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added some helper functions

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iceman1001 2023-10-01 13:05:08 +02:00
commit bb5d61dca7
11 changed files with 111 additions and 28 deletions
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9
armsrc/i2c.h
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@ -30,6 +30,15 @@
#define I2C_DEVICE_CMD_GETVERSION 0x06
#define I2C_DEVICE_CMD_SEND_T0 0x07
// The SIM module v4 supports up to 384 bytes for the length.
#define ISO7816_MAX_FRAME 270
// 8051 speaks with smart card.
// 1000*50*3.07 = 153.5ms
// 1 byte transfer == 1ms with max frame being 256 bytes
#define SIM_WAIT_DELAY 88000 // about 270ms delay // 109773 -- about 337.7ms delay
void I2C_recovery(void);
void I2C_init(bool has_ticks);
void I2C_Reset(void);