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VisionFive 2
World's first high-performance RISC-V single board computer (SBC) with an integrated GPU
Configure Device Drivers
DMA Driver
I2C APIs

VisionFive 2
World's first high-performance RISC-V single board computer (SBC) with an integrated GPU
VisionFive 2 Lite
A budget-friendly and feature-rich RISC-V single board computer
JH-7110
Word's first mass-produced high-performance RIS-V application processor
VisionFive
World's first generation affordable RISC-V boards designed to run Linux
JH-7100
Intelligent vision processing platform
StarStudio IDE
Integrated Development Environment for Linux and Bera Metal development

I2C APIs

This topic provides details for the I2C APIs.

i2c_add_adapter


Synopsis	`int i2c_add_adapter(struct i2c_adapter *adapter)`
Description	Declares the I2C adapter by using a dynamic bus ID.
Parameter	adapter: The DMA applicant device.
Return	Success: 0 Failure: Error code

i2c_new_client_device


Synopsis	`struct i2c_client i2c_new_client_device(struct i2c_adapter adap, struct i2c_board_info const *info)`
Description	Instantiates an I2C client device.
Parameter	adapter: The DMA applicant device. info: The description of the I2C client device
Return	Success: The pointer to the new I2C client device Failure: Error code

i2c_register_driver


Synopsis	`int i2c_register_driver(struct module owner, struct i2c_driver driver)`
Description	Registers the I2C driver.
Parameter	owner: The sub-module to which the I2C driver belongs driver: The I2C driver to register
Return	Success: 0 Failure: Error code

i2c_transfer_buffer_flags


Synopsis	`int i2c_transfer_buffer_flags(const struct i2c_client client, char buf, int count, u16 flags)`
Description	Issues a single I2C message which transfers data to/from a buffer.
Parameter	client: The handle to the client device buf: The buffer in which data is stored count: The count of bytes to transfer. Must be less than 64 K, as msg.len is u16. flag: The flags to be used for the message, for example, I2C_M_RD for reads.
Return	Success: The count of bytes which are transferred successfully Failure: Error code

i2c_transfer


Synopsis	`int i2c_transfer(struct i2c_adapter adap, struct i2c_msg msgs, int num)`
Description	Executes a single or combined I2C message.
Parameter	adap: The handle to the I2C bus msgs: The parameter includes one or more than one messages to execute before the flag of "STOP" is issued to terminate the operation; Each message begins with a flag of "START". num: The total number of messages to be executed
Return	Success: The total number of messages which are executed successfully Failure: Error code