From d7f742964e475804daf0211ea0825efa4bf4bf64 Mon Sep 17 00:00:00 2001
From: Mike <mjc@avtechpulse.com>
Date: Sat, 1 Jan 2000 01:42:04 +0900
Subject: make force_output_fully_off work properly for 2-channel units

---
 bus.c              |  6 ++++++
 device-functions.c | 36 ++++++++++++++++++++++--------------
 globals.c          |  2 ++
 globals.h          |  7 ++++++-
 4 files changed, 36 insertions(+), 15 deletions(-)

diff --git a/bus.c b/bus.c
index ee0f8cb..72e93d5 100644
--- a/bus.c
+++ b/bus.c
@@ -418,6 +418,12 @@ void bus_setpin(int pin, int value)
 	if (globals.HWDetect.has_gpio) {
 		gpio_writevalue(gpio_pins[pin], value & 0x1);
 	}
+
+	if ((pin != out_CLOCK_LINE) &&
+	    (pin != out_STROBE_LINE) &&
+	    (pin != out_DATA_LINE)) {
+		g_print_debug ("GPIO pin %d, val %d (some pins excl)\n\r",pin,value);
+	}
 }
 
 void bus_writebyte(uint8_t address, uint8_t data)
diff --git a/device-functions.c b/device-functions.c
index d32c933..b54e14b 100644
--- a/device-functions.c
+++ b/device-functions.c
@@ -435,13 +435,9 @@ int Set_Amplitude(int check_possible_only,int pol_override,int override_on,int w
 		I2C_Write(PCF8574+Octal_Relay_Driver, atten_ctl);
 	}
 
-	if (	(globals.Registers.last_relay_driver_settings[3] != atten_ctl)) {
-
-		globals.Registers.last_relay_driver_settings[3] = atten_ctl;
-
-		if (globals.ChannelState[channel].output_state==output_on) {
-			globals.Flags.force_output_fully_off=YES;
-		}
+	if (    (globals.Registers.last_relay_driver_settings[3+channel] != atten_ctl)) {
+		globals.Registers.last_relay_driver_settings[3+channel] = atten_ctl;
+		globals.Flags.force_output_fully_off=YES;
 	}
 
 	g_print_debug("ampl range %d, word %d\n",relay_range,word_out);
@@ -451,7 +447,7 @@ int Set_Amplitude(int check_possible_only,int pol_override,int override_on,int w
 	globals.ChannelState[channel].amplitude=new_ampl;
 	Set_Update_Chans();
 
-	if ((relay_range!=old_range) && (globals.ChannelState[channel].output_state==output_on)) {
+	if (relay_range!=old_range) {
 		globals.Flags.force_output_fully_off=YES;
 	}
 
@@ -703,7 +699,7 @@ int Set_Offset(int check_possible_only,int override_on,int word_override,int ran
 	globals.ChannelState[channel].offset=new_offset;
 	Set_Update_Chans();
 
-	if ((relay_range!=old_range) && (globals.ChannelState[channel].output_state==output_on)) {
+	if (relay_range!=old_range) {
 		globals.Flags.force_output_fully_off=YES;
 	}
 
@@ -795,7 +791,7 @@ int Set_frequency(int check_possible_only,int word_override,int range_override,i
 
 		set_shiftreg_bits(SR_2, XTR_POS + 1, THREE_BITS, relay_range);
 
-		if ((relay_range!=old_range) && (globals.ChannelState[channel].output_state==output_on)) {
+		if (relay_range!=old_range) {
 			globals.Flags.force_output_fully_off=YES;
 		}
 	}
@@ -3909,8 +3905,6 @@ int Set_rise_time(int check_possible_only,int word_override,int range_override,i
 			}
 		}
 
-
-
 		if (globals.Registers.last_rise_time_relay_setting != range_control) {
 			/* update range hardware */
 			if (globals.ChannelState[channel].trigger_source!=source_hold) {
@@ -4611,8 +4605,20 @@ void Main_update_shift_registers()
 	}
 
 
-	/* physically turn off output for amplitude range changes */
-	/* i.e., short output in 155's */
+	/* physically turn off output for amplitude range changes
+	   but don't bother if all outputs are off */
+
+	int outputs_on;
+	outputs_on = 0;
+	for (i = 0; i < max_channels; i++) {
+		if (globals.ChannelState[i].output_state==output_on) {
+			++outputs_on;
+		}
+	}
+	if (outputs_on == 0) {
+		globals.Flags.force_output_fully_off=NO;
+	}
+
 	if (globals.Flags.force_output_fully_off==YES)
 		for (i=0; i<(globals.Flash.ChanKey_frequency?globals.Flash.channels:1); ++i) {
 			temp_output_state[i]=globals.ChannelState[i].output_state;
@@ -4623,7 +4629,9 @@ void Main_update_shift_registers()
 	bus_setpin(out_CLOCK_LINE, 1);
 	bus_setpin(out_STROBE_LINE, 0);
 
+	g_print_debug ("\n\r-----------\n\r");
 	for (i=(num_out_SRs-1); i>=0; --i) {
+		g_print_debug ("SR %d = %lx hex\n\r",i,globals.Registers.shift_reg_out[i]);
 		switch (i) {
 		case 0:
 		case 1:
diff --git a/globals.c b/globals.c
index d2a5eea..5948a79 100644
--- a/globals.c
+++ b/globals.c
@@ -14,6 +14,8 @@ GlobalStruct globals = {
 	.Registers.last_relay_driver_settings[0] = -1,
 	.Registers.last_relay_driver_settings[1] = -1,
 	.Registers.last_relay_driver_settings[2] = -1,
+	.Registers.last_relay_driver_settings[3] = -1,
+	.Registers.last_relay_driver_settings[4] = -1,
 
 	.Registers.gpib_input_buffer[0] = 0,
 	.Registers.pending_output_message = NULL,
diff --git a/globals.h b/globals.h
index e753067..534a9bc 100644
--- a/globals.h
+++ b/globals.h
@@ -306,7 +306,12 @@ unsigned long long ms_timer (void);
 typedef struct {
 	int parallel_DAC_reg[max_dacs];
 	long shift_reg_out[num_out_SRs];
-	long last_relay_driver_settings[4];
+	long last_relay_driver_settings[5];	/*	0 = SR2
+							1 = SR3
+							2 = CH1 -BR
+							3 = CH1 atten settings
+							4 = CH2 atten settings 	*/
+
 	int oper_enable_register;       /* for stat:enable command */
 	int ques_enable_register;       /* for stat:enable command */
 	int avrq_reg;
-- 
cgit