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fix(i2c_master): Fix issue that i2c clock got wrong after reset,

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Closes https://github.com/espressif/esp-idf/issues/13397
This commit is contained in:
Cao Sen Miao
2024-03-18 20:21:40 +08:00
parent 2291ded9a1
commit ae94c0134b
10 changed files with 339 additions and 8 deletions
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46
components/hal/esp32s3/include/hal/i2c_ll.h
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2020-2023 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2020-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -171,6 +171,50 @@ static inline void i2c_ll_master_set_fractional_divider(i2c_dev_t *hw, uint8_t d
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->clk_conf, sclk_div_b, div_b);
}
/**
* @brief Set fractional divider
*
* @param hw Beginning address of the peripheral registers
* @param div_a The denominator of the frequency divider factor of the i2c function clock
* @param div_b The numerator of the frequency divider factor of the i2c function clock.
*/
static inline void i2c_ll_master_get_fractional_divider(i2c_dev_t *hw, uint32_t *div_a, uint32_t *div_b)
{
/* Set div_a and div_b to 0, as it's not necessary to use them */
*div_a = hw->clk_conf.sclk_div_a;
*div_b = hw->clk_conf.sclk_div_b;
}
/**
* @brief Get clock configurations from registers
*
* @param hw Beginning address of the peripheral registers
* @param div_num div_num
* @param clk_sel clk_sel
* @param clk_active clk_active
*/
static inline void i2c_ll_master_save_clock_configurations(i2c_dev_t *hw, uint32_t *div_num, uint8_t *clk_sel, uint8_t *clk_active)
{
*div_num = HAL_FORCE_READ_U32_REG_FIELD(hw->clk_conf, sclk_div_num);
*clk_sel = hw->clk_conf.sclk_sel;
*clk_active = hw->clk_conf.sclk_active;
}
/**
* @brief Get clock configurations from registers
*
* @param hw Beginning address of the peripheral registers
* @param div_num div_num
* @param clk_sel clk_sel
* @param clk_active clk_active
*/
static inline void i2c_ll_master_restore_clock_configurations(i2c_dev_t *hw, uint32_t div_num, uint8_t clk_sel, uint8_t clk_active)
{
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->clk_conf, sclk_div_num, div_num);
hw->clk_conf.sclk_sel = clk_sel;
hw->clk_conf.sclk_active = clk_active;
}
/**
* @brief Reset I2C txFIFO
*