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SourceVuESP-IDF Framework and ExamplesESP-IDFi2c_slave_write()

i2c_slave_write() function

Write buffer to hardware fifo. If write length is larger than hardware fifo, then restore in software buffer.

Syntax

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Summary

Declaration

Definition

from i2c_slave.h:185

esp_err_t i2c_slave_write(i2c_slave_dev_handle_t i2c_slave, const uint8_t *data, uint32_t len, uint32_t *write_len, int timeout_ms);

Implemented in i2c_slave_v2.c:343

Arguments

Argument

Description

i2c_slave

I2C slave device handle that created by `i2c_new_slave_device`.

data

Buffer to write to slave fifo, can pickup by master.

len

In bytes, of `data` buffer.

write_len

In bytes, actually write length.

timeout_ms

Wait timeout, in ms. Note: -1 means wait forever.

Return value

- ESP_OK: I2C slave write success. - ESP_ERR_INVALID_ARG: I2C slave write parameter invalid. - ESP_ERR_TIMEOUT: Operation timeout(larger than xfer_timeout_ms) because the device is busy or hardware crash.

Examples

i2c_slave_write() is referenced by 1 libraries and example projects:

References

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i2c_slave_write() function

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i2c_slave_write() function

Syntax

Arguments

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