Revision 0:64cb39e64128, committed 2011-12-06

Comitter:

User_4574

Date:

Tue Dec 06 22:31:21 2011 +0000

Commit message:

DRAFT

Changed in this revision

diff -r 000000000000 -r 64cb39e64128 DMXPacket/DMXPacket.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DMXPacket/DMXPacket.c	Tue Dec 06 22:31:21 2011 +0000
@@ -0,0 +1,87 @@
+/* DMX Packet Library
+ * Nathan Lasseter (User_4574) 2011
+ * Released unlicenced
+ * http://www.dmx512-online.com/packt.html
+ */
+
+#include "mbed.h"
+#include "DMXPacket.h"
+
+void init(DigitalOut* dmx) {
+    /* initialise */
+    *dmx = MARK;
+    return;
+}
+
+void sendBreak(DigitalOut* dmx) {
+    /* BREAK */
+    *dmx = BREAK;
+    wait_us(30 * PW);
+    return;
+}
+
+void sendMarkAfterBreak(DigitalOut* dmx) {
+    /* MARK AFTER BREAK */
+    *dmx = MARK;
+    wait_us(3 * PW);
+    return;
+}
+
+void sendStartCode(DigitalOut* dmx) {
+    /* 1 START 8 DATA */
+    *dmx = BREAK;
+    wait_us(9 * PW);
+    
+    /* 2 STOP */
+    *dmx = MARK;
+    wait_us(2 * PW);
+    return;
+}
+
+void sendChannelData(DigitalOut* dmx, char* channelData) {
+    char i, data = *channelData;
+    /* 1 START */
+    *dmx = BREAK;
+    wait_us(PW);
+    
+    /* 8 DATA */
+    for(i = 0xF0; i; i >>= 1) {
+        *dmx = ((data & i) ? MARK : BREAK);
+        wait_us(PW);
+    }
+    
+    /* 2 STOP */
+    *dmx = MARK;
+    wait_us(2 * PW);
+    return;
+}
+
+void writePacket(DigitalOut* dmx, char* channelData, int channelCount) {
+    int i;
+    
+    /* BREAK */
+    sendBreak(dmx);
+    
+    /* MARK AFTER BREAK */
+    sendMarkAfterBreak(dmx);
+    
+    /* START CODE */
+    sendStartCode(dmx);
+    
+    /* CHANNEL DATA */
+    for(i=0; i<channelCount; i++) {
+    
+        /* MARK TIME BETWEEN FRAMES */
+        *dmx = MARK;
+        wait_us(MTBF * PW);
+        
+        /* CHANNEL DATA */
+        sendChannelData(dmx, channelData + i);
+    }
+    
+    /* MARK TIME BETWEEN PACKETS */
+    /* AND RETURN TO IDLE */
+    *dmx = MARK;
+    wait_us(MTBP * PW);
+    return;
+}
\ No newline at end of file

diff -r 000000000000 -r 64cb39e64128 DMXPacket/DMXPacket.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DMXPacket/DMXPacket.h	Tue Dec 06 22:31:21 2011 +0000
@@ -0,0 +1,10 @@
+#include "mbed.h"
+#define MARK 1
+#define BREAK 0
+
+#define PW 4
+#define MTBF 1
+#define MTBP 1
+
+void init(DigitalOut*);
+void writePacket(DigitalOut*, char*, int);
\ No newline at end of file

diff -r 000000000000 -r 64cb39e64128 TextLCD.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD.lib	Tue Dec 06 22:31:21 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/simon/code/TextLCD/#44f34c09bd37

diff -r 000000000000 -r 64cb39e64128 iface.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/iface.c	Tue Dec 06 22:31:21 2011 +0000
@@ -0,0 +1,88 @@
+#include "mbed.h"
+#include "iface.h"
+#include "memory.h"
+
+Timeout timer;
+char keydown = 0;
+
+extern I2C io;
+extern int channelPointer;
+extern char* channelData;
+extern int waddr;
+extern int raddr;
+
+void nextChannel() {
+    if (channelPointer < (CHANNELCOUNT - 1)) channelPointer++;
+}
+void previousChannel() {
+    if (channelPointer > 0) channelPointer--;
+}
+void incrementValue() {
+    if (channelData[channelPointer] < 255) channelData[channelPointer]++;
+}
+void decrementValue() {
+    if (channelData[channelPointer] > 0) channelData[channelPointer]--;
+}
+void homeChannel() {
+    channelPointer = 0;
+}
+void zeroValue() {
+    channelData[channelPointer] = 0;
+}
+void maxValue() {
+    channelData[channelPointer] = 255;
+}
+
+void handle(char key) {
+    switch(key) {
+        case 0x11:
+            homeChannel();
+            break;
+        case 0x42:
+            nextChannel();
+            break;
+        case 0x12:
+            previousChannel();
+            break;
+        case 0x21:
+            incrementValue();
+            break;
+        case 0x24:
+            decrementValue();
+            break;
+        case 0x48:
+            maxValue();
+            break;
+        case 0x18:
+            zeroValue();
+            break;
+        case 0x14:
+            saveMemory();
+            break;
+        case 0x44:
+            loadMemory();
+            break;
+    }
+}
+
+void keyhandle() {
+    if(keydown) {
+        handle(keydown);
+        timer.attach_us(&keyhandle, 20000);
+    }
+}
+
+void keypress() {
+    char byte0f, bytef0;
+    io.read(raddr, &byte0f, 1);
+    bytef0 = 0xF0;
+    io.write(waddr, &bytef0, 1);
+    io.read(raddr, &bytef0, 1);
+    keydown = ~(byte0f | bytef0);
+    if(keydown) {
+        handle(keydown);
+        if((keydown != 0x14) && (keydown != 0x44)) timer.attach_us(&keyhandle, 500000);
+    }
+    byte0f = 0x0F;
+    io.write(waddr, &byte0f, 1);
+}
\ No newline at end of file

diff -r 000000000000 -r 64cb39e64128 iface.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/iface.h	Tue Dec 06 22:31:21 2011 +0000
@@ -0,0 +1,4 @@
+#define KEY_COUNT 4
+#define CHANNELCOUNT 512
+
+void keypress();
\ No newline at end of file

diff -r 000000000000 -r 64cb39e64128 main.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.c	Tue Dec 06 22:31:21 2011 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+#include "DMXPacket.h"
+#include "iface.h"
+#include "TextLCD.h"
+
+DigitalOut dmx(p20);
+InterruptIn intr(p29);
+I2C io(p28, p27);
+
+TextLCD lcd(p16, p15, p13, p12, p11, p10); // rs, e, d4-d7
+
+int channelPointer = 0;
+char* channelData = (char*) calloc(CHANNELCOUNT, sizeof(char));
+int waddr = 0x40;
+int raddr = waddr+1;
+
+int main() {
+    char byte[1];
+    io.frequency(100000);
+    byte[0]=0x0F;
+    io.write(waddr, byte, 1);
+    
+    intr.fall(&keypress);
+    
+    init(&dmx);
+    
+    lcd.cls();
+    lcd.printf("   Welcome to\n ** DMXDebug! **");
+    wait(2);
+    lcd.cls();
+    
+    //printf("\r\nWelcome to DMXDebug!\r\n");
+    while (1) {
+        //printf("\rChannel: %03d\t\tData: %03d", channelPointer, channelData[channelPointer]);
+        lcd.locate(0, 0);
+        lcd.printf("Channel : %03d\n   Data : %03d", channelPointer, channelData[channelPointer]);
+        writePacket(&dmx, channelData, CHANNELCOUNT);
+    }
+}
\ No newline at end of file

diff -r 000000000000 -r 64cb39e64128 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Dec 06 22:31:21 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912

diff -r 000000000000 -r 64cb39e64128 memory.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/memory.c	Tue Dec 06 22:31:21 2011 +0000
@@ -0,0 +1,27 @@
+#include "mbed.h"
+#include "iface.h"
+#include "memory.h"
+
+LocalFileSystem local("local");
+
+extern int channelPointer;
+extern char* channelData;
+
+void saveMemory() {
+    int chan;
+    FILE* mem = fopen("/local/memory.txt", "w");
+    for(chan = 0; chan < CHANNELCOUNT; chan++)
+        if(channelData[chan])
+            fprintf(mem, "%03d %03hhd\r\n", chan, channelData[chan]);
+    fclose(mem);
+}
+
+void loadMemory() {
+    int chan;
+    char val;
+    for(chan = 0; chan < CHANNELCOUNT; chan++) channelData[channelPointer] = 0;
+    FILE* mem = fopen("/local/memory.txt", "r");
+    while(fscanf(mem, "%d %hhd ", &chan, &val) != EOF) channelData[chan] = val;
+    fclose(mem);
+    channelPointer = 0;
+}
\ No newline at end of file

diff -r 000000000000 -r 64cb39e64128 memory.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/memory.h	Tue Dec 06 22:31:21 2011 +0000
@@ -0,0 +1,2 @@
+void saveMemory();
+void loadMemory();
\ No newline at end of file