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27 lines
634 B
27 lines
634 B
#ifndef __I2C_H |
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#define __I2C_H |
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#include "types.h" |
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#define I2C_IN_PROGRESS 0 |
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#define I2C_SUCCESS 1 |
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#define I2C_FAIL 2 |
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typedef int i2c_result; |
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struct i2c_transaction { |
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int address; /* i2c first byte, including address and r/w flag */ |
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int bytes; /* number of bytes to read or write */ |
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unsigned char *data; /* pointer to the data */ |
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i2c_result *result; /* pointer to store the result */ |
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struct i2c_transaction *next; /* NULL or next transaction */ |
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}; |
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void init_i2c(void); |
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int i2c_conreg(void); |
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int i2c_statreg(void); |
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bool i2c_start_transaction(struct i2c_transaction *t); |
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bool i2c_busy(void); |
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#endif /* __I2C_H */
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