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feat(I2C): 通用读写接口支持16位寄存器地址

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hulk
2026-08-06 00:52:51 +08:00
parent 01dc6f85d7
commit 1865389a23
2 changed files with 32 additions and 12 deletions
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Inc/i2c.h
+4 -4
View File
@@ -93,7 +93,7 @@ void i2c_scan(void);
/*! /*!
\brief write 16-bit data to I2C device \brief write 16-bit data to I2C device
\param[in] slave_addr: 7-bit slave address \param[in] slave_addr: 7-bit slave address
\param[in] reg_addr: register address \param[in] reg_addr: register address (16-bit, high byte first)
\param[in] data: pointer to 2-byte data array \param[in] data: pointer to 2-byte data array
\param[out] none \param[out] none
\retval i2c_result_t \retval i2c_result_t
@@ -119,17 +119,17 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
\param[out] none \param[out] none
\retval i2c_result_t: operation result \retval i2c_result_t: operation result
*/ */
i2c_result_t i2c_write(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length); i2c_result_t i2c_write(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint8_t length);
/*! /*!
\brief read data from I2C device with configurable length \brief read data from I2C device with configurable length
\param[in] slave_addr: slave device address (7-bit) \param[in] slave_addr: slave device address (7-bit)
\param[in] reg_addr: register address \param[in] reg_addr: register address (16-bit, high byte first)
\param[out] data: pointer to data buffer \param[out] data: pointer to data buffer
\param[in] length: number of bytes to read (1-255) \param[in] length: number of bytes to read (1-255)
\retval i2c_result_t: operation result \retval i2c_result_t: operation result
*/ */
i2c_result_t i2c_read(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length); i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint8_t length);
/* Pure read response without sub-address phase (for commands that already sent read request parameters) */ /* Pure read response without sub-address phase (for commands that already sent read request parameters) */
/*! /*!
Src/i2c.c
+28 -8
View File
@@ -640,13 +640,13 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
/*! /*!
\brief write data to I2C device with configurable length \brief write data to I2C device with configurable length
\param[in] slave_addr: slave device address (7-bit) \param[in] slave_addr: slave device address (7-bit)
\param[in] reg_addr: register address \param[in] reg_addr: register address (16-bit, high byte first)
\param[in] data: pointer to data buffer \param[in] data: pointer to data buffer
\param[in] length: number of bytes to write (1-255) \param[in] length: number of bytes to write (1-255)
\param[out] none \param[out] none
\retval i2c_result_t: operation result \retval i2c_result_t: operation result
*/ */
i2c_result_t i2c_write(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length) { i2c_result_t i2c_write(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint8_t length) {
i2c_state_t state = I2C_STATE_START; i2c_state_t state = I2C_STATE_START;
uint16_t timeout = 0; uint16_t timeout = 0;
uint8_t retry_count = 0; uint8_t retry_count = 0;
@@ -727,8 +727,18 @@ i2c_result_t i2c_write(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint
break; break;
} }
/* send register address */ /* send register address, high byte first */
i2c_data_transmit(I2C0, reg_addr); if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
state = I2C_STATE_ERROR;
break;
}
i2c_data_transmit(I2C0, (uint8_t)(reg_addr >> 8));
if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
state = I2C_STATE_ERROR;
break;
}
i2c_data_transmit(I2C0, (uint8_t)(reg_addr & 0xFF));
state = I2C_STATE_TRANSMIT_DATA; state = I2C_STATE_TRANSMIT_DATA;
break; break;
@@ -814,12 +824,12 @@ i2c_result_t i2c_write(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint
/*! /*!
\brief read data from I2C device with configurable length \brief read data from I2C device with configurable length
\param[in] slave_addr: slave device address (7-bit) \param[in] slave_addr: slave device address (7-bit)
\param[in] reg_addr: register address \param[in] reg_addr: register address (16-bit, high byte first)
\param[out] data: pointer to data buffer \param[out] data: pointer to data buffer
\param[in] length: number of bytes to read (1-255) \param[in] length: number of bytes to read (1-255)
\retval i2c_result_t: operation result \retval i2c_result_t: operation result
*/ */
i2c_result_t i2c_read(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length) { i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint8_t length) {
i2c_state_t state = I2C_STATE_START; i2c_state_t state = I2C_STATE_START;
uint16_t timeout = 0; uint16_t timeout = 0;
uint8_t retry_count = 0; uint8_t retry_count = 0;
@@ -937,8 +947,18 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8
break; break;
} }
/* send register address */ /* send register address, high byte first */
i2c_data_transmit(I2C0, reg_addr); if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
state = I2C_STATE_ERROR;
break;
}
i2c_data_transmit(I2C0, (uint8_t)(reg_addr >> 8));
if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
state = I2C_STATE_ERROR;
break;
}
i2c_data_transmit(I2C0, (uint8_t)(reg_addr & 0xFF));
state = I2C_STATE_RESTART; state = I2C_STATE_RESTART;
break; break;