83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
#include "adc.h"
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#include "hlw8032.h"
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#include "main.h"
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#include "network.h"
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#include "led.h"
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#include "reset_log.h"
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#include <string.h>
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#include <stdio.h>
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ADC_HandleTypeDef hadc1;
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void adcInit(void)
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{
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ADC_ChannelConfTypeDef sConfig = {0};
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hadc1.Instance = ADC1;
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hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
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hadc1.Init.ContinuousConvMode = DISABLE;
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hadc1.Init.DiscontinuousConvMode = DISABLE;
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hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
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hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
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hadc1.Init.NbrOfConversion = 1;
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if (HAL_ADC_Init(&hadc1) != HAL_OK) Error_Handler();
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sConfig.Channel = ADC_CHANNEL_0;
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sConfig.Rank = ADC_REGULAR_RANK_1;
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sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
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if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) Error_Handler();
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}
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uint16_t getAdc(void)
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{
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uint16_t adc_value = 0;
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HAL_ADC_Start(&hadc1);
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if (HAL_ADC_PollForConversion(&hadc1, 10) == HAL_OK) {
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adc_value = HAL_ADC_GetValue(&hadc1);
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}
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HAL_ADC_Stop(&hadc1);
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return adc_value;
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}
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void update_batter(void)
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{
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static _Bool powoff = 0;
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uint16_t adc_value = getAdc();
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float batter_valtage = adc_value * (3.3 / 4096.0);
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batter_valtage = batter_valtage * 11.0;
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batter_valtage += 0.6;
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batter_valtage = 100 * (batter_valtage - 10.8) / (12.6 - 10.8);
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/* 限幅 0~100%：法拉电容放电时 3.3V 基准下跌，ADC 读数失真可能算出负数 */
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if (batter_valtage < 0) batter_valtage = 0;
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if (batter_valtage > 100) batter_valtage = 100;
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/* 电量 <10% 基本等同外部 12V 断开。法拉电容(5.5F)续航有限，
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* 首次低于阈值立即 50ms 快速复核 2 次（约 100ms 出结果），仍低马上按断电处理：
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* 优先把掉电消息发出去，再做本地记录，最后留 500ms 让模组把报文真正发完 */
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if (batter_valtage < 10 && powoff == 0) {
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uint8_t confirm = 1;
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for (int k = 0; k < 2; k++) {
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HAL_Delay(50);
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adc_value = getAdc();
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float v = adc_value * (3.3 / 4096.0);
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v = v * 11.0 + 0.6;
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v = 100 * (v - 10.8) / (12.6 - 10.8);
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if (v >= 10) { confirm = 0; break; }
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}
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if (!confirm) return;
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/* 分毫必争：先发掉电消息，后打日志（串口打印也要十几 ms）。
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* 发送通道被占用（如 GPS 轮询）时丢弃返回 -1：不锁存，下个 50ms 周期重试，
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* 直到发出或电容耗尽 */
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if (NET_publish_power(0) != 0) return;
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powoff = 1;
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log_info("> 电量低: %d%%", (int)batter_valtage);
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hlw8032_save(); /* 本地记录：电量、断电原因（都很快） */
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reset_log_power_loss();
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HAL_Delay(500); /* 给模组把 MQTT 报文发出去的时间 */
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NVIC_SystemReset();
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/* BootLoader 会检测主电源，12V 未恢复前不跳 APP，防止外设没上电时程序乱跑 */
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}
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/* LED1: 低电量时常亮 */
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if (powoff) LED1_ON; else LED1_OFF;
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}
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