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added support for removing leading zeros in displaying numbers

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rjbatista@gmail.com
2011-10-19 23:43:58 +00:00
parent 1716fddf4a
commit e3075c02e2
3 changed files with 39 additions and 10 deletions
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15
CHANGES.txt Normal file
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@@ -0,0 +1,15 @@
Version 1.3.0
- added support for removing leading zeros in displaying numbers.
Version 1.2.0
- added support for writing text.
Version 1.1.0
- restructuring and added 2 proper examples, available in the arduino ide.
Version 1.0.0
- initial Release.

23
TM1638.cpp
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@@ -51,15 +51,19 @@ void TM1638::setupDisplay(boolean active, byte intensity)
} }
void TM1638::setDisplayToHexNumber(unsigned long number, byte dots) void TM1638::setDisplayToHexNumber(unsigned long number, byte dots, boolean leadingZeros)
{ {
for (int i = 0; i < 8; i++) { for (int i = 0; i < 8; i++) {
setDisplayDigit(number & 0xF, 7 - i, (dots & (1 << i)) != 0); if (!leadingZeros && number == 0) {
number >>= 4; clearDisplayDigit(7 - i, (dots & (1 << i)) != 0);
} else {
setDisplayDigit(number & 0xF, 7 - i, (dots & (1 << i)) != 0);
number >>= 4;
}
} }
} }
void TM1638::setDisplayToDecNumber(unsigned long number, byte dots) void TM1638::setDisplayToDecNumber(unsigned long number, byte dots, boolean leadingZeros)
{ {
if (number > 99999999L) { if (number > 99999999L) {
setDisplay(ERROR); setDisplay(ERROR);
@@ -69,7 +73,11 @@ void TM1638::setDisplayToDecNumber(unsigned long number, byte dots)
setDisplayDigit(number % 10, 7 - i, (dots & (1 << i)) != 0); setDisplayDigit(number % 10, 7 - i, (dots & (1 << i)) != 0);
number /= 10; number /= 10;
} else { } else {
setDisplayDigit(0, 7 - i, (dots & (1 << i)) != 0); if (leadingZeros) {
setDisplayDigit(0, 7 - i, (dots & (1 << i)) != 0);
} else {
clearDisplayDigit(7 - i, (dots & (1 << i)) != 0);
}
} }
} }
} }
@@ -87,6 +95,11 @@ void TM1638::setDisplayDigit(byte digit, byte pos, boolean dot)
sendData(pos << 1, NUMBER_DATA[digit & 0xF] | (dot ? 0b10000000 : 0)); sendData(pos << 1, NUMBER_DATA[digit & 0xF] | (dot ? 0b10000000 : 0));
} }
void TM1638::clearDisplayDigit(byte pos, boolean dot)
{
sendData(pos << 1, (dot ? 0b10000000 : 0));
}
void TM1638::setDisplay(const byte values[]) void TM1638::setDisplay(const byte values[])
{ {
for (int i = 0; i < 8; i++) { for (int i = 0; i < 8; i++) {

11
TM1638.h
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@@ -36,14 +36,16 @@ class TM1638
/** Set the display (segments and LEDs) active or off and intensity (range from 0-7). */ /** Set the display (segments and LEDs) active or off and intensity (range from 0-7). */
void setupDisplay(boolean active, byte intensity); void setupDisplay(boolean active, byte intensity);
/** Set the display to a unsigned hexadecimal number */ /** Set the display to a unsigned hexadecimal number (with or without leading zeros) */
void setDisplayToHexNumber(unsigned long number, byte dots); void setDisplayToHexNumber(unsigned long number, byte dots, boolean leadingZeros = true);
/** Set the display to a unsigned decimal number */ /** Set the display to a unsigned decimal number (with or without leading zeros) */
void setDisplayToDecNumber(unsigned long number, byte dots); void setDisplayToDecNumber(unsigned long number, byte dots, boolean leadingZeros = true);
/** Set the display to a unsigned binary number */ /** Set the display to a unsigned binary number */
void setDisplayToBinNumber(byte number, byte dots); void setDisplayToBinNumber(byte number, byte dots);
/** Set a single display at pos (starting at 0) to a digit (left to right) */ /** Set a single display at pos (starting at 0) to a digit (left to right) */
void setDisplayDigit(byte digit, byte pos, boolean dot); void setDisplayDigit(byte digit, byte pos, boolean dot);
/** Clear a single display at pos (starting at 0, left to right) */
void clearDisplayDigit(byte pos, boolean dot);
/** Set the display to the 8 values (left to right) */ /** Set the display to the 8 values (left to right) */
void setDisplay(const byte values[]); void setDisplay(const byte values[]);
/** Clear the display */ /** Clear the display */
@@ -72,4 +74,3 @@ class TM1638
}; };
#endif #endif