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chg: smartcard - wait until SCL goes high

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This commit is contained in:
Chris 2018-07-06 11:16:46 +02:00
commit bcffde1198
3 changed files with 50 additions and 28 deletions
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71
common/i2c.c
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@ -111,10 +111,9 @@ void I2C_Reset_EnterBootloader(void) {
// µÈ´ýʱÖÓ±ä¸ß
// Wait for the clock to go High.
volatile uint16_t count;
bool WaitSCL_H(void) {
count = 5000;
volatile uint16_t count = 50000;
while (count--) {
if (SCL_read) {
@ -500,50 +499,70 @@ void I2C_print_status(void) {
DbpString(" FW version................FAILED");
}
void SmartCardAtr(void) {
I2C_Reset_EnterMainProgram();
#define WAIT_SCL_MAX_300
#define WAIT_UNTIL_SCL_GOES_HIGH while (!SCL_read) { I2C_DELAY_1CLK; }
bool WaitSCL_300(void){
volatile uint16_t delay = 300;
while ( SCL_read || delay ) {
SpinDelay(1);
delay--;
}
return (delay == 0);
}
bool GetATR(smart_card_atr_t *card_ptr) {
uint8_t *resp = BigBuf_malloc( sizeof(smart_card_atr_t) );
smart_card_atr_t *card = (smart_card_atr_t *)resp;
if ( card_ptr ) {
card_ptr->atr_len = 0;
memset(card_ptr->atr, 0, sizeof(card_ptr->atr));
}
// Send ATR
// start [C0 01] stop
I2C_WriteCmd(I2C_DEVICE_CMD_GENERATE_ATR, I2C_DEVICE_ADDRESS_MAIN);
// writing takes time.
SpinDelay(50);
// variable delay here.
if (!WaitSCL_300())
return false;
// 8051 speaks with smart card.
WAIT_UNTIL_SCL_GOES_HIGH;
// start [C0 03 start C1 len aa bb cc stop]
uint8_t len = I2C_BufferRead(card->atr, sizeof(card->atr), I2C_DEVICE_CMD_READ, I2C_DEVICE_ADDRESS_MAIN);
uint8_t len = I2C_BufferRead(card_ptr->atr, sizeof(card_ptr->atr), I2C_DEVICE_CMD_READ, I2C_DEVICE_ADDRESS_MAIN);
// remove length byte from the read bytes.
card->atr_len = len - 1;
if ( card_ptr )
card_ptr->atr_len = len - 1;
// print ATR
Dbhexdump(len, resp, false);
return true;
}
void SmartCardAtr(void) {
smart_card_atr_t card;
cmd_send(CMD_ACK, len, 0, 0, resp, sizeof(smart_card_atr_t));
I2C_Reset_EnterMainProgram();
bool isOK = GetATR( &card );
if ( isOK )
Dbhexdump(card.atr_len, card.atr, false);
cmd_send(CMD_ACK, isOK, sizeof(smart_card_atr_t), 0, &card, sizeof(smart_card_atr_t));
}
void SmartCardRaw( uint64_t arg0, uint64_t arg1, uint8_t *data ) {
#define ISO7618_MAX_FRAME 255
#define ISO7618_MAX_FRAME 255
I2C_Reset_EnterMainProgram();
uint8_t buf[30] = {0};
uint8_t len = 0;
uint8_t *resp = BigBuf_malloc(ISO7618_MAX_FRAME);
// Send ATR
// start [C0 01] stop
I2C_WriteCmd(I2C_DEVICE_CMD_GENERATE_ATR, I2C_DEVICE_ADDRESS_MAIN);
// writing takes time.
SpinDelay(50);
smart_card_atr_t card;
// start [C0 03 start C1 len aa bb cc stop] (read ATR)
uint8_t len = I2C_BufferRead(buf, sizeof(buf), I2C_DEVICE_CMD_READ, I2C_DEVICE_ADDRESS_MAIN);
if ( !len ) {
bool isOK = GetATR( &card );
if ( !isOK )
goto out;
}
// Send raw bytes
// start [C0 02] A0 A4 00 00 02 stop
@ -556,7 +575,7 @@ void SmartCardRaw( uint64_t arg0, uint64_t arg1, uint8_t *data ) {
len = I2C_BufferRead(resp, ISO7618_MAX_FRAME, I2C_DEVICE_CMD_READ, I2C_DEVICE_ADDRESS_MAIN);
out:
cmd_send(CMD_ACK, len, 0, 0, resp, len);
cmd_send(CMD_ACK, isOK, len, 0, resp, len);
}
void SmartCardUpgrade(uint64_t arg0) {