Symbols

Files

loading (3/5)...

Summary Syntax Arguments Related References Call Tree Data Use

SourceVuESP-IDF Framework and ExamplesESP-IDFhal_utils_calc_clk_div_frac_fast()

hal_utils_calc_clk_div_frac_fast() function

Calculate the clock division with fractal part fast

Syntax

Show:

Summary

Declaration

Definition

from hal_utils.h:63

uint32_t hal_utils_calc_clk_div_frac_fast(const hal_utils_clk_info_t *clk_info, hal_utils_clk_div_t *clk_div);

Implemented in hal_utils.c:24

Arguments

Argument

Description

clk_info

The clock information

clk_div

The clock division with integral and fractal part

Return value

- 0: Failed to get the result because the division is out of range - others: The real output clock frequency

Notes

Speed first algorithm, Time complexity O(log n). About 8~10 times faster than the accurate algorithm

References

Code

Location

uint32_t hal_utils_calc_clk_div_frac_fast(const hal_utils_clk_info_t *clk_info, hal_utils_clk_div_t *clk_div)

hal_utils.c:24

uint32_t hal_utils_calc_clk_div_frac_fast(const hal_utils_clk_info_t *clk_info, hal_utils_clk_div_t *clk_div);

hal_utils.h:63

Call Tree

hal_utils_calc_clk_div_frac_fast() calls 3 functions:

hal_utils_calc_clk_div_frac_fast()

__assert_func()

hal_utils_gcd()

abort()

Data Use

hal_utils_calc_clk_div_frac_fast() reads 5 variables and writes 3 variables:

hal_utils_clk_info_t::src_freq_hz

hal_utils_clk_info_t::exp_freq_hz

hal_utils_clk_info_t::max_integ

hal_utils_clk_info_t::min_integ

hal_utils_clk_info_t::::max_fract

hal_utils_calc_clk_div_frac_fast()

hal_utils_clk_div_t::integer

hal_utils_clk_div_t::denominator

hal_utils_clk_div_t::numerator

Class Tree

All items filtered out

Override Tree

All items filtered out

Implementations

All items filtered out

Instances

Lifecycle

All items filtered out

hal_utils_calc_clk_div_frac_fast() function

Syntax

Arguments

Return value

Notes

Related Functions

Examples

References

Call Tree

Data Use

Class Tree

Override Tree

Implementations

Instances

Lifecycle