From: ian <ian>
Date: Sun, 9 Jan 2005 02:27:38 +0000 (+0000)
Subject: new "readlots" program for capturing signals using the parport
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?a=commitdiff_plain;h=b4335699f38787fc4a532d1cd4032db512344915;p=trains.git

new "readlots" program for capturing signals using the parport
---

diff --git a/parport/.cvsignore b/parport/.cvsignore
index a0657fa..a22ddbf 100644
--- a/parport/.cvsignore
+++ b/parport/.cvsignore
@@ -1,3 +1,4 @@
 parport-ctl
 train-pic-prog-select
 siggen
+readlots
diff --git a/parport/Makefile b/parport/Makefile
index 0f9d8fd..0cb60c9 100644
--- a/parport/Makefile
+++ b/parport/Makefile
@@ -1,6 +1,6 @@
 include ../cprogs.make
 
-CPROGS_I=	parport-ctl train-pic-prog-select
+CPROGS_I=	parport-ctl train-pic-prog-select readlots
 SCRIPTS_I=	odyssey-train
 TARGETS=	siggen $(CPROGS_I)
 
@@ -12,6 +12,7 @@ install:
 
 train-pic-prog-select:	train-pic-prog-select.o lib.o
 siggen:			siggen.o lib.o
+readlots:		readlots.o lib.o
 
 train-pic-prog-select.o siggen.o lib.o: lib.h
 
diff --git a/parport/readlots.c b/parport/readlots.c
new file mode 100644
index 0000000..41c4330
--- /dev/null
+++ b/parport/readlots.c
@@ -0,0 +1,34 @@
+/**/
+
+#include <assert.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <linux/ppdev.h>
+
+#include "lib.h"
+
+static void badusage(void) {
+  fprintf(stderr,
+	  "usage: readlots <&parport\n"
+	  "options: none\n");
+}	  
+
+int main(int argc, const char *const *argv) {
+  unsigned char v;
+  struct timeval tv;
+  int r;
+
+  argc--;
+  argv++;
+  if (argc>=1) badusage();
+
+  for (;;) {
+    r= gettimeofday(&tv,0); assert(!r);
+    doioctl(PPRSTATUS, &v, 0);
+    printf("%10lu.%06lu %02x\n", tv.tv_sec, tv.tv_usec, v);
+  }
+}