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fix(ledc): fix ledc driver 100% duty cycle configuration
Update ledc duty cycle value range in doxygen. Fix duty configuration error at 100% duty cycle for ESP32. Improve LEDC API doxygen. Closes https://github.com/espressif/esp-idf/pull/11516 Closes https://github.com/espressif/esp-idf/issues/12083
This commit is contained in:
Song Ruo Jing
parent
16e5b4f80d
commit
821f7b0498
@ -38,12 +38,12 @@ extern "C" {
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*/
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typedef struct {
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int gpio_num; /*!< the LEDC output gpio_num, if you want to use gpio16, gpio_num = 16 */
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ledc_mode_t speed_mode; /*!< LEDC speed speed_mode, high-speed mode or low-speed mode */
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ledc_mode_t speed_mode; /*!< LEDC speed speed_mode, high-speed mode (only exists on esp32) or low-speed mode */
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ledc_channel_t channel; /*!< LEDC channel (0 - LEDC_CHANNEL_MAX-1) */
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ledc_intr_type_t intr_type; /*!< configure interrupt, Fade interrupt enable or Fade interrupt disable */
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ledc_timer_t timer_sel; /*!< Select the timer source of channel (0 - LEDC_TIMER_MAX-1) */
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uint32_t duty; /*!< LEDC channel duty, the range of duty setting is [0, (2**duty_resolution)] */
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int hpoint; /*!< LEDC channel hpoint value, the max value is 0xfffff */
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int hpoint; /*!< LEDC channel hpoint value, the range is [0, (2**duty_resolution)-1] */
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struct {
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unsigned int output_invert: 1;/*!< Enable (1) or disable (0) gpio output invert */
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} flags; /*!< LEDC flags */
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@ -54,7 +54,7 @@ typedef struct {
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* @brief Configuration parameters of LEDC timer for ledc_timer_config function
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*/
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typedef struct {
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ledc_mode_t speed_mode; /*!< LEDC speed speed_mode, high-speed mode or low-speed mode */
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ledc_mode_t speed_mode; /*!< LEDC speed speed_mode, high-speed mode (only exists on esp32) or low-speed mode */
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ledc_timer_bit_t duty_resolution; /*!< LEDC channel duty resolution */
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ledc_timer_t timer_num; /*!< The timer source of channel (0 - LEDC_TIMER_MAX-1) */
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uint32_t freq_hz; /*!< LEDC timer frequency (Hz) */
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@ -88,7 +88,7 @@ typedef struct {
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ledc_cb_event_t event; /**< Event name */
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uint32_t speed_mode; /**< Speed mode of the LEDC channel group */
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uint32_t channel; /**< LEDC channel (0 - LEDC_CHANNEL_MAX-1) */
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uint32_t duty; /**< LEDC current duty of the channel, the range of duty is [0, (2**duty_resolution) - 1] */
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uint32_t duty; /**< LEDC current duty of the channel, the range of duty is [0, (2**duty_resolution)] */
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} ledc_cb_param_t;
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/**
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@ -135,6 +135,7 @@ esp_err_t ledc_timer_config(const ledc_timer_config_t *timer_conf);
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/**
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* @brief LEDC update channel parameters
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*
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* @note Call this function to activate the LEDC updated parameters.
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* After ledc_set_duty, we need to call this function to update the settings.
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* And the new LEDC parameters don't take effect until the next PWM cycle.
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@ -144,13 +145,13 @@ esp_err_t ledc_timer_config(const ledc_timer_config_t *timer_conf);
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* @note If `CONFIG_LEDC_CTRL_FUNC_IN_IRAM` is enabled, this function will be placed in the IRAM by linker,
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* makes it possible to execute even when the Cache is disabled.
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* @note This function is allowed to run within ISR context.
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*
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*/
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esp_err_t ledc_update_duty(ledc_mode_t speed_mode, ledc_channel_t channel);
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@ -177,6 +178,7 @@ esp_err_t ledc_set_pin(int gpio_num, ledc_mode_t speed_mode, ledc_channel_t ledc
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* @note If `CONFIG_LEDC_CTRL_FUNC_IN_IRAM` is enabled, this function will be placed in the IRAM by linker,
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* makes it possible to execute even when the Cache is disabled.
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* @note This function is allowed to run within ISR context.
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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* @param idle_level Set output idle level after LEDC stops.
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@ -216,15 +218,17 @@ uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num);
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/**
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* @brief LEDC set duty and hpoint value
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* Only after calling ledc_update_duty will the duty update.
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*
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* @note ledc_set_duty, ledc_set_duty_with_hpoint and ledc_update_duty are not thread-safe, do not call these functions to
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* control one LEDC channel in different tasks at the same time.
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* A thread-safe version of API is ledc_set_duty_and_update
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* @note For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel.
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* Other duty operations will have to wait until the fade operation has finished.
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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* @param duty Set the LEDC duty, the range of duty setting is [0, (2**duty_resolution) - 1]
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* @param hpoint Set the LEDC hpoint value(max: 0xfffff)
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* @param duty Set the LEDC duty, the range of duty setting is [0, (2**duty_resolution)]
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* @param hpoint Set the LEDC hpoint value, the range is [0, (2**duty_resolution)-1]
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*
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* @return
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* - ESP_OK Success
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@ -237,6 +241,7 @@ esp_err_t ledc_set_duty_with_hpoint(ledc_mode_t speed_mode, ledc_channel_t chann
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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*
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* @return
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* - LEDC_ERR_VAL if parameter error
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* - Others Current hpoint value of LEDC channel
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@ -247,14 +252,16 @@ int ledc_get_hpoint(ledc_mode_t speed_mode, ledc_channel_t channel);
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* @brief LEDC set duty
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* This function do not change the hpoint value of this channel. if needed, please call ledc_set_duty_with_hpoint.
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* only after calling ledc_update_duty will the duty update.
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*
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* @note ledc_set_duty, ledc_set_duty_with_hpoint and ledc_update_duty are not thread-safe, do not call these functions to
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* control one LEDC channel in different tasks at the same time.
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* A thread-safe version of API is ledc_set_duty_and_update.
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* @note For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel.
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* Other duty operations will have to wait until the fade operation has finished.
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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* @param duty Set the LEDC duty, the range of duty setting is [0, (2**duty_resolution) - 1]
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* @param duty Set the LEDC duty, the range of duty setting is [0, (2**duty_resolution)]
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*
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* @return
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* - ESP_OK Success
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@ -280,11 +287,13 @@ uint32_t ledc_get_duty(ledc_mode_t speed_mode, ledc_channel_t channel);
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/**
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* @brief LEDC set gradient
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* Set LEDC gradient, After the function calls the ledc_update_duty function, the function can take effect.
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*
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* @note For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel.
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* Other duty operations will have to wait until the fade operation has finished.
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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* @param duty Set the start of the gradient duty, the range of duty setting is [0, (2**duty_resolution) - 1]
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* @param duty Set the start of the gradient duty, the range of duty setting is [0, (2**duty_resolution)]
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* @param fade_direction Set the direction of the gradient
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* @param step_num Set the number of the gradient
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* @param duty_cycle_num Set how many LEDC tick each time the gradient lasts
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@ -310,7 +319,8 @@ esp_err_t ledc_set_fade(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Function pointer error.
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Failed to find available interrupt source
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*/
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esp_err_t ledc_isr_register(void (*fn)(void *), void *arg, int intr_alloc_flags, ledc_isr_handle_t *handle);
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@ -320,7 +330,7 @@ esp_err_t ledc_isr_register(void (*fn)(void *), void *arg, int intr_alloc_flags,
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param timer_sel Timer index (0-3), there are 4 timers in LEDC module
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* @param clock_divider Timer clock divide value, the timer clock is divided from the selected clock source
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* @param duty_resolution Resolution of duty setting in number of bits. The range of duty values is [0, (2**duty_resolution)]
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* @param duty_resolution Resolution of duty setting in number of bits. The range is [1, SOC_LEDC_TIMER_BIT_WIDTH]
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* @param clk_src Select LEDC source clock.
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*
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* @return
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@ -350,7 +360,6 @@ esp_err_t ledc_timer_rst(ledc_mode_t speed_mode, ledc_timer_t timer_sel);
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* @return
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_OK Success
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*
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*/
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esp_err_t ledc_timer_pause(ledc_mode_t speed_mode, ledc_timer_t timer_sel);
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@ -381,6 +390,7 @@ esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, ledc_channel_t channel
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/**
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* @brief Set LEDC fade function.
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*
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* @note Call ledc_fade_func_install() once before calling this function.
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* Call ledc_fade_start() after this to start fading.
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* @note ledc_set_fade_with_step, ledc_set_fade_with_time and ledc_fade_start are not thread-safe, do not call these functions to
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@ -388,22 +398,24 @@ esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, ledc_channel_t channel
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* A thread-safe version of API is ledc_set_fade_step_and_start
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* @note For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel.
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* Other duty operations will have to wait until the fade operation has finished.
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode. ,
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel index (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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* @param target_duty Target duty of fading [0, (2**duty_resolution) - 1]
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* @param target_duty Target duty of fading [0, (2**duty_resolution)]
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* @param scale Controls the increase or decrease step scale.
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* @param cycle_num increase or decrease the duty every cycle_num cycles
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*
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* @return
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Fade function not installed.
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_INVALID_STATE Channel not initialized
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* - ESP_FAIL Fade function init error
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*/
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esp_err_t ledc_set_fade_with_step(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, uint32_t scale, uint32_t cycle_num);
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/**
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* @brief Set LEDC fade function, with a limited time.
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*
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* @note Call ledc_fade_func_install() once before calling this function.
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* Call ledc_fade_start() after this to start fading.
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* @note ledc_set_fade_with_step, ledc_set_fade_with_time and ledc_fade_start are not thread-safe, do not call these functions to
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@ -411,43 +423,48 @@ esp_err_t ledc_set_fade_with_step(ledc_mode_t speed_mode, ledc_channel_t channel
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* A thread-safe version of API is ledc_set_fade_step_and_start
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* @note For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel.
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* Other duty operations will have to wait until the fade operation has finished.
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode. ,
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel index (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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* @param target_duty Target duty of fading [0, (2**duty_resolution) - 1]
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* @param target_duty Target duty of fading [0, (2**duty_resolution)]
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* @param max_fade_time_ms The maximum time of the fading ( ms ).
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*
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* @return
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Fade function not installed.
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_INVALID_STATE Channel not initialized
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* - ESP_FAIL Fade function init error
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*/
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esp_err_t ledc_set_fade_with_time(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, int max_fade_time_ms);
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/**
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* @brief Install LEDC fade function. This function will occupy interrupt of LEDC module.
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*
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* @param intr_alloc_flags Flags used to allocate the interrupt. One or multiple (ORred)
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* ESP_INTR_FLAG_* values. See esp_intr_alloc.h for more info.
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Fade function already installed.
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* - ESP_ERR_INVALID_ARG Intr flag error
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* - ESP_ERR_NOT_FOUND Failed to find available interrupt source
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* - ESP_ERR_INVALID_STATE Fade function already installed
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*/
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esp_err_t ledc_fade_func_install(int intr_alloc_flags);
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/**
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* @brief Uninstall LEDC fade function.
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*
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*/
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void ledc_fade_func_uninstall(void);
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/**
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* @brief Start LEDC fading.
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*
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* @note Call ledc_fade_func_install() once before calling this function.
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* Call this API right after ledc_set_fade_with_time or ledc_set_fade_with_step before to start fading.
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* @note Starting fade operation with this API is not thread-safe, use with care.
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* @note For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel.
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* Other duty operations will have to wait until the fade operation has finished.
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel number
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* @param fade_mode Whether to block until fading done. See ledc_types.h ledc_fade_mode_t for more info.
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@ -455,7 +472,7 @@ void ledc_fade_func_uninstall(void);
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Fade function not installed.
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* - ESP_ERR_INVALID_STATE Channel not initialized or fade function not installed.
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* - ESP_ERR_INVALID_ARG Parameter error.
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*/
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esp_err_t ledc_fade_start(ledc_mode_t speed_mode, ledc_channel_t channel, ledc_fade_mode_t fade_mode);
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@ -463,81 +480,99 @@ esp_err_t ledc_fade_start(ledc_mode_t speed_mode, ledc_channel_t channel, ledc_f
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#if SOC_LEDC_SUPPORT_FADE_STOP
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/**
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* @brief Stop LEDC fading. The duty of the channel is garanteed to be fixed at most one PWM cycle after the function returns.
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*
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* @note This API can be called if a new fixed duty or a new fade want to be set while the last fade operation is still running in progress.
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* @note Call this API will abort the fading operation only if it was started by calling ledc_fade_start with LEDC_FADE_NO_WAIT mode.
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* @note If a fade was started with LEDC_FADE_WAIT_DONE mode, calling this API afterwards has no use in stopping the fade. Fade will continue until it reachs the target duty.
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel number
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Fade function not installed.
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* - ESP_ERR_INVALID_ARG Parameter error.
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* - ESP_ERR_INVALID_STATE Channel not initialized
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_FAIL Fade function init error
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*/
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esp_err_t ledc_fade_stop(ledc_mode_t speed_mode, ledc_channel_t channel);
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#endif //SOC_LEDC_SUPPORT_FADE_STOP
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/**
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* @brief A thread-safe API to set duty for LEDC channel and return when duty updated.
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*
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* @note For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel.
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* Other duty operations will have to wait until the fade operation has finished.
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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* @param duty Set the LEDC duty, the range of duty setting is [0, (2**duty_resolution) - 1]
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* @param hpoint Set the LEDC hpoint value(max: 0xfffff)
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* @param duty Set the LEDC duty, the range of duty setting is [0, (2**duty_resolution)]
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* @param hpoint Set the LEDC hpoint value, the range is [0, (2**duty_resolution)-1]
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Channel not initialized
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_FAIL Fade function init error
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*/
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esp_err_t ledc_set_duty_and_update(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty, uint32_t hpoint);
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/**
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* @brief A thread-safe API to set and start LEDC fade function, with a limited time.
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*
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* @note Call ledc_fade_func_install() once, before calling this function.
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* @note For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel.
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* Other duty operations will have to wait until the fade operation has finished.
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*
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* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
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* @param channel LEDC channel index (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
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* @param target_duty Target duty of fading [0, (2**duty_resolution) - 1]
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* @param target_duty Target duty of fading [0, (2**duty_resolution)]
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* @param max_fade_time_ms The maximum time of the fading ( ms ).
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* @param fade_mode choose blocking or non-blocking mode
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*
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* @return
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Fade function not installed.
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_INVALID_STATE Channel not initialized
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* - ESP_FAIL Fade function init error
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*/
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esp_err_t ledc_set_fade_time_and_start(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, uint32_t max_fade_time_ms, ledc_fade_mode_t fade_mode);
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/**
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* @brief A thread-safe API to set and start LEDC fade function.
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*
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* @note Call ledc_fade_func_install() once before calling this function.
|
||||
* @note For ESP32, hardware does not support any duty change while a fade operation is running in progress on that channel.
|
||||
* Other duty operations will have to wait until the fade operation has finished.
|
||||
*
|
||||
* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
|
||||
* @param channel LEDC channel index (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
|
||||
* @param target_duty Target duty of fading [0, (2**duty_resolution) - 1]
|
||||
* @param target_duty Target duty of fading [0, (2**duty_resolution)]
|
||||
* @param scale Controls the increase or decrease step scale.
|
||||
* @param cycle_num increase or decrease the duty every cycle_num cycles
|
||||
* @param fade_mode choose blocking or non-blocking mode
|
||||
*
|
||||
* @return
|
||||
* - ESP_ERR_INVALID_ARG Parameter error
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_INVALID_STATE Fade function not installed.
|
||||
* - ESP_ERR_INVALID_ARG Parameter error
|
||||
* - ESP_ERR_INVALID_STATE Channel not initialized
|
||||
* - ESP_FAIL Fade function init error
|
||||
*/
|
||||
esp_err_t ledc_set_fade_step_and_start(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, uint32_t scale, uint32_t cycle_num, ledc_fade_mode_t fade_mode);
|
||||
|
||||
/**
|
||||
* @brief LEDC callback registration function
|
||||
*
|
||||
* @note The callback is called from an ISR, it must never attempt to block, and any FreeRTOS API called must be ISR capable.
|
||||
*
|
||||
* @param speed_mode Select the LEDC channel group with specified speed mode. Note that not all targets support high speed mode.
|
||||
* @param channel LEDC channel index (0 - LEDC_CHANNEL_MAX-1), select from ledc_channel_t
|
||||
* @param cbs Group of LEDC callback functions
|
||||
* @param user_arg user registered data for the callback function
|
||||
*
|
||||
* @return
|
||||
* - ESP_ERR_INVALID_ARG Parameter error
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_INVALID_STATE Fade function not installed.
|
||||
* - ESP_ERR_INVALID_ARG Parameter error
|
||||
* - ESP_ERR_INVALID_STATE Channel not initialized
|
||||
* - ESP_FAIL Fade function init error
|
||||
*/
|
||||
esp_err_t ledc_cb_register(ledc_mode_t speed_mode, ledc_channel_t channel, ledc_cbs_t *cbs, void *user_arg);
|
||||
@ -608,10 +643,11 @@ typedef struct {
|
||||
* @param start_duty Set the start of the gradient duty, the range of duty setting is [0, (2**duty_resolution)]
|
||||
* @param fade_params_list Pointer to the array of fade parameters for a multi-fade
|
||||
* @param list_len Length of the fade_params_list, i.e. number of fade ranges for a multi-fade (1 - SOC_LEDC_GAMMA_CURVE_FADE_RANGE_MAX)
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_INVALID_ARG Parameter error
|
||||
* - ESP_ERR_INVALID_STATE Fade function not installed
|
||||
* - ESP_ERR_INVALID_STATE Channel not initialized
|
||||
* - ESP_FAIL Fade function init error
|
||||
*/
|
||||
esp_err_t ledc_set_multi_fade(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t start_duty, const ledc_fade_param_config_t *fade_params_list, uint32_t list_len);
|
||||
@ -631,10 +667,11 @@ esp_err_t ledc_set_multi_fade(ledc_mode_t speed_mode, ledc_channel_t channel, ui
|
||||
* @param fade_params_list Pointer to the array of fade parameters for a multi-fade
|
||||
* @param list_len Length of the fade_params_list, i.e. number of fade ranges for a multi-fade (1 - SOC_LEDC_GAMMA_CURVE_FADE_RANGE_MAX)
|
||||
* @param fade_mode Choose blocking or non-blocking mode
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_INVALID_ARG Parameter error
|
||||
* - ESP_ERR_INVALID_STATE Fade function not installed
|
||||
* - ESP_ERR_INVALID_STATE Channel not initialized
|
||||
* - ESP_FAIL Fade function init error
|
||||
*/
|
||||
esp_err_t ledc_set_multi_fade_and_start(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t start_duty, const ledc_fade_param_config_t *fade_params_list, uint32_t list_len, ledc_fade_mode_t fade_mode);
|
||||
@ -658,11 +695,11 @@ esp_err_t ledc_set_multi_fade_and_start(ledc_mode_t speed_mode, ledc_channel_t c
|
||||
* @param[in] fade_params_list_size The size of the fade_params_list user allocated (1 - SOC_LEDC_GAMMA_CURVE_FADE_RANGE_MAX)
|
||||
* @param[out] fade_params_list Pointer to the array of ledc_fade_param_config_t structure
|
||||
* @param[out] hw_fade_range_num Number of fade ranges for this multi-fade
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_INVALID_ARG Parameter error
|
||||
* - ESP_ERR_INVALID_STATE LEDC not initialized
|
||||
* - ESP_ERR_NO_MEM Out of memory
|
||||
* - ESP_ERR_INVALID_STATE Channel not initialized
|
||||
* - ESP_FAIL Required number of hardware ranges exceeds the size of the ledc_fade_param_config_t array user allocated
|
||||
*/
|
||||
esp_err_t ledc_fill_multi_fade_param_list(ledc_mode_t speed_mode, ledc_channel_t channel,
|
||||
@ -685,10 +722,11 @@ esp_err_t ledc_fill_multi_fade_param_list(ledc_mode_t speed_mode, ledc_channel_t
|
||||
* @param[out] cycle Pointer to accept fade cycle value
|
||||
* @param[out] scale Pointer to accept fade scale value
|
||||
* @param[out] step Pointer to accept fade step value
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_INVALID_ARG Parameter error
|
||||
* - ESP_ERR_INVALID_STATE LEDC not initialized
|
||||
* - ESP_ERR_INVALID_STATE Channel not initialized
|
||||
*/
|
||||
esp_err_t ledc_read_fade_param(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t range, uint32_t *dir, uint32_t *cycle, uint32_t *scale, uint32_t *step);
|
||||
#endif // SOC_LEDC_GAMMA_CURVE_FADE_SUPPORTED
|
||||
|
||||
@ -672,8 +672,13 @@ esp_err_t ledc_channel_config(const ledc_channel_config_t *ledc_conf)
|
||||
#endif
|
||||
|
||||
/*set channel parameters*/
|
||||
/* channel parameters decide how the waveform looks like in one period*/
|
||||
/* set channel duty and hpoint value, duty range is (0 ~ ((2 ** duty_resolution) - 1)), max hpoint value is 0xfffff*/
|
||||
/* channel parameters decide how the waveform looks like in one period */
|
||||
/* set channel duty and hpoint value, duty range is [0, (2**duty_res)], hpoint range is [0, (2**duty_res)-1] */
|
||||
/* Note: On ESP32, ESP32S2, ESP32S3, ESP32C3, ESP32C2, ESP32C6, ESP32H2, ESP32P4, due to a hardware bug,
|
||||
* 100% duty cycle (i.e. 2**duty_res) is not reachable when the binded timer selects the maximum duty
|
||||
* resolution. For example, the max duty resolution on ESP32C3 is 14-bit width, then set duty to (2**14)
|
||||
* will mess up the duty calculation in hardware.
|
||||
*/
|
||||
ledc_set_duty_with_hpoint(speed_mode, ledc_channel, duty, hpoint);
|
||||
/*update duty settings*/
|
||||
ledc_update_duty(speed_mode, ledc_channel);
|
||||
@ -859,7 +864,7 @@ static inline void IRAM_ATTR ledc_calc_fade_end_channel(uint32_t *fade_end_statu
|
||||
*channel = i;
|
||||
}
|
||||
|
||||
void IRAM_ATTR ledc_fade_isr(void *arg)
|
||||
static void IRAM_ATTR ledc_fade_isr(void *arg)
|
||||
{
|
||||
bool cb_yield = false;
|
||||
BaseType_t HPTaskAwoken = pdFALSE;
|
||||
@ -1070,8 +1075,9 @@ static esp_err_t _ledc_set_fade_with_step(ledc_mode_t speed_mode, ledc_channel_t
|
||||
ESP_LOGD(LEDC_TAG, "cur duty: %"PRIu32"; target: %"PRIu32", step: %d, cycle: %d; scale: %d; dir: %d",
|
||||
duty_cur, target_duty, step_num, cycle_num, scale, dir);
|
||||
} else {
|
||||
// Directly set duty to the target, does not care on the dir
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
ledc_duty_config(speed_mode, channel, LEDC_VAL_NO_CHANGE, target_duty, dir, 1, 1, 0);
|
||||
ledc_duty_config(speed_mode, channel, LEDC_VAL_NO_CHANGE, target_duty, 1, 1, 1, 0);
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
ESP_LOGD(LEDC_TAG, "Set to target duty: %"PRIu32, target_duty);
|
||||
}
|
||||
@ -1231,6 +1237,7 @@ esp_err_t ledc_fade_stop(ledc_mode_t speed_mode, ledc_channel_t channel)
|
||||
|
||||
esp_err_t ledc_fade_func_install(int intr_alloc_flags)
|
||||
{
|
||||
LEDC_CHECK(s_ledc_fade_isr_handle == NULL, "fade function already installed", ESP_ERR_INVALID_STATE);
|
||||
//OR intr_alloc_flags with ESP_INTR_FLAG_IRAM because the fade isr is in IRAM
|
||||
return ledc_isr_register(ledc_fade_isr, NULL, intr_alloc_flags | ESP_INTR_FLAG_IRAM, &s_ledc_fade_isr_handle);
|
||||
}
|
||||
|
||||
@ -246,7 +246,13 @@ To set the duty cycle, use the dedicated function :cpp:func:`ledc_set_duty`. Aft
|
||||
|
||||
Another way to set the duty cycle, as well as some other channel parameters, is by calling :cpp:func:`ledc_channel_config` covered in Section :ref:`ledc-api-configure-channel`.
|
||||
|
||||
The range of the duty cycle values passed to functions depends on selected ``duty_resolution`` and should be from ``0`` to ``(2 ** duty_resolution) - 1``. For example, if the selected duty resolution is 10, then the duty cycle values can range from 0 to 1023. This provides the resolution of ~ 0.1%.
|
||||
The range of the duty cycle values passed to functions depends on selected ``duty_resolution`` and should be from ``0`` to ``(2 ** duty_resolution)``. For example, if the selected duty resolution is 10, then the duty cycle values can range from 0 to 1024. This provides the resolution of ~ 0.1%.
|
||||
|
||||
.. only:: esp32 or esp32s2 or esp32s3 or esp32c3 or esp32c2 or esp32c6 or esp32h2 or esp32p4
|
||||
|
||||
.. warning::
|
||||
|
||||
On {IDF_TARGET_NAME}, when channel's binded timer selects its maximum duty resolution, the duty cycle value cannot be set to ``(2 ** duty_resolution)``. Otherwise, the internal duty counter in the hardware will overflow and be messed up.
|
||||
|
||||
|
||||
Change PWM Duty Cycle Using Hardware
|
||||
|
||||
@ -246,7 +246,13 @@ LED PWM 控制器可在无需 CPU 干预的情况下自动改变占空比，实
|
||||
|
||||
另外一种设置占空比和其他通道参数的方式是调用 :ref:`ledc-api-configure-channel` 一节提到的函数 :cpp:func:`ledc_channel_config`。
|
||||
|
||||
传递给函数的占空比数值范围取决于选定的 ``duty_resolution``，应为 ``0`` 至 ``(2 ** duty_resolution) - 1``。例如，如选定的占空比分辨率为 10，则占空比的数值范围为 0 至 1023。此时分辨率为 ~ 0.1%。
|
||||
传递给函数的占空比数值范围取决于选定的 ``duty_resolution``，应为 ``0`` 至 ``(2 ** duty_resolution)``。例如，如选定的占空比分辨率为 10，则占空比的数值范围为 0 至 1024。此时分辨率为 ~ 0.1%。
|
||||
|
||||
.. only:: esp32 or esp32s2 or esp32s3 or esp32c3 or esp32c2 or esp32c6 or esp32h2 or esp32p4
|
||||
|
||||
.. warning::
|
||||
|
||||
在 {IDF_TARGET_NAME} 上，当通道绑定的定时器配置了其最大 PWM 占空比分辨率（ ``MAX_DUTY_RES`` ），通道的占空比不能被设置到 ``(2 ** MAX_DUTY_RES)`` 。否则，硬件内部占空比计数器会溢出，并导致占空比计算错误。
|
||||
|
||||
|
||||
使用硬件改变 PWM 占空比
|
||||
|
||||
@ -27,7 +27,7 @@ The example uses fixed PWM frequency of 5 kHz, duty cycle in 50%, and output GPI
|
||||
|
||||
Depending on the selected `LEDC_FREQUENCY`, you will need to change the `LEDC_DUTY_RES`.
|
||||
|
||||
To dinamicaly set the duty and frequency, you can use the following functions:
|
||||
To dynamically set the duty and frequency, you can use the following functions:
|
||||
|
||||
To set the frequency to 2.5 kHZ i.e:
|
||||
|
||||
@ -35,10 +35,10 @@ To set the frequency to 2.5 kHZ i.e:
|
||||
ledc_set_freq(LEDC_MODE, LEDC_TIMER, 2500);
|
||||
```
|
||||
|
||||
Now the duty to 100% i.e:
|
||||
Now set the duty to 100% i.e:
|
||||
|
||||
```c
|
||||
ledc_set_duty(LEDC_MODE, LEDC_CHANNEL, 8191);
|
||||
ledc_set_duty(LEDC_MODE, LEDC_CHANNEL, 8192);
|
||||
ledc_update_duty(LEDC_MODE, LEDC_CHANNEL);
|
||||
```
|
||||
|
||||
@ -46,7 +46,7 @@ To change the duty cycle you need to calculate the duty range according to the d
|
||||
|
||||
If duty resolution is 13 bits:
|
||||
|
||||
Duty range: `0 to (2 ** 13) - 1 = 8191` where 0 is 0% and 8191 is 100%.
|
||||
Duty range: `0 to (2 ** 13) = 8191` where 0 is 0% and 8192 is 100%.
|
||||
|
||||
### Build and Flash
|
||||
|
||||
|
||||
@ -15,9 +15,15 @@
|
||||
#define LEDC_OUTPUT_IO (5) // Define the output GPIO
|
||||
#define LEDC_CHANNEL LEDC_CHANNEL_0
|
||||
#define LEDC_DUTY_RES LEDC_TIMER_13_BIT // Set duty resolution to 13 bits
|
||||
#define LEDC_DUTY (4095) // Set duty to 50%. ((2 ** 13) - 1) * 50% = 4095
|
||||
#define LEDC_DUTY (4096) // Set duty to 50%. (2 ** 13) * 50% = 4096
|
||||
#define LEDC_FREQUENCY (5000) // Frequency in Hertz. Set frequency at 5 kHz
|
||||
|
||||
/* Warning:
|
||||
* For ESP32, ESP32S2, ESP32S3, ESP32C3, ESP32C2, ESP32C6, ESP32H2, ESP32P4 targets,
|
||||
* when LEDC_DUTY_RES selects the maximum duty resolution (i.e. value equal to SOC_LEDC_TIMER_BIT_WIDTH),
|
||||
* 100% duty cycle is not reachable (duty cannot be set to (2 ** SOC_LEDC_TIMER_BIT_WIDTH)).
|
||||
*/
|
||||
|
||||
static void example_ledc_init(void)
|
||||
{
|
||||
// Prepare and then apply the LEDC PWM timer configuration
|
||||
|
||||
Loading…
Reference in New Issue
Block a user