From 4dadd62ea4acf857964374395f607785c907a32b Mon Sep 17 00:00:00 2001
From: cnlohr <charles@cnlohr.com>
Date: Wed, 29 Jul 2015 01:28:38 -0400
Subject: [PATCH] Add tool to simulate LEDs

---
 embeddedlinux/Makefile     |  22 +++++---
 embeddedlinux/ccconfig.h   |  11 ++++
 embeddedlinux/dummy_leds.c | 108 +++++++++++++++++++++++++++++++++++++
 3 files changed, 134 insertions(+), 7 deletions(-)
 create mode 100644 embeddedlinux/ccconfig.h
 create mode 100644 embeddedlinux/dummy_leds.c

diff --git a/embeddedlinux/Makefile b/embeddedlinux/Makefile
index 6b32729..8ccdf93 100644
--- a/embeddedlinux/Makefile
+++ b/embeddedlinux/Makefile
@@ -1,16 +1,24 @@
-all : embeddedcc
+all : embeddedcc dummy_leds
+
+CFLAGS:=-Os -I. -I.. -flto -I../embeddedcommon 
+
+LDFLAGS:= -s -Wl,--relax -Wl,-Map=test.map  -Wl,--gc-sections -ffunction-sections -fdata-sections -Wl,--strip-all -fno-asynchronous-unwind-tables
+#LDFLAGS:=-O0 -g
 
-CFLAGS:=-Ofast -DCCEMBEDDED -I.. -flto -m32 -DDFREQ=11025 -I../embeddedcommon -DNUM_LIN_LEDS=20
-LDFLAGS:=-ffunction-sections -Wl,--gc-sections -fno-asynchronous-unwind-tables -Wl,--strip-all
 
 embeddedcc :  ../embeddedcommon/embeddednf.c ../embeddedcommon/DFT32.c embeddedcc.c  ../embeddedcommon/embeddedout.c
-	gcc -o $@ $^ $(CFLAGS) $(LDFLAGS)
+	gcc -o $@ $^ $(CFLAGS) $(LDFLAGS) -m32
 
+dummy_leds : dummy_leds.c 
+	gcc -o $@ $^ -lX11 -lpthread $(CFLAGS) $(LDFLAGS)
 
-#SOUNDDEVICE:= --device=alsa_output.pci-0000_00_1b.0.analog-stereo.monitor 
+SOUNDDEVICE:= --device=alsa_output.pci-0000_00_1b.0.analog-stereo.monitor 
+#OUTIP:=192.168.4.1
+OUTIP:=127.0.0.1
 
 runembedded : embeddedcc
-	parec --format=u8 --rate=11025 --channels=1 $(SOUNDDEVICE) --latency=128 | ./embeddedcc 192.168.4.1 0
+	parec --format=u8 --rate=16000 --channels=1 $(SOUNDDEVICE) --latency=128 | ./embeddedcc $(OUTIP) 1
+
 
 clean :
-	rm -rf embeddedcc *~
+	rm -rf embeddedcc *~ dummy_leds
diff --git a/embeddedlinux/ccconfig.h b/embeddedlinux/ccconfig.h
new file mode 100644
index 0000000..e4a5a30
--- /dev/null
+++ b/embeddedlinux/ccconfig.h
@@ -0,0 +1,11 @@
+#ifndef _CCCONFIG_H
+#define _CCCONFIG_H
+
+#define CCEMBEDDED
+#define NUM_LIN_LEDS 300
+#define USE_NUM_LIN_LEDS 300
+#define DFREQ 16000
+
+
+#endif
+
diff --git a/embeddedlinux/dummy_leds.c b/embeddedlinux/dummy_leds.c
new file mode 100644
index 0000000..d49fc87
--- /dev/null
+++ b/embeddedlinux/dummy_leds.c
@@ -0,0 +1,108 @@
+#include <ccconfig.h>
+#include <X11/Xlib.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <pthread.h>
+#include <stdio.h>
+
+pthread_t pt;
+Display *d;
+Window w;
+XEvent e;
+int sockfd;
+struct sockaddr_in servaddr;
+int wid, hei;
+
+uint8_t mesg[NUM_LIN_LEDS*3+3];
+
+#define LEDS_PER_ROW 15
+#define LED_SIZE 15
+
+
+void thread_function( void * tf )
+{
+	int n;
+	struct sockaddr_in cliaddr;
+	socklen_t len;
+    XEvent exppp;
+
+	while(1)
+	{
+		len = sizeof(cliaddr);
+		n = recvfrom(sockfd,mesg,sizeof(mesg),0,(struct sockaddr *)&cliaddr,&len);
+		//XSendEventXClearArea( d, w, 0, 0, 1, 1, 1 );
+		XLockDisplay( d );
+		memset(&exppp, 0, sizeof(exppp));
+        exppp.type = Expose;
+        exppp.xexpose.window = w;
+        XSendEvent(d,w,False,ExposureMask,&exppp);
+		XFlush( d );
+		XUnlockDisplay( d );
+	}
+}
+
+
+int main(void)
+{
+	int n;
+
+	sockfd=socket(AF_INET,SOCK_DGRAM,0);
+
+	bzero(&servaddr,sizeof(servaddr));
+	servaddr.sin_family = AF_INET;
+	servaddr.sin_addr.s_addr=htonl(INADDR_ANY);
+	servaddr.sin_port=htons(7777);
+
+	if( bind(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr)) )
+	{
+		fprintf( stderr, "Error binding.\n" );
+	}
+
+
+	memset( mesg, 0, sizeof( mesg ) );
+
+	pthread_create (&pt, NULL, (void *) &thread_function, (void *)0);
+
+	int s;
+	wid = LEDS_PER_ROW;
+	hei = NUM_LIN_LEDS/LEDS_PER_ROW + ( (NUM_LIN_LEDS%LEDS_PER_ROW)?1:0 );
+
+	XInitThreads();
+
+	d = XOpenDisplay(NULL);
+
+	if (d == NULL) {
+		fprintf(stderr, "Cannot open display\n");
+		exit(1);
+	}
+
+	s = DefaultScreen(d);
+	w = XCreateSimpleWindow(d, RootWindow(d, s), 10, 10, wid*LED_SIZE, hei*LED_SIZE, 1, BlackPixel(d, s), WhitePixel(d, s));
+	XSetStandardProperties( d, w, "LED Simulaor", "LED Simulator", None, NULL, 0, NULL );
+	XSelectInput(d, w, ExposureMask | KeyPressMask);
+	XMapWindow(d, w);
+
+	GC dgc = XCreateGC(d, w, 0, 0);
+
+	while (1) {
+		XNextEvent(d, &e);
+		if (e.type == Expose) {
+			for( n = 0; n < NUM_LIN_LEDS; n++ )
+			{
+				unsigned long color = ( mesg[n*3+3] << 8 ) | ( mesg[n*3+4] << 16 ) | (mesg[n*3+5] << 0);
+				XSetForeground(d, dgc, color);
+				int x = n % wid;
+				int y = n / wid;
+
+				XFillRectangle(d, w, dgc, x*LED_SIZE, y*LED_SIZE, LED_SIZE, LED_SIZE);
+			}
+		}
+//		if (e.type == ClientMessage )
+//			break;
+	}
+
+	XCloseDisplay(d);
+	return 0;
+}