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added sendcard l0dable

This commit is contained in:
schneider 2011-08-03 17:38:30 +02:00
parent ecc8a0e0fb
commit 6dcdaf17fe
3 changed files with 297 additions and 1 deletions
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12
firmware/l0dable/EXPORTS
View File

@ -35,3 +35,15 @@ push_queue
the_config the_config
the_queue the_queue
work_queue work_queue
selectFile
nrf_snd_pkt_crc_encr
nrf_rcv_pkt_time_encr
getInput
ECIES_encyptkeygen
f_open
f_read
strlen
strcpy
xxtea_encode_words
getRandom
crc16

2
firmware/l0dable/loadable.ld
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@ -1,5 +1,5 @@
MEMORY MEMORY
{ {
sram(rwx): ORIGIN = 0x10002000 - 2048, LENGTH = 2048 sram(rwx): ORIGIN = 0x10002000 - 2548, LENGTH = 2548
} }
INCLUDE ram.ld INCLUDE ram.ld

284
firmware/l0dable/sendcard.c Normal file
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@ -0,0 +1,284 @@
#include <sysinit.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdint.h>
#include "basic/basic.h"
#include "lcd/render.h"
#include "lcd/allfonts.h"
#include "basic/ecc.h"
#include "funk/nrf24l01p.h"
#include "filesystem/ff.h"
#include "filesystem/diskio.h"
#include "funk/filetransfer.h"
#include "lcd/print.h"
#include <string.h>
#include "funk/nrf24l01p.h"
#include "funk/filetransfer.h"
#include "funk/rftransfer.h"
#include "basic/basic.h"
#include "basic/xxtea.h"
#include "filesystem/ff.h"
#include "funk/rftransfer.h"
#include "funk/nrf24l01p.h"
#include <basic/basic.h>
#include <basic/random.h>
#include <core/systick/systick.h>
//#include <lcd/print.h>
#include "usetable.h"
//#include "lcd/print.h"
uint8_t mac[5] = {1,2,3,2,1};
void ram(void)
{
char file[13];
selectFile(file,"TXT");
sendFile(file);
}
void sendR(uint8_t *rx, uint8_t *ry)
{
uint8_t exp[2 + 4*NUMWORDS + 2];
exp[0] = 'R';
for(int i=0; i<4*NUMWORDS; i++)
exp[2+i] = rx[i];
exp[1] = 'X';
nrf_snd_pkt_crc(32, exp);
delayms(10);
exp[1] = 'Y';
for(int i=0; i<4*NUMWORDS; i++)
exp[2+i] = ry[i];
nrf_snd_pkt_crc(32, exp);
delayms(10);
}
int receiveKey(uint8_t type, uint8_t *x, uint8_t *y)
{
uint8_t buf[32];
uint8_t n;
n = nrf_rcv_pkt_time(1000, 32, buf);
if( n == 32 && buf[0] == type && buf[1] == 'X' ){
for(int i=0; i<NUMWORDS*4; i++)
x[i] = buf[i+2];
n = nrf_rcv_pkt_time(100, 32, buf);
if( n == 32 && buf[0] ==type && buf[1] == 'Y' ){
for(int i=0; i<NUMWORDS*4; i++)
y[i] = buf[i+2];
return 0;
}
}
return -1;
}
int receivePublicKey(uint8_t *px, uint8_t *py)
{
return receiveKey('P',px,py);
}
void sendMac(void)
{
uint8_t buf[32];
buf[0] = 'M';
buf[1] = 'C';
buf[2] = mac[0];
buf[3] = mac[1];
buf[4] = mac[2];
buf[5] = mac[3];
buf[6] = mac[4];
nrf_snd_pkt_crc(32, buf);
delayms(10);
}
int receiveMac(uint8_t *mac)
{
uint8_t buf[32];
uint8_t n;
n = nrf_rcv_pkt_time(100, 32, buf);
if( n == 32 && buf[0] == 'M' && buf[1] == 'C' ){
for(int i=0; i<5; i++)
mac[i] = buf[i+2];
return 0;
}
return -1;
}
int receiveKeys(uint8_t *px, uint8_t *py, uint8_t *mac)
{
uint8_t done = 0;
char key;
while( !done ){
lcdClear();
lcdPrintln("Recv. PUBKEY");
lcdPrintln("Down=Abort");
lcdRefresh();
key = getInput();
delayms(20);
if( key == BTN_DOWN ){
return -1;
}
if( receivePublicKey(px,py) )
continue;
if( receiveMac(mac) )
continue;
lcdClear();
lcdPrintln("Got PUBKEY"); lcdRefresh();
lcdPrintln("Hash:");
lcdPrintln("Right=OK");
lcdPrintln("Left=Retry");
lcdPrintln("Down=Abort");
lcdRefresh();
while(1){
key = getInput();
delayms(20);
if( key == BTN_LEFT ){
break;
}else if( key == BTN_RIGHT ){
done = 1;
break;
}else if( key == BTN_DOWN ){
return -1;
}
}
}
return 0;
}
void sendFile(char *filename)
{
uint8_t px[4*NUMWORDS];
uint8_t py[4*NUMWORDS];
uint8_t mac[5];
if( receiveKeys(px, py, mac) )
return;
uint8_t done = 0;
uint8_t key;
uint8_t k1[16], k2[16], rx[4*NUMWORDS], ry[4*NUMWORDS];
lcdClear();
lcdPrintln("Creating key"); lcdRefresh();
ECIES_encyptkeygen(px, py, k1, k2, rx, ry);
while( !done ){
lcdPrintln("Sending file");lcdRefresh();
sendR(rx,ry);
delayms(3000);
filetransfer_send((uint8_t*)filename, 0, mac, (uint32_t*)k1);
lcdPrintln("Done");
lcdPrintln("Right=OK");
lcdPrintln("Left=Retry");
lcdRefresh();
while(1){
key = getInput();
delayms(20);
if( key == BTN_LEFT ){
break;
}else if( key == BTN_RIGHT ){
done = 1;
break;
}
}
lcdClear();
}
}
//TODO: use a proper MAC to sign the message
int filetransfer_send(uint8_t *filename, uint16_t size,
uint8_t *mac, uint32_t const k[4])
{
uint8_t buf[MAXSIZE];
FIL file;
FRESULT res;
UINT readbytes;
if( size > MAXSIZE )
return 1; //File to big
res=f_open(&file, (const char*)filename, FA_OPEN_EXISTING|FA_READ);
if( res )
return res;
//res = f_read(&file, (char *)buf, size, &readbytes);
for(uint16_t i=0; i<MAXSIZE; i++)
buf[i] = 0;
res = f_read(&file, (char *)buf, MAXSIZE, &readbytes);
size = readbytes;
if( res )
return res;
if( size != readbytes)
return 1; //Error while reading
uint16_t wordcount = (size+3)/4;
//uint8_t macbuf[5];
uint8_t metadata[32];
if( strlen((char*)filename) < 20 )
strcpy((char*)metadata, (char*)filename);
else
return 1; //File name too long
metadata[20] = size >> 8;
metadata[21] = size & 0xFF;
//nrf_get_tx_max(5,macbuf);
//nrf_set_tx_mac(5, mac);
nrf_snd_pkt_crc_encr(32, metadata, k);
delayms(20);
xxtea_encode_words((uint32_t *)buf, wordcount, k);
rftransfer_send(wordcount*4, buf);
//nrf_set_tx_mac(5, macbuf);
return 0;
}
#define MAXPACKET 32
void rftransfer_send(uint16_t size, uint8_t *data)
{
uint8_t buf[MAXPACKET];
buf[0] = 'L';
buf[1] = size >> 8;
buf[2] = size & 0xFF;
uint16_t rand = getRandom() & 0xFFFF;
buf[3] = rand >> 8;
buf[4] = rand & 0xFF;
nrf_snd_pkt_crc(32,buf); //setup packet
delayms(20);
uint16_t index = 0;
uint8_t i;
uint16_t crc = crc16(data,size);
while(size){
buf[0] = 'D';
buf[1] = index >> 8;
buf[2] = index & 0xFF;
buf[3] = rand >> 8;
buf[4] = rand & 0xFF;
for(i=5; i<MAXPACKET-2 && size>0; i++,size--){
buf[i] = *data++;
}
index++;
nrf_snd_pkt_crc(32,buf); //data packet
delayms(20);
}
buf[0] = 'C';
buf[1] = crc >> 8;
buf[2] = crc & 0xFF;
buf[3] = rand >> 8;
buf[4] = rand & 0xFF;
nrf_snd_pkt_crc(32,buf); //setup packet
delayms(20);
}