added update-keys (no csum function yet)

git-svn-id: https://svn.spreadspace.org/avr/trunk@74 aa12f405-d877-488e-9caf-2d797e2a1cc7

2 files changed, 73 insertions, 0 deletions

diff --git a/usb-i2c-sl018/Makefile b/usb-i2c-sl018/Makefile
index f505450..bd66f1f 100644
--- a/usb-i2c-sl018/Makefile
+++ b/usb-i2c-sl018/Makefile
@@ -42,3 +42,6 @@ LUFA_OPTS += -D USB_PRODUCT="L\"$(NAME)\""
 LUFA_COMPONENTS := USB USBCLASS TWI

 

 include ../include.mk

+

+update-keys: update-keys.c

+	gcc -o $@ $<
\ No newline at end of file
diff --git a/usb-i2c-sl018/update-keys.c b/usb-i2c-sl018/update-keys.c
new file mode 100644
index 0000000..dc082ed
--- /dev/null
+++ b/usb-i2c-sl018/update-keys.c
@@ -0,0 +1,70 @@
+/*
+ *  spreadspace avr utils
+ *
+ *
+ *  Copyright (C) 2012 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of spreadspace avr utils.
+ *
+ *  spreadspace avr utils is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  spreadspace avr utils is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+
+#define MAX_KEY_LEN 7
+
+char generate_csum(char* key)
+{
+  return 0xFF;
+}
+
+int main(int argc, char* argv[])
+{
+  char* line = NULL;
+  size_t len = 0;
+
+  for(;;) {
+    ssize_t ret = getline(&line, &len, stdin);
+    if(ret <= 0) return 0;
+
+    int i;
+    for(i=0; i<len; ++i) {
+      if(!isxdigit(line[i])) {
+        line[i] = 0;
+        break;
+      }
+    }
+    if(i & 1 || i == 0 || i > MAX_KEY_LEN*2) {
+      fprintf(stderr, "ignoring invalid key (odd number of digits or empty string or too long): %s\n", line);
+      continue;
+    }
+    char key[MAX_KEY_LEN+1];
+    int j;
+    char tmp[3];
+    tmp[2] = 0;
+    for(j = 0; j<(i/2); ++j) {
+      tmp[0] = line[j*2];
+      tmp[1] = line[j*2 + 1];
+      key[j] = (char)strtoul(tmp, NULL, 16);
+    }
+    for(j=i/2; j < MAX_KEY_LEN; ++j) {
+      key[j] = 0;
+    }
+    key[MAX_KEY_LEN] = generate_csum(key);
+    ret = fwrite(key, MAX_KEY_LEN+1, 1, stdout);
+  }
+
+  return 0;
+}