/* * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #include #include "soc/soc_pins.h" #include "hal/touch_sensor_ll.h" #include "hal/touch_sensor_hal.h" #include "hal/touch_sensor_types.h" #include "soc/soc_caps.h" typedef struct { int deep_slp_chan; touch_hal_config_t slp_cfg; bool apply_slp_cfg; } touch_hal_deep_sleep_obj_t; static touch_hal_deep_sleep_obj_t s_touch_slp_obj = { .deep_slp_chan = -1, .apply_slp_cfg = false, }; void touch_hal_config_controller(const touch_hal_config_t *cfg) { HAL_ASSERT(cfg); touch_ll_set_out_mode(cfg->output_mode); touch_ll_set_power_on_wait_cycle(cfg->power_on_wait_ticks); touch_ll_set_measure_interval_ticks(cfg->meas_interval_ticks); if (cfg->timeout_ticks) { touch_ll_timeout_enable(cfg->timeout_ticks); } else { touch_ll_timeout_disable(); } touch_ll_sample_cfg_set_engaged_num(cfg->sample_cfg_num); for (int i = 0; i < cfg->sample_cfg_num; i++) { touch_ll_set_clock_div(i, cfg->sample_cfg[i].div_num); touch_ll_set_charge_times(i, cfg->sample_cfg[i].charge_times); touch_ll_sample_cfg_set_rc_filter(i, cfg->sample_cfg[i].rc_filter_cap, cfg->sample_cfg[i].rc_filter_res); touch_ll_sample_cfg_set_driver(i, cfg->sample_cfg[i].low_drv, cfg->sample_cfg[i].high_drv); touch_ll_sample_cfg_bypass_shield_output(i, cfg->sample_cfg[i].bypass_shield_output); touch_ll_sample_cfg_set_bias_voltage(i, cfg->sample_cfg[i].bias_volt); } } void touch_hal_save_sleep_config(int deep_slp_chan, const touch_hal_config_t *deep_slp_cfg) { s_touch_slp_obj.deep_slp_chan = deep_slp_chan; /* If particular deep sleep configuration is given, save it and apply it before entering the deep sleep */ if (deep_slp_chan >= 0 && deep_slp_cfg) { s_touch_slp_obj.apply_slp_cfg = true; memcpy(&s_touch_slp_obj.slp_cfg, deep_slp_cfg, sizeof(touch_hal_config_t)); } else { s_touch_slp_obj.apply_slp_cfg = false; } } //This function will only be called when the chip is going to deep sleep. static void s_touch_hal_apply_sleep_config(void) { /* Apply the particular configuration for deep sleep */ if (s_touch_slp_obj.apply_slp_cfg) { touch_hal_config_controller(&s_touch_slp_obj.slp_cfg); } /* Whether to enable touch sensor wake-up the chip from deep sleep */ if (s_touch_slp_obj.deep_slp_chan >= 0) { touch_ll_sleep_set_channel_num(s_touch_slp_obj.deep_slp_chan); touch_ll_set_channel_mask(BIT(s_touch_slp_obj.deep_slp_chan)); } else { touch_ll_sleep_set_channel_num(TOUCH_LL_NULL_CHANNEL); } } void touch_hal_prepare_deep_sleep(void) { s_touch_hal_apply_sleep_config(); // TODO: check if it is necessary to reset the sleep benchmark touch_ll_sleep_reset_benchmark(); touch_ll_intr_clear(TOUCH_LL_INTR_MASK_ALL); }