mirror of
https://github.com/Proxmark/proxmark3.git
synced 2025-08-14 02:26:59 -07:00
Clean up pcf7931
@iceman1001 s cleanup of pcf7931 commands on client side and split out pcf7931 from lfops.c as it is getting large
This commit is contained in:
marshmellow42
parent
be6250d31b
commit
d10e08ae6e
8 changed files with 695 additions and 640 deletions
534
armsrc/lfops.c
534
armsrc/lfops.c
|
|
@ -768,7 +768,7 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
|
|||
// Configure to go in 125Khz listen mode
|
||||
LFSetupFPGAForADC(95, true);
|
||||
|
||||
while(!BUTTON_PRESS()) {
|
||||
while(!BUTTON_PRESS() && !usb_poll_validate_length()) {
|
||||
|
||||
WDT_HIT();
|
||||
if (ledcontrol) LED_A_ON();
|
||||
|
|
@ -857,7 +857,7 @@ void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
|
|||
// Configure to go in 125Khz listen mode
|
||||
LFSetupFPGAForADC(95, true);
|
||||
|
||||
while(!BUTTON_PRESS()) {
|
||||
while(!BUTTON_PRESS() && !usb_poll_validate_length()) {
|
||||
|
||||
WDT_HIT();
|
||||
if (ledcontrol) LED_A_ON();
|
||||
|
|
@ -948,7 +948,7 @@ void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
|
|||
// Configure to go in 125Khz listen mode
|
||||
LFSetupFPGAForADC(95, true);
|
||||
|
||||
while(!BUTTON_PRESS()) {
|
||||
while(!BUTTON_PRESS() && !usb_poll_validate_length()) {
|
||||
|
||||
WDT_HIT();
|
||||
if (ledcontrol) LED_A_ON();
|
||||
|
|
@ -1007,7 +1007,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
|
|||
// Configure to go in 125Khz listen mode
|
||||
LFSetupFPGAForADC(95, true);
|
||||
|
||||
while(!BUTTON_PRESS()) {
|
||||
while(!BUTTON_PRESS() && !usb_poll_validate_length()) {
|
||||
WDT_HIT();
|
||||
if (ledcontrol) LED_A_ON();
|
||||
DoAcquisition_default(-1,true);
|
||||
|
|
@ -1582,274 +1582,6 @@ void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int
|
|||
|
||||
}
|
||||
|
||||
|
||||
#define abs(x) ( ((x)<0) ? -(x) : (x) )
|
||||
#define max(x,y) ( x<y ? y:x)
|
||||
|
||||
int DemodPCF7931(uint8_t **outBlocks) {
|
||||
uint8_t BitStream[256];
|
||||
uint8_t Blocks[8][16];
|
||||
uint8_t *GraphBuffer = BigBuf_get_addr();
|
||||
int GraphTraceLen = BigBuf_max_traceLen();
|
||||
int i, j, lastval, bitidx, half_switch;
|
||||
int clock = 64;
|
||||
int tolerance = clock / 8;
|
||||
int pmc, block_done;
|
||||
int lc, warnings = 0;
|
||||
int num_blocks = 0;
|
||||
int lmin=128, lmax=128;
|
||||
uint8_t dir;
|
||||
|
||||
LFSetupFPGAForADC(95, true);
|
||||
DoAcquisition_default(0, 0);
|
||||
|
||||
|
||||
lmin = 64;
|
||||
lmax = 192;
|
||||
|
||||
i = 2;
|
||||
|
||||
/* Find first local max/min */
|
||||
if(GraphBuffer[1] > GraphBuffer[0]) {
|
||||
while(i < GraphTraceLen) {
|
||||
if( !(GraphBuffer[i] > GraphBuffer[i-1]) && GraphBuffer[i] > lmax)
|
||||
break;
|
||||
i++;
|
||||
}
|
||||
dir = 0;
|
||||
}
|
||||
else {
|
||||
while(i < GraphTraceLen) {
|
||||
if( !(GraphBuffer[i] < GraphBuffer[i-1]) && GraphBuffer[i] < lmin)
|
||||
break;
|
||||
i++;
|
||||
}
|
||||
dir = 1;
|
||||
}
|
||||
|
||||
lastval = i++;
|
||||
half_switch = 0;
|
||||
pmc = 0;
|
||||
block_done = 0;
|
||||
|
||||
for (bitidx = 0; i < GraphTraceLen; i++)
|
||||
{
|
||||
if ( (GraphBuffer[i-1] > GraphBuffer[i] && dir == 1 && GraphBuffer[i] > lmax) || (GraphBuffer[i-1] < GraphBuffer[i] && dir == 0 && GraphBuffer[i] < lmin))
|
||||
{
|
||||
lc = i - lastval;
|
||||
lastval = i;
|
||||
|
||||
// Switch depending on lc length:
|
||||
// Tolerance is 1/8 of clock rate (arbitrary)
|
||||
if (abs(lc-clock/4) < tolerance) {
|
||||
// 16T0
|
||||
if((i - pmc) == lc) { /* 16T0 was previous one */
|
||||
/* It's a PMC ! */
|
||||
i += (128+127+16+32+33+16)-1;
|
||||
lastval = i;
|
||||
pmc = 0;
|
||||
block_done = 1;
|
||||
}
|
||||
else {
|
||||
pmc = i;
|
||||
}
|
||||
} else if (abs(lc-clock/2) < tolerance) {
|
||||
// 32TO
|
||||
if((i - pmc) == lc) { /* 16T0 was previous one */
|
||||
/* It's a PMC ! */
|
||||
i += (128+127+16+32+33)-1;
|
||||
lastval = i;
|
||||
pmc = 0;
|
||||
block_done = 1;
|
||||
}
|
||||
else if(half_switch == 1) {
|
||||
BitStream[bitidx++] = 0;
|
||||
half_switch = 0;
|
||||
}
|
||||
else
|
||||
half_switch++;
|
||||
} else if (abs(lc-clock) < tolerance) {
|
||||
// 64TO
|
||||
BitStream[bitidx++] = 1;
|
||||
} else {
|
||||
// Error
|
||||
warnings++;
|
||||
if (warnings > 10)
|
||||
{
|
||||
Dbprintf("Error: too many detection errors, aborting.");
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
if(block_done == 1) {
|
||||
if(bitidx == 128) {
|
||||
for(j=0; j<16; j++) {
|
||||
Blocks[num_blocks][j] = 128*BitStream[j*8+7]+
|
||||
64*BitStream[j*8+6]+
|
||||
32*BitStream[j*8+5]+
|
||||
16*BitStream[j*8+4]+
|
||||
8*BitStream[j*8+3]+
|
||||
4*BitStream[j*8+2]+
|
||||
2*BitStream[j*8+1]+
|
||||
BitStream[j*8];
|
||||
}
|
||||
num_blocks++;
|
||||
}
|
||||
bitidx = 0;
|
||||
block_done = 0;
|
||||
half_switch = 0;
|
||||
}
|
||||
if(i < GraphTraceLen)
|
||||
{
|
||||
if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;
|
||||
else dir = 1;
|
||||
}
|
||||
}
|
||||
if(bitidx==255)
|
||||
bitidx=0;
|
||||
warnings = 0;
|
||||
if(num_blocks == 4) break;
|
||||
}
|
||||
memcpy(outBlocks, Blocks, 16*num_blocks);
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
|
||||
|
||||
return num_blocks;
|
||||
}
|
||||
|
||||
int IsBlock0PCF7931(uint8_t *Block) {
|
||||
// Assume RFU means 0 :)
|
||||
if((memcmp(Block, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) == 0) && memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) // PAC enabled
|
||||
return 1;
|
||||
if((memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) && Block[7] == 0) // PAC disabled, can it *really* happen ?
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int IsBlock1PCF7931(uint8_t *Block) {
|
||||
// Assume RFU means 0 :)
|
||||
if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0)
|
||||
if((Block[14] & 0x7f) <= 9 && Block[15] <= 9)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#define ALLOC 16
|
||||
|
||||
void ReadPCF7931() {
|
||||
uint8_t Blocks[8][17];
|
||||
uint8_t tmpBlocks[4][16];
|
||||
int i, j, ind, ind2, n;
|
||||
int num_blocks = 0;
|
||||
int max_blocks = 8;
|
||||
int ident = 0;
|
||||
int error = 0;
|
||||
int tries = 0;
|
||||
|
||||
memset(Blocks, 0, 8*17*sizeof(uint8_t));
|
||||
|
||||
do {
|
||||
memset(tmpBlocks, 0, 4*16*sizeof(uint8_t));
|
||||
n = DemodPCF7931((uint8_t**)tmpBlocks);
|
||||
if(!n)
|
||||
error++;
|
||||
if(error==10 && num_blocks == 0) {
|
||||
Dbprintf("Error, no tag or bad tag");
|
||||
return;
|
||||
}
|
||||
else if (tries==20 || error==10) {
|
||||
Dbprintf("Error reading the tag");
|
||||
Dbprintf("Here is the partial content");
|
||||
goto end;
|
||||
}
|
||||
|
||||
for(i=0; i<n; i++)
|
||||
Dbprintf("(dbg) %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
|
||||
tmpBlocks[i][0], tmpBlocks[i][1], tmpBlocks[i][2], tmpBlocks[i][3], tmpBlocks[i][4], tmpBlocks[i][5], tmpBlocks[i][6], tmpBlocks[i][7],
|
||||
tmpBlocks[i][8], tmpBlocks[i][9], tmpBlocks[i][10], tmpBlocks[i][11], tmpBlocks[i][12], tmpBlocks[i][13], tmpBlocks[i][14], tmpBlocks[i][15]);
|
||||
if(!ident) {
|
||||
for(i=0; i<n; i++) {
|
||||
if(IsBlock0PCF7931(tmpBlocks[i])) {
|
||||
// Found block 0 ?
|
||||
if(i < n-1 && IsBlock1PCF7931(tmpBlocks[i+1])) {
|
||||
// Found block 1!
|
||||
// \o/
|
||||
ident = 1;
|
||||
memcpy(Blocks[0], tmpBlocks[i], 16);
|
||||
Blocks[0][ALLOC] = 1;
|
||||
memcpy(Blocks[1], tmpBlocks[i+1], 16);
|
||||
Blocks[1][ALLOC] = 1;
|
||||
max_blocks = max((Blocks[1][14] & 0x7f), Blocks[1][15]) + 1;
|
||||
// Debug print
|
||||
Dbprintf("(dbg) Max blocks: %d", max_blocks);
|
||||
num_blocks = 2;
|
||||
// Handle following blocks
|
||||
for(j=i+2, ind2=2; j!=i; j++, ind2++, num_blocks++) {
|
||||
if(j==n) j=0;
|
||||
if(j==i) break;
|
||||
memcpy(Blocks[ind2], tmpBlocks[j], 16);
|
||||
Blocks[ind2][ALLOC] = 1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
else {
|
||||
for(i=0; i<n; i++) { // Look for identical block in known blocks
|
||||
if(memcmp(tmpBlocks[i], "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16)) { // Block is not full of 00
|
||||
for(j=0; j<max_blocks; j++) {
|
||||
if(Blocks[j][ALLOC] == 1 && !memcmp(tmpBlocks[i], Blocks[j], 16)) {
|
||||
// Found an identical block
|
||||
for(ind=i-1,ind2=j-1; ind >= 0; ind--,ind2--) {
|
||||
if(ind2 < 0)
|
||||
ind2 = max_blocks;
|
||||
if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
|
||||
// Dbprintf("Tmp %d -> Block %d", ind, ind2);
|
||||
memcpy(Blocks[ind2], tmpBlocks[ind], 16);
|
||||
Blocks[ind2][ALLOC] = 1;
|
||||
num_blocks++;
|
||||
if(num_blocks == max_blocks) goto end;
|
||||
}
|
||||
}
|
||||
for(ind=i+1,ind2=j+1; ind < n; ind++,ind2++) {
|
||||
if(ind2 > max_blocks)
|
||||
ind2 = 0;
|
||||
if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
|
||||
// Dbprintf("Tmp %d -> Block %d", ind, ind2);
|
||||
memcpy(Blocks[ind2], tmpBlocks[ind], 16);
|
||||
Blocks[ind2][ALLOC] = 1;
|
||||
num_blocks++;
|
||||
if(num_blocks == max_blocks) goto end;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
tries++;
|
||||
if (BUTTON_PRESS()) return;
|
||||
} while (num_blocks != max_blocks);
|
||||
end:
|
||||
Dbprintf("-----------------------------------------");
|
||||
Dbprintf("Memory content:");
|
||||
Dbprintf("-----------------------------------------");
|
||||
for(i=0; i<max_blocks; i++) {
|
||||
if(Blocks[i][ALLOC]==1){
|
||||
Dbprintf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
|
||||
Blocks[i][0], Blocks[i][1], Blocks[i][2], Blocks[i][3], Blocks[i][4], Blocks[i][5], Blocks[i][6], Blocks[i][7],
|
||||
Blocks[i][8], Blocks[i][9], Blocks[i][10], Blocks[i][11], Blocks[i][12], Blocks[i][13], Blocks[i][14], Blocks[i][15]);
|
||||
}else
|
||||
Dbprintf("<missing block %d>", i);
|
||||
}
|
||||
Dbprintf("-----------------------------------------");
|
||||
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
//-----------------------------------
|
||||
// EM4469 / EM4305 routines
|
||||
//-----------------------------------
|
||||
|
|
@ -2067,261 +1799,3 @@ void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode
|
|||
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
|
||||
LED_D_OFF();
|
||||
}
|
||||
|
||||
|
||||
#define T0_PCF 8 //period for the pcf7931 in us
|
||||
|
||||
/* Write on a byte of a PCF7931 tag
|
||||
* @param address : address of the block to write
|
||||
@param byte : address of the byte to write
|
||||
@param data : data to write
|
||||
*/
|
||||
void WritePCF7931(uint8_t pass1, uint8_t pass2, uint8_t pass3, uint8_t pass4, uint8_t pass5, uint8_t pass6, uint8_t pass7, uint16_t init_delay, int32_t l, int32_t p, uint8_t address, uint8_t byte, uint8_t data)
|
||||
{
|
||||
|
||||
uint32_t tab[1024]={0}; // data times frame
|
||||
uint32_t u = 0;
|
||||
uint8_t parity = 0;
|
||||
bool comp = 0;
|
||||
|
||||
|
||||
//BUILD OF THE DATA FRAME
|
||||
|
||||
//alimentation of the tag (time for initializing)
|
||||
AddPatternPCF7931(init_delay, 0, 8192/2*T0_PCF, tab);
|
||||
|
||||
//PMC
|
||||
Dbprintf("Initialization delay : %d us", init_delay);
|
||||
AddPatternPCF7931(8192/2*T0_PCF + 319*T0_PCF+70, 3*T0_PCF, 29*T0_PCF, tab);
|
||||
|
||||
Dbprintf("Offsets : %d us on the low pulses width, %d us on the low pulses positions", l, p);
|
||||
|
||||
//password indication bit
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
|
||||
|
||||
//password (on 56 bits)
|
||||
Dbprintf("Password (LSB first on each byte) : %02x %02x %02x %02x %02x %02x %02x", pass1,pass2,pass3,pass4,pass5,pass6,pass7);
|
||||
AddBytePCF7931(pass1, tab, l, p);
|
||||
AddBytePCF7931(pass2, tab, l, p);
|
||||
AddBytePCF7931(pass3, tab, l, p);
|
||||
AddBytePCF7931(pass4, tab, l, p);
|
||||
AddBytePCF7931(pass5, tab, l, p);
|
||||
AddBytePCF7931(pass6, tab, l, p);
|
||||
AddBytePCF7931(pass7, tab, l, p);
|
||||
|
||||
|
||||
//programming mode (0 or 1)
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
|
||||
//block adress on 6 bits
|
||||
Dbprintf("Block address : %02x", address);
|
||||
for (u=0; u<6; u++)
|
||||
{
|
||||
if (address&(1<<u)) { // bit 1
|
||||
parity++;
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
} else{ // bit 0
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
}
|
||||
}
|
||||
|
||||
//byte address on 4 bits
|
||||
Dbprintf("Byte address : %02x", byte);
|
||||
for (u=0; u<4; u++)
|
||||
{
|
||||
if (byte&(1<<u)) { // bit 1
|
||||
parity++;
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
} else{ // bit 0
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
}
|
||||
}
|
||||
|
||||
//data on 8 bits
|
||||
Dbprintf("Data : %02x", data);
|
||||
for (u=0; u<8; u++)
|
||||
{
|
||||
if (data&(1<<u)) { // bit 1
|
||||
parity++;
|
||||
AddBitPCF7931(1, tab, l, p);
|
||||
} else{ //bit 0
|
||||
AddBitPCF7931(0, tab, l, p);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//parity bit
|
||||
if((parity%2)==0){
|
||||
AddBitPCF7931(0, tab, l, p); //even parity
|
||||
}else{
|
||||
AddBitPCF7931(1, tab, l, p);//odd parity
|
||||
}
|
||||
|
||||
//time access memory
|
||||
AddPatternPCF7931(5120+2680, 0, 0, tab);
|
||||
|
||||
//conversion of the scale time
|
||||
for(u=0;u<500;u++){
|
||||
tab[u]=(tab[u] * 3)/2;
|
||||
}
|
||||
|
||||
|
||||
//compennsation of the counter reload
|
||||
while (!comp){
|
||||
comp = 1;
|
||||
for(u=0;tab[u]!=0;u++){
|
||||
if(tab[u] > 0xFFFF){
|
||||
tab[u] -= 0xFFFF;
|
||||
comp = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
SendCmdPCF7931(tab);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Send a trame to a PCF7931 tags
|
||||
* @param tab : array of the data frame
|
||||
*/
|
||||
|
||||
void SendCmdPCF7931(uint32_t * tab){
|
||||
uint16_t u=0;
|
||||
uint16_t tempo=0;
|
||||
|
||||
Dbprintf("SENDING DATA FRAME...");
|
||||
|
||||
FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
|
||||
|
||||
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
|
||||
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU );
|
||||
|
||||
LED_A_ON();
|
||||
|
||||
// steal this pin from the SSP and use it to control the modulation
|
||||
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;
|
||||
AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
|
||||
|
||||
//initialization of the timer
|
||||
AT91C_BASE_PMC->PMC_PCER |= (0x1 << 12) | (0x1 << 13) | (0x1 << 14);
|
||||
AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE;
|
||||
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
|
||||
AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK; //clock at 48/32 MHz
|
||||
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN;
|
||||
AT91C_BASE_TCB->TCB_BCR = 1;
|
||||
|
||||
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
for(u=0;tab[u]!= 0;u+=3){
|
||||
|
||||
|
||||
// modulate antenna
|
||||
HIGH(GPIO_SSC_DOUT);
|
||||
while(tempo != tab[u]){
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
}
|
||||
|
||||
// stop modulating antenna
|
||||
LOW(GPIO_SSC_DOUT);
|
||||
while(tempo != tab[u+1]){
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
}
|
||||
|
||||
|
||||
// modulate antenna
|
||||
HIGH(GPIO_SSC_DOUT);
|
||||
while(tempo != tab[u+2]){
|
||||
tempo = AT91C_BASE_TC0->TC_CV;
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
LED_A_OFF();
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
|
||||
SpinDelay(200);
|
||||
|
||||
|
||||
AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
|
||||
DbpString("FINISH !");
|
||||
DbpString("(Could be usefull to send the same trame many times)");
|
||||
LED(0xFFFF, 1000);
|
||||
}
|
||||
|
||||
|
||||
/* Add a byte for building the data frame of PCF7931 tags
|
||||
* @param b : byte to add
|
||||
* @param tab : array of the data frame
|
||||
* @param l : offset on low pulse width
|
||||
* @param p : offset on low pulse positioning
|
||||
*/
|
||||
|
||||
bool AddBytePCF7931(uint8_t byte, uint32_t * tab, int32_t l, int32_t p){
|
||||
|
||||
uint32_t u;
|
||||
for (u=0; u<8; u++)
|
||||
{
|
||||
if (byte&(1<<u)) { //bit à 1
|
||||
if(AddBitPCF7931(1, tab, l, p)==1)return 1;
|
||||
} else { //bit à 0
|
||||
if(AddBitPCF7931(0, tab, l, p)==1)return 1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Add a bits for building the data frame of PCF7931 tags
|
||||
* @param b : bit to add
|
||||
* @param tab : array of the data frame
|
||||
* @param l : offset on low pulse width
|
||||
* @param p : offset on low pulse positioning
|
||||
*/
|
||||
bool AddBitPCF7931(bool b, uint32_t * tab, int32_t l, int32_t p){
|
||||
uint8_t u = 0;
|
||||
|
||||
for(u=0;tab[u]!=0;u+=3){} //we put the cursor at the last value of the array
|
||||
|
||||
|
||||
if(b==1){ //add a bit 1
|
||||
if(u==0) tab[u] = 34*T0_PCF+p;
|
||||
else tab[u] = 34*T0_PCF+tab[u-1]+p;
|
||||
|
||||
tab[u+1] = 6*T0_PCF+tab[u]+l;
|
||||
tab[u+2] = 88*T0_PCF+tab[u+1]-l-p;
|
||||
return 0;
|
||||
}else{ //add a bit 0
|
||||
|
||||
if(u==0) tab[u] = 98*T0_PCF+p;
|
||||
else tab[u] = 98*T0_PCF+tab[u-1]+p;
|
||||
|
||||
tab[u+1] = 6*T0_PCF+tab[u]+l;
|
||||
tab[u+2] = 24*T0_PCF+tab[u+1]-l-p;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Add a custom pattern in the data frame
|
||||
* @param a : delay of the first high pulse
|
||||
* @param b : delay of the low pulse
|
||||
* @param c : delay of the last high pulse
|
||||
* @param tab : array of the data frame
|
||||
*/
|
||||
bool AddPatternPCF7931(uint32_t a, uint32_t b, uint32_t c, uint32_t * tab){
|
||||
uint32_t u = 0;
|
||||
for(u=0;tab[u]!=0;u+=3){} //we put the cursor at the last value of the array
|
||||
|
||||
if(u==0) tab[u] = a;
|
||||
else tab[u] = a + tab[u-1];
|
||||
|
||||
tab[u+1] = b+tab[u];
|
||||
tab[u+2] = c+tab[u+1];
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue