mirror of
https://github.com/deruiter/DCF77-Analyzer-Clock-V2.0.git
synced 2025-11-04 16:17:45 +01:00
MODIFIED Ledcontrol library
With this library, you can use Common ANODE displays if you want with the Maxim 72xx chips!
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228
LedControl added COMMON ANODE display support/common-anode.patch
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228
LedControl added COMMON ANODE display support/common-anode.patch
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@@ -0,0 +1,228 @@
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Common subdirectories: LedControl-unpatched/examples and LedControl/examples
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diff -u LedControl-unpatched/LedControl.cpp LedControl/LedControl.cpp
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--- LedControl-unpatched/LedControl.cpp 2008-10-14 02:21:21.000000000 -0700
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+++ LedControl/LedControl.cpp 2012-09-02 01:24:35.000000000 -0700
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@@ -35,20 +35,23 @@
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#define OP_SHUTDOWN 12
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#define OP_DISPLAYTEST 15
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-LedControl::LedControl(int dataPin, int clkPin, int csPin, int numDevices) {
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+LedControl::LedControl(int dataPin, int clkPin, int csPin, int numDevices, bool anode) {
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SPI_MOSI=dataPin;
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SPI_CLK=clkPin;
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SPI_CS=csPin;
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if(numDevices<=0 || numDevices>8 )
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numDevices=8;
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maxDevices=numDevices;
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+ anodeMode=anode;
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pinMode(SPI_MOSI,OUTPUT);
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pinMode(SPI_CLK,OUTPUT);
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pinMode(SPI_CS,OUTPUT);
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digitalWrite(SPI_CS,HIGH);
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SPI_MOSI=dataPin;
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- for(int i=0;i<64;i++)
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+ for(int i=0;i<64;i++) {
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status[i]=0x00;
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+ statusTransposed[i]=0x00;
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+ }
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for(int i=0;i<maxDevices;i++) {
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spiTransfer(i,OP_DISPLAYTEST,0);
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//scanlimit is set to max on startup
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@@ -97,7 +100,16 @@
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offset=addr*8;
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for(int i=0;i<8;i++) {
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status[offset+i]=0;
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- spiTransfer(addr, i+1,status[offset+i]);
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+ }
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+ if (anodeMode) {
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+ transposeData(addr);
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+ for(int i=0;i<8;i++) {
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+ spiTransfer(addr, i+1, statusTransposed[offset+i]);
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+ }
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+ } else {
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+ for(int i=0;i<8;i++) {
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+ spiTransfer(addr, i+1, status[offset+i]);
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+ }
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}
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}
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@@ -158,8 +170,16 @@
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if(dp)
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v|=B10000000;
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status[offset+digit]=v;
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- spiTransfer(addr, digit+1,v);
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-
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+ if (anodeMode) {
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+ //transpose the digit matrix
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+ transposeData(addr);
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+ //send the entire set of digits
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+ for(int i=0;i<8;i++) {
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+ spiTransfer(addr, i+1, statusTransposed[offset+i]);
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+ }
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+ } else {
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+ spiTransfer(addr, digit+1, v);
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+ }
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}
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void LedControl::setChar(int addr, int digit, char value, boolean dp) {
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@@ -173,14 +193,23 @@
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offset=addr*8;
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index=(byte)value;
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if(index >127) {
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- //nothing define we use the space char
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+ //nothing defined we use the space char
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value=32;
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}
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v=charTable[index];
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if(dp)
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v|=B10000000;
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status[offset+digit]=v;
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- spiTransfer(addr, digit+1,v);
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+ if (anodeMode) {
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+ //transpose the digit matrix
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+ transposeData(addr);
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+ //send the entire set of digits
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+ for(int i=0;i<8;i++) {
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+ spiTransfer(addr, i+1, statusTransposed[offset+i]);
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+ }
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+ } else {
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+ spiTransfer(addr, digit+1, v);
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+ }
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}
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void LedControl::spiTransfer(int addr, volatile byte opcode, volatile byte data) {
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@@ -202,4 +231,73 @@
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digitalWrite(SPI_CS,HIGH);
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}
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+void LedControl::transposeData(int addr) {
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+ int offset=addr*8;
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+ byte a0, a1, a2, a3, a4, a5, a6, a7,
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+ b0, b1, b2, b3, b4, b5, b6, b7;
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+
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+ // Perform a bitwise transpose operation on an 8x8 bit matrix, stored as 8-byte array.
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+ // We have to use the naive method because we're working on a 16-bit microprocessor.
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+
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+ // Load the array into eight one-byte variables.
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+ a0 = status[offset];
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+ a1 = status[offset+1];
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+ a2 = status[offset+2];
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+ a3 = status[offset+3];
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+ a4 = status[offset+4];
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+ a5 = status[offset+5];
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+ a6 = status[offset+6];
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+ a7 = status[offset+7];
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+
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+ // Magic happens. Credit goes to: http://www.hackersdelight.org/HDcode/transpose8.c.txt
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+ b0 = (a0 & 128) | (a1 & 128)/2 | (a2 & 128)/4 | (a3 & 128)/8 |
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+ (a4 & 128)/16 | (a5 & 128)/32 | (a6 & 128)/64 | (a7 )/128;
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+ b1 = (a0 & 64)*2 | (a1 & 64) | (a2 & 64)/2 | (a3 & 64)/4 |
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+ (a4 & 64)/8 | (a5 & 64)/16 | (a6 & 64)/32 | (a7 & 64)/64;
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+ b2 = (a0 & 32)*4 | (a1 & 32)*2 | (a2 & 32) | (a3 & 32)/2 |
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+ (a4 & 32)/4 | (a5 & 32)/8 | (a6 & 32)/16 | (a7 & 32)/32;
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+ b3 = (a0 & 16)*8 | (a1 & 16)*4 | (a2 & 16)*2 | (a3 & 16) |
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+ (a4 & 16)/2 | (a5 & 16)/4 | (a6 & 16)/8 | (a7 & 16)/16;
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+ b4 = (a0 & 8)*16 | (a1 & 8)*8 | (a2 & 8)*4 | (a3 & 8)*2 |
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+ (a4 & 8) | (a5 & 8)/2 | (a6 & 8)/4 | (a7 & 8)/8;
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+ b5 = (a0 & 4)*32 | (a1 & 4)*16 | (a2 & 4)*8 | (a3 & 4)*4 |
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+ (a4 & 4)*2 | (a5 & 4) | (a6 & 4)/2 | (a7 & 4)/4;
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+ b6 = (a0 & 2)*64 | (a1 & 2)*32 | (a2 & 2)*16 | (a3 & 2)*8 |
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+ (a4 & 2)*4 | (a5 & 2)*2 | (a6 & 2) | (a7 & 2)/2;
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+ b7 = (a0 )*128| (a1 & 1)*64 | (a2 & 1)*32 | (a3 & 1)*16|
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+ (a4 & 1)*8 | (a5 & 1)*4 | (a6 & 1)*2 | (a7 & 1);
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+
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+ // Assemble into output array.
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+ statusTransposed[offset] = b0;
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+ statusTransposed[offset+1] = b1;
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+ statusTransposed[offset+2] = b2;
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+ statusTransposed[offset+3] = b3;
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+ statusTransposed[offset+4] = b4;
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+ statusTransposed[offset+5] = b5;
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+ statusTransposed[offset+6] = b6;
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+ statusTransposed[offset+7] = b7;
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+
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+}
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+
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+void LedControl::setDirectDigit(int addr, int digit, byte value) {
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+ int offset;
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+
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+ if(addr<0 || addr>=maxDevices)
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+ return;
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+ if(digit<0 || digit>7)
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+ return;
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+ offset=addr*8;
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+ status[offset+digit]=value;
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+ if (anodeMode) {
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+ transposeData(addr);
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+ for(int i=0;i<8;i++) {
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+ spiTransfer(addr, i+1, statusTransposed[offset+i]);
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+ }
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+ } else {
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+ spiTransfer(addr, digit+1, value);
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+ }
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+}
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+
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+
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+
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diff -u LedControl-unpatched/LedControl.h LedControl/LedControl.h
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--- LedControl-unpatched/LedControl.h 2011-09-20 23:49:06.000000000 -0700
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+++ LedControl/LedControl.h 2012-09-02 00:18:47.000000000 -0700
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@@ -58,6 +58,8 @@
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/* We keep track of the led-status for all 8 devices in this array */
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byte status[64];
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+ /* We also keep track of the transposed version */
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+ byte statusTransposed[64];
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/* Data is shifted out of this pin*/
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int SPI_MOSI;
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/* The clock is signaled on this pin */
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@@ -66,6 +68,8 @@
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int SPI_CS;
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/* The maximum number of devices we use */
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int maxDevices;
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+ /* Choose whether we're using common cathode or common anode displays */
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+ bool anodeMode;
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public:
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/*
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@@ -75,8 +79,9 @@
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* clockPin pin for the clock
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* csPin pin for selecting the device
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* numDevices maximum number of devices that can be controled
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+ * anode false for common-cathode displays, true for common-anode displays
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*/
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- LedControl(int dataPin, int clkPin, int csPin, int numDevices=1);
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+ LedControl(int dataPin, int clkPin, int csPin, int numDevices=1, bool anode=false);
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/*
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* Gets the number of devices attached to this LedControl.
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@@ -173,9 +178,25 @@
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* dp sets the decimal point.
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*/
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void setChar(int addr, int digit, char value, boolean dp);
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+
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+ /*
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+ * Transpose data matrix for use with common-anode displays.
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+ * Params:
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+ * addr address of the display
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+ */
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+ void transposeData(int addr);
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+
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+ /*
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+ * Light up segments of a 7-segment display directly by passing a binary value.
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+ * The eight bits of the byte each refer to a segment:
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+ * Byte: 0 0 0 0 0 0 0 0
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+ * Segments: DP A B C D E F G
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+ * Params:
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+ * addr address of the display
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+ * digit the position of the character on the display (0..7)
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+ * value the binary value to be displayed
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+ */
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+ void setDirectDigit(int addr, int digit, byte value);
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};
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#endif //LedControl.h
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-
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-
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-
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