequoffset > 20) && (rf_frequoffset < (256-20)))
		{
			rf_frequoffset = 0;
		} 
		sTemp.offset 	= (s16)((cal_data[2] << 8) + cal_data[3]);
		#ifdef CONFIG_BATTERY
		sBatt.offset 	= (s16)((cal_data[4] << 8) + cal_data[5]);
		#endif
		simpliciti_ed_address[0] = cal_data[6];
		simpliciti_ed_address[1] = cal_data[7];
		simpliciti_ed_address[2] = cal_data[8];
		simpliciti_ed_address[3] = cal_data[9];
		// S/W version byte set during calibration?
#ifdef CONFIG_ALTITUDE
		if (cal_data[12] != 0xFF)
		{
			sAlt.altitude_offset = (s16)((cal_data[10] << 8) + cal_data[11]);;
		}
		else
		{
			sAlt.altitude_offset = 0;	
		}
#endif
	}
}

// *************************************************************************************************
// @fn          menu_skip_next
// @brief       skip to next menu item
// @param       line line to skip in
// @return      none
// *************************************************************************************************
void menu_skip_next(line_t line)
{
	if(line==LINE1)
	{
		// Clean up display before activating next menu item
		fptr_lcd_function_line1(LINE1, DISPLAY_LINE_CLEAR);
		
		if(++menu_L1_position>=menu_L1_size)
		{
			menu_L1_position=0;
		}
		
		// Go to next menu entry
		ptrMenu_L1 = menu_L1[menu_L1_position];
			
		// Assign new display function
		fptr_lcd_function_line1 = ptrMenu_L1->display_function;
	}
	else if(line==LINE2)
	{
	// Clean up display before activating next menu item
		fptr_lcd_function_line2(LINE2, DISPLAY_LINE_CLEAR);

		if(++menu_L2_position>=menu_L2_size)
			menu_L2_position=0;
		
		// Go to next menu entry
		ptrMenu_L2 = menu_L2[menu_L2_position];

		// Assign new display function
		fptr_lcd_function_line2 = ptrMenu_L2->display_function;
	}

}