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chg:i2c...

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This commit is contained in:
Chris 2018-07-06 17:20:02 +02:00
parent aef053879c
commit bda57d3818
1 changed files with 3 additions and 2 deletions

5
common/i2c.c
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@ -134,6 +134,7 @@ bool WaitSCL_L_300ms(void){
volatile uint16_t delay = 300; volatile uint16_t delay = 300;
while ( delay-- ) { while ( delay-- ) {
// exit on SCL LOW
if (!SCL_read) { if (!SCL_read) {
if ( MF_DBGLEVEL > 3 ) Dbprintf(" 300ms SCL delay counter %d", delay); if ( MF_DBGLEVEL > 3 ) Dbprintf(" 300ms SCL delay counter %d", delay);
return true; return true;
@ -531,13 +532,13 @@ bool GetATR(smart_card_atr_t *card_ptr) {
I2C_WriteCmd(I2C_DEVICE_CMD_GENERATE_ATR, I2C_DEVICE_ADDRESS_MAIN); I2C_WriteCmd(I2C_DEVICE_CMD_GENERATE_ATR, I2C_DEVICE_ADDRESS_MAIN);
// variable delay here. // variable delay here.
if (!WaitSCL_300ms()) { if (!WaitSCL_L_300ms()) {
if ( MF_DBGLEVEL > 3 ) DbpString(" 300ms SCL delay - timed out"); if ( MF_DBGLEVEL > 3 ) DbpString(" 300ms SCL delay - timed out");
return false; return false;
} }
// 8051 speaks with smart card. // 8051 speaks with smart card.
// 1000*50*3.07 = 1530.5ms // 1000*50*3.07 = 153.5ms
if (!WaitSCL_H_delay(1000*50) ) { if (!WaitSCL_H_delay(1000*50) ) {
if ( MF_DBGLEVEL > 3 ) DbpString("wait for SCL HIGH - timed out"); if ( MF_DBGLEVEL > 3 ) DbpString("wait for SCL HIGH - timed out");
return false; return false;