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Commit
37b9536f
authored
Nov 29, 2022
by
karudu
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Plain Diff
Mõõtepiirkonna muutmine, pinge hoiatus
parent
beb6ac6c
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Showing
3 changed files
with
1187 additions
and
40 deletions
adc_vtable.ino
gen_table/gen_table.c
scope.ino
adc_vtable.ino
View file @
37b9536f
const
char
FLASH_VoltageTable
[
1024
*
3
]
PROGMEM
=
const
char
FLASH_VoltageTable
1x
[
1024
*
3
]
PROGMEM
=
{
'0'
,
'0'
,
'0'
,
'0'
,
'0'
,
'0'
,
...
...
@@ -1025,3 +1025,1031 @@ const char FLASH_VoltageTable[1024 * 3] PROGMEM =
'4'
,
'8'
,
'0'
,
'4'
,
'8'
,
'0'
,
};
const
char
FLASH_VoltageTable10x
[
1024
*
4
]
PROGMEM
=
// TODO
{
0
,
'0'
,
'0'
,
'0'
,
0
,
'0'
,
'0'
,
'5'
,
0
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'0'
,
'0'
,
'9'
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,
'0'
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'1'
,
'4'
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0
,
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'1'
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0
,
'0'
,
'2'
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'3'
,
0
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'0'
,
'2'
,
'8'
,
0
,
'0'
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'3'
,
'3'
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0
,
'0'
,
'3'
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'8'
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0
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'0'
,
'4'
,
'2'
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0
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'0'
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'4'
,
'7'
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0
,
'0'
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'5'
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'2'
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0
,
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'5'
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'1'
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'6'
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'1'
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'8'
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0
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'8'
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0
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'8'
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0
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'1'
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'2'
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'1'
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'9'
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'7'
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0
,
'2'
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'0'
,
'2'
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0
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'2'
,
'0'
,
'6'
,
0
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'2'
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'1'
,
'1'
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0
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'2'
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'1'
,
'6'
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0
,
'2'
,
'2'
,
'1'
,
0
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'2'
,
'2'
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'5'
,
0
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'2'
,
'3'
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'0'
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0
,
'2'
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'3'
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'5'
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0
,
'2'
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'3'
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0
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'2'
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'4'
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'4'
,
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'2'
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'9'
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'2'
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0
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'5'
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'6'
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'3'
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'7'
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'2'
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0
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'7'
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'2'
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'8'
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'2'
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'6'
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0
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'2'
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'6'
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'3'
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'3'
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0
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0
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'4'
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0
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'3'
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'3'
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0
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'4'
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0
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0
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'4'
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'4'
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'0'
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0
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0
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0
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0
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'9'
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0
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'3'
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,
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,
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,
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,
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,
'2'
,
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,
'1'
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'1'
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,
'1'
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,
'2'
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'1'
,
'1'
,
'1'
,
'2'
,
'6'
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'1'
,
'1'
,
'3'
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'1'
,
'1'
,
'1'
,
'3'
,
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'1'
,
'1'
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'6'
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'1'
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'1'
,
'6'
,
'8'
,
'1'
,
'1'
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'7'
,
'3'
,
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,
'4'
,
'7'
,
'7'
,
'7'
,
'4'
,
'7'
,
'8'
,
'1'
,
'4'
,
'7'
,
'8'
,
'6'
,
'4'
,
'7'
,
'9'
,
'1'
,
'4'
,
'7'
,
'9'
,
'5'
,
'4'
,
'8'
,
'0'
,
'0'
,
};
gen_table/gen_table.c
View file @
37b9536f
...
...
@@ -5,18 +5,34 @@
int
main
(
int
argc
,
char
**
argv
)
{
FILE
*
File
=
fopen
(
"adc_vtable.ino"
,
"w"
);
printf
(
"Enter max voltage
\n
"
);
double
Max
;
scanf
(
"%lf"
,
&
Max
);
double
Max1
,
Max10
;
printf
(
"Enter 1x max voltage
\n
"
);
scanf
(
"%lf"
,
&
Max1
);
printf
(
"Enter 10x max voltage
\n
"
);
scanf
(
"%lf"
,
&
Max10
);
fprintf
(
File
,
"const char FLASH_VoltageTable[1024 * 3] PROGMEM =
\n
"
);
fprintf
(
File
,
"const char FLASH_VoltageTable
1x
[1024 * 3] PROGMEM =
\n
"
);
fprintf
(
File
,
"{
\n
"
);
for
(
int
i
=
0
;
i
<
1024
;
i
++
)
{
char
Buf
[
16
];
sprintf
(
Buf
,
"%.02f"
,
((
double
)
i
/
1023
.
0
)
*
Max
);
sprintf
(
Buf
,
"%.02f"
,
((
double
)
i
/
1023
.
0
)
*
Max
1
);
fprintf
(
File
,
"
\t
'%c', '%c', '%c',
\n
"
,
Buf
[
0
],
Buf
[
2
],
Buf
[
3
]);
}
fprintf
(
File
,
"};
\n\n
"
);
fprintf
(
File
,
"const char FLASH_VoltageTable10x[1024 * 4] PROGMEM =
\n
"
);
fprintf
(
File
,
"{
\n
"
);
for
(
int
i
=
0
;
i
<
1024
;
i
++
)
{
char
Buf
[
16
];
sprintf
(
Buf
,
"%.02f"
,
((
double
)
i
/
1023
.
0
)
*
Max10
);
size_t
Length
=
strlen
(
Buf
);
if
(
Length
==
4
)
fprintf
(
File
,
"
\t
0, '%c', '%c', '%c',
\n
"
,
Buf
[
0
],
Buf
[
2
],
Buf
[
3
]);
else
if
(
Length
==
5
)
fprintf
(
File
,
"
\t
'%c', '%c', '%c', '%c',
\n
"
,
Buf
[
0
],
Buf
[
1
],
Buf
[
3
],
Buf
[
4
]);
}
fprintf
(
File
,
"};
\n
"
);
return
0
;
...
...
scope.ino
View file @
37b9536f
/* Configuration options */
// Cursor values in format xx.x
#define CURSOR_1 "5.0"
#define CURSOR_2 "0.0"
// Voltage warning limits (indexes for FLASH_VoltageTable10x)
#define LIMIT_5V 107
#define LIMIT_10V 214
#define LIMIT_30V 640
// Range auto adjust thresholds (indexes for FLASH_VoltageTable1x/10x)
#define AUTO_ADJ_MAX_4_8V 958 // 4.5 V
#define AUTO_ADJ_MIN_48V 96 // 4.5 V
// Delay before changing from 48 V to 4.8 V range if voltage is below threshold
#define AUTO_ADJ_DELAY_MS 2500
// Uncomment to disable 48 V range
//#define NO_AUTO_ADJ
// Uncomment to run in oneshot mode
//#define ONESHOT_MODE
// Period to measure in
#define ONESHOT_PERIOD PERIOD_1MS
// How many points to measure before stopping (Serial Monitor display is 49 points wide)
#define ONESHOT_POINTS 49
/* Defines */
#define PIN_BUTTON_1 5 // BUTTON_RANGE_DN
#define PIN_BUTTON_2 4 // BUTTON_RANGE_UP
#define PIN_BUTTON_3 3 // BUTTON_FREQ
#define PIN_BUTTON_4 2 // BUTTON_SHUTDOWN
#define PIN_LED 6
#define PIN_RANGE_ADJUST 7
#define PIN_BEEPER 8
#define PIN_ADC 7 // A7
#define BUTTON_RANGE_DN 0
...
...
@@ -16,16 +42,9 @@
#define PERIOD_100MS 4
#define PERIOD_1S 5
/* Configuration options */
// Cursor values in format xx.x
#define CURSOR_1 "5.0"
#define CURSOR_2 "0.0"
// Uncomment to run in oneshot mode
//#define ONESHOT_MODE
// Period to measure in
#define ONESHOT_PERIOD PERIOD_1MS
// How many points to measure before stopping (Serial Monitor display is 49 points wide)
#define ONESHOT_POINTS 49
#define RANGE_5V 0
#define RANGE_10V 1
#define RANGE_30V 2
// https://www.gammon.com.au/adc
...
...
@@ -36,6 +55,18 @@ char G_MeasureFreq;
char
G_TimeCounter
;
#define TIME_L_VALUE '0'
#define TIME_H_VALUE "0.5"
char
G_Warning
;
#define BLINK_PERIOD_US 100000 // 0.1s
#define BEEP_PERIOD_US 562 // 1780 Hz
unsigned
long
G_BlinkTime
;
unsigned
long
G_BeepTime
;
char
G_BlinkState
;
char
G_BeepState
;
short
G_MaxVoltage
;
#define RANGE_4_8V 0
#define RANGE_48V 1
char
G_Range
;
unsigned
long
G_AutoAdjTime
;
#ifdef ONESHOT_MODE
int
G_OneshotPoints
;
#endif
...
...
@@ -46,7 +77,8 @@ int G_PrevButtonState[4];
#define DEBOUNCE_DELAY_MS 25
/* Flash data */
extern
const
char
FLASH_VoltageTable
[
1024
*
3
]
PROGMEM
;
extern
const
char
FLASH_VoltageTable1x
[
1024
*
3
]
PROGMEM
;
extern
const
char
FLASH_VoltageTable10x
[
1024
*
4
]
PROGMEM
;
byte
ReadButton
(
int
Button
)
{
...
...
@@ -73,23 +105,15 @@ void Stop()
TCCR1A
=
0
;
TCCR1B
=
0
;
// Stop the timer
Serial
.
end
();
Serial
.
begin
(
9600
);
ADCSRA
=
bit
(
ADEN
);
ADCSRA
|=
bit
(
ADPS2
)
|
bit
(
ADPS1
)
|
bit
(
ADPS0
);
// Prescaler 128
ADMUX
=
bit
(
REFS0
)
|
PIN_ADC
;
ADCSRB
=
bit
(
ADTS0
);
digitalWrite
(
PIN_LED
,
HIGH
);
for
(;;)
{}
}
// Error occured, light the onboard LED and stop the program
void
Error
()
{
cli
();
digitalWrite
(
LED_BUILTIN
,
HIGH
);
for
(;;)
{}
}
// Set up the ADC registers
void
InitADC
()
{
...
...
@@ -107,7 +131,7 @@ void SetTimerPeriod(int Period)
TCCR1A
=
0
;
TCCR1B
=
0
;
// Reset TCCR
TCNT0
=
0
;
// Reset the counter
// http://www.8bit-era.cz/arduino-timer-interrupts-calculator.html
switch
(
Period
)
{
...
...
@@ -145,7 +169,7 @@ void SetTimerPeriod(int Period)
{
Serial
.
print
(
"SetTimerPeriod: Invalid period "
);
Serial
.
println
(
Period
);
Error
();
Stop
();
}
break
;
}
...
...
@@ -163,13 +187,45 @@ ISR(ADC_vect)
//unsigned long tstart = micros();
//Serial.println((ADC / 1023.0) * 4.8);
volatile
unsigned
int
Value
=
ADC
;
// Read the ADC
Serial
.
write
(
G_CursorBuf
);
volatile
unsigned
int
Value
=
ADC
;
int
P
=
Value
*
3
;
Serial
.
write
(
pgm_read_word_near
(
FLASH_VoltageTable
+
P
+
0
));
Serial
.
write
(
'.'
);
Serial
.
write
(
pgm_read_word_near
(
FLASH_VoltageTable
+
P
+
1
));
Serial
.
write
(
pgm_read_word_near
(
FLASH_VoltageTable
+
P
+
2
));
if
(
G_Range
==
RANGE_4_8V
)
{
int
P
=
Value
*
3
;
Serial
.
write
(
pgm_read_byte_near
(
FLASH_VoltageTable1x
+
P
+
0
));
Serial
.
write
(
'.'
);
Serial
.
write
(
pgm_read_byte_near
(
FLASH_VoltageTable1x
+
P
+
1
));
Serial
.
write
(
pgm_read_byte_near
(
FLASH_VoltageTable1x
+
P
+
2
));
#ifndef NO_AUTO_ADJ
if
(
Value
>=
AUTO_ADJ_MAX_4_8V
)
{
// Go to 48 V range once voltage goes above threshold
G_Range
=
RANGE_48V
;
digitalWrite
(
PIN_RANGE_ADJUST
,
HIGH
);
G_AutoAdjTime
=
millis
();
}
#endif
}
else
{
int
P
=
Value
*
4
;
char
Byte1
=
pgm_read_byte_near
(
FLASH_VoltageTable10x
+
P
+
0
);
if
(
Byte1
)
Serial
.
write
(
Byte1
);
Serial
.
write
(
pgm_read_byte_near
(
FLASH_VoltageTable10x
+
P
+
1
));
Serial
.
write
(
'.'
);
Serial
.
write
(
pgm_read_byte_near
(
FLASH_VoltageTable10x
+
P
+
2
));
Serial
.
write
(
pgm_read_byte_near
(
FLASH_VoltageTable10x
+
P
+
3
));
// Voltage warning is checked in 48 V range
if
(
Value
>=
G_MaxVoltage
)
G_Warning
=
1
;
else
G_Warning
=
0
;
if
(
Value
>
AUTO_ADJ_MIN_48V
)
G_AutoAdjTime
=
millis
();
}
if
(
G_MeasureFreq
!=
PERIOD_100US
)
{
Serial
.
write
(
'\t'
);
...
...
@@ -199,6 +255,13 @@ void setup()
pinMode
(
PIN_BUTTON_2
,
INPUT_PULLUP
);
pinMode
(
PIN_BUTTON_3
,
INPUT_PULLUP
);
pinMode
(
PIN_BUTTON_4
,
INPUT_PULLUP
);
pinMode
(
PIN_LED
,
OUTPUT
);
pinMode
(
PIN_RANGE_ADJUST
,
OUTPUT
);
digitalWrite
(
PIN_RANGE_ADJUST
,
LOW
);
G_Range
=
RANGE_4_8V
;
digitalWrite
(
PIN_LED
,
LOW
);
digitalWrite
(
PIN_BEEPER
,
LOW
);
Serial
.
begin
(
2000000
);
#ifndef ONESHOT_MODE
...
...
@@ -217,23 +280,63 @@ void setup()
sprintf
(
G_CursorBuf
,
"%s
\t
%s
\t
"
,
CURSOR_1
,
CURSOR_2
);
// Precalculate the cursor string
G_TimeCounter
=
10
;
G_Warning
=
0
;
G_BlinkTime
=
0
;
G_BeepTime
=
0
;
G_BlinkState
=
LOW
;
G_BeepState
=
LOW
;
G_MaxVoltage
=
LIMIT_5V
;
}
int
lstate
=
LOW
;
void
loop
()
{
if
(
G_Warning
)
{
unsigned
long
Time
=
micros
();
if
(
Time
-
G_BlinkTime
>=
BLINK_PERIOD_US
)
{
if
(
G_BlinkState
==
LOW
)
G_BlinkState
=
HIGH
;
else
G_BlinkState
=
LOW
;
digitalWrite
(
PIN_LED
,
G_BlinkState
);
G_BlinkTime
=
Time
;
}
Time
=
micros
();
if
(
Time
-
G_BeepTime
>=
BEEP_PERIOD_US
)
{
if
(
G_BeepState
==
LOW
)
G_BeepState
=
HIGH
;
else
G_BeepState
=
LOW
;
digitalWrite
(
PIN_BEEPER
,
G_BeepState
);
G_BeepTime
=
Time
;
}
}
else
if
(
G_BlinkState
==
HIGH
)
{
G_BlinkState
=
LOW
;
digitalWrite
(
PIN_LED
,
LOW
);
}
if
(
G_Range
==
RANGE_48V
)
{
if
(
millis
()
-
G_AutoAdjTime
>=
AUTO_ADJ_DELAY_MS
)
{
G_Range
=
RANGE_4_8V
;
digitalWrite
(
PIN_RANGE_ADJUST
,
LOW
);
}
}
if
(
ReadButton
(
BUTTON_RANGE_UP
)
==
1
)
{
if
(
lstate
==
LOW
)
lstate
=
HIGH
;
else
lstate
=
LOW
;
digitalWrite
(
LED_BUILTIN
,
lstate
);
if
(
G_MaxVoltage
==
LIMIT_5V
)
G_MaxVoltage
=
LIMIT_10V
;
else
if
(
G_MaxVoltage
==
LIMIT_10V
)
G_MaxVoltage
=
LIMIT_30V
;
}
if
(
ReadButton
(
BUTTON_RANGE_DN
)
==
1
)
{
if
(
lstate
==
LOW
)
lstate
=
HIGH
;
else
lstate
=
LOW
;
digitalWrite
(
LED_BUILTIN
,
lstate
);
if
(
G_MaxVoltage
==
LIMIT_30V
)
G_MaxVoltage
=
LIMIT_10V
;
else
if
(
G_MaxVoltage
==
LIMIT_10V
)
G_MaxVoltage
=
LIMIT_5V
;
}
if
(
ReadButton
(
BUTTON_FREQ
)
==
1
)
...
...
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