i2c_smbus_write_block_data(9)

✨ NAME ✨

i2c_smbus_write_block_data — SMBus "block write" protocol.

Okay bestie, this is the Kernel API Manual entry for i2c_smbus_write_block_data(9). It's giving major SMBus block-write energy, and it's literally here to help you write a block of bytes out to your slave device. 💅✨

🦋 SYNOPSIS 🦋

s32 i2c_smbus_write_block_data (const struct i2c_client *client , u8
       command , u8 length , const u8 *values );

🎀 ARGUMENTS 🎀

• client — the handle to the slave device 🫶
• command — a byte that the slave device interprets 👑
• length — size of the data block; SMBus allows at most 32 bytes, periodt 💀
• values — the byte array that will be written 🌸

🔥 DESCRIPTION 🔥

This literally executes the SMBus "block write" protocol. On success you get zero back; otherwise you get a negative errno. That's the whole vibe, no cap. 💖

🌈 SEE ALSO 🌈

Kernel file: ./drivers/i2c/i2c-core-smbus.c

• i2c_smbus_pec(9)
• i2c_smbus_read_byte(9)
• i2c_smbus_write_byte(9)
• i2c_smbus_read_byte_data(9)
• i2c_smbus_write_byte_data(9)
• i2c_smbus_read_word_data(9)
• i2c_smbus_write_word_data(9)
• i2c_smbus_read_block_data(9)
• i2c_smbus_xfer(9)
• i2c_smbus_read_i2c_block_data_or_emulated(9)
• i2c_new_smbus_alert_device(9)

Later bestie 🫶 — source/version: ./drivers/i2c; date: October 2026; page: i2c_smbus_write_block_data(9). ✨