mirror of
https://github.com/Proxmark/proxmark3.git
synced 2025-08-19 12:59:44 -07:00
Fix hf 15 sim (#696)
* added ISO15693 coding for tag messages (CodeIso15693AsTag()) * added ISO15693 decoding for reader commands (Handle15693SampleFromReader()) * send tag inventory response in either high or low speed * some refactoring and formatting
This commit is contained in:
pwpiwi
GitHub
parent
666fa6e1cf
commit
8c6cca0ba1
6 changed files with 789 additions and 566 deletions
File diff suppressed because it is too large
Load diff
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@ -373,13 +373,13 @@ void StartCountSspClk()
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AT91C_BASE_TC1->TC_CMR = AT91C_TC_CLKS_TIMER_DIV1_CLOCK // TC1 Clock = MCK(48MHz)/2 = 24MHz
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| AT91C_TC_CPCSTOP // Stop clock on RC compare
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| AT91C_TC_EEVTEDG_RISING // Trigger on rising edge of Event
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| AT91C_TC_EEVT_TIOB // Event-Source: TIOB1 (= ssp_clk from FPGA = 13,56MHz/16)
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| AT91C_TC_EEVT_TIOB // Event-Source: TIOB1 (= ssp_clk from FPGA = 13,56MHz/16 ... 13,56MHz/4)
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| AT91C_TC_ENETRG // Enable external trigger event
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| AT91C_TC_WAVESEL_UP // Upmode without automatic trigger on RC compare
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| AT91C_TC_WAVE // Waveform Mode
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| AT91C_TC_AEEVT_SET // Set TIOA1 on external event
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| AT91C_TC_ACPC_CLEAR; // Clear TIOA1 on RC Compare
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AT91C_BASE_TC1->TC_RC = 0x04; // RC Compare value = 0x04
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AT91C_BASE_TC1->TC_RC = 0x02; // RC Compare value = 0x02
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// use TC0 to count TIOA1 pulses
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AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // disable TC0
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@ -402,7 +402,7 @@ void StartCountSspClk()
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AT91C_BASE_TC2->TC_CCR = AT91C_TC_CLKEN; // enable TC2
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//
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// synchronize the counter with the ssp_frame signal. Note: FPGA must be in any iso14443 mode, otherwise SSC_FRAME and SSC_CLK signals would not be present
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// synchronize the counter with the ssp_frame signal. Note: FPGA must be in a FPGA mode with SSC transfer, otherwise SSC_FRAME and SSC_CLK signals would not be present
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//
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while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_FRAME)); // wait for ssp_frame to go high (start of frame)
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while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_FRAME); // wait for ssp_frame to be low
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@ -430,15 +430,15 @@ void ResetSspClk(void) {
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}
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uint32_t RAMFUNC GetCountSspClk(){
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uint32_t tmp_count;
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tmp_count = (AT91C_BASE_TC2->TC_CV << 16) | AT91C_BASE_TC0->TC_CV;
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if ((tmp_count & 0x0000ffff) == 0) { //small chance that we may have missed an increment in TC2
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return (AT91C_BASE_TC2->TC_CV << 16);
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}
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else {
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return tmp_count;
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}
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uint32_t GetCountSspClk(){
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uint32_t hi, lo;
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do {
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hi = AT91C_BASE_TC2->TC_CV;
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lo = AT91C_BASE_TC0->TC_CV;
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} while(hi != AT91C_BASE_TC2->TC_CV);
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return (hi << 16) | lo;
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}
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103
client/cmdhf15.c
103
client/cmdhf15.c
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@ -35,6 +35,7 @@
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#include "util.h"
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#include "cmdparser.h"
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#include "iso15693tools.h"
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#include "protocols.h"
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#include "cmdmain.h"
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#define FrameSOF Iso15693FrameSOF
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@ -212,18 +213,17 @@ int getUID(uint8_t *buf)
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for (int retry=0;retry<3; retry++) { // don't give up the at the first try
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req[0]= ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH |
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ISO15_REQ_INVENTORY | ISO15_REQINV_SLOT1;
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req[1]=ISO15_CMD_INVENTORY;
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req[2]=0; // mask length
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reqlen=AddCrc(req,3);
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c.arg[0]=reqlen;
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req[0] = ISO15693_REQ_DATARATE_HIGH | ISO15693_REQ_INVENTORY | ISO15693_REQINV_SLOT1;
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req[1] = ISO15693_INVENTORY;
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req[2] = 0; // mask length
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reqlen = AddCrc(req,3);
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c.arg[0] = reqlen;
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SendCommand(&c);
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if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {
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recv = resp.d.asBytes;
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if (resp.arg[0]>=12 && ISO15_CRC_CHECK==Crc(recv,12)) {
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if (resp.arg[0]>=12 && ISO15693_CRC_CHECK==Crc(recv,12)) {
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memcpy(buf,&recv[2],8);
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return 1;
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}
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@ -424,6 +424,7 @@ int CmdHF15Sim(const char *Cmd)
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PrintAndLog("Starting simulating UID %02X %02X %02X %02X %02X %02X %02X %02X",
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uid[0],uid[1],uid[2],uid[3],uid[4], uid[5], uid[6], uid[7]);
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PrintAndLog("Press the button to stop simulation");
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UsbCommand c = {CMD_SIMTAG_ISO_15693, {0, 0, 0}};
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memcpy(c.d.asBytes,uid,8);
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@ -462,20 +463,19 @@ int CmdHF15DumpMem(const char*Cmd) {
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for (int retry=0; retry<5; retry++) {
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req[0]= ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH |
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ISO15_REQ_NONINVENTORY | ISO15_REQ_ADDRESS;
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req[1]=ISO15_CMD_READ;
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req[0]= ISO15693_REQ_DATARATE_HIGH | ISO15693_REQ_ADDRESS;
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req[1] = ISO15693_READBLOCK;
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memcpy(&req[2],uid,8);
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req[10]=blocknum;
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reqlen=AddCrc(req,11);
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c.arg[0]=reqlen;
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req[10] = blocknum;
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reqlen = AddCrc(req,11);
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c.arg[0] = reqlen;
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SendCommand(&c);
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if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {
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recv = resp.d.asBytes;
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if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15_RES_ERROR)) {
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if (ISO15693_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15693_RES_ERROR)) {
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retry=0;
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*output=0; // reset outputstring
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sprintf(output, "Block %02x ",blocknum);
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@ -499,7 +499,7 @@ int CmdHF15DumpMem(const char*Cmd) {
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// TODO: need fix
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// if (resp.arg[0]<3)
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// PrintAndLog("Lost Connection");
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// else if (ISO15_CRC_CHECK!=Crc(resp.d.asBytes,resp.arg[0]))
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// else if (ISO15693_CRC_CHECK!=Crc(resp.d.asBytes,resp.arg[0]))
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// PrintAndLog("CRC Failed");
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// else
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// PrintAndLog("Tag returned Error %i: %s",recv[1],TagErrorStr(recv[1]));
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@ -547,12 +547,11 @@ int CmdHF15CmdInquiry(const char *Cmd)
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uint8_t *req=c.d.asBytes;
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int reqlen=0;
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req[0]= ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH |
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ISO15_REQ_INVENTORY | ISO15_REQINV_SLOT1;
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req[1]=ISO15_CMD_INVENTORY;
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req[2]=0; // mask length
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req[0] = ISO15693_REQ_DATARATE_HIGH | ISO15693_REQ_INVENTORY | ISO15693_REQINV_SLOT1;
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req[1] = ISO15693_INVENTORY;
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req[2] = 0; // mask length
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reqlen=AddCrc(req,3);
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c.arg[0]=reqlen;
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c.arg[0] = reqlen;
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SendCommand(&c);
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@ -706,7 +705,7 @@ int prepareHF15Cmd(char **cmd, UsbCommand *c, uint8_t iso15cmd[], int iso15cmdle
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while (**cmd==' ' || **cmd=='\t') (*cmd)++;
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if (strstr(*cmd,"-o")==*cmd) {
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req[reqlen]=ISO15_REQ_OPTION;
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req[reqlen]=ISO15693_REQ_OPTION;
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(*cmd)+=2;
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}
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@ -721,36 +720,32 @@ int prepareHF15Cmd(char **cmd, UsbCommand *c, uint8_t iso15cmd[], int iso15cmdle
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case 's':
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case 'S':
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// you must have selected the tag earlier
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req[reqlen++]|= ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH |
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ISO15_REQ_NONINVENTORY | ISO15_REQ_SELECT;
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memcpy(&req[reqlen],&iso15cmd[0],iso15cmdlen);
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reqlen+=iso15cmdlen;
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req[reqlen++] |= ISO15693_REQ_DATARATE_HIGH | ISO15693_REQ_SELECT;
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memcpy(&req[reqlen],&iso15cmd[0],iso15cmdlen);
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reqlen += iso15cmdlen;
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break;
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case 'u':
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case 'U':
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// unaddressed mode may not be supported by all vendors
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req[reqlen++]|= ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH |
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ISO15_REQ_NONINVENTORY;
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memcpy(&req[reqlen],&iso15cmd[0],iso15cmdlen);
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reqlen+=iso15cmdlen;
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req[reqlen++] |= ISO15693_REQ_DATARATE_HIGH;
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memcpy(&req[reqlen],&iso15cmd[0],iso15cmdlen);
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reqlen += iso15cmdlen;
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break;
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case '*':
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// we scan for the UID ourself
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req[reqlen++]|= ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH |
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ISO15_REQ_NONINVENTORY | ISO15_REQ_ADDRESS;
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memcpy(&req[reqlen],&iso15cmd[0],iso15cmdlen);
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req[reqlen++] |= ISO15693_REQ_DATARATE_HIGH | ISO15693_REQ_ADDRESS;
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memcpy(&req[reqlen],&iso15cmd[0],iso15cmdlen);
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reqlen+=iso15cmdlen;
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if (!getUID(uid)) {
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PrintAndLog("No Tag found");
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return 0;
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}
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memcpy(req+reqlen,uid,8);
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PrintAndLog("Detected UID %s",sprintUID(NULL,uid));
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reqlen+=8;
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if (!getUID(uid)) {
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PrintAndLog("No Tag found");
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return 0;
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}
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memcpy(req+reqlen,uid,8);
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PrintAndLog("Detected UID %s",sprintUID(NULL,uid));
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reqlen+=8;
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break;
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default:
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req[reqlen++]|= ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH |
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ISO15_REQ_NONINVENTORY | ISO15_REQ_ADDRESS;
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req[reqlen++] |= ISO15693_REQ_DATARATE_HIGH | ISO15693_REQ_ADDRESS;
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memcpy(&req[reqlen],&iso15cmd[0],iso15cmdlen);
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reqlen+=iso15cmdlen;
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@ -809,7 +804,7 @@ int CmdHF15CmdSysinfo(const char *Cmd) {
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return 0;
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}
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prepareHF15Cmd(&cmd, &c,(uint8_t[]){ISO15_CMD_SYSINFO},1);
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prepareHF15Cmd(&cmd, &c,(uint8_t[]){ISO15693_GET_SYSTEM_INFO},1);
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reqlen=c.arg[0];
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reqlen=AddCrc(req,reqlen);
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@ -819,8 +814,8 @@ int CmdHF15CmdSysinfo(const char *Cmd) {
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if (WaitForResponseTimeout(CMD_ACK,&resp,1000) && resp.arg[0]>2) {
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recv = resp.d.asBytes;
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if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15_RES_ERROR)) {
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if (ISO15693_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15693_RES_ERROR)) {
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*output=0; // reset outputstring
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for ( i=1; i<resp.arg[0]-2; i++) {
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sprintf(output+strlen(output),"%02X ",recv[i]);
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@ -896,7 +891,7 @@ int CmdHF15CmdReadmulti(const char *Cmd) {
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return 0;
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}
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prepareHF15Cmd(&cmd, &c,(uint8_t[]){ISO15_CMD_READMULTI},1);
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prepareHF15Cmd(&cmd, &c,(uint8_t[]){ISO15693_READ_MULTI_BLOCK},1);
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reqlen=c.arg[0];
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pagenum=strtol(cmd,NULL,0);
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@ -920,8 +915,8 @@ int CmdHF15CmdReadmulti(const char *Cmd) {
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if (WaitForResponseTimeout(CMD_ACK,&resp,1000) && resp.arg[0]>2) {
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recv = resp.d.asBytes;
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if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15_RES_ERROR)) {
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if (ISO15693_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15693_RES_ERROR)) {
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*output=0; // reset outputstring
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for ( int i=1; i<resp.arg[0]-2; i++) {
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sprintf(output+strlen(output),"%02X ",recv[i]);
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@ -974,7 +969,7 @@ int CmdHF15CmdRead(const char *Cmd) {
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return 0;
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}
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prepareHF15Cmd(&cmd, &c,(uint8_t[]){ISO15_CMD_READ},1);
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prepareHF15Cmd(&cmd, &c,(uint8_t[]){ISO15693_READBLOCK},1);
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reqlen=c.arg[0];
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pagenum=strtol(cmd,NULL,0);
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@ -993,8 +988,8 @@ int CmdHF15CmdRead(const char *Cmd) {
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if (WaitForResponseTimeout(CMD_ACK,&resp,1000) && resp.arg[0]>2) {
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recv = resp.d.asBytes;
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if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15_RES_ERROR)) {
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if (ISO15693_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15693_RES_ERROR)) {
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*output=0; // reset outputstring
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//sprintf(output, "Block %2i ",blocknum);
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for ( int i=1; i<resp.arg[0]-2; i++) {
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@ -1051,7 +1046,7 @@ int CmdHF15CmdWrite(const char *Cmd) {
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return 0;
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}
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prepareHF15Cmd(&cmd, &c,(uint8_t[]){ISO15_CMD_WRITE},1);
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prepareHF15Cmd(&cmd, &c,(uint8_t[]){ISO15693_WRITEBLOCK},1);
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reqlen=c.arg[0];
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// *cmd -> page num ; *cmd2 -> data
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@ -1086,8 +1081,8 @@ int CmdHF15CmdWrite(const char *Cmd) {
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if (WaitForResponseTimeout(CMD_ACK,&resp,2000) && resp.arg[0]>2) {
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recv = resp.d.asBytes;
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if (ISO15_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15_RES_ERROR)) {
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if (ISO15693_CRC_CHECK==Crc(recv,resp.arg[0])) {
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if (!(recv[0] & ISO15693_RES_ERROR)) {
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PrintAndLog("OK");
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} else {
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PrintAndLog("Tag returned Error %i: %s",recv[1],TagErrorStr(recv[1]));
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@ -5,67 +5,9 @@
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#define ISO15693_H__
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// ISO15693 CRC
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#define ISO15_CRC_PRESET (uint16_t)0xFFFF
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#define ISO15_CRC_POLY (uint16_t)0x8408
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#define ISO15_CRC_CHECK ((uint16_t)(~0xF0B8 & 0xFFFF)) // use this for checking of a correct crc
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// REQUEST FLAGS
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#define ISO15_REQ_SUBCARRIER_SINGLE 0x00 // Tag should respond using one subcarrier (ASK)
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#define ISO15_REQ_SUBCARRIER_TWO 0x01 // Tag should respond using two subcarriers (FSK)
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#define ISO15_REQ_DATARATE_LOW 0x00 // Tag should respond using low data rate
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#define ISO15_REQ_DATARATE_HIGH 0x02 // Tag should respond using high data rate
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#define ISO15_REQ_NONINVENTORY 0x00
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#define ISO15_REQ_INVENTORY 0x04 // This is an inventory request - see inventory flags
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#define ISO15_REQ_PROTOCOL_NONEXT 0x00
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#define ISO15_REQ_PROTOCOL_EXT 0x08 // RFU
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// REQUEST FLAGS when INVENTORY is not set
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#define ISO15_REQ_SELECT 0x10 // only selected cards response
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#define ISO15_REQ_ADDRESS 0x20 // this req contains an address
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#define ISO15_REQ_OPTION 0x40 // Command specific option selector
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//REQUEST FLAGS when INVENTORY is set
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#define ISO15_REQINV_AFI 0x10 // AFI Field is present
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#define ISO15_REQINV_SLOT1 0x20 // 1 Slot
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#define ISO15_REQINV_SLOT16 0x00 // 16 Slots
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#define ISO15_REQINV_OPTION 0x40 // Command specific option selector
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//RESPONSE FLAGS
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#define ISO15_RES_ERROR 0x01
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#define ISO15_RES_EXT 0x08 // Protocol Extention
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// RESPONSE ERROR CODES
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#define ISO15_NOERROR 0x00
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#define ISO15_ERROR_CMD_NOT_SUP 0x01 // Command not supported
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#define ISO15_ERROR_CMD_NOT_REC 0x02 // Command not recognized (eg. parameter error)
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#define ISO15_ERROR_CMD_OPTION 0x03 // Command option not supported
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#define ISO15_ERROR_GENERIC 0x0F // No additional Info about this error
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#define ISO15_ERROR_BLOCK_UNAVAILABLE 0x10
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#define ISO15_ERROR_BLOCK_LOCKED_ALREADY 0x11 // cannot lock again
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#define ISO15_ERROR_BLOCK_LOCKED 0x12 // cannot be changed
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#define ISO15_ERROR_BLOCK_WRITE 0x13 // Writing was unsuccessful
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#define ISO15_ERROR_BLOCL_WRITELOCK 0x14 // Locking was unsuccessful
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// COMMAND CODES
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#define ISO15_CMD_INVENTORY 0x01
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#define ISO15_CMD_STAYQUIET 0x02
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#define ISO15_CMD_READ 0x20
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#define ISO15_CMD_WRITE 0x21
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#define ISO15_CMD_LOCK 0x22
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#define ISO15_CMD_READMULTI 0x23
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#define ISO15_CMD_WRITEMULTI 0x24
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#define ISO15_CMD_SELECT 0x25
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#define ISO15_CMD_RESET 0x26
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#define ISO15_CMD_WRITEAFI 0x27
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#define ISO15_CMD_LOCKAFI 0x28
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#define ISO15_CMD_WRITEDSFID 0x29
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#define ISO15_CMD_LOCKDSFID 0x2A
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#define ISO15_CMD_SYSINFO 0x2B
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#define ISO15_CMD_SECSTATUS 0x2C
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#define ISO15693_CRC_PRESET (uint16_t)0xFFFF
|
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#define ISO15693_CRC_POLY (uint16_t)0x8408
|
||||
#define ISO15693_CRC_CHECK ((uint16_t)(~0xF0B8 & 0xFFFF)) // use this for checking of a correct crc
|
||||
|
||||
uint16_t Iso15693Crc(uint8_t *v, int n);
|
||||
int Iso15693AddCrc(uint8_t *req, int n);
|
||||
|
|
|
|||
|
|
@ -167,22 +167,50 @@ NXP/Philips CUSTOM COMMANDS
|
|||
#define ISO14443B_COMPLETION 0x0F
|
||||
#define ISO14443B_AUTHENTICATE 0x0A
|
||||
|
||||
//First byte is 26
|
||||
#define ISO15693_INVENTORY 0x01
|
||||
#define ISO15693_STAYQUIET 0x02
|
||||
//First byte is 02
|
||||
#define ISO15693_READBLOCK 0x20
|
||||
#define ISO15693_WRITEBLOCK 0x21
|
||||
#define ISO15693_LOCKBLOCK 0x22
|
||||
#define ISO15693_READ_MULTI_BLOCK 0x23
|
||||
#define ISO15693_SELECT 0x25
|
||||
#define ISO15693_RESET_TO_READY 0x26
|
||||
#define ISO15693_WRITE_AFI 0x27
|
||||
#define ISO15693_LOCK_AFI 0x28
|
||||
#define ISO15693_WRITE_DSFID 0x29
|
||||
#define ISO15693_LOCK_DSFID 0x2A
|
||||
#define ISO15693_GET_SYSTEM_INFO 0x2B
|
||||
#define ISO15693_READ_MULTI_SECSTATUS 0x2C
|
||||
// ISO15693 COMMANDS
|
||||
#define ISO15693_INVENTORY 0x01
|
||||
#define ISO15693_STAYQUIET 0x02
|
||||
#define ISO15693_READBLOCK 0x20
|
||||
#define ISO15693_WRITEBLOCK 0x21
|
||||
#define ISO15693_LOCKBLOCK 0x22
|
||||
#define ISO15693_READ_MULTI_BLOCK 0x23
|
||||
#define ISO15693_SELECT 0x25
|
||||
#define ISO15693_RESET_TO_READY 0x26
|
||||
#define ISO15693_WRITE_AFI 0x27
|
||||
#define ISO15693_LOCK_AFI 0x28
|
||||
#define ISO15693_WRITE_DSFID 0x29
|
||||
#define ISO15693_LOCK_DSFID 0x2A
|
||||
#define ISO15693_GET_SYSTEM_INFO 0x2B
|
||||
#define ISO15693_READ_MULTI_SECSTATUS 0x2C
|
||||
|
||||
// ISO15693 REQUEST FLAGS
|
||||
#define ISO15693_REQ_SUBCARRIER_TWO (1<<0)
|
||||
#define ISO15693_REQ_DATARATE_HIGH (1<<1)
|
||||
#define ISO15693_REQ_INVENTORY (1<<2)
|
||||
#define ISO15693_REQ_PROTOCOL_EXT (1<<3) // RFU
|
||||
#define ISO15693_REQ_OPTION (1<<6) // Command specific option selector
|
||||
// when REQ_INVENTORY is not set
|
||||
#define ISO15693_REQ_SELECT (1<<4) // only selected cards response
|
||||
#define ISO15693_REQ_ADDRESS (1<<5) // this req contains an address
|
||||
// when REQ_INVENTORY is set
|
||||
#define ISO15693_REQINV_AFI (1<<4) // AFI Field is present
|
||||
#define ISO15693_REQINV_SLOT1 (1<<5) // 1 Slot (16 slots if not set)
|
||||
|
||||
// ISO15693 RESPONSE FLAGS
|
||||
#define ISO15693_RES_ERROR (1<<0)
|
||||
#define ISO15693_RES_EXT (1<<3) // Protocol Extention
|
||||
|
||||
// ISO15693 RESPONSE ERROR CODES
|
||||
#define ISO15693_NOERROR 0x00
|
||||
#define ISO15693_ERROR_CMD_NOT_SUP 0x01 // Command not supported
|
||||
#define ISO15693_ERROR_CMD_NOT_REC 0x02 // Command not recognized (eg. parameter error)
|
||||
#define ISO15693_ERROR_CMD_OPTION 0x03 // Command option not supported
|
||||
#define ISO15693_ERROR_GENERIC 0x0F // No additional Info about this error
|
||||
#define ISO15693_ERROR_BLOCK_UNAVAILABLE 0x10
|
||||
#define ISO15693_ERROR_BLOCK_LOCKED_ALREADY 0x11 // cannot lock again
|
||||
#define ISO15693_ERROR_BLOCK_LOCKED 0x12 // cannot be changed
|
||||
#define ISO15693_ERROR_BLOCK_WRITE 0x13 // Writing was unsuccessful
|
||||
#define ISO15693_ERROR_BLOCL_WRITELOCK 0x14 // Locking was unsuccessful
|
||||
|
||||
|
||||
// Topaz command set:
|
||||
|
|
|
|||
|
|
@ -16,6 +16,13 @@
|
|||
// Jonathan Westhues, October 2006
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
// possible mod_types:
|
||||
`define NO_MODULATION 3'b000
|
||||
`define MODULATE_BPSK 3'b001
|
||||
`define MODULATE_212K 3'b010
|
||||
`define MODULATE_424K 3'b100
|
||||
`define MODULATE_424K_8BIT 3'b101
|
||||
|
||||
module hi_simulate(
|
||||
pck0, ck_1356meg, ck_1356megb,
|
||||
pwr_lo, pwr_hi, pwr_oe1, pwr_oe2, pwr_oe3, pwr_oe4,
|
||||
|
|
@ -35,10 +42,6 @@ module hi_simulate(
|
|||
output dbg;
|
||||
input [2:0] mod_type;
|
||||
|
||||
// Power amp goes between LOW and tri-state, so pwr_hi (and pwr_lo) can
|
||||
// always be low.
|
||||
assign pwr_hi = 1'b0;
|
||||
assign pwr_lo = 1'b0;
|
||||
|
||||
// The comparator with hysteresis on the output from the peak detector.
|
||||
reg after_hysteresis;
|
||||
|
|
@ -52,8 +55,8 @@ end
|
|||
|
||||
|
||||
// Divide 13.56 MHz to produce various frequencies for SSP_CLK
|
||||
// and modulation. 11 bits allow for factors of up to /128.
|
||||
reg [10:0] ssp_clk_divider;
|
||||
// and modulation.
|
||||
reg [7:0] ssp_clk_divider;
|
||||
|
||||
always @(posedge adc_clk)
|
||||
ssp_clk_divider <= (ssp_clk_divider + 1);
|
||||
|
|
@ -62,10 +65,10 @@ reg ssp_clk;
|
|||
|
||||
always @(negedge adc_clk)
|
||||
begin
|
||||
if(mod_type == 3'b101)
|
||||
if(mod_type == `MODULATE_424K_8BIT)
|
||||
// Get bit every at 53KHz (every 8th carrier bit of 424kHz)
|
||||
ssp_clk <= ssp_clk_divider[7];
|
||||
else if(mod_type == 3'b010)
|
||||
else if(mod_type == `MODULATE_212K)
|
||||
// Get next bit at 212kHz
|
||||
ssp_clk <= ssp_clk_divider[5];
|
||||
else
|
||||
|
|
@ -89,7 +92,7 @@ always @(negedge ssp_clk)
|
|||
|
||||
reg ssp_frame;
|
||||
always @(ssp_frame_divider_to_arm or ssp_frame_divider_from_arm or mod_type)
|
||||
if(mod_type == 3'b000) // not modulating, so listening, to ARM
|
||||
if(mod_type == `NO_MODULATION) // not modulating, so listening, to ARM
|
||||
ssp_frame = (ssp_frame_divider_to_arm == 3'b000);
|
||||
else
|
||||
ssp_frame = (ssp_frame_divider_from_arm == 3'b000);
|
||||
|
|
@ -102,27 +105,29 @@ always @(posedge ssp_clk)
|
|||
// Modulating carrier frequency is fc/64 (212kHz) to fc/16 (848kHz). Reuse ssp_clk divider for that.
|
||||
reg modulating_carrier;
|
||||
always @(mod_type or ssp_clk or ssp_dout)
|
||||
if(mod_type == 3'b000)
|
||||
if (mod_type == `NO_MODULATION)
|
||||
modulating_carrier <= 1'b0; // no modulation
|
||||
else if(mod_type == 3'b001)
|
||||
else if (mod_type == `MODULATE_BPSK)
|
||||
modulating_carrier <= ssp_dout ^ ssp_clk_divider[3]; // XOR means BPSK
|
||||
else if(mod_type == 3'b010)
|
||||
else if (mod_type == `MODULATE_212K)
|
||||
modulating_carrier <= ssp_dout & ssp_clk_divider[5]; // switch 212kHz subcarrier on/off
|
||||
else if(mod_type == 3'b100 || mod_type == 3'b101)
|
||||
else if (mod_type == `MODULATE_424K || mod_type == `MODULATE_424K_8BIT)
|
||||
modulating_carrier <= ssp_dout & ssp_clk_divider[4]; // switch 424kHz modulation on/off
|
||||
else
|
||||
modulating_carrier <= 1'b0; // yet unused
|
||||
|
||||
// This one is all LF, so doesn't matter
|
||||
assign pwr_oe2 = modulating_carrier;
|
||||
|
||||
// Toggle only one of these, since we are already producing much deeper
|
||||
// Load modulation. Toggle only one of these, since we are already producing much deeper
|
||||
// modulation than a real tag would.
|
||||
assign pwr_oe1 = modulating_carrier;
|
||||
assign pwr_oe4 = modulating_carrier;
|
||||
assign pwr_hi = 1'b0; // HF antenna connected to GND
|
||||
assign pwr_oe3 = 1'b0; // 10k Load
|
||||
assign pwr_oe1 = modulating_carrier; // 33 Ohms Load
|
||||
assign pwr_oe4 = modulating_carrier; // 33 Ohms Load
|
||||
|
||||
// This is all LF and doesn't matter
|
||||
assign pwr_lo = 1'b0;
|
||||
assign pwr_oe2 = 1'b0;
|
||||
|
||||
// This one is always on, so that we can watch the carrier.
|
||||
assign pwr_oe3 = 1'b0;
|
||||
|
||||
assign dbg = ssp_din;
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue