AceSegment
0.8.0
A framework for rendering seven segment LED displays using the TM1637, MAX7219, HT16K33, or 74HC595 controller chips
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The ClockWriter writes "hh:mm" and "yyyy" to the LedModule. More...
#include <ClockWriter.h>
Public Types | |
using | hexchar_t = NumberWriter::hexchar_t |
Public Member Functions | |
ClockWriter (LedModule &ledModule, uint8_t colonDigit=1) | |
Constructor. More... | |
LedModule & | ledModule () |
Get the underlying LedModule. | |
void | writeCharAt (uint8_t pos, hexchar_t c) |
Write the hexchar_t 'c' at 'pos'. | |
void | writeChars2At (uint8_t pos, hexchar_t c0, hexchar_t c1) |
Write the 2 hexchar_t 'c0' and 'c1' at 'pos' and 'pos+1'. More... | |
void | writeBcd2At (uint8_t pos, uint8_t bcd) |
Write a 2-digit BCD number at position, which involves just printing the number as a hexadecimal number. More... | |
void | writeDec2At (uint8_t pos, uint8_t d) |
Write a 2-digit decimal number at position digit, right justified. More... | |
void | writeDec4At (uint8_t pos, uint16_t dd) |
Write the 4 digit decimal number at pos, right justified, padded with a '0' character. More... | |
void | writeHourMinute (uint8_t hh, uint8_t mm) |
Write the hour and minutes, and the colon in one-shot, assuming the LED module is a 4-digit clock module. More... | |
void | writeColon (bool state=true) |
Write the colon symbol between 'hh' and 'mm'. More... | |
void | clear () |
Clear the entire display. | |
void | clearToEnd (uint8_t pos) |
Clear the display from pos to the end. | |
Static Public Attributes | |
static const hexchar_t | kCharSpace = NumberWriter::kCharSpace |
Blank digit. | |
static const hexchar_t | kCharMinus = NumberWriter::kCharMinus |
A minus ("-") sign. | |
static const uint8_t | kPatternA = 0b01110111 |
The "A" character for "AM". | |
static const uint8_t | kPatternP = 0b01110011 |
The "P" character for "PM". | |
The ClockWriter writes "hh:mm" and "yyyy" to the LedModule.
A few other characters are supported.
Definition at line 37 of file ClockWriter.h.
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inlineexplicit |
Constructor.
ledModule | instance of LedModule |
colonDigit | The digit which has the colon (":") character, mapped to bit 7 (i.e. 'H' segment). In many 4-digit LED clock display modules, this is digit 1 (counting from the left, 0-based, so the second digit from the left). |
Definition at line 62 of file ClockWriter.h.
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inline |
Write a 2-digit BCD number at position, which involves just printing the number as a hexadecimal number.
For example, 0x12 is printed as "12", but 0x1A is printed as "1 ".
Definition at line 93 of file ClockWriter.h.
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inline |
Write the 2 hexchar_t 'c0' and 'c1' at 'pos' and 'pos+1'.
This is a convenience method because the need to write 2 digits (or 2 spaces) occurs quite frequently when implementing clocks.
Definition at line 83 of file ClockWriter.h.
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inline |
Write the colon symbol between 'hh' and 'mm'.
state | Set to false to turn off the colon. |
Definition at line 141 of file ClockWriter.h.
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inline |
Write a 2-digit decimal number at position digit, right justified.
If the number is greater than 100, then print " " (2 spaces). Useful for day, hour, minute, seconds.
Definition at line 106 of file ClockWriter.h.
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inline |
Write the 4 digit decimal number at pos, right justified, padded with a '0' character.
Useful for year.
Definition at line 119 of file ClockWriter.h.
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inline |
Write the hour and minutes, and the colon in one-shot, assuming the LED module is a 4-digit clock module.
This is a convenience function.
Definition at line 130 of file ClockWriter.h.