path: root/globals.h

#ifndef GLOBALS_H_
#define GLOBALS_H_

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include <stdbool.h>

#define DEBUG_ON - uncomment this to have debug messages

#ifdef DEBUG_ON
#define g_print_debug(...) g_print(__VA_ARGS__)
#else
#define g_print_debug(...) {}
#endif


/* error codes */
#define OK 0
#define Unrecognized 1
#define SyntaxError 2
#define OutOfRange 3
#define UnknownUnits 4
#define Overload_Detected 5
#define duty_cycle_upper_limit 6
#define AB_Mode_Error 7
#define Valid_For_RS232_TELNET_Only 8
#define PW_Exceeds_Period 9
#define Delay_Exceeds_95Period 10
#define Double_Separation_Too_Large 11
#define freq_lower_limit 12
#define freq_upper_limit 13
#define pw_lower_limit 14
#define pw_upper_limit 15
#define delay_upper_limit 16
#define delay_lower_limit 17
#define amplitude_lower_limit 18
#define amplitude_upper_limit 19
#define offset_lower_limit 20
#define offset_upper_limit 21
#define ampl_plus_os_lower_limit 22
#define ampl_plus_os_upper_limit 23
#define DutyTriggerError 24
#define Double_Separation_Too_Small 25
#define queue_overflow 26
#define query_error_interrupted 27
#define IllegalParameter 28
#define Negative_Not_Allowed 29
#define query_error_unterminated 30
#define Overtemp_Detected 31
#define Overvolt_Detected 32
#define Device_Specific_Aux_Error_Detected 33
#define InvalidChannel 34
#define AsyncModeDisabled 36
#define CalibrationPercentError 37
#define NeedNonZeroAmpl 38
#define amplitude_confined_values 40
#define HardwareError 41
#define CalibrationZeroError 42
#define CalibrationClosenessError 44
#define CalibrationTimingProblem 45
#define CalibrationRangeError 46
#define CalibrationPolarityError 47
#define Coupled_OS_Ampl_Error 48
#define PW_Distort_Error 49
#define burst_duty_error 50
#define min_burst_period_error 51
#define min_burst_gap_error 52
#define max_burst_gap_error 53
#define max_burst_count_error 54
#define Burst_Exceeds_Period 55
#define password_change_error 56
#define min_rise_time_error 57
#define max_rise_time_error 58
#define min_soft_current_limit_error 59
#define max_soft_current_limit_error 60
#define Average_Amplitude_Too_High 61
#define Route_Range_Error 64
#define Soft_Limit_Exceeded 65
#define min_slew_error 67
#define max_slew_error 68
#define min_load_type_error 69
#define max_load_type_error 70
#define peak_power_limit 71
#define average_power_limit 72
#define SelfCalError 73
#define NetworkNotFound 74
#define ThisShouldntHappen 75
#define Startup_Not_Finished 76
#define DelayRangeError 77
#define ExternalModeDelayError 78
#define PRF_limited_by_offset 79
#define obsolete_feature 80
#define zero_equiv_ampl_too_large 81
#define GPIB_missing 82
#define rise_time_confined_values 83
#define zero_equiv_ampl_negative 84
#define amplitude_gap 85
#define CalibrationMinMaxError_ampl 86
#define CalibrationMinMaxError_pw 87
#define CalibrationMinMaxError_os 88
#define CalibrationMinMaxError_freq 89
#define CalibrationMinMaxError_delay 90
#define CalibrationMinMaxError_burst 91
#define CalibrationMinMaxError_rise 92
#define CalibrationMinMaxError_slew 93
#define Dead_Time_Error 94
#define Cant_Do_Burst_and_Double 95
#define Between_0_and_10_Volts 96

#define YES     1
#define NO      0

#define max_commands_in_input 12
#define max_output_length 512
#define max_channels 2

/* DEFINE: misc hardware constraints, based on Avtech hardware */
#define num_out_SRs 4		/* 4 output shift registers */
#define max_channels 2		/* maximum number of instrument channels */
#define max_stored_settings 4	/* how many user settings can be stored in flash, per channel */

#define ampl_ranges 5
#define os_ranges 5		/* must be equal to ampl_ranges now */
#define ampl_polarities 2
#define os_polarities 1
#define old_range_size_ten 10

#define timing_ranges 8
#define timing_polarities 1

#define load_type_ranges 1
#define load_type_polarities 1

#define pwl_ampl_values 0
#define pwl_os_values 1
#define pwl_pw_values 3
#define pwl_delay_values 4
#define pwl_period_values 5
#define pwl_burst_values 6
#define pwl_rise_time_values 7
#define pwl_slew_values 9
#define pwl_distort_values 10

#define dac_max 8191

#define All_Programmed 2
#define Being_Programmed 1
#define Not_Programmed 0

#define to_Advance 0
#define to_Delay 1
#define pw_in_out 0
#define pw_normal 1
#define pw_ew_ext 2
#define double_on 1
#define double_off 0
#define hold_width 0
#define hold_duty 1
#define output_off 0
#define output_on 1
#define source_internal 0
#define source_external 1
#define source_manual 2
#define source_hold 3
#define source_immediate 4
#define source_external2 5

#define pulse_mode_on 0
#define sin_mode_on 1
#define tri_mode_on 2
#define squ_mode_on 4
#define amp_mode_on 8
#define dc_mode_on 16

#define gate_sync 0
#define gate_async 1
#define gate_low 0
#define gate_high 1

#define amp_mode_normal 0
#define amp_mode_ea 1
#define amp_mode_amplify 2

#define os_mode_normal 0
#define os_mode_eo 1
#define logic_ttl 0
#define logic_ecl 1

#define to_display 0
#define to_computer 1

#define LOCS_ctrl 0
#define LWLS_ctrl 1
#define REMS_ctrl 2
#define RWLS_ctrl 3
#define RS232_ctrl 4
#define TELNET_ctrl 5
#define WEB_ctrl 6

#define ROUTE_PRIMARY 0
#define ROUTE_SECONDARY 1

#define rs232_parity_none 0	// no longer used
#define rs232_parity_odd 1	// no longer used
#define rs232_parity_even 2	// no longer used

#define smallest_allowed_number 1.0e-18
#define zero_equiv_timing 	1e-10
#define max_v_dymanic_range 	1e6

#define max_attens 8

/* general formatting */
#define remote_digits_after_decimal 4   /* how many digits are returned after decimal by query commands */


// self-cal configs
#define NOT_ENABLE_COUNT 0x01
#define ENABLE_COUNT 0x00

#define NOT_LOAD_BUFFERS_CLK 0x00
#define LOAD_BUFFERS_CLK 0x02

#define NOT_CLR_COUNTERS 0x04
#define CLR_COUNTERS 0x00

#define MEAS_PW 0x08
#define MEAS_PRF 0x00

#define MEAS_CH1 0x00
#define MEAS_CH2 0x10

#define COUNTER_BYTE_0 0x00
#define COUNTER_BYTE_1 0x20
#define COUNTER_BYTE_2 0x40
#define COUNTER_BYTE_3 0x60


// hardware default values
#define DEFAULT_OUTPUT_ON_DELAY 0.8	// needs at least 800 ms, due to soft-on circuit
#define SELF_CAL_REF_FREQ	1e7	// 10 MHz
#define SELF_CAL_MIN_COUNT	400	// 1 in 400

// menu stuff
#define Main_Menu_On 0
#define Submenu_On 1

#define Submenu1_freq 0
#define Submenu1_delay 100
#define Submenu1_pw 200
#define Submenu1_amp 300
#define Submenu1_offset 400
#define Submenu1_mon 500
#define Submenu1_zout 600
#define Submenu1_loadtype 700
#define Submenu1_output_state 800
#define Submenu1_setup 900
#define Submenu1_rem_loc 1000
#define Submenu1_invert 1100
#define Submenu1_gate 1200
#define Submenu1_memory 1300
#define Submenu2_save 1400
#define Submenu2_load 1500
#define Submenu2_rs232 1600
#define Submenu2_rs232_baud 1700
#define Submenu2_rs232_databits 1800	// no longer used
#define Submenu2_rs232_parity 1900	// no longer used
#define Submenu2_rs232_stopbits 2000
#define Submenu2_rs232_hardhand 2100
#define Submenu2_rs232_echo 2200
#define Submenu1_logic_level 2300
#define Submenu1_route_primary 2400
#define Submenu1_burst_count 2500
#define Submenu1_burst_time 2600
#define Submenu1_func 2700
#define Submenu1_rise_time 2800
#define Submenu2_gpib_address 2900
#define Submenu1_soft_current_limit 3000
#define Submenu1_route_secondary 3200
#define Submenu1_slew 3300
#define Submenu1_avrq 3400


// must be equal!
#define Submenu_maximum_entries 10
#define max_fixed_ampl_points 10

long sec_timer (void);
unsigned long long ms_timer (void);


#define max_gpib_input_length 512

typedef struct {
	int parallel_DAC_reg[8];
	long shift_reg_out[num_out_SRs];
	long last_relay_driver_settings[4];
	int oper_enable_register;       /* for stat:enable command */
	int ques_enable_register;       /* for stat:enable command */
	int avrq_reg;
	int last_rise_time_relay_setting;
	char gpib_input_buffer[max_gpib_input_length];
	gchar *pending_output_message;
} HWregStruct;


typedef struct {
	int Type_Of_Menu;
	gboolean Error_Screen;
	gboolean Nonstd_Display;
	int Selected_Submenu;
} MenuStatusStruct;


typedef struct {
	int update_amp;
	int update_os;
	int update_zout;
	int update_load;
} ChangeStruct;


typedef struct {
	int channel;
	int cal_type;
	int count;
	int error;
	float max_change;
	float avg_change;
	int total_errors;
	float total_max_change;
	GString *response;
} CalStruct;


typedef struct {
	float frequency;                /* the global frequency variable */
	float delay;                    /* the global delay variable */
	float pw;                               /* the global pulse width variable */
	float amplitude;                /* peak-to-peak amplitude */
	float offset;                   /* offset */

	float offset_null;      	/* add to offset to null, if required */
	/* not part of sav/rcl, generated by amplitude routines */

	float Curr_Mon_value;           /* current monitor reading */
	float displayed_mon_val;        /* used to determine when LCD update is required */
	int Curr_Mon_offset;            /* current monitor ADC offset */

	int zout;                       /* Zout in ohms, integer */
	int hold_setting;               /* pw or duty cycle hold when prf changed */
	int double_pulse;               /* 1=on, 0=off */
	int pw_ctrl_mode;               /* a/b mode */
	int func_mode;                  /* dc or pulse */
	int inverted;                   /* noninverted or inverted */
	int output_state;               /* on or off */
	int gate_type;                  /* lo=sync, hi=async */
	int trigger_source;             /* int, ext, or manual */
	int amp_mode;                   /* normal amplitude control or EA */
	int gate_level;                 /* lo or hi */
	float load_type;                /* normally 50 or 10000 ohms, for duty cycle limit control */
	int test_delay_mode;    	/* special test mode */
	int logic_level;                /* ecl or ttl */
	int route_primary;              /* channel number that is active */
	int route_secondary;            /* channel number that is active */
	int os_mode;                    /* normal offset control or EO */
	int burst_count;                /* number of pulses per burst */
	float burst_time;               /* time between falling edge and next rising edge */
	float rise_time;                /* time between falling edge and next rising edge */
	float soft_current_limit;       /* adjustable protection trip-point */
	float slew;                     /* slew rate */

} ChannelStruct;


#pragma pack(push)  /* push current alignment to stack */
#pragma pack(1)
typedef struct {

	char flash_start;		/* 0 - just a handle */
	char turn_on_dly;		/* 1 */
	char logic_level_enabled;	/* 2 */
	char ChanKey_logic_level;	/* 3 */

	char model_num_old[32];		/* 4 */
	char serial_num[16];	  	/* 36 */

	short fully_programmed;		/* 52 */
	short gpib_address;		/* 54 */

	short telnet_session_timeout;	/* 56 - timeout in seconds */

	char unusedx;			/* 58 */
	short spare2;			/* 59 */
	char ChanKey_route;		/* 61 */
	char on_off_used;		/* 62 */
	char model_num[64];		/* 63 */

	char pcb116c_mon;		/* 127 */

	char ampl_ranges_for_ch2_only;	/* 128 - AVR-EB7-B */

	char warn_even_if_output_off;	/* 129 */

	int baud;                       /* 130 */
	char parity;			// no longer used
	char stopbits;			// no longer used
	char databits;			// no longer used
	char hardhand;
	char echo;			// no longer used

	char spare1[23];		/* 139 */

	short copy_max_channels;	/* 162 - copy of max_channels macro */

	short telnet_logon_timeout;	/* 164 - timeout in seconds */

	short spare6;			/* 166 */
	float output_on_delay;		/* 168 */

	short channels;			/* 172 */
	char ChanKey_frequency;		/* 174 */
	char ChanKey_delay;		/* 175 */
	char ChanKey_pw;		/* 176 */
	char ChanKey_amplitude;		/* 177 */
	char ChanKey_offset;		/* 178 */
	char ChanKey_Curr_Mon_value;	/* 179 */
	char ChanKey_Curr_Mon_offset;	/* 180 */
	char ChanKey_zout;		/* 181 */
	char ChanKey_hold_setting;	/* 182 */
	char ChanKey_double_pulse;	/* 183 */
	char ChanKey_unused; 		/* 184 */
	char ChanKey_func_mode;		/* 185 */
	char ChanKey_inverted;		/* 186 */
	char ChanKey_output_state;	/* 187 */
	char ChanKey_gate_type;		/* 188 */
	char ChanKey_trigger_source;	/* 189 */
	char ChanKey_amp_mode;		/* 190 */
	char ChanKey_gate_level;	/* 191 */
	char ChanKey_load_type;		/* 192 */
	char ChanKey_test_delay_mode;	/* 193 */


	char obs_unused[26];		/* 194 - unused */

	char sync_only;			/* 220 */

	char ChanKey_os_mode;		/* 221 */

	char switchable_backlight;	/* 222 */

	char ChanKey_Burst_Count;	/* 223 */

	char ChanKey_Burst_Time;	/* 224 */

	char vxi_enabled;		/* 225 */

	short web_session_timeout;	/* 226 - timeout in seconds */

	char ChanKey_rise_time;		/* 228 */
	char ChanKey_current_limit;	/* 229 */
	char enable_avrq_extra_ampls;	/* 230 - use CH2 for IBIAS, */
	/* CH3 for VCC1 */
	/* CH4 for VCC2 */
	/* CH5 for Logic Level */
	char ChanKey_slew;		/* 231 */
	short self_cal_interval;	/* 232 */
	short self_cal_startups;	/* 234 */
	short self_cal_pause;   	/* 236 */
	short self_cal_typical_time_min;	/* 238 */
	short self_cal_typical_time_sec;	/* 240 */
	char self_cal;			/* 242 */

	char prf_limiter;		/* 243 */

	float self_cal_ref_freq;	/* 244 */
	short self_cal_min_count;	/* 248 */

	char spare_padding[6];		/* 250 - padding between common and per-channel sections of the */
	/* flash eeprom. Adjust size if variables added to common section, */
	/* so that per-channel section starts at 256 */

	/* [chan][range 0-4][polarity][interpolation point 0-9] */
	short ampl_dacval[max_channels][ampl_ranges][ampl_polarities][old_range_size_ten];
	float ampl_pwl[max_channels][ampl_ranges][ampl_polarities][old_range_size_ten];

	float rcl_frequency[max_channels][max_stored_settings];
	float rcl_delay[max_channels][max_stored_settings];
	float rcl_pw[max_channels][max_stored_settings];
	float rcl_amplitude[max_channels][max_stored_settings];
	float rcl_offset[max_channels][max_stored_settings];
	short rcl_misc[max_channels][max_stored_settings];	/* another misc is stored below */
	short rcl_unused[max_stored_settings];

	float mon_vi_ratio[max_channels][5][2];	/* addr 1640 */

	float min_ampl[max_channels];		/* addr 1720 */
	float max_ampl[max_channels];		/* addr 1728 */
	float min_offset[max_channels];         /* addr 1736 */
	float max_offset[max_channels];         /* addr 1744 */
	float min_vout[max_channels];		/* addr 1752 */
	float max_vout[max_channels];		/* addr 1760 */
	float min_freq[max_channels];           /* addr 1768 */
	float max_freq[max_channels];		/* addr 1776 */
	float min_pw[max_channels];		/* addr 1784 */
	float max_pw[max_channels];		/* addr 1792 */
	float max_delay[max_channels];		/* addr 1800 - see also min_delay (new) */
	float propagation_delay[max_channels];	/* addr 1808 */
	float delay_shrink[max_channels];	/* addr 1816 */
	float ampl_zero_equiv[max_channels];	/* addr 1824 - also sets min ampl magnitude in AVRQ -AHV, -XHV */
	float max_duty_low[max_channels]; 	/* addr 1832 */
	float max_duty_high[max_channels];	/* addr 1840 */
	float duty_ampl[max_channels];          /* addr 1848 */
	float duty_highRL_above_v[max_channels];	/* addr 1856 */
	float mon_pw_threshold[max_channels];		/* addr 1864 */
	float monitor_step[max_channels];		/* addr 1872 */

	char sep_posneg_mon_ratio[max_channels];	/* addr 1880 */
	char volt_ctrl_pw[max_channels];		/* addr 1882 */
	char voltage_enabled[max_channels];		/* addr 1884 */
	char voltage_offset_enabled[max_channels];	/* addr 1886 */
	char current_enabled[max_channels];		/* addr 1888 */
	char current_offset_enabled[max_channels];	/* addr 1890 */
	char switchable_zout[max_channels];		/* addr 1892 */
	char dc_mode_allowed[max_channels];
	char pw_ab_mode_enabled[max_channels];		/* addr 1896 */
	char double_pulse_allowed[max_channels];
	char invert_allowed[max_channels];
	char ea_enabled[max_channels]; 			/* addr 1902 */
	char switchable_load[max_channels];
	char monitor_enabled[max_channels]; 		/* addr 1906 */
	char use_pos_ampl_data_only[max_channels];
	char rise_time_min_max_only[max_channels];	/* addr 1910
							   Formerly ampl_min_max_only.
							   Use fixed_ampl_points instead */

	short zout_min[max_channels];                   /* addr 1912 */
	short os_dacval[max_channels][os_ranges][os_polarities][old_range_size_ten];	/* addr 1916 */
	float os_pwl[max_channels][os_ranges][os_polarities][old_range_size_ten];		/* addr 2116 */

	short ampl_DAC[max_channels];			/* addr 2516 */
	short os_DAC[max_channels];			/* addr 2520 */
	short polarity_xtra_rly[max_channels];		/* addr 2524 */
	char fixed_pw[max_channels];			/* addr 2528 */

	char eo_enabled[max_channels];			/* addr 2530 */
	char ext_amplify_enabled[max_channels];		/* addr 2532 */

	char volt_ctrl_delay[max_channels];		/* addr 2534 */
	float rise_time_pwl[max_channels][ampl_ranges][ampl_polarities][old_range_size_ten];	/* addr 2536 */

	short ext_amplify_xtra_rly[max_channels];	/* addr 3336 */
	short ea_xtra_rly[max_channels];		/* addr 3340 */

	short rcl_misc2[max_channels][max_stored_settings];	/* addr 3344 */

	short pw_dacval[max_channels][timing_ranges][timing_polarities][old_range_size_ten];	/* addr 3360 */
	float pw_pwl[max_channels][timing_ranges][timing_polarities][old_range_size_ten];		/* addr 3680 */

	short delay_dacval[max_channels][timing_ranges][timing_polarities][old_range_size_ten];	/* addr 4320 */
	float delay_pwl[max_channels][timing_ranges][timing_polarities][old_range_size_ten];

	short period_dacval[max_channels][timing_ranges][timing_polarities][old_range_size_ten];	/* addr 5280 */
	float period_pwl[max_channels][timing_ranges][timing_polarities][old_range_size_ten];


	float distort_X[max_channels];			/* distortion = Z + X / (Ampl + Y). */
	float distort_Y[max_channels];
	float distort_Z[max_channels];
	float distort_max_ampl[max_channels];		/* Clamp distortion above this amplitude. */
	float distort_max_os[max_channels];		/* PW is not distorted for offsets above this. */

	char ampl_os_ranges_related[max_channels];	/* for 156A units where the offset affects the choice of amplitude range */
	char ampl_coupled_to_os[max_channels];		/* for 1011-OT units where increasing offset would decrease ampl if not corrected */

	float relay_delay_in_sec;			/* relay bounce time */
	float extended_relay_delay_in_sec;		/* allow capacitor banks to settle after range change */

	short max_burst_count[max_channels]; 		/* 6292 - max pulses per burst, normally 500 */
	float max_burst_duty[max_channels];		/* 6296 - maximum duty cycle within burst */
	float min_burst_gap[max_channels];		/* 6304 - minimum burst gap */
	float max_burst_gap[max_channels];		/* 6312 - maximum burst gap */
	float min_burst_per[max_channels];		/* 6320 */

	char is_func_gen[max_channels];	  		/* 6328 - is this a function generator? */
	char freq_dac[max_channels];	  		/* 6330 - DAC used by function generator frequency control circuit */

	char is_monocycle[max_channels];		/* 6332 - generate control voltage for monocycle spacing, using CH2 PW calibration */
	char monocycle_dac[max_channels];		/* 6334 */

	short burst_dacval[max_channels][timing_ranges][timing_polarities][old_range_size_ten];	/* 6336 */
	float burst_pwl[max_channels][timing_ranges][timing_polarities][old_range_size_ten];		/* 6656 */

	float pulse_width_pol_tweak[max_channels][ampl_polarities];	/* 7296 - allow for PW shift with polarity */

	short rcl_burst_count[max_channels][max_stored_settings];	/* 7312 - rcl/sav data for burst mode */
	float rcl_burst_time[max_channels][max_stored_settings];	/* 7328 - rcl/sav data for burst mode */

	char burst_func[max_channels];	   		/* 7360 - is this a function generator with burst mode? */

	short initial_dac_settings[8];			/* 7362 */

	char fixed_rise_time[max_channels];		/* 7378 */
	char rise_time_dac[max_channels];		/* 7380 */

	float min_rise_time[max_channels];		/* 7382 */
	float max_rise_time[max_channels];		/* 7390 */

	short output_timer[max_channels];		/* 7398 - turn off output after this time, in seconds */

	short pw_dac[max_channels];			/* 7402 - for voltage-controlled PW only */

	float rcl_rise_time[max_channels][max_stored_settings];		/* 7406 - rcl/sav data for rise time */
	short rise_time_dacval[max_channels][ampl_ranges][ampl_polarities][old_range_size_ten];	/* 7438 */

	short vcc1_dacval[1][1][1][old_range_size_ten];	/* no longer used */
	float vcc1_pwl[1][1][1][old_range_size_ten];		/* no longer used */
	short vcc2_dacval[1][1][1][old_range_size_ten];   /* no longer used */
	float vcc2_pwl[1][1][1][old_range_size_ten];		/* no longer used */
	float rcl_vcc1[max_channels][max_stored_settings];	/* no longer used */
	float rcl_vcc2[max_channels][max_stored_settings];	/* no longer used */
	float rcl_vlogic[max_channels][max_stored_settings];	/* no longer used */
	float vcc1_max[max_channels];				/* no longer used */
	float vcc2_min[max_channels];				/* no longer used */
	float vcc2_max[max_channels];				/* no longer used */

	float max_duty_mid1[max_channels];		/* addr 8078 - for AVO-8D3-B, etc */
	float duty_ampl_mid1[max_channels];          	/* addr 8086 */
	float max_duty_mid2[max_channels];		/* addr 8094 */
	float duty_ampl_mid2[max_channels];          	/* addr 8102 */

	float distort_fully_below_ampl[max_channels];	/* addr 8110 - used with pulse_width_pol_tweak, see S/N 13453 */
	char spare_char[272]; 				/* 8118 */

	float dead_time[max_channels];			/* 8390 */
	float current_limit_pulse_mode[max_channels];	/* 8398 */
	float current_limit_dc_mode[max_channels];	/* 8406 */
	float current_limit_full_scale[max_channels];	/* 8414 */
	char current_limit_dac[max_channels];		/* 8422 */
	char hard_current_limit_enabled[max_channels];	/* 8424 */

	short wait_states_after_sock_init;		/* 8426 - no longer used */

	char aux_error_message[40];			/* 8428 */

	short delay_dac[max_channels];			/* 8468 */

	float min_delay[max_channels];			/* 8472 */

	short invert_by_default[max_channels];		/* 8480 - set high for logically complemented outputs */

	char soft_current_limit_enabled[max_channels];	/* 8484 */

	float min_soft_current_limit[max_channels];	/* 8486 */
	float max_soft_current_limit[max_channels];	/* 8494 */
	float rcl_soft_current_limit[max_channels][max_stored_settings];	/* 8502 */

	float max_avg_ampl[max_channels];		/* 8534 */

	char pol_relay_high_for_pos[max_channels];	/* 8542 */

	float special_pw_range_minimum[max_channels];  	/* 8544 - originally for AVPP-2A-B-P-ILA, 1us-1ms range */

	short zout_max[max_channels]; 			/* addr 8552 */

	float pw_range_pol_tweaks[max_channels][timing_ranges][ampl_polarities];	/* addr 8556 */
	float pw_shift_below_this_ampl[max_channels];	/* addr 8684 */
	float pw_shift_below_ampl_by[max_channels];	/* addr 8692 */

	/* AVRQ special configs */
	char spare_config1[max_channels];		/* addr 8700 */
	char load_type_dac[max_channels];		/* addr 8702 */
	float sparex1[max_channels];        		/* addr 8704 */
	float sparex2[max_channels];			/* addr 8712 */
	float rcl_sparex3[max_channels][max_stored_settings];		/* addr 8720 */
	short load_type_dacval[max_channels][load_type_ranges][load_type_polarities][old_range_size_ten]; /* 8752 */
	float load_type_pwl[max_channels][load_type_ranges][load_type_polarities][old_range_size_ten];      /* 8792 */

	char pcb_203a_rise_time[max_channels];				/* addr 8872 */

	float ampl_min_abs_value[max_channels];				/* addr 8874 */
	float ampl_step_size[max_channels];				/* addr 8882 */

	/* -DIPFP special configs */
	short routing_required[max_channels];				/* addr 8890 - 0 (none), 1 (output), 2 (anode and cathode) */
	short routing_max_pins[max_channels];				/* addr 8894 */
	short rcl_route_primary[max_channels][max_stored_settings];	/* addr 8898 */
	short rcl_route_secondary[max_channels][max_stored_settings];	/* addr 8914 */

	/* AVRZ-5 special tweak */
	float delay_pol_tweak[max_channels][ampl_polarities];		/* addr 8930 - allow for delay shift with polarity */

	float duty_highRL_below_v[max_channels];			/* addr 8946 */
	short old_low_load_type[max_channels];				/* addr 8954 - normally 50 */
	short old_high_load_type[max_channels];				/* addr 8958 - normally 10000 */

	char slew_dac[max_channels];					/* addr 8962 */
	char curr_slew[max_channels];         				/* addr 8964 */
	float min_slew[max_channels];					/* addr 8966 */
	float max_slew[max_channels];					/* addr 8974 */
	float rcl_slew[max_channels][max_stored_settings];		/* addr 8982 */

	short slew_dacval[max_channels][timing_ranges][timing_polarities][old_range_size_ten];	/* addr 9014 */
	float slew_pwl[max_channels][timing_ranges][timing_polarities][old_range_size_ten];	/* addr 9334 */

	short fix_pw_dac_val[max_channels];							/* addr 9974 */

	float rcl_load[max_channels][max_stored_settings];		/* addr 9978 */

	float max_high_rl_duty[max_channels];  				/* addr 10010 */
	float max_peak_power[max_channels];				/* addr 10018 */
	float low_load_type[max_channels];				/* addr 10026 - normally 50 */
	float high_load_type[max_channels];				/* addr 10034 - normally 10000 */
	float max_avg_power[max_channels];                     		/* addr 10042 */
	float max_pw_pol[max_channels][ampl_polarities];		/* addr 10050 - over-rides normal max_pw */

	char use_high_ampl_ranges_for_high_pw_ranges[max_channels];	/* addr 10066 - for AVMP-4, no longer used */

	char couple_first_N_pw_ranges_to_ampl_ranges[max_channels];	// addr 10068 - use this instead (N=1) */
	// for example, if N = 2 (as for AVR-E3-B-R5-N-M5)
	//		PG A = pw range  0, ampl range 0
	//		PG B = pw range  1, ampl range 1
	//		PG C = pw range 2+, ampl range 2

        // for example, if N = 1 (as for AVMP-4-B)
        //              PG A = pw range  0, ampl range 0
        //              PG B = pw range 1+, ampl range 1

	// AVMP-4-B is different than AVPP units, because lowest PW range is NOT voltage controlled

	float attenuators[max_channels][max_attens];			// addr 10070
	// smallest attenuators first
	// value = magnitude of attenuation.
	// for example, for 20 dB, use 10.0
	//              for 15 dB, use 5.62
	//		for 10 dB, use 3.16

	float atten_percent_max_ampl[max_channels];			// addr 10134 - normally 0.93
	// don't use higher ampls in AVPs,
	// where PW shifts near max ampl


        char ew_enabled[max_channels];                  /* addr 10142 */
	short ew_xtra_rly[max_channels];		/* addr 10144 */

	char ignore_ampl_polarity[max_channels];	/* addr 10148, for AVR-D3-B-MS1 CH2 */

	char I2C_port_for_CH2_delay;			/* addr 10150, for AVIR-2-B-PN-DP-KMPC-VXI */
	char sparex4;

	char force_monotonic_ext_trig_delay[max_channels];	/* addr 10152 - maybe for AVL-5-B-PN-TR-DP-KMPD */

        float max_freq_for_high_ot[max_channels];       /* addr 10154, for 1011-OT */
        float high_ot[max_channels];                    /* addr 10162, for 1011-OT */

	float fixed_ampl_points[max_channels][max_fixed_ampl_points];	/* addr 10170, for AVR-D2, AVRQ-4 */

	char ext2_enabled[max_channels];		/* addr 10250, for KMPF */
	char toggle_trig_at_boot[max_channels];		/* addr 10252, for IL710 units */

	char sequential_attenuators[max_channels];	/* addr 10254, for AVRZ-5W-B-LVA style of 3 identical attenuators */


							/* addr 10256, add ampl-dependent distort output, 10V full-scale */
	short distort_dacval[max_channels][ampl_ranges][ampl_polarities][old_range_size_ten];
	char distort_dac[max_channels];			/* addr 10656 */
	char distort_enabled[max_channels];		/* addr 10658 */

	float double_pulse_extra_pw_margin[max_channels];	// addr 10660 - double pulse sep must be > (1.0 + this) * PW
	float double_pulse_extra_deadtime[max_channels];	// addr 10668                              + this
	float double_pulse_min_sep[max_channels];		// addr 10676

	float os_zero_equiv[max_channels];			// addr 10684

	char ot_error_message[40];                     /* addr 10692 */
	char ov_error_message[40];                     /* addr 10732 */

	char flash_end;

} FlashStruct;
#pragma pack(pop)


typedef struct {
	float err_min_freq[max_channels];               /* current minimum-allowed frequency */
	float err_max_freq[max_channels];               /* current maximum-allowed frequency */
	float err_min_pw[max_channels];                 /* current minimum-allowed pulse width */
	float err_max_pw[max_channels];                 /* current maximum-allowed pulse width */
	float err_min_delay[max_channels];              /* current minimum-allowed delay */
	float err_max_delay[max_channels];              /* current maximum-allowed delay */
	float err_min_ampl[max_channels];               /* current minimum-allowed amplitude */
	float err_max_ampl[max_channels];               /* current maximum-allowed amplitude */
	float err_min_offset[max_channels];             /* current minimum-allowed offset */
	float err_max_offset[max_channels];             /* current maximum-allowed offset */
	int err_max_burst_count[max_channels];          /* current maximum-allowed burst current */
	float err_min_burst_time[max_channels];         /* current minimum-allowed burst spacing */
	float err_max_burst_time[max_channels];         /* current maximum-allowed burst spacing */
	float err_min_rise_time[max_channels];          /* current minimum-allowed burst spacing */
	float err_max_rise_time[max_channels];          /* current maximum-allowed burst spacing */
	float err_min_soft_current_limit[max_channels];
	float err_max_soft_current_limit[max_channels];
	float err_min_slew[max_channels];
	float err_max_slew[max_channels];
	float err_min_load_type[max_channels];
	float err_max_load_type[max_channels];
	float composite_min_burst_time[max_channels];   /* minimum ever possible gap, taking into account all constraints */
} ConstraintsStruct;


#define error_queue_length 512
typedef struct {
	int error_queue[error_queue_length+1];
	int number_of_errors;
} ErrorStruct;



// note flags with non-zero default/reset values in globals.c
// for example, do_check_settings=1 by default
// These flags are reset by Main_Rst
typedef struct {
	int extended_ampl_min_max;
	int do_check_settings;
	int flash_writes_suspended;
	int force_output_fully_off;
	int attenuators_enabled;
} FlagStruct;


// These flags are NOT reset by Main_Rst, and default to 0
typedef struct {
	int shutdown_started;
	int flash_write_in_progress;
	int startup_complete;
} SysFlagStruct;


typedef struct {
	long startup_timer_value;
	long last_activity_at[max_channels];
	long normal_relay_bounce_time_in_milliseconds;
	long Relay_Switching_Delay_in_Milliseconds;
} TimeStruct;


// maximum number of ssh/getty sessions.
// same as max number of vxi sessions
#define MAX_SESSIONS 8

typedef struct {
	int terminal_connections;
	int vxi_connections;
	int vxi_service_request;
	int gpib_remote;
	int gpib_lock;
	int vxi_panel_lock;
} RemoteStruct;


typedef struct {
	bool beaglebone;
	bool olimex;
	bool has_gpib;
	bool has_i2c;
	bool has_gpmc;
	bool has_gpio;
	char remount_point[128];
	char firmware[16];
} HWDetectStruct;


#define NO_SERVER_LOCKED -1
typedef struct {
	int command_in_progress;
	int locked_network_server;
} LockStruct;

typedef struct {
	ConstraintsStruct Constraints;
	ChannelStruct ChannelState[max_channels];
	FlashStruct Flash;
	HWregStruct Registers;
	ChangeStruct Changes;
	ErrorStruct Errors;
	FlagStruct Flags;
	FlagStruct DefaultFlags;
	SysFlagStruct Sys;
	TimeStruct Timers;
	MenuStatusStruct MenuStatus;
	RemoteStruct Remote;
	HWDetectStruct HWDetect;
	LockStruct VxiLocks;
} GlobalStruct;


extern GlobalStruct globals;

#endif