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Add software LiPo UV protection with energy-save boot.

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Detect under-voltage on GPIO1/11, persist UV state in NVS, enter a minimal
power mode without ESP-NOW, and recover after charge; expose LED mode 6
battery-low for host testing via goTool.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
skruecken
2026-06-23 18:22:52 +02:00
co-authored by Cursor
parent be18b758ed
commit f006f8b912
26 changed files with 418 additions and 37 deletions
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main/led_ring.c
+32
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@@ -5,6 +5,7 @@
#include "esp_log.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "led_strip.h"
#include <stdint.h>
@@ -23,8 +24,12 @@ static led_strip_handle_t led_ring;
#define LED_RING_FIND_ME_ON_MS 300
#define LED_RING_FIND_ME_OFF_MS 150
#define LED_RING_FIND_ME_BLINKS_PER_COLOR 3
#define LED_RING_BATTERY_LOW_R 255
#define LED_RING_BATTERY_LOW_G 0
#define LED_RING_BATTERY_LOW_B 0
static QueueHandle_t led_queue;
static SemaphoreHandle_t s_battery_low_done;
// Led Matrix Maps
const uint8_t d0[] = {46, 47, 60, 61, 62, 75, 78, 79,
@@ -145,6 +150,22 @@ void vTaskLedRing(void *pvParameters) {
}
}
continue;
} else if (cmd.mode == LED_CMD_BATTERY_LOW) {
uint8_t r = LED_RING_BATTERY_LOW_R;
uint8_t g = LED_RING_BATTERY_LOW_G;
uint8_t b = LED_RING_BATTERY_LOW_B;
led_ring_scale_rgb(&r, &g, &b, LED_RING_BATTERY_LOW_INTENSITY);
for (uint32_t i = 0; i < LED_RING_BATTERY_LOW_LEDS; i++) {
led_strip_set_pixel(led_ring, i, r, g, b);
}
led_strip_refresh(led_ring);
vTaskDelay(pdMS_TO_TICKS(LED_RING_BATTERY_LOW_HOLD_MS));
led_strip_clear(led_ring);
led_strip_refresh(led_ring);
if (s_battery_low_done != NULL) {
xSemaphoreGive(s_battery_low_done);
}
continue;
}
led_strip_refresh(led_ring);
}
@@ -153,6 +174,7 @@ void vTaskLedRing(void *pvParameters) {
void led_ring_init(void) {
led_queue = xQueueCreate(10, sizeof(led_command_t));
s_battery_low_done = xSemaphoreCreateBinary();
xTaskCreate(vTaskLedRing, "led_task", 4096, NULL, 5, NULL);
}
@@ -224,3 +246,13 @@ void led_ring_find_me(void) {
led_command_t cmd = {.mode = LED_CMD_FIND_ME};
led_ring_send_command(&cmd);
}
void led_ring_show_battery_low(void) {
if (led_queue == NULL || s_battery_low_done == NULL) {
return;
}
(void)xSemaphoreTake(s_battery_low_done, 0);
led_command_t cmd = {.mode = LED_CMD_BATTERY_LOW};
led_ring_send_command(&cmd);
(void)xSemaphoreTake(s_battery_low_done, portMAX_DELAY);
}