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card_emu.c: More comments about data structures

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This commit is contained in:
Harald Welte
2015-11-11 19:02:48 +01:00
parent 9d3e38242c
commit 16cf408a49
1 changed files with 12 additions and 11 deletions
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23
firmware/src_simtrace/card_emu.c
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@@ -73,12 +73,13 @@ enum pts_state {
#define _PTS3 4
#define _PCK 5
/* T-PDU state machine states */
enum tpdu_state {
TPDU_S_WAIT_CLA,
TPDU_S_WAIT_INS,
TPDU_S_WAIT_P1,
TPDU_S_WAIT_P2,
TPDU_S_WAIT_P3,
TPDU_S_WAIT_CLA, /* waiting for CLA byte from reader */
TPDU_S_WAIT_INS, /* waiting for INS byte from reader */
TPDU_S_WAIT_P1, /* waiting for P1 byte from reader */
TPDU_S_WAIT_P2, /* waiting for P2 byte from reader */
TPDU_S_WAIT_P3, /* waiting for P3 byte from reader */
TPDU_S_WAIT_PB, /* waiting for Tx of procedure byte */
TPDU_S_WAIT_RX, /* waiitng for more data from reader */
TPDU_S_WAIT_TX, /* waiting for more data to reader */
@@ -98,7 +99,7 @@ struct card_handle {
uint8_t in_reset; /* 1 = RST low, 0 = RST high */
uint8_t clocked; /* 1 = active, 0 = inactive */
/* timing */
/* timing parameters, from PTS */
uint8_t fi;
uint8_t di;
uint8_t wi;
@@ -120,18 +121,18 @@ struct card_handle {
/* PPS / PTS support */
struct {
enum pts_state state;
uint8_t req[6];
uint8_t resp[6];
uint8_t req[6]; /* request bytes */
uint8_t resp[6]; /* response bytes */
} pts;
/* TPDU */
struct {
enum tpdu_state state;
uint8_t hdr[5];
uint8_t hdr[5]; /* CLA INS P1 P2 P3 */
} tpdu;
struct req_ctx *uart_rx_ctx;
struct req_ctx *uart_tx_ctx;
struct req_ctx *uart_rx_ctx; /* UART RX -> USB TX */
struct req_ctx *uart_tx_ctx; /* USB RX -> UART TX */
struct {
uint32_t tx_bytes;