Juli
e82f0ac137
A knob turn still wakes the chip (the RTC can't tell gestures apart), but the firmware now stays dark and checks the button: held while turning it boots at once; otherwise the ring glows for 2.5 s waiting for a click and goes back to deep sleep if none comes. Screen and Wi-Fi never start for an accidental nudge.
90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
#include "power.h"
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#include "board.h"
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#include "display.h"
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#include "leds.h"
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#include "ui.h"
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#include "driver/gpio.h"
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#include "driver/rtc_io.h"
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#include "esp_log.h"
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#include "esp_sleep.h"
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#include "esp_timer.h"
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#include "esp_wifi.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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static const char *TAG = "power";
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// Arm ext1 wake on the encoder pins. The S3 has one level mode for all selected
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// pins, so pick it from the knob's resting state: pins that are high wake on
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// low; if both rest low, wake on high. A single detent toggles both pins.
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static void arm_knob_wakeup(void)
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{
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int pins[2] = {board->enc_a, board->enc_b};
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uint64_t high = 0, low = 0;
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for (int i = 0; i < 2; i++) {
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rtc_gpio_init(pins[i]);
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rtc_gpio_set_direction(pins[i], RTC_GPIO_MODE_INPUT_ONLY);
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rtc_gpio_pulldown_dis(pins[i]);
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rtc_gpio_pullup_en(pins[i]);
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}
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vTaskDelay(pdMS_TO_TICKS(5));
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for (int i = 0; i < 2; i++) {
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if (rtc_gpio_get_level(pins[i])) high |= 1ULL << pins[i];
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else low |= 1ULL << pins[i];
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}
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esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON); // keeps the RTC pull-ups alive
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if (high) esp_sleep_enable_ext1_wakeup_io(high, ESP_EXT1_WAKEUP_ANY_LOW);
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else esp_sleep_enable_ext1_wakeup_io(low, ESP_EXT1_WAKEUP_ANY_HIGH);
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ESP_LOGI(TAG, "wake on knob: A%d=%d B%d=%d", board->enc_a, !!(high & (1ULL << board->enc_a)),
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board->enc_b, !!(high & (1ULL << board->enc_b)));
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}
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void power_off(void)
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{
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ESP_LOGI(TAG, "powering off");
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ui_status("Off", "turn the knob to wake");
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vTaskDelay(pdMS_TO_TICKS(700));
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leds_set_mode(LED_OFF, 0);
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vTaskDelay(pdMS_TO_TICKS(80)); // let the ring task push the dark frame
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display_off();
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esp_wifi_stop();
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gpio_set_level(board->pwr_en, 0); // peripheral rail off (screen, ring, codec)
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arm_knob_wakeup();
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esp_deep_sleep_start();
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}
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#define CONFIRM_WINDOW_MS 2500
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void power_confirm_wake(void)
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{
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if (esp_sleep_get_wakeup_cause() != ESP_SLEEP_WAKEUP_EXT1) return;
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gpio_config_t btn = {.pin_bit_mask = 1ULL << board->enc_btn, .mode = GPIO_MODE_INPUT, .pull_up_en = 1};
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gpio_config(&btn);
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if (!gpio_get_level(board->enc_btn)) {
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ESP_LOGI(TAG, "wake confirmed: button held while turning");
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return;
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}
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leds_set_mode(LED_BREATHE, 0x302838); // soft hint: "click to wake"
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int64_t deadline = esp_timer_get_time() / 1000 + CONFIRM_WINDOW_MS;
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while (esp_timer_get_time() / 1000 < deadline) {
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if (!gpio_get_level(board->enc_btn)) {
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ESP_LOGI(TAG, "wake confirmed: click");
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return;
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}
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vTaskDelay(pdMS_TO_TICKS(20));
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}
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ESP_LOGI(TAG, "knob nudge without the button; back to sleep");
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leds_set_mode(LED_OFF, 0);
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vTaskDelay(pdMS_TO_TICKS(80));
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gpio_set_level(board->pwr_en, 0);
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arm_knob_wakeup();
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esp_deep_sleep_start();
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}
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void power_report_wakeup(void)
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{
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esp_sleep_wakeup_cause_t cause = esp_sleep_get_wakeup_cause();
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if (cause == ESP_SLEEP_WAKEUP_EXT1) ESP_LOGI(TAG, "woken by the knob");
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else if (cause != ESP_SLEEP_WAKEUP_UNDEFINED) ESP_LOGI(TAG, "wakeup cause %d", cause);
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}
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