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SourceVuESP-IDF Framework and ExamplesESP-IDFi2c_ll_master_cal_bus_clk()

i2c_ll_master_cal_bus_clk() function

Calculate I2C bus frequency

Syntax

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Summary

Declaration

from i2c_ll.h:86

static inline void i2c_ll_master_cal_bus_clk(uint32_t source_clk, uint32_t bus_freq, i2c_hal_clk_config_t *clk_cal);

Arguments

Argument

Declared as

Description

source_clk

uint32_t

I2C source clock

bus_freq

uint32_t

I2C bus frequency

clk_cal

i2c_hal_clk_config_t *

Pointer to accept the clock configuration

Return value

None

References

Code

Location

Referrer

static inline void i2c_ll_master_cal_bus_clk(uint32_t source_clk, uint32_t bus_freq, i2c_hal_clk_config_t *clk_cal)

i2c_ll.h:86

i2c_ll_master_cal_bus_clk(source_freq, scl_freq, &clk_cal);

i2c_hal.c:28

_i2c_hal_set_bus_timing()

Call Tree

i2c_ll_master_cal_bus_clk() is called by 1 function:

_i2c_hal_set_bus_timing()

i2c_ll_master_cal_bus_clk()

Data Use

i2c_ll_master_cal_bus_clk() reads 1 variable and writes 7 variables:

i2c_hal_clk_config_t::scl_high

i2c_ll_master_cal_bus_clk()

i2c_hal_clk_config_t::scl_low

i2c_hal_clk_config_t::scl_high

i2c_hal_clk_config_t::sda_hold

i2c_hal_clk_config_t::sda_sample

i2c_hal_clk_config_t::setup

i2c_hal_clk_config_t::hold

i2c_hal_clk_config_t::tout

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