43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
/* File: i2c.h */
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/**
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* @file i2c.h
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* @brief Interface for a minimal blocking I²C master driver (MSP430FR2355).
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*
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* Provides initialization, blocking write, and single-byte register read.
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*
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* @author
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* Frederik Beimgraben
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* Minh Dan Cam
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* Luis Meyer
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* @date 2025-07-02
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*/
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#ifndef I2C_H
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#define I2C_H
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#include <stdint.h>
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#include <stdbool.h>
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/**
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* @brief Initialize the I2C module as master (SMCLK/20 → 50 kHz SCL).
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*/
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void i2c_init(void);
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/**
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* @brief Send a data packet to an I2C slave.
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* @param slaveAddress 7-bit address of the target device.
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* @param data Pointer to the data buffer to send.
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* @param length Number of bytes to send.
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*/
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void i2c_write(uint8_t slaveAddress, char data[], uint8_t length);
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/**
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* @brief Read a single byte from a specific register of an I2C slave.
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* @param slaveAddress 7-bit address of the target device.
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* @param registerAddress Register address to read.
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* @return The byte read from the device.
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*/
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char i2c_read_reg(uint8_t slaveAddress, uint8_t registerAddress);
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#endif /* I2C_H */
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