several patches that mean a dramatic power reduction while in idle/armed + neutral

Makefile

@@ -10,8 +10,8 @@ AUX_TARGETS = afro_pr0.hex afro_pr1.hex diy0.hex
 
 all: $(ALL_TARGETS)
 
-$(ALL_TARGETS): tgy.asm boot.inc
-$(AUX_TARGETS): tgy.asm boot.inc
+$(ALL_TARGETS): tgy.asm boot.inc ntc-table.inc
+$(AUX_TARGETS): tgy.asm boot.inc ntc-table.inc
 
 .inc.hex:
 	@test -e $*.asm || ln -s tgy.asm $*.asm
@@ -24,6 +24,9 @@ test: all
 clean:
 	-rm -f $(ALL_TARGETS) *.cof *.obj *.eep.hex *.eeprom
 
+ntc-table.inc: create-ntc-table.sh *.inc
+	./create-ntc-table.sh > $@
+
 binary_zip: $(ALL_TARGETS)
 	TARGET="tgy_`date '+%Y-%m-%d'`_`git rev-parse --verify --short HEAD`"; \
 	mkdir "$$TARGET" && \

afro_nfet.inc

@@ -9,6 +9,9 @@
 .equ	USE_I2C		= 1
 .equ	USE_UART	= 1
 .equ	USE_ICP		= 1
+.equ	USE_SLEEP	= 2
+.equ	USE_LED_PWM	= 3
+.equ	USE_ADC		= 1
 
 .equ	DEAD_LOW_NS	= 300
 .equ	DEAD_HIGH_NS	= 300
@@ -37,7 +40,12 @@
 ; PORT C definitions *
 ;*********************
 .equ	mux_voltage	= 7	; ADC7 voltage input (18k from Vbat, 3.3k to gnd, 10.10V -> 1.565V at ADC7)
+.equ	mux_voltage_mul	= (5*256*(18000+3300)/3300)
+.equ	mux_voltage_off = 0
 .equ	mux_temperature	= 6	; ADC6 temperature input (3.3k from +5V, 10k NTC to gnd)
+.equ	mux_temperature_rpullup	= 3300
+.equ	mux_temperature_rntc	= 10000
+.equ	mux_temperature_beta	= 3950
 .equ	i2c_clk		= 5	; ADC5/SCL
 .equ	i2c_data	= 4	; ADC4/SDA
 .equ	red_led		= 3	; o
@@ -62,7 +70,7 @@
 .ENDMACRO
 .MACRO GRN_off
 	cbi	DDRC, green_led
-.ENDMACRO
+.ENDMACRO
 
 ;*********************
 ; PORT D definitions *
@@ -83,3 +91,27 @@
 .equ	BnFET_port	= PORTD
 .equ	CnFET_port	= PORTD
 .equ	ApFET_port	= PORTD
+
+;*****************************************
+; ENABLE_LOW_POWER_FET_MODE during sleep *
+;*****************************************
+.equ	USE_FET_SET_LOW_POWER = 1
+.equ	USE_FET_RESET_LOW_POWER = 1
+
+.MACRO FET_SET_LOW_POWER
+cbi AnFET_port,AnFET
+cbi BnFET_port,BnFET
+cbi CnFET_port,CnFET
+cbi ApFET_port,ApFET
+cbi BpFET_port,BpFET
+cbi CpFET_port,CpFET
+.ENDMACRO
+
+.MACRO FET_RESET_LOW_POWER
+cbi AnFET_port,AnFET
+cbi BnFET_port,BnFET
+cbi CnFET_port,CnFET
+sbi ApFET_port,ApFET
+sbi BpFET_port,BpFET
+sbi CpFET_port,CpFET
+.ENDMACRO

create-ntc-table.sh

@@ -0,0 +1,56 @@
+#! /bin/sh
+
+RPULLUP_VALUES="`awk -F= '/^\.equ[ \t]*mux_temperature_rpullup/{C[$2]++}END{for(i in C){if(i!=0)printf "%i ",i;}}' *.inc`"
+RNTC_VALUES="`awk -F= '/^\.equ[ \t]*mux_temperature_rntc[ \t]*=/{C[$2]++}END{for(i in C){if(i!=0)printf "%i ",i;}}' *.inc`"
+BETA_VALUES="`awk -F= '/^\.equ[ \t]*mux_temperature_beta[ \t]*=/{C[$2]++}END{for(i in C){if(i!=0)printf "%i ",i;}}' *.inc`"
+
+test -z "$1" || RPULLUP_VALUES=$1
+test -z "$2" || RNTC_VALUES=$2
+test -z "$3" || BETA_VALUES=$3
+
+echo "; NTC thermal tables"
+echo "; generated via script: $0"
+echo ".if defined(mux_temperature_rpullup) && defined(mux_temperature_rntc) && defined(mux_temperature_beta)"
+(
+for R in $RPULLUP_VALUES; do
+ for T in $RNTC_VALUES; do
+  for B in $BETA_VALUES; do
+    echo "$R $T $B";
+  done
+ done
+done
+) | awk '
+function printline(A,B) {
+  # scale and saturate
+  C=B*256;
+  if (C<-32768){ C=-32768; }
+  if (C>32767){ C=32767; }
+  TS=C/256;
+  if (C<0){C+=65536};
+  # and print
+  printf "\t.dw 0x%04x\t; ADC = %4i, Temp = %6.1fC\n", C, A, TS;
+}
+{
+  RPULLUP=$1;
+  RTHERMAL=$2;
+  BETA=$3;
+  printf ";----------------------------------------------------------------\n";
+  printf "; RPULLUP = %i, RTHERMAL = %i, BETA = %i\n", RPULLUP, RTHERMAL, BETA;
+  printf ".%sif (mux_temperature_rpullup == %i) && (mux_temperature_rntc == %i) && (mux_temperature_beta == %i)\n", PREFIX, RPULLUP, RTHERMAL, BETA;
+  PREFIX="else";
+  printline(0, -100*RPULLUP);
+  for(ADC=1;ADC<255;ADC++){
+    # handle both pullups/pulldowns
+    if (RPULLUP<0) {
+      X=-((255/(255-ADC))-1)*RPULLUP/RTHERMAL;
+    } else {
+      X=((255/ADC)-1)*RPULLUP/RTHERMAL;
+    }
+    # do the real calculation
+    ITK=log(X)/BETA + 1/(273.15+25);
+    T=1/ITK -273.15;
+  printline(ADC,T)
+  }
+  printline(255, 100*RPULLUP);
+}
+END{if (NR>0) {printf ".else\n\t.error \"No corresponding BETA, RPULLUP and RNTC values found - please recreate ntc-table.inc via make to reflect your changes to .inc\"\n.endif\n.endif\n";}}'