diff options
Diffstat (limited to 'firmware/libcommon/source/card_emu.c')
| -rw-r--r-- | firmware/libcommon/source/card_emu.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/firmware/libcommon/source/card_emu.c b/firmware/libcommon/source/card_emu.c index 16babf4..1a40d6e 100644 --- a/firmware/libcommon/source/card_emu.c +++ b/firmware/libcommon/source/card_emu.c @@ -1297,8 +1297,24 @@ void card_emu_wt_expired(void *handle) } } -/* shortest ATR possible (uses default speed and no options) */ -static const uint8_t default_atr[] = { 0x3B, 0x00 }; +/* reasonable ATR offering all protocols and voltages + * smartphones might not care, but other readers do + +TS = 0x3B Direct Convention +T0 = 0x80 Y(1): b1000, K: 0 (historical bytes) +TD(1) = 0x80 Y(i+1) = b1000, Protocol T=0 +---- +TD(2) = 0x81 Y(i+1) = b1000, Protocol T=1 +---- +TD(3) = 0x1F Y(i+1) = b0001, Protocol T=15 +---- +TA(4) = 0xC7 Clock stop: no preference - Class accepted by the card: (3G) A 5V B 3V C 1.8V +---- +Historical bytes +TCK = 0x59 correct checksum + + * */ +static const uint8_t default_atr[] = { 0x3B, 0x80, 0x80, 0x81 , 0x1F, 0xC7, 0x59}; static struct card_handle card_handles[NUM_SLOTS]; |