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0.3.9 TM1637_RT
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Rob Tillaart
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@ -6,6 +6,17 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
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and this project adheres to [Semantic Versioning](http://semver.org/).
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## [0.3.9] - 2023-11-22
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- update readme.md
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- section about hardware performance (Kudos to SteveMicroCode #29)
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- badges to platformIO + issues
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- improve related section
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- update keywords.txt
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- **keyScan()** replaces keyscan() => prefer camelCase (prep 0.4.0)
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- patched examples.
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- minor edits
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## [0.3.8] - 2023-07-15
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- fix #27
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- replaced function data\[8] with a class level data\[8].
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@ -17,12 +28,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
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- fix bug in **displayRaw()** (add bool hasPoint).
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- update readme.md
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## [0.3.7] - 2023-04-17
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- move code from .h to .cpp
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- add **displayTwoInt(int ll, int rr, bool colon = true)**
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- add **displayCelsius(int temp, bool colon = false)**
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- add '°' degree character (18)
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- add '°' degree character (18)
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- add examples
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- update readme.md
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@ -1,8 +1,12 @@
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[](https://github.com/marketplace/actions/arduino_ci)
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[](https://github.com/marketplace/actions/arduino_ci)
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[](https://github.com/RobTillaart/TM1637_RT/actions/workflows/arduino-lint.yml)
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[](https://github.com/RobTillaart/TM1637_RT/actions/workflows/jsoncheck.yml)
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[](https://github.com/RobTillaart/TM1637_RT/issues)
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[](https://github.com/RobTillaart/TM1637_RT/blob/master/LICENSE)
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[](https://github.com/RobTillaart/TM1637_RT/releases)
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[](https://registry.platformio.org/libraries/robtillaart/TM1637_RT)
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# TM1637
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@ -14,7 +18,9 @@ Library for TM1637 driven displays and key scans.
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The TM1637 drives 7 segment displays and can also scan a 16 key keyboard.
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Library is tested with Arduino UNO and a 6 digits display and 4 digit (clock) display.
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The library is mainly tested with Arduino UNO, both a 6 digits display and 4 digit (clock) display.
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The TM1637 can scan max 2 rows and 8 columns or a smaller keyboard.
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It is therefore not possible to scan a "standard" 3x4 or 4x4 matrix keypad.
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ESP32 is supported since 0.2.0 see https://github.com/RobTillaart/TM1637_RT/pull/5
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@ -22,6 +28,37 @@ ESP32 is supported since 0.2.0 see https://github.com/RobTillaart/TM1637_RT/pull
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#### Related
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- https://docs.wokwi.com/parts/wokwi-tm1637-7segment#simulator-examples
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- https://github.com/SteveMicroCode/PIC-TM1637-Library-CodeOn
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- includes interesting hardware notes.
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- https://github.com/RobTillaart/HT16K33
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- https://github.com/RobTillaart/AnalogKeypad
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- https://github.com/RobTillaart/I2CKeyPad
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- https://github.com/RobTillaart/I2CKeyPad8x8
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#### Hardware connection and performance
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From tests of SteveMicroCode (See #29) it became clear that the proposed hardware in the
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datasheet is very robust but slow. See page 8 datasheet.
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Leaving out the 100 pF capacitors on the CLK and DIO line, or dimension them smaller,
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allows for faster communication and thus more efficient CPU use.
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More about his tests see - https://github.com/SteveMicroCode/PIC-TM1637-Library-CodeOn
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Additional tests of wfdudley (See Keyboard Scanner section) shows that reducing
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the pull up resistor from 10 KΩ to 1000 Ω improves the signal quality.
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This too allows for faster communication and efficient CPU use.
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Datasheet page 3: _and the clock frequency should be less than 250K_ (KHz)
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This implies that the **setBitDelay()** could be set much lower than the default 10 micro
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seconds of the library. On "slower" platforms it might even be 0.
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However it is always important to do your own tests if you want to tweak performance
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beyond the specifications of the datasheet.
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Interference from other electronic components is often nearby, and if you need longer
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cables consider shielded ones.
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If you have additional performance tweaks, please let me know.
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Note: Ω = ALT-234
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## Interface
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@ -78,13 +115,17 @@ Applications include:
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- meters + centimetre MM:CC (e.g distance sensor)
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- feet + inches FF:II
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- any pair of integers (-9 .. 99) side by side.
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#### Display functions III
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- **void displayCelsius(int temp, bool colon = false)** print temperature in **Celsius** format.
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The function allows a range from -9 .. 99 + °C.
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The function allows a range from -9 .. 99 + °C.
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The colon is default false.
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Works only on a 4 digit display.
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Colon can be used e.g. to indicate under- or overflow, or any other threshold.
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- **void displayFahrenheit(int temp, bool colon = false)** print temperature in **Fahrenheit** format.
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The function allows a range from -9 .. 99 + °F.
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The function allows a range from -9 .. 99 + °F.
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The colon is default false.
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Works only on a 4 digit display.
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Colon can be used e.g. to indicate under- or overflow, or any other threshold.
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@ -93,16 +134,19 @@ Colon can be used e.g. to indicate under- or overflow, or any other threshold.
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TM.displayCelsius(temperature, (temperature < -9) || (temperature > 99));
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```
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##### Notes on temperature
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Note that the effective range of Celsius and Fahrenheit differs.
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When Fahrenheit goes from -9 to 99 Celsius goes from -26 to 37 (etc).
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Note that the effective range of C and F differs
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| F | C | F | C |
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|:-----:|:-----:|:-----:|:-----:|
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| -9 | -26 | 16 | -9 |
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| 99 | 37 | 210 | 99 |
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| F | C | | C | F |
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|:-----:|:-----:|:----:|:-----:|:-----:|
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| -9 | -26 | | -9 | 16 |
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| 99 | 37 | | 99 | 210 |
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Need to think about a 3 digit temperature to extend the range -99 .. 999
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or to have one decimal.
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A three digit temperature, e.g. range -99 .. 999, or -9.9 .. 99.9 would be possible.
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Then one has to leave out either the ° character or the C/F.
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As the C/F is far more informative, the choice is fairly easy.
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Question is how to API should change, new function of new behaviour?
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See future.
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#### Brightness
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@ -113,8 +157,8 @@ or to have one decimal.
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#### KeyScan
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- **uint8_t keyscan(void)** scans the keyboard once and return result.
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The keyscan() function cannot detect multiple keys.
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- **uint8_t keyScan(void)** scans the keyboard once and return result.
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The keyScan() function cannot detect multiple keys.
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#### DisplayRaw explained
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@ -203,10 +247,13 @@ when the library is used with an ESP32. The function called there **nanoDelay(n)
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needs manual adjustment depending upon processor frequency and time needed for a digitalWrite.
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Feel free to file an issue to get your processor supported.
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----
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## Keyboard Scanner usage and notes
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Calling **keyscan()** returns a uint8_t, whose value is 0xff if no keys are being pressed at the time.
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- Kudos to wfdudley for this section - See #11
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Calling **keyScan()** returns a uint8_t, whose value is 0xff if no keys are being pressed at the time.
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The TM1637 can only see one key press at a time, and there is no "rollover".
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If a key is pressed, then the values are as follows:
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@ -214,7 +261,7 @@ If a key is pressed, then the values are as follows:
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<TABLE>
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<TR>
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<TD colspan = 10 align="center">
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keyscan results are reversed left for right from the data sheet.
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keyScan results are reversed left for right from the data sheet.
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</TD>
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</TR>
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<TR>
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@ -231,41 +278,69 @@ If a key is pressed, then the values are as follows:
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</TR>
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</TABLE>
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</CENTER>
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<P>
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To modify a "generic" TM1637 board for use with a keyboard, you must add connections to either or both of pins 19 and 20 (these are the "row" selects) and then to as many of pins 2 through 9 (the "columns") as needed. It is easiest to connect to the "column pins" (2-9) by picking them up where they connect to the LED displays (see second photo). Generic keyboards that are a 4x4 matrix won't work; the TM1637 can only scan a 2x8 matrix. Of course, fewer keys are acceptable; I use a 1x4 keyboard in my projects.
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</P>
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<P>
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Further, the TM1637 chip needs a fairly hefty pull-up on the DIO pin for the keyscan() routine to work. There is no pull-up in the TM1637 itself, and the clone boards don't seem to have one either, despite the data sheet calling for 10K ohms pull-ups on DIO and CLOCK. 10K is too weak anyway. The slow rise-time of the DIO signal means that the "true/high" value isn't reached fast enough and reliably enough for the processor to read it correctly. The new pull-up reduces the rise time of the signal, so that true/high values are achieved in a few microseconds. I find that a 1K (1000) ohm resistor from DIO to 3.3 v works well. This is perfect with a 3.3 volt processor like the ESP8266 or ESP32, and a 5V Atmega 328 ("Arduino UNO") family processor is happy with that as well.
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</P>
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<P>
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The TM1637 boards want to be run off of 5 volts, regardless of what the processor voltage is. Their logic levels are compatible with 3.3 volt processors, and they need 5 volts to make sure the LEDs light up.
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</P>
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The unmodified generic TM1637 board (front and back).</br>
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To modify a "generic" TM1637 board for use with a keyboard, you must add connections to either
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or both of pins 19 and 20 (these are the "row" selects) and then to as many of pins 2 through 9
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(the "columns") as needed. It is easiest to connect to the "column pins" (2-9) by picking them
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up where they connect to the LED displays (see second photo).
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Generic keyboards that are a 4x4 matrix won't work; the TM1637 can only scan a 2x8 matrix.
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Of course, fewer keys are acceptable; I use a 1x4 keyboard in my projects.
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Further, the TM1637 chip needs a fairly hefty pull-up on the DIO pin for the keyScan() routine to work.
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There is no pull-up in the TM1637 itself, and the clone boards don't seem to have one either,
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despite the data sheet calling for 10K ohms pull-ups on DIO and CLOCK. 10K is too weak anyway.
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The slow rise-time of the DIO signal means that the "true/high" value isn't reached fast enough and
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reliably enough for the processor to read it correctly. The new pull-up reduces the rise time of the signal,
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so that true/high values are achieved in a few microseconds.
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I find that a 1K (1000) ohm resistor from DIO to 3.3 v works well. This is perfect with a 3.3 volt processor
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like the ESP8266 or ESP32, and a 5V Atmega 328 ("Arduino UNO") family processor is happy with that as well.
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The TM1637 boards want to be run off of 5 volts, regardless of what the processor voltage is.
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Their logic levels are compatible with 3.3 volt processors, and they need 5 volts to make sure the LEDs light up.
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The unmodified generic TM1637 board (front and back).
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<IMG src="images/unmodified.jpg">
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</br>
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The modified generic TM1637 board with connector for 1x4 keyboard. The blue wire is bringing out pin 19 (k1). Four segments/columns are picked up from the LEDs.</br>
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The modified generic TM1637 board with connector for 1x4 keyboard.
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The blue wire is bringing out pin 19 (k1).
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Four segments/columns are picked up from the LEDs.
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<IMG src="images/modified.jpg">
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</br>
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The 4 button keyboard plugged into the TM1637 board.</br>
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<IMG src="images/disp_plus_kbd.jpg"></br>
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</br>
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Scope photo showing slow rise time of DIO pin (upper trace) on the unmodified TM1637. The lower trace is the CLK. The 8 fast CLK pulses on the left represent the 0x42 command to read keyboard being sent to the TM1637.</br>
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<IMG src="images/slow_rise.jpg"></br>
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</br>
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Scope photo showing faster rise time of DIO pin (upper trace) with 1000 ohm pull-up on DIO. In both scope photos, the F5 key is pressed; the bits are least significant bit (LSB) first, so read as 10101111 left to right.</br>
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<IMG src="images/fast_rise.jpg"></br>
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The scope photos were taken using the TM1637_keyscan_raw example, with the scope trigger hooked to the TRIGGER pin, and the two channel probes hooked to DIO and CLK. Vertical sensitivity is 2v/division, horizontal timebase is 20usec/division.
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The 4 button keyboard plugged into the TM1637 board.
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<IMG src="images/disp_plus_kbd.jpg">
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## Keyscan
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Scope photo showing slow rise time of DIO pin (upper trace) on the unmodified TM1637.
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The lower trace is the CLK. The 8 fast CLK pulses on the left represent the 0x42 command
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to read keyboard being sent to the TM1637.
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<IMG src="images/slow_rise.jpg">
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Scope photo showing faster rise time of DIO pin (upper trace) with 1000 ohm pull-up on DIO.
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In both scope photos, the F5 key is pressed; the bits are least significant bit (LSB) first,
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so read as 10101111 left to right.
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<IMG src="images/fast_rise.jpg">
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The scope photos were taken using the TM1637_keyscan_raw example, with the scope trigger
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hooked to the TRIGGER pin, and the two channel probes hooked to DIO and CLK.
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Vertical sensitivity is 2v/division, horizontal timebase is 20usec/division.
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## KeyScan
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Implemented in version 0.3.0 Please read the datasheet to understand the limitations.
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```
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// NOTE:
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// on the TM1637 boards tested by @wfdudley, keyscan() works well
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// if you add a 910 ohm or 1 Kohm pull-up resistor from DIO to 3.3v
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// on the TM1637 boards tested by @wfdudley, keyScan() works well
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// if you add a 910 ohm or 1000 ohm pull-up resistor from DIO to 3.3v
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// This reduces the rise time of the DIO signal when reading the key info.
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// If one only uses the pull-up inside the microcontroller,
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// the rise time is too long for the data to be read reliably.
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@ -283,32 +358,34 @@ See examples
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- (0.4.0)
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- remove obsolete **init()** from code
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- remove keyscan() => keyScan()
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- **setLeadingZeros(bool on = false)** leading zeros flag, set data array to 0.
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- **getLeadingZeros()**
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#### Should
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- testing other platforms.
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- refactor readme.md
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- remove degree sign from **displayCelsius()** ?
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- remove degree sign from **displayCelsius()**
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- would allow one extra digit.
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- **displayFahrenheit()** idem.
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- could be optional when needed e.g. below -9 or above 99
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#### Could
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- **keyScan()** camelCase ?
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- add parameter for **hideSegement(idx, character == SPACE)** to overrule hide char.
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- space underscore or - are possible.
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- add **TM1637_UNDERSCORE** to char set. ```seg[19] == 0x08```
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- add **TM1637_UPPERSCORE** to char set. ```seg[20] == 0x01```
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- return bytes written as return value for display functions.
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- like print(); or write();
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- **void displayHumidity(int hum, bool colon = false)** print humidity in **percent** format.
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The function allows a range from 0.00H .. 99.9H or 00.0H ?
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Colon to indicate rising / falling ????
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- generic function that displays three digits and one char ACDEFH ???
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- common for celsius and fahrenheit and humidity?
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- common for Celsius and Fahrenheit and Humidity?
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- **void displayAmpere(float amps)** Ampere 0.00 - 999 A
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#### Wont (unless requested)
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@ -328,8 +405,16 @@ Colon to indicate rising / falling ????
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- is now commented code, good enough + dumpcache()
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- extend some functions to 6 digit display too?
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- time(hh.mm.ss)
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- Celsius (nn.nn°C)
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- Celsius (nn.nn°C)
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- twoInt => threeInt
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- on request only
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## Support
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If you appreciate my libraries, you can support the development and maintenance.
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Improve the quality of the libraries by providing issues and Pull Requests, or
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donate through PayPal or GitHub sponsors.
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Thank you,
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@ -2,12 +2,12 @@
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// FILE: TM1637.cpp
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// AUTHOR: Rob Tillaart
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// DATE: 2019-10-28
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// VERSION: 0.3.8
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// VERSION: 0.3.9
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// PURPOSE: TM1637 library for Arduino
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// URL: https://github.com/RobTillaart/TM1637_RT
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// NOTE:
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// on the inexpensive TM1637 boards @wfdudley has used, keyscan
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// on the inexpensive TM1637 boards @wfdudley has used, keyScan
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// works if you add a 1000 ohm pull-up resistor from DIO to 3.3v
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// This reduces the rise time of the DIO signal when reading the key info.
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// If one only uses the pull-up inside the microcontroller,
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@ -54,7 +54,7 @@
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static uint8_t seg[] =
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{
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0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f, // 0 - 9
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0x77, 0x7c, 0x39, 0x5e, 0x79, 0x71, 0x00, 0x40, 0x63 // A - F, ' ', '-', '°'
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0x77, 0x7c, 0x39, 0x5e, 0x79, 0x71, 0x00, 0x40, 0x63 // A - F, ' ', '-', '°'
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};
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@ -99,7 +99,7 @@ void TM1637::begin(uint8_t clockPin, uint8_t dataPin, uint8_t digits)
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{
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setDigitOrder(3, 2, 1, 0);
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}
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else // (_digits == 6 ) // default
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else // (_digits == 6 ) // default
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{
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setDigitOrder(3, 4, 5, 0, 1, 2);
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}
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@ -181,7 +181,7 @@ void TM1637::displayFloat(float value, uint8_t fixedPoint)
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last--;
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}
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// v += 0.0001; // Bug fix for 12.999 <> 13.000
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v += 0.001; // Bug fix for 12.99 <> 13.00
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v += 0.001; // Bug fix for 12.99 <> 13.00
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while (v >= 10)
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{
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@ -276,7 +276,7 @@ void TM1637::displayCelsius(int temp, bool colon)
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if (_digits != 4) return;
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for (int i = 0; i < 8; i++) _data[i] = TM1637_SPACE; // 16
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_data[0] = 12; // C
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_data[1] = TM1637_DEGREE; // ° degreee sign
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_data[1] = TM1637_DEGREE; // ° degree sign
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if (temp < -9) temp = -9;
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if (temp > 99) temp = 99;
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@ -299,7 +299,7 @@ void TM1637::displayFahrenheit(int temp, bool colon)
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if (_digits != 4) return;
|
||||
for (int i = 0; i < 8; i++) _data[i] = TM1637_SPACE; // 16
|
||||
_data[0] = 15; // F
|
||||
_data[1] = TM1637_DEGREE; // ° degreee sign
|
||||
_data[1] = TM1637_DEGREE; // ° degree sign
|
||||
|
||||
if (temp < -9) temp = -9;
|
||||
if (temp > 99) temp = 99;
|
||||
@ -539,15 +539,15 @@ void TM1637::writeSync(uint8_t pin, uint8_t val)
|
||||
}
|
||||
|
||||
|
||||
// keyscan results are reversed left for right from the data sheet.
|
||||
// here are the values returned by keyscan():
|
||||
// keyScan results are reversed left for right from the data sheet.
|
||||
// here are the values returned by keyScan():
|
||||
//
|
||||
// pin 2 3 4 5 6 7 8 9
|
||||
// sg1 sg2 sg3 sg4 sg5 sg6 sg7 sg8
|
||||
// 19 k1 0xf7 0xf6 0xf5 0xf4 0xf3 0xf2 0xf1 0xf0
|
||||
// 20 k2 0xef 0xee 0xed 0xec 0xeb 0xea 0xe9 0xe8
|
||||
|
||||
uint8_t TM1637::keyscan(void)
|
||||
uint8_t TM1637::keyScan(void)
|
||||
{
|
||||
uint8_t halfDelay = _bitDelay >> 1;
|
||||
uint8_t key;
|
||||
|
||||
@ -3,10 +3,16 @@
|
||||
// FILE: TM1637.h
|
||||
// AUTHOR: Rob Tillaart
|
||||
// DATE: 2019-10-28
|
||||
// VERSION: 0.3.8
|
||||
// VERSION: 0.3.9
|
||||
// PUPROSE: TM1637 library for Arduino
|
||||
// URL: https://github.com/RobTillaart/TM1637_RT
|
||||
|
||||
// NOTE:
|
||||
// on the inexpensive TM1637 boards @wfdudley has used, keyScan
|
||||
// works if you add a 1000 ohm pull-up resistor from DIO to 3.3v
|
||||
// This reduces the rise time of the DIO signal when reading the key info.
|
||||
// If one only uses the pull-up inside the microcontroller,
|
||||
// the rise time is too long for the data to be read reliably.
|
||||
|
||||
// tested on 6 digit display
|
||||
// tested on 4 digit (clock) display esp. displayTime()
|
||||
@ -14,7 +20,7 @@
|
||||
|
||||
#include "Arduino.h"
|
||||
|
||||
#define TM1637_LIB_VERSION (F("0.3.8"))
|
||||
#define TM1637_LIB_VERSION (F("0.3.9"))
|
||||
|
||||
|
||||
class TM1637
|
||||
@ -38,9 +44,9 @@ public:
|
||||
// next 3 only tested on 4 digit display with colon
|
||||
void displayTime(uint8_t hh, uint8_t mm, bool colon);
|
||||
void displayTwoInt(int ll, int rr, bool colon = true);
|
||||
// Celsius -9..99°C
|
||||
// Celsius -9..99°C
|
||||
void displayCelsius(int temp, bool colon = false);
|
||||
// Fahrenheit -9..99°F
|
||||
// Fahrenheit -9..99°F
|
||||
void displayFahrenheit(int temp, bool colon = false);
|
||||
|
||||
|
||||
@ -49,7 +55,7 @@ public:
|
||||
void displayRefresh();
|
||||
// EXPERIMENTAL 0.3.8
|
||||
void hideSegment(uint8_t idx);
|
||||
void hideMultiSegment(uint8_t mask); // 0 bit = show 1 bit = hide
|
||||
void hideMultiSegment(uint8_t mask); // 0 bit = show 1 bit = hide
|
||||
|
||||
|
||||
// BRIGHTNESS
|
||||
@ -65,7 +71,7 @@ public:
|
||||
|
||||
|
||||
// KEY SCAN
|
||||
uint8_t keyscan(void);
|
||||
uint8_t keyScan(void);
|
||||
|
||||
|
||||
// CONFIGURATION
|
||||
@ -77,14 +83,19 @@ public:
|
||||
uint8_t g = 6, uint8_t h = 7);
|
||||
|
||||
|
||||
// OBSOLETE
|
||||
// init will be replaced by begin() in the future (0.4.0)
|
||||
void init(uint8_t clockPin, uint8_t dataPin, uint8_t digits = 6);
|
||||
|
||||
// DEBUG only
|
||||
void dumpCache();
|
||||
|
||||
|
||||
// OBSOLETE
|
||||
// init() => begin() in 0.4.0
|
||||
[[deprecated("Use begin() instead")]]
|
||||
void init(uint8_t clockPin, uint8_t dataPin, uint8_t digits = 6);
|
||||
// keyscan() => keyScan() in 0.4.0
|
||||
[[deprecated("Use keyScan() instead => camelCase!")]]
|
||||
uint8_t keyscan(void) { return keyScan(); };
|
||||
|
||||
|
||||
private:
|
||||
uint8_t _clockPin = -1;
|
||||
uint8_t _dataPin = -1;
|
||||
@ -104,7 +115,7 @@ private:
|
||||
void writeSync(uint8_t pin, uint8_t val);
|
||||
void nanoDelay(uint16_t n);
|
||||
|
||||
// Override in your own derived class for custom character translation
|
||||
// Override in your own derived class for custom character translation
|
||||
virtual uint8_t asciiTo7Segment ( char c ) ;
|
||||
};
|
||||
|
||||
|
||||
@ -43,7 +43,7 @@ void test()
|
||||
start = millis();
|
||||
for (int i = 0; i < 1000; i++)
|
||||
{
|
||||
TM.displayHex(val); // there is loop overhead etc
|
||||
TM.displayHex(val); // there is loop overhead etc
|
||||
val++;
|
||||
}
|
||||
stop = millis();
|
||||
@ -65,5 +65,5 @@ void test()
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
@ -36,10 +36,10 @@ void ascii_to_7segment(char *buff, uint8_t *data) {
|
||||
data[j--] = buff[i] - 'g' + 18;
|
||||
}
|
||||
else if(buff[i] == '.') {
|
||||
data[j+1] |= 0x80; // decimal point on previous digit
|
||||
data[j+1] |= 0x80; // decimal point on previous digit
|
||||
}
|
||||
else {
|
||||
data[j--] = 0x10; // blank
|
||||
data[j--] = 0x10; // blank
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -59,5 +59,5 @@ uint8_t data[10];
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
@ -49,9 +49,9 @@ void setup()
|
||||
// left as exercise for the programmer ;)
|
||||
void loop()
|
||||
{
|
||||
uint32_t now = millis() % 100000; // 0 - 99999
|
||||
float value = now * 0.001; // 0 - 99.999
|
||||
if (value - int(value) < 0.5) value *= 100; // for blink :
|
||||
uint32_t now = millis() % 100000; // 0 - 99999
|
||||
float value = now * 0.001; // 0 - 99.999
|
||||
if (value - int(value) < 0.5) value *= 100; // for blink :
|
||||
TM.displayFloat(value);
|
||||
}
|
||||
|
||||
@ -65,5 +65,5 @@ void loop2()
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
@ -7,7 +7,7 @@
|
||||
// URL: https://github.com/radionerd
|
||||
|
||||
// Demonstration of how to display char *buff and override the TM1637 library asciiTo7Segment virtual function
|
||||
// to create a custom 7 segment character set.
|
||||
// to create a custom 7 segment character set.
|
||||
// The letter 'A' becomes swapped with @ in this trivial example
|
||||
// Status: Experimental. Tested on STM32F103C8T6 Blue Pill and Arduino Nano only
|
||||
|
||||
@ -23,15 +23,15 @@ const int DISPLAY_DIGITS_6 = 6;
|
||||
class myTM1637 : TM1637 {
|
||||
public:
|
||||
void setBrightness(uint8_t b) { TM1637::setBrightness(b);};
|
||||
|
||||
|
||||
void begin(uint8_t clockPin, uint8_t dataPin, uint8_t digits = 6) {TM1637::begin(clockPin,dataPin,digits);};
|
||||
|
||||
void displayPChar( char * data ) {
|
||||
TM1637::displayPChar( &data[0] ); // Call the base class
|
||||
Serial.println(data); // Copy display output to the serial port
|
||||
|
||||
void displayPChar( char * data ) {
|
||||
TM1637::displayPChar( &data[0] ); // Call the base class
|
||||
Serial.println(data); // Copy display output to the serial port
|
||||
};
|
||||
|
||||
uint8_t asciiTo7Segment ( char c ) { // Override library ascii to 7 segment conversion
|
||||
|
||||
uint8_t asciiTo7Segment ( char c ) { // Override library ascii to 7 segment conversion
|
||||
|
||||
// -01-
|
||||
// 20 | | 02
|
||||
@ -40,15 +40,15 @@ class myTM1637 : TM1637 {
|
||||
// -08- .80
|
||||
|
||||
//7+1 Segment patterns for ASCII 0x30-0x5F
|
||||
const uint8_t asciiTo8Segment[] = {
|
||||
0x00,0x86,0x22,0x7f, 0x6d,0x52,0x7d,0x02, // !"# $%&'
|
||||
0x39,0x0f,0x7f,0x46, 0x80,0x40,0x80,0x52, // ()*+ ,-./
|
||||
0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, // 0123 4567
|
||||
0x7f,0x6f,0x09,0x89, 0x58,0x48,0x4c,0xD3, // 89:; <=>?
|
||||
0x77,0x5f,0x7c,0x39, 0x5E,0x79,0x71,0x3d, // @aBC DEFG NB: @ <-> A in this derived class
|
||||
0x74,0x06,0x0E,0x75, 0x38,0x37,0x54,0x5c, // HIJK LMNO
|
||||
0x73,0x67,0x50,0x6D, 0x78,0x3E,0x1C,0x9c, // PQRS TUVW
|
||||
0x76,0x6E,0x5B,0x39, 0x52,0x0F,0x23,0x08 // XYZ[ /]^_
|
||||
const uint8_t asciiTo8Segment[] = {
|
||||
0x00,0x86,0x22,0x7f, 0x6d,0x52,0x7d,0x02, // !"# $%&'
|
||||
0x39,0x0f,0x7f,0x46, 0x80,0x40,0x80,0x52, // ()*+ ,-./
|
||||
0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, // 0123 4567
|
||||
0x7f,0x6f,0x09,0x89, 0x58,0x48,0x4c,0xD3, // 89:; <=>?
|
||||
0x77,0x5f,0x7c,0x39, 0x5E,0x79,0x71,0x3d, // @aBC DEFG NB: @ <-> A in this derived class
|
||||
0x74,0x06,0x0E,0x75, 0x38,0x37,0x54,0x5c, // HIJK LMNO
|
||||
0x73,0x67,0x50,0x6D, 0x78,0x3E,0x1C,0x9c, // PQRS TUVW
|
||||
0x76,0x6E,0x5B,0x39, 0x52,0x0F,0x23,0x08 // XYZ[ /]^_
|
||||
};
|
||||
|
||||
uint8_t segments = c &0x80;
|
||||
@ -69,12 +69,12 @@ void setup()
|
||||
delay(1000);
|
||||
Serial.println(__FILE__);
|
||||
|
||||
// set clockpin, datapin to your own board pin names
|
||||
// e.g. myTM.begin(PB8, PB9 , DISPLAY_DIGITS_6 );
|
||||
myTM.begin( 14, 15 , DISPLAY_DIGITS_6 ); // clockpin, datapin, and digits
|
||||
// set clockpin, datapin to your own board pin names
|
||||
// e.g. myTM.begin(PB8, PB9 , DISPLAY_DIGITS_6 );
|
||||
myTM.begin( 14, 15 , DISPLAY_DIGITS_6 ); // clockpin, datapin, and digits
|
||||
|
||||
myTM.setBrightness(2);
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
@ -82,12 +82,12 @@ void loop()
|
||||
{
|
||||
char buff[20];
|
||||
static int seconds;
|
||||
// Show A and @ swapped over on custom character set
|
||||
// Compare the 7 segment display with the text shown on the serial monitor
|
||||
// Show A and @ swapped over on custom character set
|
||||
// Compare the 7 segment display with the text shown on the serial monitor
|
||||
sprintf(buff,"@-A%3d", seconds++%100 );
|
||||
myTM.displayPChar(buff); // send buffer to display and serial port
|
||||
myTM.displayPChar(buff); // send buffer to display and serial port
|
||||
delay(1000);
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
@ -36,4 +36,4 @@ void loop()
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
@ -43,4 +43,4 @@ void loop()
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
@ -24,11 +24,11 @@ void setup()
|
||||
TM.displayFloat(1.42425);
|
||||
// TM.dumpCache();
|
||||
delay(2000);
|
||||
|
||||
|
||||
TM.displayFloat(-1.42425);
|
||||
// TM.dumpCache();
|
||||
delay(2000);
|
||||
|
||||
|
||||
TM.displayClear();
|
||||
// TM.dumpCache();
|
||||
delay(2000);
|
||||
@ -47,7 +47,7 @@ void test()
|
||||
start = millis();
|
||||
for (int i = 0; i < 1000; i++)
|
||||
{
|
||||
TM.displayFloat(f); // there is loop overhead etc
|
||||
TM.displayFloat(f); // there is loop overhead etc
|
||||
f += 1;
|
||||
}
|
||||
stop = millis();
|
||||
@ -57,5 +57,5 @@ void test()
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
@ -57,4 +57,4 @@ void loop()
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
@ -55,5 +55,5 @@ void test()
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
// FILE: TM1637_keypress_cooked.ino
|
||||
// AUTHOR: William F. Dudley Jr.
|
||||
// VERSION: 0.1.0
|
||||
// PURPOSE: demo TM1637 library - keyscan() cooked output
|
||||
// PURPOSE: demo TM1637 library - keyScan() cooked output
|
||||
// DATE: 2021-10-26
|
||||
// URL: https://github.com/RobTillaart/TM1637
|
||||
|
||||
@ -12,9 +12,9 @@
|
||||
TM1637 TM;
|
||||
|
||||
|
||||
// Note: In my experience, the TM1637 boards need a pull up
|
||||
// resistor from DIO to 3.3V for keyscan() to work. 1000 ohms
|
||||
// seems to work well, but value isn't critical.
|
||||
// Note: In my experience, the TM1637 boards need a pull up
|
||||
// resistor from DIO to 3.3V for keyScan() to work. 1000 ohms
|
||||
// seems to work well, but value isn't critical.
|
||||
|
||||
|
||||
char buff[8];
|
||||
@ -49,10 +49,11 @@ void setup()
|
||||
char button_poll(void) {
|
||||
char c;
|
||||
static unsigned long last_key_time;
|
||||
uint8_t keypress = TM.keyscan();
|
||||
uint8_t keypress = TM.keyScan();
|
||||
c = '\0';
|
||||
// TM.displayHex(keypress); // uncomment to see raw data on LED
|
||||
// Serial.print("kp "); Serial.println(keypress, HEX); // uncomment to see raw
|
||||
// TM.displayHex(keypress); // uncomment to see raw data on LED
|
||||
// Serial.print("kp "); // uncomment to see raw
|
||||
// Serial.println(keypress, HEX); // uncomment to see raw
|
||||
if(keypress < 0xfe) {
|
||||
if(last_keypress != keypress || (millis() - last_key_time) > 500) {
|
||||
last_keypress = keypress;
|
||||
@ -97,10 +98,10 @@ void ascii_to_7segment(char *buff, uint8_t *data) {
|
||||
data[j--] = buff[i] - 'g' + 18;
|
||||
}
|
||||
else if(buff[i] == '.') {
|
||||
data[j+1] |= 0x80; // decimal point on previous digit
|
||||
data[j+1] |= 0x80; // decimal point on previous digit
|
||||
}
|
||||
else {
|
||||
data[j--] = 0x10; // blank
|
||||
data[j--] = 0x10; // blank
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -115,7 +116,7 @@ char c;
|
||||
buff[bptr++] = c;
|
||||
if(bptr > 5) { bptr = 0; }
|
||||
Serial.println(buff);
|
||||
// convert ASCII chars in "buff" to 7 segment representations in "data"
|
||||
// convert ASCII chars in "buff" to 7 segment representations in "data"
|
||||
ascii_to_7segment(buff, data);
|
||||
TM.displayRaw(data, -1);
|
||||
}
|
||||
@ -123,5 +124,5 @@ char c;
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
// FILE: TM1637_keypress_raw.ino
|
||||
// AUTHOR: William F. Dudley Jr.
|
||||
// VERSION: 0.1.0
|
||||
// PURPOSE: demo TM1637 library - keyscan() raw output
|
||||
// PURPOSE: demo TM1637 library - keyScan() raw output
|
||||
// DATE: 2021-10-26
|
||||
// URL: https://github.com/RobTillaart/TM1637
|
||||
|
||||
@ -11,18 +11,18 @@
|
||||
|
||||
TM1637 TM;
|
||||
|
||||
// Note: In my experience, the TM1637 boards need a pull up
|
||||
// resistor from DIO to 3.3V for keyscan() to work. 1000 ohms
|
||||
// seems to work well, but value isn't critical.
|
||||
// Note: In my experience, the TM1637 boards need a pull up
|
||||
// resistor from DIO to 3.3V for keyScan() to work. 1000 ohms
|
||||
// seems to work well, but value isn't critical.
|
||||
|
||||
// TRIGGER is scope trigger signal for development.
|
||||
// Comment out the #define if you don't need it.
|
||||
// or feel free to change to any unused pin. Hook your
|
||||
// oscilloscope or logic analyzer trigger to it.
|
||||
// This allows experimenting with the pullup resistor
|
||||
// from DIO to 3.3V. Smaller values decrease rise time
|
||||
// (a good thing) but too small and the microcontroller
|
||||
// can't pull the line down (a bad thing). Try 1000 ohms.
|
||||
// TRIGGER is scope trigger signal for development.
|
||||
// Comment out the #define if you don't need it.
|
||||
// or feel free to change to any unused pin. Hook your
|
||||
// oscilloscope or logic analyzer trigger to it.
|
||||
// This allows experimenting with the pullup resistor
|
||||
// from DIO to 3.3V. Smaller values decrease rise time
|
||||
// (a good thing) but too small and the microcontroller
|
||||
// can't pull the line down (a bad thing). Try 1000 ohms.
|
||||
|
||||
|
||||
#define dispCLOCK 3
|
||||
@ -57,7 +57,7 @@ char button_poll(void) {
|
||||
delayMicroseconds(1);
|
||||
digitalWrite(TRIGGER, LOW);
|
||||
#endif
|
||||
uint8_t keypress = TM.keyscan();
|
||||
uint8_t keypress = TM.keyScan();
|
||||
TM.displayHex(keypress);
|
||||
if(keypress < 0xfe) {
|
||||
Serial.print(F("KEYPRESS "));
|
||||
@ -72,11 +72,11 @@ void loop()
|
||||
button_poll();
|
||||
|
||||
#ifndef TRIGGER
|
||||
// for oscilloscope testing, don't delay for faster repetition rate
|
||||
// for oscilloscope testing, don't delay for faster repetition rate
|
||||
delay(50);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
@ -21,9 +21,9 @@ void setup()
|
||||
delay(1000);
|
||||
Serial.println(__FILE__);
|
||||
|
||||
// set clockpin, datapin to your own board pin names
|
||||
// e.g. myTM.begin(PB8, PB9 , DISPLAY_DIGITS_6 );
|
||||
TM.begin( 14, 15 , DISPLAY_DIGITS_6 ); // clockpin, datapin, and digits
|
||||
// set clockpin, datapin to your own board pin names
|
||||
// e.g. myTM.begin(PB8, PB9 , DISPLAY_DIGITS_6 );
|
||||
TM.begin( 14, 15 , DISPLAY_DIGITS_6 ); // clockpin, datapin, and digits
|
||||
|
||||
TM.setBrightness(2);
|
||||
|
||||
@ -35,10 +35,10 @@ void loop()
|
||||
char buff[20];
|
||||
static int seconds;
|
||||
sprintf(buff,"Sec=%02x", seconds++&0xFF );
|
||||
TM.displayPChar(buff); // send buffer to display
|
||||
Serial.println(buff); // and serial port.
|
||||
TM.displayPChar(buff); // send buffer to display
|
||||
Serial.println(buff); // and serial port.
|
||||
delay(1000);
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
// -- END OF FILE --
|
||||
|
||||
@ -25,13 +25,19 @@ displayTwoInt KEYWORD2
|
||||
displayCelsius KEYWORD2
|
||||
displayFahrenheit KEYWORD2
|
||||
|
||||
displayClear KEYWORD2
|
||||
displayRefresh KEYWORD2
|
||||
|
||||
hideSegment KEYWORD2
|
||||
hideMultiSegment KEYWORD2
|
||||
|
||||
setBrightness KEYWORD2
|
||||
getBrightness KEYWORD2
|
||||
|
||||
setBitDelay KEYWORD2
|
||||
getBitDelay KEYWORD2
|
||||
|
||||
keyscan KEYWORD2
|
||||
keyScan KEYWORD2
|
||||
|
||||
setDigitOrder KEYWORD2
|
||||
|
||||
|
||||
@ -15,9 +15,9 @@
|
||||
"type": "git",
|
||||
"url": "https://github.com/RobTillaart/TM1637_RT"
|
||||
},
|
||||
"version": "0.3.8",
|
||||
"version": "0.3.9",
|
||||
"license": "MIT",
|
||||
"frameworks": "arduino",
|
||||
"frameworks": "*",
|
||||
"platforms": "*",
|
||||
"headers": "TM1637.h"
|
||||
}
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
name=TM1637_RT
|
||||
version=0.3.8
|
||||
version=0.3.9
|
||||
author=Rob Tillaart <rob.tillaart@gmail.com>
|
||||
maintainer=Rob Tillaart <rob.tillaart@gmail.com>
|
||||
sentence=TM1637 Library for Arduino.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user