From ae4c5334d0479f7beb25ce82455271b6129ea6dd Mon Sep 17 00:00:00 2001
From: tth <sigfood@dinorama.fr>
Date: Mon, 14 Jan 2019 03:20:54 +0100
Subject: [PATCH] first lut function

---
 core/Makefile   | 13 ++++++++++
 core/lut1024.h  | 17 ++++++++++++
 core/lut1024f.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++
 core/mklut.pl   | 10 +++++++
 core/t.c        | 45 ++++++++++++++++++++++++++++++++
 serial/t.c      |  3 +--
 6 files changed, 155 insertions(+), 2 deletions(-)
 create mode 100644 core/Makefile
 create mode 100644 core/lut1024.h
 create mode 100644 core/lut1024f.c
 create mode 100755 core/mklut.pl
 create mode 100644 core/t.c

diff --git a/core/Makefile b/core/Makefile
new file mode 100644
index 0000000..766f682
--- /dev/null
+++ b/core/Makefile
@@ -0,0 +1,13 @@
+#
+#
+#
+
+lut1024f.o:	lut1024f.c lut1024.h
+	gcc -Wall -c $<
+
+t:	t.c lut1024f.o  lut1024.h
+	gcc -Wall $< lut1024f.o -o $@
+
+foo.lut1024f:	mklut.pl Makefile
+	./mklut.pl quux > $@
+
diff --git a/core/lut1024.h b/core/lut1024.h
new file mode 100644
index 0000000..f271685
--- /dev/null
+++ b/core/lut1024.h
@@ -0,0 +1,17 @@
+/*
+ *	LUT 1024 - DEALING WITH DISCRETE VALUES 
+ */
+
+
+typedef struct {
+	int		flags;
+	float		vals[1024];
+	} Lut1024f;
+
+/* ---------------------------------------------------------------- */
+
+int slurp_lut1024f(FILE *fp, Lut1024f *where, int notused);
+int load_lut1024f(char *fname, Lut1024f *where, int notused);
+
+/* ---------------------------------------------------------------- */
+
diff --git a/core/lut1024f.c b/core/lut1024f.c
new file mode 100644
index 0000000..accf37b
--- /dev/null
+++ b/core/lut1024f.c
@@ -0,0 +1,69 @@
+/*
+ *	LUT 1024 -> FLOAT
+ */
+
+#include	<stdio.h>
+#include	<stdlib.h>
+#include 	<string.h>
+
+#include	"lut1024.h"
+
+extern int	verbosity;
+
+/* ---------------------------------------------------------------- */
+
+int slurp_lut1024f(FILE *fp, Lut1024f *where, int notused)
+{
+int	count, foo;
+
+for(count=0; count<1024; count++) {
+	foo = fscanf(fp, "%f", &where->vals[foo]);
+	if (1 != foo) {
+		fprintf(stderr, "%s: bad read %d\n", __func__, foo);
+		return -2;
+		}
+	}
+
+return -1;
+}
+
+/* ---------------------------------------------------------------- */
+
+int load_lut1024f(char *fname, Lut1024f *where, int notused)
+{
+FILE	*fplut;
+char	firstline[100];
+char	label[] = "LUT1024F";
+int	foo;
+
+#if DEBUG_LEVEL
+fprintg(stderr, ">>> %s ( '%s' %p %d )\n", __func__,
+			fname, where, notused);
+#endif
+
+if (NULL==(fplut=fopen(fname, "r"))) {
+	perror(fname);
+	return -2;
+	}
+
+fprintf(stderr, "%s: getting first line\n", __func__);
+
+if (NULL==fgets(firstline, 20, fplut)) {
+	fprintf(stderr, "%s: nothing to read from %s\n",
+					__func__, fname);
+	return -3;
+	}
+
+foo = strncmp(label, firstline, sizeof(label)-1);
+if (foo) {
+	fprintf(stderr, "%s: bad label [%s]\n", __func__, firstline);
+	exit(5);
+	}
+
+
+fclose(fplut);
+
+return -1;
+}
+
+/* ---------------------------------------------------------------- */
diff --git a/core/mklut.pl b/core/mklut.pl
new file mode 100755
index 0000000..d0f1892
--- /dev/null
+++ b/core/mklut.pl
@@ -0,0 +1,10 @@
+#!/usr/bin/perl
+
+my $foo;
+
+print "LUT1024F\n";
+
+for ($foo=0; $foo<1024; $foo++) {
+	print rand()*3.30, "\n";
+	}
+0;
\ No newline at end of file
diff --git a/core/t.c b/core/t.c
new file mode 100644
index 0000000..df47ff2
--- /dev/null
+++ b/core/t.c
@@ -0,0 +1,45 @@
+/*
+ *	main de test des core functions
+ */
+
+#include  <stdio.h>
+#include  <stdlib.h>
+#include  <getopt.h>
+
+#include	"lut1024.h"
+
+
+int verbosity;
+
+/* ---------------------------------------------------------------- */
+
+int main (int argc, char *argv[])
+{
+int		foo, opt;
+
+/* set some default values */
+verbosity	= 0;
+
+
+while ((opt = getopt(argc, argv, "v")) != -1) {
+	switch (opt) {
+		case 'v':	verbosity++;		break;
+
+
+		default:
+			fprintf(stderr, "%s : uh ?", argv[0]);
+			exit(1);
+			break;
+		}
+
+	}
+
+
+foo = load_lut1024f("foo.lut1024f", NULL, 1);
+
+fprintf(stderr, "chargement de la lut --> %d\n", foo);
+
+return 0;
+}
+
+/* ---------------------------------------------------------------- */
diff --git a/serial/t.c b/serial/t.c
index fef41c6..eed23c6 100644
--- a/serial/t.c
+++ b/serial/t.c
@@ -53,14 +53,13 @@ return 0;
 int main (int argc, char *argv[])
 {
 int		serial_in;
-char		*device;
+char		*device = "/dev/ttyACM0";
 int		nbre, speed, opt;
 
 /* set some default values */
 verbosity	= 0;
 nbre		= 25;
 speed		= 9600;
-device		= "/dev/ttyACM0";
 
 while ((opt = getopt(argc, argv, "d:n:v")) != -1) {
 	switch (opt) {