From ec45e1a5937216bb40bd42f8ca4a789f23a9585a Mon Sep 17 00:00:00 2001 From: Wangjialin Date: Mon, 26 Sep 2016 09:56:03 +0800 Subject: [PATCH] components/driver: modify LEDC driver 1. modify ledc struct header: combine high speed and low speed channel 2. modify ledc init function 3. add timer control api 4. modify typo in ledc.h --- components/driver/include/driver/ledc.h | 195 ++++++++++++++------- components/driver/ledc.c | 179 +++++++++++-------- components/esp32/include/soc/ledc_struct.h | 195 +++++++-------------- 3 files changed, 311 insertions(+), 258 deletions(-) diff --git a/components/driver/include/driver/ledc.h b/components/driver/include/driver/ledc.h index e8c03fd81..2dffce8c9 100644 --- a/components/driver/include/driver/ledc.h +++ b/components/driver/include/driver/ledc.h @@ -43,15 +43,15 @@ typedef enum { LEDC_DUTY_DIR_INCREASE = 1, /*LEDC duty increase direction */ } ledc_duty_direction_t; typedef enum { - LEDC_REF_TICK = 0, // 1MhZ - LEDC_APB_CLK, //80Mhz -}ledc_timer_src_t; + LEDC_REF_TICK = 0, /*LEDC timer clock divided from reference tick(1Mhz) */ + LEDC_APB_CLK, /*LEDC timer clock divided from APB clock(80Mhz)*/ +} ledc_clk_src_t; typedef enum { - LEDC_TIMER0 = 0, /*LEDC source time TIME0 */ - LEDC_TIMER1, /*LEDC source time TIME1 */ - LEDC_TIMER2, /*LEDC source time TIME2 */ - LEDC_TIMER3, /*LEDC source time TIME3 */ -} ledc_timer_source_t; + LEDC_TIMER0 = 0, /*LEDC source timer TIMER0 */ + LEDC_TIMER1, /*LEDC source timer TIMER1 */ + LEDC_TIMER2, /*LEDC source timer TIMER2 */ + LEDC_TIMER3, /*LEDC source timer TIMER3 */ +} ledc_timer_t; typedef enum { LEDC_CHANNEL_0 = 0, /*LEDC channel 0 */ LEDC_CHANNEL_1, /*LEDC channel 1 */ @@ -63,56 +63,56 @@ typedef enum { LEDC_CHANNEL_7, /*LEDC channel 7 */ } ledc_channel_t; typedef enum { - LEDC_DUTY_DEPTH_10_BIT = 10, /*LEDC PWM depth 10Bit */ - LEDC_DUTY_DEPTH_11_BIT = 11, /*LEDC PWM depth 11Bit */ - LEDC_DUTY_DEPTH_12_BIT = 12, /*LEDC PWM depth 12Bit */ - LEDC_DUTY_DEPTH_13_BIT = 13, /*LEDC PWM depth 13Bit */ - LEDC_DUTY_DEPTH_14_BIT = 14, /*LEDC PWM depth 14Bit */ - LEDC_DUTY_DEPTH_15_BIT = 15, /*LEDC PWM depth 15Bit */ -} ledc_duty_depth_t; + LEDC_TIMER_10_BIT = 10, /*LEDC PWM depth 10Bit */ + LEDC_TIMER_11_BIT = 11, /*LEDC PWM depth 11Bit */ + LEDC_TIMER_12_BIT = 12, /*LEDC PWM depth 12Bit */ + LEDC_TIMER_13_BIT = 13, /*LEDC PWM depth 13Bit */ + LEDC_TIMER_14_BIT = 14, /*LEDC PWM depth 14Bit */ + LEDC_TIMER_15_BIT = 15, /*LEDC PWM depth 15Bit */ +} ledc_timer_bit_t; typedef struct ledc_channel_t_config { - int gpio_num; /*the LEDC output gpio_num, if you want to use gpio16, ledc_config_t.gpio_num = 16*/ - ledc_mode_t speed_mode; /*LEDC speed speed_mode*/ + int gpio_num; /*the LEDC output gpio_num, if you want to use gpio16, gpio_num = 16*/ + ledc_mode_t speed_mode; /*LEDC speed speed_mode, high-speed mode or low-speed mode*/ ledc_channel_t channel; /*LEDC channel(0 - 7)*/ - ledc_intr_type_t intr_type; /*configure interrupt , Fade interrupt enable or Fade interrupt disable*/ - ledc_timer_source_t timer_src; /*Select the timer source of channel (0 - 3)*/ + ledc_intr_type_t intr_type; /*configure interrupt, Fade interrupt enable or Fade interrupt disable*/ + ledc_timer_t timer_sel; /*Select the timer source of channel (0 - 3)*/ uint32_t freq_hz; /*LEDC channel frequency(Hz)*/ - uint32_t duty; /*LEDC channel duty,the duty range is [0,(2**duty_depth) - 1],*/ - ledc_duty_depth_t duty_depth; /*LEDC channel duty depth*/ + uint32_t duty; /*LEDC channel duty, the duty range is [0, (2**bit_num) - 1], */ + ledc_timer_bit_t bit_num; /*LEDC channel duty depth*/ } ledc_config_t; /** * @brief LEDC common configuration * - * User this Function,configure LEDC with the given channel/output gpio_num/interrupt/source timer/frequency(Hz)/LEDC depth + * User this Function, configure LEDC with the given channel/output gpio_num/interrupt/source timer/frequency(Hz)/LEDC depth * * @param[in] ledc_config_t * ledc_config_t.speed_mode : LEDC speed speed_mode * ledc_config_t.gpio_num : LEDC output gpio_num, if you want to use gpio16, ledc_config_t.gpio_num = 16 * ledc_config_t.channel : LEDC channel(0 - 7) - * ledc_config_t.intr_type : configure interrupt , Fade interrupt enable or Fade interrupt disable - * ledc_config_t.timer_src : Select the timer source of channel (0 - 3) - * When different channel ,select same timer ,their freq_hz and duty_depth must be the same + * ledc_config_t.intr_type : configure interrupt, Fade interrupt enable or Fade interrupt disable + * ledc_config_t.timer_sel : Select the timer source of channel (0 - 3) + * When different channel, select same timer, their freq_hz and bit_num must be the same * ledc_config_t.freq_hz : LEDC channel frequency(Hz), - * When different channel ,select same time ,their freq_hz and duty_depth must be same - * ledc_config_t.duty : LEDC channel duty,the duty range is [0,(2**duty_depth) - 1], - * ledc_config_t.duty_depth : LEDC channel duty depth - * When different channel ,select same time ,their freq_hz and duty_depth must be same + * When different channel, select same time, their freq_hz and bit_num must be same + * ledc_config_t.duty : LEDC channel duty, the duty range is [0, (2**bit_num) - 1], + * ledc_config_t.bit_num : LEDC channel duty depth + * When different channel, select same time, their freq_hz and bit_num must be same * @return ESP_OK: success * ESP_ERR_INVALID_ARG: parameter error - * ESP_FAIL: Can not find a proper pre-devider number base on the given frequency and the current duty_depth. + * ESP_FAIL: Can not find a proper pre-divider number base on the given frequency and the current bit_num. * */ esp_err_t ledc_config(ledc_config_t* ledc_conf); /** - * @brief LEDC start + * @brief LEDC update channel parameters * * Call this function to activate the LEDC updated parameters. - * After ledc_set_duty,ledc_set_fade, we need to call this function to update the settings. + * After ledc_set_duty, ledc_set_fade, we need to call this function to update the settings. * - * @param[in] speed_mode : select the LEDC speed_mode, high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version * * @param[in] channel : LEDC channel(0-7) * @@ -125,9 +125,9 @@ esp_err_t ledc_update(ledc_mode_t speed_mode, ledc_channel_t channel); /** * @brief LEDC stop * - * Disable LEDC output,and set idle level + * Disable LEDC output, and set idle level * - * @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version * * @param[in] channel : LEDC channel(0-7) * @@ -141,41 +141,41 @@ esp_err_t ledc_stop(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t idl * * Set LEDC frequency(Hz) * - * @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version * - * @param[in] channel : current channel(0-7) + * @param[in] timer_num : LEDC timer index(0-3) * * @param[in] freq_hz : set the LEDC frequency * * @return ESP_OK: success * ESP_ERR_INVALID_ARG: parameter error - * ESP_FAIL: Can not find a proper pre-devider number base on the given frequency and the current duty_depth. + * ESP_FAIL: Can not find a proper pre-divider number base on the given frequency and the current bit_num. */ -esp_err_t ledc_set_freq(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t freq_hz); +esp_err_t ledc_set_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num, uint32_t freq_hz); /** * @brief LEDC get channel frequency(Hz) * - * @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version * - * @param[in] channel : LEDC channel(0-7) + * @param[in] timer_num : LEDC timer index(0-3) * * @return 0 : error * others : current LEDC frequency * */ -uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_channel_t channel); +uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num); /** * @brief LEDC set duty * - * Set LEDC duty ,After the function calls the ledc_update function, the function can take effect. + * Set LEDC duty, After the function calls the ledc_update function, the function can take effect. * - * @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version * - * @param[in] channel : LEDC channel(0-7) + * @param[in] channel : LEDC channel(0-7) * - * @param[in] duty : set the LEDC duty ,the duty range is [0,(2**duty_depth) - 1] + * @param[in] duty : set the LEDC duty, the duty range is [0, (2**bit_num) - 1] * * @return ESP_OK: success * ESP_ERR_INVALID_ARG: parameter error @@ -185,7 +185,7 @@ esp_err_t ledc_set_duty(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t /** * @brief LEDC get duty * - * @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version * * @param[in] channel : LEDC channel(0-7) * @@ -199,13 +199,13 @@ int ledc_get_duty(ledc_mode_t speed_mode, ledc_channel_t channel); /** * @brief LEDC set gradient * - * Set LEDC gradient , After the function calls the ledc_update function , the function can take effect. + * Set LEDC gradient, After the function calls the ledc_update function, the function can take effect. * - * @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version * * @param[in] channel : LEDC channel(0-7) * - * @param[in] duty : set the start of the gradient duty , the duty range is [0,(2**duty_depth) - 1] + * @param[in] duty : set the start of the gradient duty, the duty range is [0, (2**bit_num) - 1] * * @param[in] gradule_direction : set the direction of the gradient * @@ -227,19 +227,92 @@ esp_err_t ledc_set_fade(ledc_mode_t speed_mode, uint32_t channel, uint32_t duty, * Users should know that which CPU is running and then pick a INUM that is not used by system. * We can find the information of INUM and interrupt level in soc.h. * TODO: to move INUM options to menu_config - * @parameter uint32_t ledc_intr_num : LEDC interrupt number,check the info in soc.h, and please see the core-isa.h for more details + * @parameter uint32_t ledc_intr_num : LEDC interrupt number, check the info in soc.h, and please see the core-isa.h for more details * @parameter void (* fn)(void* ) : interrupt handler function. * Note that the handler function MUST be defined with attribution of "IRAM_ATTR". * @parameter void * arg : parameter for handler function * * @return ESP_OK : success ; - * ESP_ERR_INVALID_ARG : fucntion ptr error. + * ESP_ERR_INVALID_ARG : function ptr error. */ esp_err_t ledc_isr_register(uint32_t ledc_intr_num, void (*fn)(void*), void * arg); +/** + * @brief configure LEDC settings + * + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version + * + * @param[in] timer_sel : timer index(0-3), there are 4 timers in LEDC module + * + * @param[in] div_num : timer clock divide number, the timer clock is divided from the selected clock source + * + * @param[in] bit_num : the count number of one period, counter range is 0 ~ ((2 ** bit_num) - 1) + * + * @param[in] clk_src : select LEDC source clock. + * + * @return -1: parameter error + * other value: current LEDC duty + * + */ +esp_err_t ledc_timer_config(ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t div_num, uint32_t bit_num, ledc_clk_src_t clk_src); +/** + * @brief reset LEDC timer + * + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version + * + * @param[in] timer_sel : LEDC timer index(0-3) + * + * + * @return ESP_ERR_INVALID_ARG: parameter error + * ESP_OK: success + * + */ +esp_err_t ledc_timer_rst(ledc_mode_t speed_mode, uint32_t timer_sel); +/** + * @brief pause LEDC timer counter + * + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version + * + * @param[in] timer_sel : LEDC timer index(0-3) + * + * + * @return ESP_ERR_INVALID_ARG: parameter error + * ESP_OK: success + * + */ +esp_err_t ledc_timer_pause(ledc_mode_t speed_mode, uint32_t timer_sel); +/** + * @brief pause LEDC timer resume + * + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version + * + * @param[in] timer_sel : LEDC timer index(0-3) + * + * + * @return ESP_ERR_INVALID_ARG: parameter error + * ESP_OK: success + * + */ +esp_err_t ledc_timer_resume(ledc_mode_t speed_mode, uint32_t timer_sel); + +/** + * @brief bind LEDC channel with the selected timer + * + * @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version + * + * @param[in] channel : LEDC channel index(0-7) + * + * @param[in] timer_idx : LEDC timer index(0-3) + * + * + * @return ESP_ERR_INVALID_ARG: parameter error + * ESP_OK: success + * + */ +esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, uint32_t channel, uint32_t timer_idx); /***************************EXAMPLE********************************** * @@ -247,20 +320,20 @@ esp_err_t ledc_isr_register(uint32_t ledc_intr_num, void (*fn)(void*), void * ar * ----------------EXAMPLE OF LEDC SETTING --------------------- * ledc_config_t ledc_conf = { * .channel = LEDC_CHANNEL_0; //set LEDC channel 0 - * .duty = 1000; //set the duty for initialization.(duty range is 0 ~ ((2**duty_depth)-1) - * .freq_hz = 1000; //set frequency , e.g.,1KHz + * .duty = 1000; //set the duty for initialization.(duty range is 0 ~ ((2**bit_num)-1) + * .freq_hz = 1000; //set frequency, e.g., 1KHz * .gpio_num = 16; //GPIO number - * .intr_type = LEDC_INTR_FADE_END; //GPIO INTR TYPE, as an example,we enable fade_end interrupt here. - * .duty_depth = LEDC_DUTY_DEPTH_12_BIT; //set duty_depth , (duty range is 0 ~ ((2**duty_depth)-1) + * .intr_type = LEDC_INTR_FADE_END; //GPIO INTR TYPE, as an example, we enable fade_end interrupt here. + * .bit_num = LEDC_TIMER_12_BIT; //set bit_num, (duty range is 0 ~ ((2**bit_num)-1) * .speed_mode = LEDC_HIGH_SPEED_MODE; //set LEDC mode, from ledc_mode_t - * .timer_src = LEDC_TIMER0; //set LEDC timer source, if different channel use one timer, the frequency and duty_depth of these channels should be the same + * .timer_sel = LEDC_TIMER0; //set LEDC timer source, if different channel use one timer, the frequency and bit_num of these channels should be the same * } * ledc_config(&ledc_conf); //setup the configuration * ----------------EXAMPLE OF SETTING DUTY --- ----------------- * uint32_t ledc_channel = LEDC_CHANNEL_0; //LEDC channel(0-73) - * uint32_t duty = 2000; //duty range is 0 ~ ((2**duty_depth)-1) - * LEDC_set_duty(LEDC_HIGH_SPEED_MODE,ledc_channel,duty); //set speed mode, channel, and duty. - * ledc_update(LEDC_HIGH_SPEED_MODE,ledc_channel); //after set duty, we need to call ledc_update to update the settings. + * uint32_t duty = 2000; //duty range is 0 ~ ((2**bit_num)-1) + * LEDC_set_duty(LEDC_HIGH_SPEED_MODE, ledc_channel, duty); //set speed mode, channel, and duty. + * ledc_update(LEDC_HIGH_SPEED_MODE, ledc_channel); //after set duty, we need to call ledc_update to update the settings. * * * ----------------EXAMPLE OF LEDC INTERRUPT ------------------ @@ -277,7 +350,7 @@ esp_err_t ledc_isr_register(uint32_t ledc_intr_num, void (*fn)(void*), void * ar * uint32_t intr_st = LEDC.int_st.val; //read LEDC interrupt status. * * //you will find which channels have triggered fade_end interrupt here, - * //then , you can post some event to RTOS queue to process the event. + * //then, you can post some event to RTOS queue to process the event. * //later we will add a queue in the driver code. * * LEDC.int_clr.val = intr_st; //clear LEDC interrupt status. diff --git a/components/driver/ledc.c b/components/driver/ledc.c index 68e87c988..a5bf92f6f 100644 --- a/components/driver/ledc.c +++ b/components/driver/ledc.c @@ -82,15 +82,30 @@ static int ledc_is_valid_mode(uint32_t mode) return 1; } -static esp_err_t ledc_timer_config(ledc_mode_t speed_mode, uint32_t timer_sel, uint32_t div_num, uint32_t timer_lim,ledc_timer_source_t clk) +static int ledc_is_valid_timer(int timer) +{ + if(timer > LEDC_TIMER3) { + LEDC_ERROR("LEDC TIMER ERR: %d\n", timer); + return 0; + } + return 1; +} + +esp_err_t ledc_timer_config(ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t div_num, uint32_t bit_num, ledc_clk_src_t clk_src) { if(!ledc_is_valid_mode(speed_mode)) { return ESP_ERR_INVALID_ARG; } + if(!ledc_is_valid_timer(timer_sel)) { + return ESP_ERR_INVALID_ARG; + } portENTER_CRITICAL(&ledc_spinlock); - LEDC.high_speed_timer[timer_sel].conf.div_num = div_num; - LEDC.high_speed_timer[timer_sel].conf.tick_sel = clk; - LEDC.high_speed_timer[timer_sel].conf.timer_lim = timer_lim; + LEDC.timer_group[speed_mode].timer[timer_sel].conf.div_num = div_num; + LEDC.timer_group[speed_mode].timer[timer_sel].conf.tick_sel = clk_src; + LEDC.timer_group[speed_mode].timer[timer_sel].conf.bit_num = bit_num; + if(speed_mode == LEDC_HIGH_SPEED_MODE) { + LEDC.timer_group[speed_mode].timer[timer_sel].conf.low_speed_update = 1; + } portEXIT_CRITICAL(&ledc_spinlock); return ESP_OK; } @@ -98,42 +113,74 @@ static esp_err_t ledc_timer_config(ledc_mode_t speed_mode, uint32_t timer_sel, u static esp_err_t ledc_duty_config(ledc_mode_t speed_mode, uint32_t channel_num, uint32_t hpoint_val, uint32_t duty_val, uint32_t duty_direction, uint32_t duty_num, uint32_t duty_cycle, uint32_t duty_scale) { - if(!ledc_is_valid_mode(speed_mode)) { - return ESP_ERR_INVALID_ARG; - } portENTER_CRITICAL(&ledc_spinlock); - LEDC.high_speed_channel[channel_num].hpoint.hpoint = hpoint_val; - LEDC.high_speed_channel[channel_num].duty.duty = duty_val; - LEDC.high_speed_channel[channel_num].conf1.duty_inc = duty_direction; - LEDC.high_speed_channel[channel_num].conf1.duty_num = duty_num; - LEDC.high_speed_channel[channel_num].conf1.duty_cycle = duty_cycle; - LEDC.high_speed_channel[channel_num].conf1.duty_scale = duty_scale; + LEDC.channel_group[speed_mode].channel[channel_num].hpoint.hpoint = hpoint_val; + LEDC.channel_group[speed_mode].channel[channel_num].duty.duty = duty_val; + LEDC.channel_group[speed_mode].channel[channel_num].conf1.val = ((duty_direction & LEDC_DUTY_INC_HSCH0_V) << LEDC_DUTY_INC_HSCH0_S) | + ((duty_num & LEDC_DUTY_NUM_HSCH0_V) << LEDC_DUTY_NUM_HSCH0_S) | + ((duty_cycle & LEDC_DUTY_CYCLE_HSCH0_V) << LEDC_DUTY_CYCLE_HSCH0_S) | + ((duty_scale & LEDC_DUTY_SCALE_HSCH0_V) << LEDC_DUTY_SCALE_HSCH0_S); portEXIT_CRITICAL(&ledc_spinlock); return ESP_OK; } -static esp_err_t ledc_set_channel_timer(ledc_mode_t speed_mode, uint32_t channel, uint32_t timer_idx) +esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, uint32_t channel, uint32_t timer_idx) { if(!ledc_is_valid_mode(speed_mode)) { return ESP_ERR_INVALID_ARG; } + if(!ledc_is_valid_timer(timer_idx)) { + return ESP_ERR_INVALID_ARG; + } portENTER_CRITICAL(&ledc_spinlock); - LEDC.high_speed_channel[channel].conf0.timer_sel = timer_idx; + LEDC.channel_group[speed_mode].channel[channel].conf0.timer_sel = timer_idx; portEXIT_CRITICAL(&ledc_spinlock); return ESP_OK; } -static esp_err_t ledc_timer_rst(ledc_mode_t speed_mode, uint32_t timer_sel) +esp_err_t ledc_timer_rst(ledc_mode_t speed_mode, uint32_t timer_sel) { if(!ledc_is_valid_mode(speed_mode)) { return ESP_ERR_INVALID_ARG; } + if(!ledc_is_valid_timer(timer_sel)) { + return ESP_ERR_INVALID_ARG; + } portENTER_CRITICAL(&ledc_spinlock); - LEDC.high_speed_timer[timer_sel].conf.rst = 1; - LEDC.high_speed_timer[timer_sel].conf.rst = 0; + LEDC.timer_group[speed_mode].timer[timer_sel].conf.rst = 1; + LEDC.timer_group[speed_mode].timer[timer_sel].conf.rst = 0; portEXIT_CRITICAL(&ledc_spinlock); return ESP_OK; } + +esp_err_t ledc_timer_pause(ledc_mode_t speed_mode, uint32_t timer_sel) +{ + if(!ledc_is_valid_mode(speed_mode)) { + return ESP_ERR_INVALID_ARG; + } + if(!ledc_is_valid_timer(timer_sel)) { + return ESP_ERR_INVALID_ARG; + } + portENTER_CRITICAL(&ledc_spinlock); + LEDC.timer_group[speed_mode].timer[timer_sel].conf.pause = 1; + portEXIT_CRITICAL(&ledc_spinlock); + return ESP_OK; +} + +esp_err_t ledc_timer_resume(ledc_mode_t speed_mode, uint32_t timer_sel) +{ + if(!ledc_is_valid_mode(speed_mode)) { + return ESP_ERR_INVALID_ARG; + } + if(!ledc_is_valid_timer(timer_sel)) { + return ESP_ERR_INVALID_ARG; + } + portENTER_CRITICAL(&ledc_spinlock); + LEDC.timer_group[speed_mode].timer[timer_sel].conf.pause = 0; + portEXIT_CRITICAL(&ledc_spinlock); + return ESP_OK; +} + static esp_err_t ledc_enable_intr_type(ledc_mode_t speed_mode, uint32_t channel, ledc_intr_type_t type) { if(!ledc_is_valid_mode(speed_mode)) { @@ -143,10 +190,10 @@ static esp_err_t ledc_enable_intr_type(ledc_mode_t speed_mode, uint32_t channel, uint32_t intr_type = type; portENTER_CRITICAL(&ledc_spinlock); value = LEDC.int_ena.val; - if(intr_type & LEDC_INTR_FADE_END) { - LEDC.int_ena.val = value | BIT(8 + channel); + if(intr_type == LEDC_INTR_FADE_END) { + LEDC.int_ena.val = value | BIT(LEDC_DUTY_CHNG_END_HSCH0_INT_ENA_S + channel); } else { - LEDC.int_ena.val = (value & (~(BIT(8 + channel)))); + LEDC.int_ena.val = (value & (~(BIT(LEDC_DUTY_CHNG_END_HSCH0_INT_ENA_S + channel)))); } portEXIT_CRITICAL(&ledc_spinlock); return ESP_OK; @@ -175,13 +222,14 @@ esp_err_t ledc_config(ledc_config_t* ledc_conf) uint32_t gpio_num = ledc_conf->gpio_num; uint32_t ledc_channel = ledc_conf->channel; uint32_t freq_hz = ledc_conf->freq_hz; - uint32_t timer_select = ledc_conf->timer_src; - uint32_t duty_depth = ledc_conf->duty_depth; + uint32_t timer_select = ledc_conf->timer_sel; + uint32_t bit_num = ledc_conf->bit_num; uint32_t intr_type = ledc_conf->intr_type; uint32_t duty = ledc_conf->duty; uint32_t div_param = 0; uint32_t precision = 0; int timer_clk_src = 0; + if(!ledc_is_valid_channel(ledc_channel)) { return ESP_ERR_INVALID_ARG; } @@ -192,8 +240,8 @@ esp_err_t ledc_config(ledc_config_t* ledc_conf) LEDC_ERROR("GPIO number error: IO%d\n ", gpio_num); return ESP_ERR_INVALID_ARG; } - if(freq_hz == 0 || duty_depth == 0 || duty_depth > LEDC_DUTY_DEPTH_15_BIT) { - LEDC_ERROR("freq_hz=%u duty_depth=%u\n", div_param, duty_depth); + if(freq_hz == 0 || bit_num == 0 || bit_num > LEDC_TIMER_15_BIT) { + LEDC_ERROR("freq_hz=%u bit_num=%u\n", div_param, bit_num); return ESP_ERR_INVALID_ARG; } if(timer_select > LEDC_TIMER3) { @@ -202,15 +250,9 @@ esp_err_t ledc_config(ledc_config_t* ledc_conf) } portENTER_CRITICAL(&ledc_spinlock); esp_err_t ret = ESP_OK; - /*gpio matrix ledc pwm signal*/ - PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[gpio_num], PIN_FUNC_GPIO); - gpio_set_direction(gpio_num, GPIO_MODE_OUTPUT); - gpio_matrix_out(gpio_num, LEDC_HS_SIG_OUT0_IDX + ledc_channel, 0, 0); - /*configure ledc param*/ - /*calculate the div_param and select which base clock and first we will select the apb_clk */ - precision = (0x1 << duty_depth); //2**depth + precision = (0x1 << bit_num); //2**depth div_param = ((uint64_t) LEDC_APB_CLK_HZ << 8) / freq_hz / precision; //8bit fragment - /*Fail ,because the div num overflow or too small*/ + /*Fail ,because the div_num overflow or too small*/ if(div_param <= 256 || div_param > LEDC_DIV_NUM_HSTIMER0_V) { //REF TICK /*Selet the reference tick*/ div_param = ((uint64_t) LEDC_REF_CLK_HZ << 8) / freq_hz / precision; @@ -219,20 +261,31 @@ esp_err_t ledc_config(ledc_config_t* ledc_conf) ret = ESP_FAIL; } timer_clk_src = LEDC_REF_TICK; - ledc_timer_config(speed_mode, timer_select, div_param, duty_depth, timer_clk_src); - ledc_set_channel_timer(speed_mode, ledc_channel, timer_select); } else { //APB TICK timer_clk_src = LEDC_APB_CLK; - ledc_timer_config(speed_mode, timer_select, div_param, duty_depth, timer_clk_src); - ledc_set_channel_timer(speed_mode, ledc_channel, timer_select); } + //1. set timer parameters + // timer settings decide the clk of counter and the period of PWM + ledc_timer_config(speed_mode, timer_select, div_param, bit_num, timer_clk_src); + // reset timer. ledc_timer_rst(speed_mode, timer_select); + //2. set channel parameters + // channel parameters decide how the waveform looks like in one period + // set channel duty, duty range is (0 ~ ((2 ** bit_num) - 1)) ledc_set_duty(speed_mode, ledc_channel, duty); + //update duty settings + ledc_update(speed_mode, ledc_channel); + //3. bind the channel with the timer + ledc_bind_channel_timer(speed_mode, ledc_channel, timer_select); + //4. set interrupt type ledc_enable_intr_type(speed_mode, ledc_channel, intr_type); LEDC_INFO("LEDC_PWM CHANNEL %1u|GPIO %02u|FreHz %05u|Duty %04u|Depth %04u|Time %01u|SourceClk %01u|Divparam %u\n", - ledc_channel, gpio_num, freq_hz, duty, duty_depth, timer_select, timer_clk_src, div_param + ledc_channel, gpio_num, freq_hz, duty, bit_num, timer_select, timer_clk_src, div_param ); - ledc_update(speed_mode, ledc_channel); + /*5. set LEDC signal in gpio matrix*/ + PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[gpio_num], PIN_FUNC_GPIO); + gpio_set_direction(gpio_num, GPIO_MODE_OUTPUT); + gpio_matrix_out(gpio_num, LEDC_HS_SIG_OUT0_IDX + ledc_channel, 0, 0); portEXIT_CRITICAL(&ledc_spinlock); return ret; } @@ -246,8 +299,8 @@ esp_err_t ledc_update(ledc_mode_t speed_mode, ledc_channel_t channel) return ESP_ERR_INVALID_ARG; } portENTER_CRITICAL(&ledc_spinlock); - LEDC.high_speed_channel[channel].conf0.sig_out_en = 1; - LEDC.high_speed_channel[channel].conf1.duty_start = 1; + LEDC.channel_group[speed_mode].channel[channel].conf0.sig_out_en = 1; + LEDC.channel_group[speed_mode].channel[channel].conf1.duty_start = 1; portEXIT_CRITICAL(&ledc_spinlock); return ESP_OK; } @@ -261,9 +314,9 @@ esp_err_t ledc_stop(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t idl return ESP_ERR_INVALID_ARG; } portENTER_CRITICAL(&ledc_spinlock); - LEDC.high_speed_channel[channel].conf0.idle_lv = idle_level; - LEDC.high_speed_channel[channel].conf0.sig_out_en = 0; - LEDC.high_speed_channel[channel].conf1.duty_start = 0; + LEDC.channel_group[speed_mode].channel[channel].conf0.idle_lv = idle_level & 0x1; + LEDC.channel_group[speed_mode].channel[channel].conf0.sig_out_en = 0; + LEDC.channel_group[speed_mode].channel[channel].conf1.duty_start = 0; portEXIT_CRITICAL(&ledc_spinlock); return ESP_OK; } @@ -284,7 +337,6 @@ esp_err_t ledc_set_fade(ledc_mode_t speed_mode, uint32_t channel, uint32_t duty, LEDC_ERROR("step_num=%u duty_cyle_num=%u duty_scale=%u\n", step_num, duty_cyle_num, duty_scale); return ESP_ERR_INVALID_ARG; } - portENTER_CRITICAL(&ledc_spinlock); ledc_duty_config(speed_mode, channel, //uint32_t chan_num, 0, //uint32_t hpoint_val, @@ -294,7 +346,6 @@ esp_err_t ledc_set_fade(ledc_mode_t speed_mode, uint32_t channel, uint32_t duty, duty_cyle_num, //uint32_t duty_cycle, duty_scale //uint32_t duty_scale ); - portEXIT_CRITICAL(&ledc_spinlock); return ESP_OK; } @@ -306,7 +357,6 @@ esp_err_t ledc_set_duty(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t if(!ledc_is_valid_channel(channel)) { return ESP_ERR_INVALID_ARG; } - portENTER_CRITICAL(&ledc_spinlock); ledc_duty_config(speed_mode, channel, //uint32_t chan_num, 0, //uint32_t hpoint_val, @@ -316,7 +366,6 @@ esp_err_t ledc_set_duty(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t 1, //uint32_t duty_cycle, 0 //uint32_t duty_scale ); - portEXIT_CRITICAL(&ledc_spinlock); return ESP_OK; } @@ -325,56 +374,46 @@ int ledc_get_duty(ledc_mode_t speed_mode, ledc_channel_t channel) if(!ledc_is_valid_mode(speed_mode)) { return -1; } - uint32_t duty = (LEDC.high_speed_channel[channel].duty_rd.duty_read >> 4); + uint32_t duty = (LEDC.channel_group[speed_mode].channel[channel].duty_rd.duty_read >> 4); return duty; } -esp_err_t ledc_set_freq(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t freq_hz) +esp_err_t ledc_set_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num, uint32_t freq_hz) { if(!ledc_is_valid_mode(speed_mode)) { return ESP_ERR_INVALID_ARG; } - if(!ledc_is_valid_channel(channel)) { - return ESP_ERR_INVALID_ARG; - } portENTER_CRITICAL(&ledc_spinlock); esp_err_t ret = ESP_OK; uint32_t div_num = 0; - /*Select timer*/ - uint32_t timer_select = LEDC.high_speed_channel[channel].conf0.timer_sel; - /*Get timer limit*/ - uint32_t duty_depth = LEDC.high_speed_timer[timer_select].conf.timer_lim; - uint32_t timer_source_clk = LEDC.high_speed_timer[timer_select].conf.tick_sel; - uint32_t precision = (0x1 << duty_depth); + uint32_t bit_num = LEDC.timer_group[speed_mode].timer[timer_num].conf.bit_num; + uint32_t timer_source_clk = LEDC.timer_group[speed_mode].timer[timer_num].conf.tick_sel; + uint32_t precision = (0x1 << bit_num); if(timer_source_clk == LEDC_APB_CLK) { div_num = ((uint64_t) LEDC_APB_CLK_HZ << 8) / freq_hz / precision; } else { div_num = ((uint64_t) LEDC_REF_CLK_HZ << 8) / freq_hz / precision; } if(div_num <= 256 || div_num > LEDC_DIV_NUM_HSTIMER0) { - LEDC_ERROR("channel %u,div param err,div_param=%u\n", channel, div_num); + LEDC_ERROR("div param err,div_param=%u\n", div_num); ret = ESP_FAIL; } - LEDC.high_speed_timer[timer_select].conf.div_num = div_num; + LEDC.timer_group[speed_mode].timer[timer_num].conf.div_num = div_num; portEXIT_CRITICAL(&ledc_spinlock); return ret; } -uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_channel_t channel) +uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num) { if(!ledc_is_valid_mode(speed_mode)) { return 0; } - if(!ledc_is_valid_channel(channel)) { - return 0; - } portENTER_CRITICAL(&ledc_spinlock); uint32_t freq = 0; - uint32_t timer_select = LEDC.high_speed_channel[channel].conf0.timer_sel; - uint32_t timer_source_clk = LEDC.high_speed_timer[timer_select].conf.tick_sel; - uint32_t duty_depth = LEDC.high_speed_timer[timer_select].conf.timer_lim; - uint32_t div_num = LEDC.high_speed_timer[timer_select].conf.div_num; - uint32_t precision = (0x1 << duty_depth); + uint32_t timer_source_clk = LEDC.timer_group[speed_mode].timer[timer_num].conf.tick_sel; + uint32_t bit_num = LEDC.timer_group[speed_mode].timer[timer_num].conf.bit_num; + uint32_t div_num = LEDC.timer_group[speed_mode].timer[timer_num].conf.div_num; + uint32_t precision = (0x1 << bit_num); if(timer_source_clk == LEDC_APB_CLK) { freq = ((uint64_t) LEDC_APB_CLK_HZ << 8) / precision / div_num; } else { diff --git a/components/esp32/include/soc/ledc_struct.h b/components/esp32/include/soc/ledc_struct.h index d44720a14..d119289ac 100644 --- a/components/esp32/include/soc/ledc_struct.h +++ b/components/esp32/include/soc/ledc_struct.h @@ -14,133 +14,74 @@ #ifndef _SOC_LEDC_STRUCT_H_ #define _SOC_LEDC_STRUCT_H_ typedef volatile struct { - struct{ - union { - struct { - uint32_t timer_sel: 2; /*There are four high speed timers the two bits are used to select one of them for high speed channel. 2'b00: seletc hstimer0. 2'b01: select hstimer1. 2'b10: select hstimer2. 2'b11: select hstimer3.*/ - uint32_t sig_out_en: 1; /*This is the output enable control bit for high speed channel*/ - uint32_t idle_lv: 1; /*This bit is used to control the output value when high speed channel is off.*/ - uint32_t reserved4: 27; - uint32_t clk_en: 1; /*This bit is clock gating control signal. when software configure LED_PWM internal registers it controls the register clock.*/ - }; - uint32_t val; - } conf0; - union { - struct { - uint32_t hpoint: 20; /*The output value changes to high when htimerx(x=[0 3]) selected by high speed channel has reached reg_hpoint_hsch0[19:0]*/ - uint32_t reserved20: 12; - }; - uint32_t val; - } hpoint; - union { - struct { - uint32_t duty: 25; /*The register is used to control output duty. When hstimerx(x=[0 3]) chosen by high speed channel has reached reg_lpoint_hsch0 the output signal changes to low. reg_lpoint_hsch0=(reg_hpoint_hsch0[19:0]+reg_duty_hsch0[24:4]) (1) reg_lpoint_hsch0=(reg_hpoint_hsch0[19:0]+reg_duty_hsch0[24:4] +1) (2) The least four bits in this register represent the decimal part and determines when to choose (1) or (2)*/ - uint32_t reserved25: 7; - }; - uint32_t val; - } duty; - union { - struct { - uint32_t duty_scale:10; /*This register controls the increase or decrease step scale for high speed channel.*/ - uint32_t duty_cycle:10; /*This register is used to increase or decrease the duty every reg_duty_cycle_hsch0 cycles for high speed channel.*/ - uint32_t duty_num: 10; /*This register is used to control the number of increased or decreased times for high speed channel.*/ - uint32_t duty_inc: 1; /*This register is used to increase the duty of output signal or decrease the duty of output signal for high speed channel.*/ - uint32_t duty_start: 1; /*When reg_duty_num_hsch0 reg_duty_cycle_hsch0 and reg_duty_scale_hsch0 has been configured. these register won't take effect until set reg_duty_start_hsch0. this bit is automatically cleared by hardware.*/ - }; - uint32_t val; - } conf1; - union { - struct { - uint32_t duty_read: 25; /*This register represents the current duty of the output signal for high speed channel.*/ - uint32_t reserved25: 7; - }; - uint32_t val; - } duty_rd; - } high_speed_channel[8]; - struct{ - union { - struct { - uint32_t timer_sel: 2; /*There are four low speed timers the two bits are used to select one of them for low speed channel. 2'b00: seletc lstimer0. 2'b01: select lstimer1. 2'b10: select lstimer2. 2'b11: select lstimer3.*/ - uint32_t sig_out_en: 1; /*This is the output enable control bit for low speed channel.*/ - uint32_t idle_lv: 1; /*This bit is used to control the output value when low speed channel is off.*/ - uint32_t para_up: 1; /*This bit is used to update register LEDC_LSCH0_HPOINT and LEDC_LSCH0_DUTY for low speed channel.*/ - uint32_t reserved5: 27; - }; - uint32_t val; - } conf0; - union { - struct { - uint32_t hpoint: 20; /*The output value changes to high when lstimerx(x=[0 3]) selected by low speed channel has reached reg_hpoint_lsch0[19:0]*/ - uint32_t reserved20: 12; - }; - uint32_t val; - } hpoint; - union { - struct { - uint32_t duty: 25; /*The register is used to control output duty. When lstimerx(x=[0 3]) choosed by low speed channel has reached reg_lpoint_lsch0 the output signal changes to low. reg_lpoint_lsch0=(reg_hpoint_lsch0[19:0]+reg_duty_lsch0[24:4]) (1) reg_lpoint_lsch0=(reg_hpoint_lsch0[19:0]+reg_duty_lsch0[24:4] +1) (2) The least four bits in this register represent the decimal part and determines when to choose (1) or (2)*/ - uint32_t reserved25: 7; - }; - uint32_t val; - } duty; - union { - struct { - uint32_t duty_scale:10; /*This register controls the increase or decrease step scale for low speed channel.*/ - uint32_t duty_cycle:10; /*This register is used to increase or decrease the duty every reg_duty_cycle_lsch0 cycles for low speed channel.*/ - uint32_t duty_num: 10; /*This register is used to control the num of increased or decreased times for low speed channel6.*/ - uint32_t duty_inc: 1; /*This register is used to increase the duty of output signal or decrease the duty of output signal for low speed channel6.*/ - uint32_t duty_start: 1; /*When reg_duty_num_hsch1 reg_duty_cycle_hsch1 and reg_duty_scale_hsch1 has been configured. these register won't take effect until set reg_duty_start_hsch1. this bit is automatically cleared by hardware.*/ - }; - uint32_t val; - } conf1; - union { - struct { - uint32_t duty_read: 25; /*This register represents the current duty of the output signal for low speed channel.*/ - uint32_t reserved25: 7; - }; - uint32_t val; - } duty_r; - } low_speed_channel[8]; - struct{ - union { - struct { - uint32_t timer_lim: 5; /*This register controls the range of the counter in high speed timer. the counter range is [0 2**reg_hstimer0_lim] the max bit width for counter is 20.*/ - uint32_t div_num: 18; /*This register is used to configure parameter for divider in high speed timer the least significant eight bits represent the decimal part.*/ - uint32_t pause: 1; /*This bit is used to pause the counter in high speed timer*/ - uint32_t rst: 1; /*This bit is used to reset high speed timer the counter will be 0 after reset.*/ - uint32_t tick_sel: 1; /*This bit is used to choose apb_clk or ref_tick for high speed timer. 1'b1:apb_clk 0:ref_tick*/ - uint32_t reserved26: 6; - }; - uint32_t val; - } conf; - union { - struct { - uint32_t timer_cnt: 20; /*software can read this register to get the current counter value in high speed timer*/ - uint32_t reserved20: 12; - }; - uint32_t val; - } value; - } high_speed_timer[4]; - struct{ - union { - struct { - uint32_t timer_lim: 5; /*This register controls the range of the counter in low speed timer. the counter range is [0 2**reg_lstimer0_lim] the max bit width for counter is 20.*/ - uint32_t div_num: 18; /*This register is used to configure parameter for divider in low speed timer the least significant eight bits represent the decimal part.*/ - uint32_t pause: 1; /*This bit is used to pause the counter in low speed timer.*/ - uint32_t rst: 1; /*This bit is used to reset low speed timer the counter will be 0 after reset.*/ - uint32_t tick_sel: 1; /*This bit is used to choose slow_clk or ref_tick for low speed timer. 1'b1:slow_clk 0:ref_tick*/ - uint32_t param_update: 1; /*Set this bit to update reg_div_num_lstime0 and reg_lstimer0_lim.*/ - uint32_t reserved27: 5; - }; - uint32_t val; - } conf; - union { - struct { - uint32_t timer_cnt: 20; /*software can read this register to get the current counter value in low speed timer.*/ - uint32_t reserved20: 12; - }; - uint32_t val; - } value; - } low_speed_timer[4]; + struct { + struct { + union { + struct { + uint32_t timer_sel: 2; /*There are four high speed timers the two bits are used to select one of them for high speed channel. 2'b00: seletc hstimer0. 2'b01: select hstimer1. 2'b10: select hstimer2. 2'b11: select hstimer3.*/ + uint32_t sig_out_en: 1; /*This is the output enable control bit for high speed channel*/ + uint32_t idle_lv: 1; /*This bit is used to control the output value when high speed channel is off.*/ + uint32_t reserved4: 27; + uint32_t clk_en: 1; /*This bit is clock gating control signal. when software configure LED_PWM internal registers it controls the register clock.*/ + }; + uint32_t val; + } conf0; + union { + struct { + uint32_t hpoint: 20; /*The output value changes to high when htimerx(x=[0 3]) selected by high speed channel has reached reg_hpoint_hsch0[19:0]*/ + uint32_t reserved20: 12; + }; + uint32_t val; + } hpoint; + union { + struct { + uint32_t duty: 25; /*The register is used to control output duty. When hstimerx(x=[0 3]) chosen by high speed channel has reached reg_lpoint_hsch0 the output signal changes to low. reg_lpoint_hsch0=(reg_hpoint_hsch0[19:0]+reg_duty_hsch0[24:4]) (1) reg_lpoint_hsch0=(reg_hpoint_hsch0[19:0]+reg_duty_hsch0[24:4] +1) (2) The least four bits in this register represent the decimal part and determines when to choose (1) or (2)*/ + uint32_t reserved25: 7; + }; + uint32_t val; + } duty; + union { + struct { + uint32_t duty_scale:10; /*This register controls the increase or decrease step scale for high speed channel.*/ + uint32_t duty_cycle:10; /*This register is used to increase or decrease the duty every reg_duty_cycle_hsch0 cycles for high speed channel.*/ + uint32_t duty_num: 10; /*This register is used to control the number of increased or decreased times for high speed channel.*/ + uint32_t duty_inc: 1; /*This register is used to increase the duty of output signal or decrease the duty of output signal for high speed channel.*/ + uint32_t duty_start: 1; /*When reg_duty_num_hsch0 reg_duty_cycle_hsch0 and reg_duty_scale_hsch0 has been configured. these register won't take effect until set reg_duty_start_hsch0. this bit is automatically cleared by hardware.*/ + }; + uint32_t val; + } conf1; + union { + struct { + uint32_t duty_read: 25; /*This register represents the current duty of the output signal for high speed channel.*/ + uint32_t reserved25: 7; + }; + uint32_t val; + } duty_rd; + } channel[8]; + } channel_group[2]; /*two channel groups : 0: high-speed channels; 1: low-speed channels*/ + struct { + struct { + union { + struct { + uint32_t bit_num: 5; /*This register controls the range of the counter in high speed timer. the counter range is [0 2**reg_hstimer0_lim] the max bit width for counter is 20.*/ + uint32_t div_num: 18; /*This register is used to configure parameter for divider in high speed timer the least significant eight bits represent the decimal part.*/ + uint32_t pause: 1; /*This bit is used to pause the counter in high speed timer*/ + uint32_t rst: 1; /*This bit is used to reset high speed timer the counter will be 0 after reset.*/ + uint32_t tick_sel: 1; /*This bit is used to choose apb_clk or ref_tick for high speed timer. 1'b1:apb_clk 0:ref_tick*/ + uint32_t low_speed_update: 1; /*This bit is only useful for low speed timer channels, reserved for high speed timers*/ + uint32_t reserved26: 5; + }; + uint32_t val; + } conf; + union { + struct { + uint32_t timer_cnt: 20; /*software can read this register to get the current counter value in high speed timer*/ + uint32_t reserved20: 12; + }; + uint32_t val; + } value; + } timer[4]; + } timer_group[2]; /*two channel groups : 0: high-speed channels; 1: low-speed channels*/ union { struct { uint32_t hstimer0_ovf: 1; /*The interrupt raw bit for high speed channel0 counter overflow.*/