mirror of
https://github.com/sle118/squeezelite-esp32.git
synced 2025-12-07 12:07:09 +03:00
64fcc0edec
- Display is a separated entity - Make battery configuration consistent with others - Led config part of led.c - Jack config moved to monitor.c
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/*
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/timers.h"
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#include "esp_system.h"
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#include "esp_log.h"
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#include "driver/adc.h"
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#include "battery.h"
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#include "config.h"
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/*
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There is a bug in esp32 which causes a spurious interrupt on gpio 36/39 when
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using ADC, AMP and HALL sensor. Rather than making battery aware, we just ignore
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if as the interrupt lasts 80ns and should be debounced (and the ADC read does not
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happen very often)
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*/
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#define BATTERY_TIMER (10*1000)
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static const char *TAG = "battery";
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static struct {
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int channel;
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float sum, avg, scale;
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int count;
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TimerHandle_t timer;
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} battery;
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/****************************************************************************************
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*
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*/
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int battery_value_svc(void) {
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return battery.avg;
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}
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/****************************************************************************************
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*
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*/
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static void battery_callback(TimerHandle_t xTimer) {
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battery.sum += adc1_get_raw(battery.channel) * battery.scale / 4095.0;
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if (++battery.count == 30) {
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battery.avg = battery.sum / battery.count;
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battery.sum = battery.count = 0;
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ESP_LOGI(TAG, "Voltage %.2fV", battery.avg);
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}
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}
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/****************************************************************************************
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*
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*/
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void battery_svc_init(void) {
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battery.channel = CONFIG_BAT_CHANNEL;
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battery.scale = atof(CONFIG_BAT_SCALE);
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#ifndef BAT_LOCKED
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char *nvs_item = config_alloc_get_default(NVS_TYPE_STR, "bat_config", "n", 0);
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if (nvs_item) {
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char *p;
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if ((p = strcasestr(nvs_item, "channel")) != NULL) battery.channel = atoi(strchr(p, '=') + 1);
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if ((p = strcasestr(nvs_item, "scale")) != NULL) battery.scale = atof(strchr(p, '=') + 1);
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free(nvs_item);
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}
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#endif
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if (battery.channel != -1) {
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ESP_LOGI(TAG, "Battery measure channel: %u, scale %f", battery.channel, battery.scale);
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adc1_config_width(ADC_WIDTH_BIT_12);
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adc1_config_channel_atten(battery.channel, ADC_ATTEN_DB_0);
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battery.timer = xTimerCreate("battery", BATTERY_TIMER / portTICK_RATE_MS, pdTRUE, NULL, battery_callback);
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xTimerStart(battery.timer, portMAX_DELAY);
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} else {
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ESP_LOGI(TAG, "No battery");
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}
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}
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