From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Wed, 1 May 2013 18:21:14 +0000 (+0200)
Subject: +terminal
X-Git-Url: https://git.jankratochvil.net/?p=lptgpib.git;a=commitdiff_plain;h=2665bb5e2a4bf30c7e68813f6ee07ca4d8f1d15e

+terminal
---

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..55271f9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+tags
+lptgpib.o
+controler
+device
+sniff
+terminal
diff --git a/Makefile b/Makefile
index a5efd3d..3f58983 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 CC=gcc
-CFLAGS=-O2 -Wall
-PROGS=controler device sniff
+CFLAGS=-g -Wall -Werror
+PROGS=controler device sniff terminal
 all: $(PROGS)
 $(PROGS): lptgpib.o
 clean:
diff --git a/terminal.c b/terminal.c
new file mode 100644
index 0000000..5de10a8
--- /dev/null
+++ b/terminal.c
@@ -0,0 +1,45 @@
+#include "lptgpib.h"
+#include <stdio.h>
+#include <string.h>
+#include <poll.h>
+#include <unistd.h>
+#include <assert.h>
+#include <sys/io.h>
+
+// lptgpib.c
+#define get_control() (inb(lpt_base+2) ^ 0x04)
+#define put_control(x) outb((x) ^ 0x04, lpt_base+2)
+#define TRI 0x20 /* tristate data lines */
+#define NDAC 0x04 /* LPT pin 16 */
+#define DAV  0x01 /* LPT pin 1  */
+
+extern int lpt_base;
+
+int main(int argc,char **argv) {
+  lptgpib_init(0x378);
+  for (;;) {
+    put_control(TRI | NDAC);	/* clear NRFD */
+    if (get_control()&DAV) {	/* wait for DAV */
+      fprintf(stderr,"ctu znak...\n");
+      char flags,val=lptgpib_read_byte(&flags);
+      if (flags&ATN)
+	lptgpib_print_command(val);
+      else
+	fprintf(stderr,"precten znak: %02x (%c)\n",val,val);
+    }
+    struct pollfd pollfd;
+    memset(&pollfd,0,sizeof pollfd);
+    pollfd.fd=0;
+    pollfd.events=POLLIN;
+    int i=poll(&pollfd,1,0);
+    assert(i==0||i==1);
+    if (i==1) {
+      char val;
+      i=read(0,&val,1);
+      assert(i==1);
+      fprintf(stderr,"zapisuji znak... %02x (%c)\n",val,val);
+      lptgpib_write_byte(val,0);
+      fprintf(stderr,"zapsan znak.\n");
+    }
+  }
+}