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Changing timings, this now waits for max 276 bytes while 8051 speaks with card

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iceman1001 2022-12-09 07:39:04 +01:00
commit c5582ab7c7
1 changed files with 9 additions and 5 deletions
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14
armsrc/i2c.c
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@ -208,12 +208,15 @@ static bool I2C_Start(void) {
SDA_H; SDA_H;
I2C_DELAY_1CLK; I2C_DELAY_1CLK;
SCL_H; SCL_H;
if (!WaitSCL_H()) return false; if (!WaitSCL_H())
return false;
I2C_DELAY_2CLK; I2C_DELAY_2CLK;
if (!SCL_read) return false; if (!SCL_read)
if (!SDA_read) return false; return false;
if (!SDA_read)
return false;
SDA_L; SDA_L;
I2C_DELAY_2CLK; I2C_DELAY_2CLK;
@ -228,8 +231,9 @@ static bool I2C_WaitForSim(void) {
// 8051 speaks with smart card. // 8051 speaks with smart card.
// 1000*50*3.07 = 153.5ms // 1000*50*3.07 = 153.5ms
// 1byte transfer == 1ms with max frame being 256bytes // 1000*90*3.07 = 276.3ms
return WaitSCL_H_delay(1000 * 300); // 1byte transfer == 1ms with max frame being 256bytes
return WaitSCL_H_delay(1000 * 90);
} }
// send i2c STOP // send i2c STOP