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.
lwip/arch/iputil.c
- Committer:
- pehrhovey
- Date:
- 2010-03-17
- Revision:
- 0:439354122597
File content as of revision 0:439354122597:
#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'; }