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SourceVuESP-IDF Framework and ExamplesESP-IDFi2c_hw_fsm_reset()

i2c_hw_fsm_reset() function

if the power and SDA/SCL wires are in proper condition, everything works find with reading the slave. If we remove the power supply for the slave during I2C is reading, or directly connect SDA or SCL to ground, this would cause the I2C FSM get stuck in wrong state, all we can do is to reset the I2C hardware in this case.

Syntax

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Summary

Declaration

Definition

static esp_err_t i2c_hw_fsm_reset(i2c_port_t i2c_num);

Implemented in i2c.c:699

Arguments

Argument

i2c_num

References

Code

Location

Referrer

static esp_err_t i2c_hw_fsm_reset(i2c_port_t i2c_num)

static esp_err_t i2c_hw_fsm_reset(i2c_port_t i2c_num);

i2c_hw_fsm_reset(i2c_num);

i2c_master_cmd_begin()

i2c_hw_fsm_reset(i2c_num);

i2c_master_cmd_begin()

i2c_hw_fsm_reset(i2c_num);

i2c_master_cmd_begin()

i2c_hw_fsm_reset(i2c_num);

i2c_master_cmd_begin()

Call Tree

i2c_hw_fsm_reset() is called by 1 function and calls 10 functions:

i2c_master_cmd_begin()

i2c_hw_fsm_reset()

i2c_ll_master_set_filter()

i2c_ll_master_get_filter()

i2c_ll_clear_intr_mask()

i2c_ll_disable_intr_mask()

i2c_hw_disable()

i2c_hw_enable()

i2c_master_clear_bus()

i2c_hal_get_timing_config()

i2c_hal_set_timing_config()

i2c_hal_master_init()

Data Use

i2c_hw_fsm_reset() reads 3 variables:

i2c_hal_context_t::dev

i2c_context_t::hal

i2c_hw_fsm_reset()

Class Tree

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Instances

Lifecycle

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