Pehr Hovey
Control of mbed using OSC. Based on code from the Make Controller. Right now you can turn the onboard LEDs on/off and toggle 8 digital out pins. More I/O will be done in the future.
Diff: lwip/arch/iputil.c
- Revision:
- 0:439354122597
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/lwip/arch/iputil.c Wed Mar 17 03:17:38 2010 +0000
@@ -0,0 +1,25 @@
+#include "iputil.h"
+
+unsigned int base64enc_len(const char *str) {
+ return (((strlen(str)-1)/3)+1)<<2;
+}
+
+void base64enc(const char *input, unsigned int length, char *output) {
+ static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+ unsigned int c, c1, c2, c3;
+ for(unsigned int i = 0, j = 0; i<length; i+=3,j+=4) {
+ c1 = ((((unsigned char)*((unsigned char *)&input[i]))));
+ c2 = (length>i+1)?((((unsigned char)*((unsigned char *)&input[i+1])))):0;
+ c3 = (length>i+2)?((((unsigned char)*((unsigned char *)&input[i+2])))):0;
+
+ c = ((c1 & 0xFC) >> 2);
+ output[j+0] = base64[c];
+ c = ((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4);
+ output[j+1] = base64[c];
+ c = ((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6);
+ output[j+2] = (length>i+1)?base64[c]:'=';
+ c = (c3 & 0x3F);
+ output[j+3] = (length>i+2)?base64[c]:'=';
+ }
+ output[(((length-1)/3)+1)<<2] = '\0';
+}