Thierry Perrautandawalol
e969aa6e2d
The low-battery indicator is critical info — keep blinking even when the user has the LED disabled (Speaker mute toggle). Steady-state LED still respects the flag: when battery recovers or charging starts, the LED returns to off if the flag is set, otherwise to the existing connected = solid-on state. (cherry picked from commit 775346cd29d9a3c566309ec7d29db80f0b6979f1)
74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
//
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// Low-battery LED indicator. See battery_led.h.
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//
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#include "battery_led.h"
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#include <cstdint>
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#include "config.h"
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#include "pico/cyw43_arch.h"
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#include "pico/time.h"
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extern uint8_t interrupt_in_data[63];
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namespace {
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constexpr uint64_t REPORT_STALE_US = 2'000'000; // assume disconnected if no report for 2 s
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constexpr uint64_t BLINK_PERIOD_US = 500'000; // 1 Hz, 50% duty
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constexpr uint8_t THRESHOLD_LEVEL = 1; // PowerPercent <= 1 (i.e. <= 10%)
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constexpr uint8_t POWER_STATE_DISCHARGING = 0x0;
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uint64_t last_report_us = 0;
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uint64_t last_toggle_us = 0;
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bool blinking = false;
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bool led_state = false;
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} // namespace
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void battery_led_init(void) {
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last_report_us = 0;
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last_toggle_us = 0;
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blinking = false;
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led_state = false;
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}
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void battery_led_note_report(void) {
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last_report_us = time_us_64();
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}
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void battery_led_tick(void) {
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const uint64_t now = time_us_64();
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if (last_report_us == 0 || (now - last_report_us) >= REPORT_STALE_US) {
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// No fresh data — bt.cpp owns the LED while disconnected.
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blinking = false;
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return;
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}
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const uint8_t b = interrupt_in_data[52];
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const uint8_t pct = b & 0x0F;
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const uint8_t st = (b >> 4) & 0x0F;
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const bool low = (st == POWER_STATE_DISCHARGING) && (pct <= THRESHOLD_LEVEL);
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if (low) {
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// Critical warning: override disable_pico_led so the user always sees it.
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if (!blinking) {
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blinking = true;
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led_state = true;
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last_toggle_us = now;
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cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, true);
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return;
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}
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if ((now - last_toggle_us) >= BLINK_PERIOD_US) {
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led_state = !led_state;
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last_toggle_us = now;
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cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, led_state);
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}
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} else if (blinking) {
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blinking = false;
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// Battery recovered or now charging — restore steady-state LED per the user
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// preference flag (LED off when disabled, otherwise the bt.cpp connected = on state).
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cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, !get_config().disable_pico_led);
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}
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}
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