mirror of
https://github.com/PaulStoffregen/Tlc5940
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64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/*
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Setting grayscale from progmem to save RAM. If you want to play
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multiple "frames", (an animation), see the BasicAnimations Example.
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See the BasicUse example for hardware setup.
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Alex Leone <acleone ~AT~ gmail.com>, 2009-02-03 */
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#include "Tlc5940.h"
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// Extended functions (they start with tlc_...) require another include
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#include "tlc_progmem_utils.h"
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/*
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This is an array in program memory. Program memory is 16kB instead of
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1024 bytes for regular variables in SRAM.
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The format for this array is
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GS_DUO(OUT15, OUT14), ... GS_DUO(OUT1, OUT0)
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If you have more than one TLC, the format is
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GS_DUO(TLC2.OUT15, TLC2.OUT14), ... GS_DUO(TLC2.OUT1, TLC2.OUT0),
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GS_DUO(TLC1.OUT15, TLC1.OUT14), ... GS_DUO(TLC1.OUT1, TLC1.OUT0)
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The pattern below will only work with 1 TLC. Copy + Paste the 4 lines
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inside the curly brackets for each additional TLC. */
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const unsigned int TlcMax = 4095;
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const uint8_t gsArray1[NUM_TLCS * 24] PROGMEM = {
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GS_DUO((TlcMax * 16)/16, (TlcMax * 15)/16), GS_DUO((TlcMax * 14)/16, (TlcMax * 13)/16),
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GS_DUO((TlcMax * 12)/16, (TlcMax * 11)/16), GS_DUO((TlcMax * 10)/16, (TlcMax * 9)/16),
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GS_DUO((TlcMax * 8)/16, (TlcMax * 7)/16), GS_DUO((TlcMax * 6)/16, (TlcMax * 5)/16),
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GS_DUO((TlcMax * 4)/16, (TlcMax * 3)/16), GS_DUO((TlcMax * 2)/16, (TlcMax * 1)/16),
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};
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void setup()
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{
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Tlc.init();
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}
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void loop()
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{
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// Display the pattern (brightness ramp over the outputs)
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tlc_setGSfromProgmem(gsArray1);
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Tlc.update();
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// Fade each channel to zero
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for (TLC_CHANNEL_TYPE channel = 0; channel < NUM_TLCS * 16; channel++) {
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int16_t initialValue = Tlc.get(channel);
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while (initialValue > 0) {
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initialValue -= 5;
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if (initialValue < 0) {
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initialValue = 0;
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}
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Tlc.set(channel, initialValue);
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// wait until the data has been sent to the TLCs before continuing
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while (Tlc.update());
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}
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}
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}
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