///////////////////////////////////////////////////////////////////////////////
//                                                                            /
// IAR Atmel AVR C/C++ Compiler V4.30F/W32              13/Mar/2008  04:52:01 /
// Copyright 1996-2007 IAR Systems. All rights reserved.                      /
//                                                                            /
//    Source file           =  C:\home\kevin\pub\src\bc100\IAR\statefunc.c    /
//    Command line          =  C:\home\kevin\pub\src\bc100\IAR\statefunc.c    /
//                             --cpu=tiny861 -ms -o C:\home\kevin\pub\src\bc1 /
//                             00\IAR\Release\Obj\ -D NDEBUG -lCN             /
//                             C:\home\kevin\pub\src\bc100\IAR\Release\List\  /
//                             -lB C:\home\kevin\pub\src\bc100\IAR\Release\Li /
//                             st\ --initializers_in_flash -s9                /
//                             --no_cross_call --no_tbaa                      /
//                             -DENABLE_BIT_DEFINITIONS -e -I "C:\Program     /
//                             Files\IAR Systems\Embedded Workbench           /
//                             4.0\avr\INC\" -I "C:\Program Files\IAR         /
//                             Systems\Embedded Workbench 4.0\avr\INC\CLIB\"  /
//                             --eeprom_size 512 --misrac=5-9,11-12,14,16-17, /
//                             19-21,24-26,29-32,34-35,38-39,42-43,46,50,     /
//                             52-54,56-59,61-62,64-65,68-80,83-84,87-91,     /
//                             94-95,98-100,103-110,112-126                   /
//    Enabled MISRA C rules =  5-9,11-12,14,16-17,19-21,24-26,29-32,34-35,    /
//                             38-39,42-43,46,50,52-54,56-59,61-62,64-65,     /
//                             68-80,83-84,87-91,94-95,98-100,103-110,112-126 /
//      Checked             =  5,7-9,11-12,14,17,19-21,24,29-32,34-35,38-39,  /
//                             42,46,50,52-54,56-59,61-62,64,68-69,71-80,     /
//                             83-84,87-89,91,94-95,98,100,104-105,108-109,   /
//                             112-115,118-126                                /
//      Not checked         =  6,16,25-26,43,65,70,90,99,103,106-107,110,     /
//                             116-117                                        /
//    List file             =  C:\home\kevin\pub\src\bc100\IAR\Release\List\s /
//                             tatefunc.s90                                   /
//                                                                            /
//                                                                            /
///////////////////////////////////////////////////////////////////////////////

        NAME statefunc

        RSEG CSTACK:DATA:NOROOT(0)
        RSEG RSTACK:DATA:NOROOT(0)

        EXTERN ?need_segment_init
        EXTERN __eeget8_16
        EXTERN __eeput8_16

        PUBWEAK `?<Segment init: NEAR_Z>`
        PUBLIC BatteryControl
        PUBLIC Discharge
        PUBLIC Doze
        PUBLIC Error
        PUBLIC ErrorFlags
        PUBLIC ErrorState
        PUBLIC Initialize
        PUBLIC JumperCheck
        PUBLIC SetErrorFlag
        PUBLIC `Sleep`
        PUBWEAK _A_ADCSRA
        PUBWEAK _A_CLKPR
        PUBWEAK _A_DDRB
        PUBWEAK _A_MCUCR
        PUBWEAK _A_MCUSR
        PUBWEAK _A_WDTCR
        PUBWEAK __?EEARH
        PUBWEAK __?EEARL
        PUBWEAK __?EECR
        PUBWEAK __?EEDR

        EXTERN OWI_Init
        EXTERN DisableBatteries
        EXTERN SPI_Init
        EXTERN ADC_Init
        EXTERN Time_Init
        EXTERN EnableBattery
        EXTERN ADC_Wait
        EXTERN BatteryStatusRefresh
        EXTERN BatteryDataRefresh
        EXTERN PWM_Stop
        EXTERN PWM_Start
        EXTERN Time_Set
        EXTERN abs
        EXTERN PWM_IncrementDutyCycle
        EXTERN Time_Left
        EXTERN ADCS
        EXTERN BattActive
        EXTERN BattControl
        EXTERN BattData
        EXTERN BattEEPROM
        EXTERN CurrentState

// C:\home\kevin\pub\src\bc100\IAR\statefunc.c
//    1 /* This file has been prepared for Doxygen automatic documentation generation.*/
//    2 /*! \file *********************************************************************
//    3  *
//    4  * \brief
//    5  *      State functions
//    6  *
//    7  *      Contains the functions related to the states defined in menu.h.\n
//    8  *      Also contains related functions, i.e. for checking jumpers, setting
//    9  *      error flags and "dozing".
//   10  *
//   11  *      \note The state function Charge() is in a separate file since it
//   12  *      should easily be changed with regard to battery type.
//   13  *
//   14  * \par Application note:
//   15  *      AVR458: Charging Li-Ion Batteries with BC100 \n
//   16  *      AVR463: Charging NiMH Batteries with BC100
//   17  *
//   18  * \par Documentation
//   19  *      For comprehensive code documentation, supported compilers, compiler 
//   20  *      settings and supported devices see readme.html
//   21  *
//   22  * \author
//   23  *      Atmel Corporation: http://www.atmel.com \n
//   24  *      Support email: avr@atmel.com
//   25  *
//   26  * 
//   27  * $Name$
//   28  * $Revision: 2299 $
//   29  * $RCSfile$
//   30  * $URL: http://svn.norway.atmel.com/AppsAVR8/avr458_Charging_Li-Ion_Batteries_with_BC100/tag/20070904_release_1.0/code/IAR/statefunc.c $
//   31  * $Date: 2007-08-23 12:55:51 +0200 (to, 23 aug 2007) $\n
//   32  ******************************************************************************/
//   33 
//   34 #include <ioavr.h>

        ASEGN ABSOLUTE:DATA:NOROOT,055H
// <unnamed> volatile __io _A_MCUCR
_A_MCUCR:
        DS 1

        ASEGN ABSOLUTE:DATA:NOROOT,054H
// <unnamed> volatile __io _A_MCUSR
_A_MCUSR:
        DS 1

        ASEGN ABSOLUTE:DATA:NOROOT,048H
// <unnamed> volatile __io _A_CLKPR
_A_CLKPR:
        DS 1

        ASEGN ABSOLUTE:DATA:NOROOT,041H
// <unnamed> volatile __io _A_WDTCR
_A_WDTCR:
        DS 1

        ASEGN ABSOLUTE:DATA:NOROOT,037H
// <unnamed> volatile __io _A_DDRB
_A_DDRB:
        DS 1

        ASEGN ABSOLUTE:DATA:NOROOT,026H
// <unnamed> volatile __io _A_ADCSRA
_A_ADCSRA:
        DS 1
//   35 #include <inavr.h>
//   36 #include <stdlib.h>
//   37 
//   38 #include "structs.h"
//   39 #include "enums.h"
//   40 
//   41 #include "ADC.h"
//   42 #include "statefunc.h"
//   43 #include "battery.h"
//   44 #include "charge.h"
//   45 #include "main.h"
//   46 #include "menu.h"
//   47 #include "OWI.h"
//   48 #include "PWM.h"
//   49 #include "time.h"
//   50 #include "USI.h"
//   51 
//   52 
//   53 //******************************************************************************
//   54 // Variables
//   55 //******************************************************************************

        RSEG NEAR_Z:DATA:NOROOT(0)
        REQUIRE `?<Segment init: NEAR_Z>`
//   56 unsigned char ErrorFlags;  //!< \brief Holds error flags.
ErrorFlags:
        DS 1
//   57                            //!< \note See statefunc.h for definitions of flags.
//   58 
//   59 //! \brief Holds the state in which latest error flag was set.
//   60 //! \note See menu.h for definitions of states.
//   61 unsigned char ErrorState;
ErrorState:
        DS 1
//   62 
//   63 
//   64 //******************************************************************************
//   65 // Functions
//   66 //******************************************************************************
//   67 /*! \brief Initialization
//   68  *
//   69  * - Sets the system clock prescaler to 1 (run at 8 MHz)
//   70  * - Initializes the one-wire interface
//   71  * - Clears on-chip EEPROM
//   72  * - Sets battery enable pins as outputs, then disables batteries
//   73  * - Initializes SPI according to \ref SPIMODE
//   74  * - Initializes ADC
//   75  * - Initializes timers
//   76  * - Reads battery data from both battery inputs (via ADC)
//   77  * - Disables batteries again
//   78  * - Sets battery A as the current one (\ref BattActive = 0)
//   79  * - Clears ErrorFlags
//   80  *
//   81  * \param inp Not used.
//   82  *
//   83  * \retval ST_BATCON Next state in the sequence.
//   84  */

        RSEG CODE:CODE:NOROOT(1)
//   85 unsigned char Initialize(unsigned char inp)
Initialize:
//   86 {
        ST      -Y, R24
//   87 	unsigned char i, page;
//   88 
//   89 	// Disable interrupts while setting prescaler.
//   90 	__disable_interrupt();
        CLI
//   91 	
//   92 	CLKPR = (1<<CLKPCE);          // Enable CLKPS bit modification.
        LDI     R16, 128
        OUT     0x28, R16
//   93 	CLKPR = 0;                    // Set prescaler 1 => 8 MHz clock frequency.
        LDI     R16, 0
        OUT     0x28, R16
//   94 	
//   95 	// Init 1-Wire(R) interface.
//   96 	OWI_Init(OWIBUS);
        LDI     R16, 1
        RCALL   OWI_Init
//   97 	
//   98 	// Clear on-chip EEPROM.
//   99 	for (page = 0; page < 4; page++)	{
        LDI     R20, LOW(BattEEPROM)
        LDI     R21, (BattEEPROM) >> 8
        LDI     R17, 128
//  100 		for (i = 0; i < 32; i++) {
//  101 			BattEEPROM[page][i] = 0;
??Initialize_0:
        LDI     R16, 0
        RCALL   __eeput8_16
//  102 		}
        SUBI    R20, 255
        SBCI    R21, 255
//  103 	}
        DEC     R17
        BRNE    ??Initialize_0
//  104 
//  105 	DDRB = (1<<PB4) | (1<<PB5);   // Set battery enable pins as outputs.
        LDI     R16, 48
        OUT     0x17, R16
//  106 	DisableBatteries();
        RCALL   DisableBatteries
//  107 	SPI_Init(SPIMODE);
        LDI     R16, 0
        RCALL   SPI_Init
//  108 	ADC_Init();
        RCALL   ADC_Init
//  109 	Time_Init();
        RCALL   Time_Init
//  110 
//  111 	// Attempt to get ADC-readings (also gets RID-data) from both batteries.
//  112 	for (i = 0; i < 2; i++)	{
        LDI     R24, 0
//  113 		EnableBattery(i);
??Initialize_1:
        MOV     R16, R24
        RCALL   EnableBattery
//  114 		ADC_Wait();
        RCALL   ADC_Wait
//  115 		BatteryStatusRefresh();
        RCALL   BatteryStatusRefresh
//  116 	}
        INC     R24
        CPI     R24, 2
        BRCS    ??Initialize_1
//  117     
//  118 	DisableBatteries();
        RCALL   DisableBatteries
//  119 	
//  120 	BattActive = 0;               // We have to start somewhere..
        LDI     R16, 0
        STS     BattActive, R16
//  121 	ErrorFlags = 0;
        STS     ErrorFlags, R16
//  122 	
//  123 	// Init complete! Go to ST_BATCON next.
//  124 	return(ST_BATCON);
        LDI     R16, 20
        LD      R24, Y+
        RET
        REQUIRE _A_CLKPR
        REQUIRE _A_DDRB
//  125 }
//  126 
//  127 
//  128 /*! \brief Tests jumper settings and batteries, starts charging if necessary.
//  129  *
//  130  * First, JumperCheck() is called. If successful, the function checks if any
//  131  * valid batteries are connected and attempts to charge these, if necessary.\n
//  132  * If no charging is necessary, the charger goes to ST_SLEEP next.\n
//  133  * ST_ERROR is next if either JumperCheck() fails or there are no valid
//  134  * batteries. In this last case, the error is also flagged.
//  135  *
//  136  * \param inp Not used.
//  137  *
//  138  * \retval ST_ERROR Next state if either the jumper check failed, or there are
//  139  * no valid batteries.
//  140  * \retval ST_PREQUAL Next state if a battery is found to enabled and not fully
//  141  * charged.
//  142  * \retval ST_SLEEP Next state if battery/batteries are enabled and fully
//  143  * charged.
//  144  */

        RSEG CODE:CODE:NOROOT(1)
//  145 unsigned char BatteryControl(unsigned char inp)
BatteryControl:
//  146 {
        ST      -Y, R27
        ST      -Y, R26
        ST      -Y, R25
        ST      -Y, R24
//  147 	unsigned char i;
//  148 	
//  149 	// Make sure ADC inputs are configured properly! (Will disables batteries.)
//  150 	if (!JumperCheck()) {
        RCALL   JumperCheck
        TST     R16
        BRNE    ??BatteryControl_0
//  151 		return(ST_ERROR);           // Error. Exit before damage is done!
??BatteryControl_1:
        LDI     R16, 90
        RJMP    ??BatteryControl_2
//  152 	}
//  153 	
//  154 	// If neither battery is valid, flag error and go to error state
//  155 	if ((!BattControl[0].Enabled) && (!BattControl[1].Enabled)) {
??BatteryControl_0:
        LDI     R24, LOW(BattControl)
        LDI     R25, (BattControl) >> 8
        MOVW    R21:R20, R25:R24
        RCALL   __eeget8_16
        ANDI    R16, 0x01
        BRNE    ??BatteryControl_3
        MOVW    R21:R20, R25:R24
        SUBI    R20, 255
        SBCI    R21, 255
        RCALL   __eeget8_16
        ANDI    R16, 0x01
        BRNE    ??BatteryControl_3
//  156 		SetErrorFlag(ERR_NO_BATTERIES_ENABLED);
        LDI     R30, LOW(ErrorFlags)
        LDI     R31, (ErrorFlags) >> 8
        LD      R16, Z
        ORI     R16, 0x02
        ST      Z, R16
        LDS     R16, CurrentState
        STD     Z+1, R16
//  157 		
//  158 		return(ST_ERROR);
        RJMP    ??BatteryControl_1
//  159 	}
//  160 
//  161 	// Get ADC-readings, try to read EPROM, and start prequalification
//  162 	// of any uncharged battery.
//  163 	for (i = 0; i < 2; i++) {
??BatteryControl_3:
        LDI     R26, 0
//  164 		if (BattControl[i].Enabled) {      
??BatteryControl_4:
        LDI     R27, 0
        MOVW    R21:R20, R25:R24
        ADD     R20, R26
        ADC     R21, R27
        RCALL   __eeget8_16
        ANDI    R16, 0x01
        BREQ    ??BatteryControl_5
//  165 			EnableBattery(i);
        MOV     R16, R26
        RCALL   EnableBattery
//  166 			ADC_Wait();
        RCALL   ADC_Wait
//  167 
//  168 			if (BatteryStatusRefresh()) {
        RCALL   BatteryStatusRefresh
        TST     R16
        BREQ    ??BatteryControl_5
//  169 				if (!BattData.Charged) {
        LDS     R16, BattData
        SBRC    R16, 1
        RJMP    ??BatteryControl_5
//  170 					BatteryDataRefresh();
        RCALL   BatteryDataRefresh
//  171 
//  172 					return(ST_PREQUAL);       
        LDI     R16, 30
        RJMP    ??BatteryControl_2
//  173 				}
//  174 			}
//  175 		}
//  176 	}
??BatteryControl_5:
        INC     R26
        CPI     R26, 2
        BRCS    ??BatteryControl_4
//  177 
//  178 	// If we end up here, one or two batteries are found and fully charged.
//  179 	// Disconnect, so we don't drain them, and go to sleep.
//  180 	DisableBatteries();
        RCALL   DisableBatteries
//  181 
//  182 	return(ST_SLEEP);
        LDI     R16, 40
??BatteryControl_2:
        LD      R24, Y+
        LD      R25, Y+
        LD      R26, Y+
        LD      R27, Y+
        RET
//  183 }
//  184 
//  185 
//  186 /*! \brief Start running on batteries
//  187  *
//  188  * \todo Run on batteries, if battery voltage high enough.
//  189  * \todo Jump here when mains voltage drops below threshold
//  190  *
//  191  */

        RSEG CODE:CODE:NOROOT(1)
//  192 unsigned char Discharge(unsigned char inp)
Discharge:
//  193 {
//  194 	return(ST_BATCON);  // Supply voltage restored, start charging
        LDI     R16, 20
        RET
//  195 }
//  196 
//  197 
//  198 /*! \brief Sleeps until either battery needs charging
//  199  *
//  200  * Calls Doze(), then refreshes the status for both batteries on wakeup. If
//  201  * connected batteries are both charged, the function will loop. If not, it's
//  202  * back to ST_BATCON.
//  203  *
//  204  * \param inp Not used.
//  205  *
//  206  * \retval ST_BATCON Next state if a connected battery isn't fully charged.
//  207  */

        RSEG CODE:CODE:NOROOT(1)
//  208 unsigned char Sleep(unsigned char inp)
`Sleep`:
//  209 {
//  210 	unsigned char i;
//  211 
//  212 	do {
//  213 		Doze();               // Take a nap (~8 seconds).
        RCALL   ADC_Wait
??Sleep_0:
        RJMP    ??Sleep_0
        REQUIRE _A_MCUCR
        REQUIRE _A_MCUSR
        REQUIRE _A_WDTCR
        REQUIRE _A_ADCSRA
//  214 
//  215 		// If any batteries need charging, go to ST_BATCON.
//  216 		// Otherwise, keep sleeping.
//  217 		for (i = 0; i < 2; i++) {
//  218 			EnableBattery(i);
//  219 			ADC_Wait();
//  220 			if ((BatteryStatusRefresh()) && (!BattData.Charged)) {
//  221 				return(ST_BATCON);
//  222 			}
//  223 		}
//  224 		
//  225 		DisableBatteries();  // Disable both batteries before Doze()!
//  226 	} while (TRUE);
//  227 }
//  228 
//  229 
//  230 /*! \brief Doze off for approx. 8 seconds (Vcc = 5 V)
//  231  *
//  232  * Waits for ADC-cycles to complete, disables the ADC, then sleeps for
//  233  * approx. 8 seconds (Vcc = 5 V) using the watchdog timer.
//  234  * On wakeup, ADC is re-enabled.
//  235  */

        RSEG CODE:CODE:NOROOT(1)
//  236 void Doze(void)
Doze:
//  237 {
//  238 	// Wait for this ADC cycle to complete, then halt after the next one.
//  239 	ADC_Wait();
        RCALL   ADC_Wait
//  240 	ADCS.Halt = TRUE;
//  241 	ADCS.Flag = FALSE;
//  242 	
//  243 	do {
//  244 	} while (ADCS.Flag == FALSE);    
??Doze_0:
        RJMP    ??Doze_0
        REQUIRE _A_MCUCR
        REQUIRE _A_MCUSR
        REQUIRE _A_WDTCR
        REQUIRE _A_ADCSRA
//  245 	
//  246 	WDTCR = (1<<WDP3)|(1<<WDP0);            // 8.0 seconds at 5 volts VCC.
//  247 	WDTCR |= (1<<WDIF)|(1<<WDIE)|(1<<WDE);  // Clear flag and enable watchdog.
//  248 	MCUCR |= (1<<SE) | (1<<SM1)|(1<<SM0);   // Sleep enable, mode = standby.
//  249 	__sleep();                              // Go to sleep, wake up by WDT.
//  250 	
//  251 	__watchdog_reset();                     // Clear watchdog reset flag.
//  252 	MCUSR &= ~(1<<WDRF);          
//  253 	WDTCR |= (1<<WDCE)|(1<<WDE);            // Watchdog change enable.
//  254 	WDTCR = 0;                              // Turn off watchdog.
//  255 	
//  256 	ADCS.Halt = FALSE;                      // Enable consecutive runs of ADC.
//  257 	ADCSRA |= (1<<ADEN)|(1<<ADSC);          // Enable ADC & start conversion.
//  258 	
//  259 	// Wait for this cycle to complete.
//  260 	ADC_Wait();                             
//  261 }
//  262 
//  263 
//  264 /*! \brief Handles errors
//  265  *
//  266  * Stops PWM output and disables batteries. The function then goes into a loop
//  267  * that starts with a call to Doze(), then attempts to handle each error. The
//  268  * loop will reiterate until all flags are cleared.\n
//  269  * The charger will reinitialize after this.
//  270  *
//  271  * Jumper errors are handled by clearing the flag, then calling JumperCheck().
//  272  * If unsuccessful, the error flag will now have been set again.\n
//  273  *
//  274  * If there are no valid batteries, the loop will simply reiterate until a
//  275  * valid battery is found. The error flag will then be cleared.\n
//  276  *
//  277  * In the case of PWM controller or battery temperature errors, the error
//  278  * flag is simply cleared. This is because the problem may have gone away during
//  279  * Doze(), or after reinitializing.\n
//  280  *
//  281  * If a battery is exhausted, we clear its exhausted-flag in \ref BattData,
//  282  * and change batteries before clearing the error flag.
//  283  *
//  284  * \param inp Not used.
//  285  */

        RSEG CODE:CODE:NOROOT(1)
//  286 unsigned char Error(unsigned char inp)
Error:
//  287 	{
//  288 	unsigned char i;
//  289 	
//  290 	PWM_Stop();           // Stop charging.
        RCALL   PWM_Stop
//  291 	DisableBatteries();   // Disable all loads.
        RCALL   DisableBatteries
//  292 	
//  293 	do {
//  294 		Doze();           // Take a nap.
        RCALL   ADC_Wait
??Error_0:
        RJMP    ??Error_0
        REQUIRE _A_MCUCR
        REQUIRE _A_MCUSR
        REQUIRE _A_WDTCR
        REQUIRE _A_ADCSRA
//  295 
//  296 		// For each bit in ErrorFlags, starting with LSB, handle
//  297 		// associated error, if the flag is set.
//  298 		for (i = 0x01; i!=0; i<<=1) {
//  299 			if(i & ErrorFlags) {
//  300 				switch (i) {
//  301 				
//  302 				case  ERR_JUMPER_MISMATCH:
//  303 					// Clear flag & recheck.
//  304 					ErrorFlags &= ~i;
//  305 					JumperCheck();
//  306 				break;
//  307 
//  308 
//  309 				case  ERR_NO_BATTERIES_ENABLED:
//  310 					// Clear if any battery gets enabled.
//  311 					if ((BattControl[0].Enabled) || (BattControl[1].Enabled)) {
//  312 							ErrorFlags &= ~i;
//  313 					}
//  314 				break;
//  315 
//  316 
//  317 				case  ERR_PWM_CONTROL:
//  318 					// Clear flag.
//  319 					ErrorFlags &= ~i;
//  320 				break;
//  321 
//  322 
//  323 				case  ERR_BATTERY_TEMPERATURE:
//  324 					// Clear flag.
//  325 					ErrorFlags &= ~i;
//  326 				break;
//  327 
//  328 
//  329 				case  ERR_BATTERY_EXHAUSTED:
//  330 					// Try the other battery.
//  331 					BattData.Exhausted = FALSE;
//  332 					BattActive = (BattActive + 1) % 2;
//  333 					ErrorFlags &= ~i;
//  334 				break;
//  335 
//  336 					
//  337 				default:
//  338 				break;
//  339 				}
//  340 			}
//  341 		}
//  342 	} while (ErrorFlags);
//  343 
//  344 	return(ST_INIT);
//  345 }
//  346 
//  347 
//  348 /*! \brief Sets the specified error-flag and saves the current state
//  349  *
//  350  * Updates \ref ErrorFlags and \ref ErrorState.
//  351  *
//  352  * \note Error flags are specified in statefunc.h.
//  353  *
//  354  * \param Flag Specifies what error to flag.
//  355  */

        RSEG CODE:CODE:NOROOT(1)
//  356 void SetErrorFlag(unsigned char Flag)
SetErrorFlag:
//  357 {
//  358 	ErrorFlags |= Flag;
        LDI     R30, LOW(ErrorFlags)
        LDI     R31, (ErrorFlags) >> 8
        LD      R17, Z
        OR      R17, R16
        ST      Z, R17
//  359 	ErrorState = CurrentState;
        LDS     R16, CurrentState
        STD     Z+1, R16
//  360 }
        RET
//  361 
//  362 
//  363 /*! \brief Checks on-board jumpers.
//  364  *
//  365  * Checks on-board jumpers by disconnecting all loads, engaging the PWM and
//  366  * increasing the duty cycle until conditioned output voltage equals conditioned
//  367  * input voltage. At low PWM duty and no load buck output should be zero and,
//  368  * when increasing PWM duty, should quickly jump to steady state output roughly
//  369  * equal to input voltage. Will disable and leave disabled all batteries.
//  370  *
//  371  * \retval FALSE If jumper or load mismatch.
//  372  * \retval TRUE If everything OK.
//  373  */

        RSEG CODE:CODE:NOROOT(1)
//  374 unsigned char JumperCheck(void)
JumperCheck:
//  375 {
        ST      -Y, R27
        ST      -Y, R26
//  376 	 DisableBatteries();       // Disconnect, or loads may be destroyed!
        RCALL   DisableBatteries
//  377 	 
//  378 	 PWM_Start();              // Start PWM (controls the buck charger).
        RCALL   PWM_Start
//  379 	
//  380 	 // Use general timer: shouldn't take longer than (6 x 255) / 2500 ~= 0.62s.
//  381 	 Time_Set(TIMER_GEN,0,1,0);
        LDI     R20, 0
        LDI     R17, 1
        LDI     R18, 0
        LDI     R19, 0
        LDI     R16, 2
        RCALL   Time_Set
        LDI     R26, LOW(ADCS)
        LDI     R27, (ADCS) >> 8
        RJMP    ??JumperCheck_0
//  382 	
//  383 	do {
//  384 		// If the PWM output voltage saturates the ADC, stop PWM output and
//  385 		// report a failure.
//  386 		if (ADCS.rawVBAT == 1023) {
//  387 			PWM_Stop();
//  388 			return(FALSE);
//  389 		}
//  390 
//  391 		// If the absolute difference between measured (VIN - VBAT) and the
//  392 		// typical value are below our set maximum, everything is OK.
//  393 		if (abs((signed int)(ADCS.VIN - VIN_VBAT_DIFF_TYP - ADCS.VBAT)) <
//  394 		                     VIN_VBAT_DIFF_MAX ) {
//  395 				 
//  396 			PWM_Stop();
//  397 			return(TRUE);
//  398 		}
//  399 
//  400 		// Charge current is too high -> check load and jumper J405 and J406.
//  401 		if (abs(ADCS.IBAT) > 100) {
??JumperCheck_1:
        ADIW    R27:R26, 12
        LD      R16, X+
        LD      R17, X
        SBIW    R27:R26, 13
        RCALL   abs
        CPI     R16, 101
        SBCI    R17, 0
        BRGE    ??JumperCheck_2
//  402 			PWM_Stop();
//  403 			return(FALSE);
//  404 		}
//  405 
//  406 		// If the PWM output can't be increased high enough -> check jumpers
//  407 		// J400-J404, J407 and J408.
//  408 		if (!PWM_IncrementDutyCycle()) {
        RCALL   PWM_IncrementDutyCycle
        TST     R16
        BREQ    ??JumperCheck_2
//  409 			PWM_Stop();
//  410 			return(FALSE);
//  411 		}
//  412 		
//  413       // Wait for ADC conversions to complete
//  414 		ADC_Wait();
        RCALL   ADC_Wait
//  415 	} while (Time_Left(TIMER_GEN));
        LDI     R16, 2
        RCALL   Time_Left
        TST     R16
        BREQ    ??JumperCheck_2
??JumperCheck_0:
        ADIW    R27:R26, 6
        LD      R16, X+
        LD      R17, X
        SBIW    R27:R26, 7
        CPI     R16, 255
        SBCI    R17, 3
        BRNE    ??JumperCheck_3
??JumperCheck_2:
        RCALL   PWM_Stop
        LDI     R16, 0
        RJMP    ??JumperCheck_4
??JumperCheck_3:
        ADIW    R27:R26, 8
        LD      R16, X+
        LD      R17, X+
        SUBI    R16, 88
        SBCI    R17, 2
        LD      R18, X+
        LD      R19, X
        SBIW    R27:R26, 11
        SUB     R16, R18
        SBC     R17, R19
        RCALL   abs
        CPI     R16, 244
        SBCI    R17, 1
        BRGE    ??JumperCheck_1
        RCALL   PWM_Stop
        LDI     R16, 1
??JumperCheck_4:
        LD      R26, Y+
        LD      R27, Y+
        RET
//  416 	
//  417 
//  418 	// If we end up here, the measurements took too long.
//  419 	PWM_Stop();
//  420 	return(FALSE);
//  421 }

        ASEGN ABSOLUTE:DATA:NOROOT,01cH
__?EECR:

        ASEGN ABSOLUTE:DATA:NOROOT,01dH
__?EEDR:

        ASEGN ABSOLUTE:DATA:NOROOT,01eH
__?EEARL:

        ASEGN ABSOLUTE:DATA:NOROOT,01fH
__?EEARH:

        RSEG INITTAB:CODE:NOROOT(0)
`?<Segment init: NEAR_Z>`:
        DW      SFE(NEAR_Z) - SFB(NEAR_Z)
        DW      SFB(NEAR_Z)
        DW      0
        REQUIRE ?need_segment_init

        END
// 
//   6 bytes in segment ABSOLUTE
// 358 bytes in segment CODE
//   6 bytes in segment INITTAB
//   2 bytes in segment NEAR_Z
// 
// 358 bytes of CODE memory (+ 6 bytes shared)
//   2 bytes of DATA memory (+ 6 bytes shared)
//
//Errors: none
//Warnings: none