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EM4x05: add support for Protect command

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This commit is contained in:
Philippe Teuwen 2020-10-07 18:38:47 +02:00
commit 9962b8769a
5 changed files with 100 additions and 27 deletions
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41
armsrc/lfops.c
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@ -2369,6 +2369,7 @@ int copy_em410x_to_t55xx(uint8_t card, uint8_t clock, uint32_t id_hi, uint32_t i
#define FWD_CMD_LOGIN 0xC
#define FWD_CMD_WRITE 0xA
#define FWD_CMD_READ 0x9
#define FWD_CMD_PROTECT 0x3
#define FWD_CMD_DISABLE 0x5
static uint8_t forwardLink_data[64]; //array of forwarded bits
@ -2573,9 +2574,9 @@ void EM4xWriteWord(uint8_t addr, uint32_t data, uint32_t pwd, uint8_t usepwd) {
SendForward(len);
// Wait 20ms for write to complete?
WaitMS(7);
WaitUS(10820); // tPC+tWEE
DoPartialAcquisition(20, false, 6000, 1000);
DoPartialAcquisition(0, false, 6000, 1000);
StopTicks();
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
@ -2583,6 +2584,42 @@ void EM4xWriteWord(uint8_t addr, uint32_t data, uint32_t pwd, uint8_t usepwd) {
LEDsoff();
}
void EM4xProtectWord(uint32_t data, uint32_t pwd, uint8_t usepwd) {
StartTicks();
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
WaitMS(50);
LED_A_ON();
// clear buffer now so it does not interfere with timing later
BigBuf_Clear_ext(false);
/* should we read answer from Logincommand?
*
* should receive
* 0000 1010 ok.
* 0000 0001 fail
**/
if (usepwd) EM4xLogin(pwd);
forward_ptr = forwardLink_data;
uint8_t len = Prepare_Cmd(FWD_CMD_PROTECT);
len += Prepare_Data(data & 0xFFFF, data >> 16);
SendForward(len);
// Wait 20ms for write to complete?
WaitUS(13640); // tPC+tPR
DoPartialAcquisition(0, false, 6000, 1000);
StopTicks();
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
reply_ng(CMD_LF_EM4X_PROTECTWORD, PM3_SUCCESS, NULL, 0);
LEDsoff();
}
/*
Reading COTAG.