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LEDC: improved support for ESP32-C3 and refactored divisor calculation

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As ESP32C3 does not have support for REF_TICK source clock, it is now not
possible to select it anymore.
Auto cfg clock has been improved for all boards.
This commit is contained in:
Omar Chebib
2021-06-02 20:19:09 +08:00
parent 534cd5bb31
commit aa2ca7dd94
17 changed files with 417 additions and 242 deletions
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34
components/hal/esp32c3/include/hal/ledc_ll.h
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@@ -26,6 +26,13 @@ extern "C" {
#endif
#define LEDC_LL_GET_HW() &LEDC
#define LEDC_LL_FRACTIONAL_BITS (8)
#define LEDC_LL_FRACTIONAL_MAX ((1 << LEDC_LL_FRACTIONAL_BITS) - 1)
#define LEDC_LL_GLOBAL_CLOCKS { \
LEDC_USE_APB_CLK, \
LEDC_USE_XTAL_CLK, \
LEDC_USE_RTC8M_CLK, \
}
/**
* @brief Set LEDC low speed timer clock
@@ -155,27 +162,6 @@ static inline void ledc_ll_get_clock_divider(ledc_dev_t *hw, ledc_mode_t speed_m
*clock_divider = hw->timer_group[speed_mode].timer[timer_sel].conf.clock_divider;
}
/**
* @brief Set LEDC timer clock source
*
* @param hw Beginning address of the peripheral registers
* @param speed_mode LEDC speed_mode, high-speed mode or low-speed mode
* @param timer_sel LEDC timer index (0-3), select from ledc_timer_t
* @param clk_src Timer clock source
*
* @return None
*/
static inline void ledc_ll_set_clock_source(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel, ledc_clk_src_t clk_src)
{
if (clk_src == LEDC_REF_TICK) {
//REF_TICK can only be used when APB is selected.
hw->timer_group[speed_mode].timer[timer_sel].conf.tick_sel = 1;
hw->conf.apb_clk_sel = 1;
} else {
hw->timer_group[speed_mode].timer[timer_sel].conf.tick_sel = 0;
}
}
/**
* @brief Get LEDC timer clock source
*
@@ -188,11 +174,7 @@ static inline void ledc_ll_set_clock_source(ledc_dev_t *hw, ledc_mode_t speed_mo
*/
static inline void ledc_ll_get_clock_source(ledc_dev_t *hw, ledc_mode_t speed_mode, ledc_timer_t timer_sel, ledc_clk_src_t *clk_src)
{
if (hw->timer_group[speed_mode].timer[timer_sel].conf.tick_sel == 1) {
*clk_src = LEDC_REF_TICK;
} else {
*clk_src = LEDC_APB_CLK;
}
*clk_src = LEDC_APB_CLK;
}
/**