添加ads111x驱动,侦测各电源总线状态
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@@ -132,6 +132,10 @@ void pasre_DAT(const char *api, const char *json_str)
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cJSON_AddItemToObject(dat,"SYSHUM",cJSON_CreateNumber(sys_humidity));
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cJSON_AddItemToObject(dat,"SYSTIME",cJSON_CreateString(systime));
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cJSON_AddItemToObject(dat,"NAME",cJSON_CreateString(machine_name));
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cJSON_AddItemToObject(dat,"PBAT",cJSON_CreateNumber(pow_bat));
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cJSON_AddItemToObject(dat,"PCODE",cJSON_CreateNumber(pow_code));
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cJSON_AddItemToObject(dat,"PDEV1",cJSON_CreateNumber(pow_dev1));
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cJSON_AddItemToObject(dat,"PDEV2",cJSON_CreateNumber(pow_dev2));
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cJSON_AddItemToObject(dat,"VAR",cJSON_CreateString(sys_var));
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}
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else if (strcmp(api, "SC810") == 0)
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@@ -8,7 +8,10 @@ rt_int32_t sys_humidity;//主机环境湿度
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char sys_var[8];//主机版本0.0.00A
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unsigned char sys_time[6];//系统时间
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unsigned int sys_run_time;//运行时间
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int pow_bat;//电池电压
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int pow_code;//主电压
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int pow_dev1;//设备电压.通讯
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int pow_dev2;//设备电压,其它
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// 动态数据缓冲区（初始化为 NULL，后续分配）
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char *DATA_dat;
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@@ -9,6 +9,10 @@ extern rt_int32_t sys_humidity;//主机环境湿度
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extern char sys_var[8];//主机版本0.0.00A
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extern unsigned char sys_time[6];//系统时间
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extern unsigned int sys_run_time;//运行时间
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extern int pow_bat;//电池电压
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extern int pow_code;//主电压
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extern int pow_dev1;//设备电压.通讯
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extern int pow_dev2;//设备电压,其它
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// ===== 字符串变量 =====
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extern char *DATA_dat;
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@@ -0,0 +1,226 @@
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/*
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* Copyright (c) 2025, Your Name
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2025-12-27 Developer First version for ADS1115 on RT-Thread
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <board.h>
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#include "Variable.h"
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#define DBG_TAG "sensor.ads1115"
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#define DBG_LVL DBG_LOG
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#include <rtdbg.h>
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/* ADS1115 I2C 地址（A0 引脚接地时为 0x48） */
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#define ADS1115_I2C_ADDR 0x48
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/* 使用的 I2C 总线设备名 */
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#define ADS1115_I2C_BUS_NAME "i2c2" // 根据你的板子修改，如 "i2c1"
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/* ADS1115 寄存器地址 */
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#define ADS1115_REG_CONVERT 0x00
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#define ADS1115_REG_CONFIG 0x01
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static struct rt_i2c_bus_device *i2c_bus = RT_NULL;
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/**
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* 向 ADS1115 写入配置寄存器
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*/
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static rt_err_t ads1115_write_config(rt_uint16_t config)
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{
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rt_uint8_t buf[3] = {
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ADS1115_REG_CONFIG,
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(rt_uint8_t)(config >> 8),
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(rt_uint8_t)(config & 0xFF)
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};
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struct rt_i2c_msg msgs[1] = {
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{
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.addr = ADS1115_I2C_ADDR,
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.flags = RT_I2C_WR,
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.buf = buf,
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.len = 3,
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}
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};
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if (rt_i2c_transfer(i2c_bus, msgs, 1) != 1)
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{
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LOG_E("Failed to write config register.");
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return -RT_ERROR;
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}
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return RT_EOK;
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}
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/**
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* 从 ADS1115 读取转换结果
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*/
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static rt_err_t ads1115_read_conversion(rt_int16_t *value)
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{
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rt_uint8_t buf[2] = {0};
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struct rt_i2c_msg msgs[2] = {
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{
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.addr = ADS1115_I2C_ADDR,
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.flags = RT_I2C_WR,
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.buf = (rt_uint8_t[]){ADS1115_REG_CONVERT},
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.len = 1,
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},
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{
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.addr = ADS1115_I2C_ADDR,
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.flags = RT_I2C_RD,
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.buf = buf,
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.len = 2,
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}
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};
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if (rt_i2c_transfer(i2c_bus, msgs, 2) != 2)
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{
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LOG_E("Failed to read conversion register.");
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return -RT_ERROR;
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}
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*value = (rt_int16_t)((buf[0] << 8) | buf[1]);
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return RT_EOK;
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}
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/**
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* 读取指定通道的 ADC 值（单端输入）
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* channel: 0 ~ 3 (对应 AIN0~AIN3 对 GND)
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* 返回：RT_EOK 或错误码
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*/
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static rt_err_t ads1115_read_channel(rt_uint8_t channel, rt_int16_t *raw_value)
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{
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if (channel > 3)
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{
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LOG_E("Invalid channel: %d", channel);
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return -RT_EINVAL;
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}
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// 配置：OS=1, MUX=100+ch (单端), PGA=001 (±4.096V), MODE=1 (single), DR=100 (128SPS)
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rt_uint16_t config = 0x8000 | // OS = 1
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((0x04 | channel) << 12) | // MUX: AINx vs GND
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(0x01 << 9) | // PGA = ±4.096V
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(0x01 << 8) | // MODE = single-shot
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(0x04 << 5); // DR = 128 SPS
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if (ads1115_write_config(config) != RT_EOK)
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{
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return -RT_ERROR;
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}
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rt_thread_mdelay(10); // 等待转换完成（128SPS ≈ 8ms）
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return ads1115_read_conversion(raw_value);
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}
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/**
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* 将原始 ADC 值转换为毫伏（mV）
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* 假设使用 ±2.048V 量程（PGA=1），则 LSB = 2.048V / 32768 ≈ 0.0625 mV/LSB
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* 但因为是单端且参考地，实际范围 0~2.048V → 满量程 2.048V = 32768 LSB
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* 所以：Voltage(mV) = raw * (2048 / 32768) = raw * 0.0625
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*/
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static rt_int32_t ads1115_raw_to_mv(rt_int16_t raw)
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{
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/* 注意：单端模式下，raw 应为正数（0 ~ 32767）*/
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return (rt_int32_t)(((rt_int64_t)raw * 125) / 1000); // 等价于 raw * 0.0625 * 1000
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}
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/**
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* ADS1115 读取线程（示例：读取 AIN0）
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*/
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static void ads1115_thread_entry(void *parameter)
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{
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rt_int16_t raw = 0 ,mt = 3600;
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while (1)
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{
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if(mt>3600)
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{
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if (ads1115_read_channel(0, &raw) == RT_EOK)
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{
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pow_bat = ads1115_raw_to_mv(raw);
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}
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else
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{
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LOG_E("Failed to read ADS1115 P_BAT");
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}
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}
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else
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{
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mt = 0;
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}
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if (ads1115_read_channel(1, &raw) == RT_EOK)
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{
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pow_code = ads1115_raw_to_mv(raw);
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}
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else
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{
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LOG_E("Failed to read ADS1115 P_CODE");
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}
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if (ads1115_read_channel(2, &raw) == RT_EOK)
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{
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pow_dev1 = ads1115_raw_to_mv(raw);
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}
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else
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{
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LOG_E("Failed to read ADS1115 P_DEV1");
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}
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if (ads1115_read_channel(3, &raw) == RT_EOK)
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{
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pow_dev2 = ads1115_raw_to_mv(raw);
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}
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else
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{
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LOG_E("Failed to read ADS1115 P_DEV2");
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}
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rt_thread_mdelay(1000); // 每 秒读取一次
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}
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}
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/**
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* ADS1115 驱动初始化函数
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*/
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static int rt_hw_ads1115_init(void)
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{
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i2c_bus = rt_i2c_bus_device_find(ADS1115_I2C_BUS_NAME);
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if (i2c_bus == RT_NULL)
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{
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LOG_E("Failed to find I2C bus: %s", ADS1115_I2C_BUS_NAME);
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return -RT_ENOSYS;
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}
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LOG_I("Found I2C bus: %s", ADS1115_I2C_BUS_NAME);
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/* 创建读取线程 */
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rt_thread_t tid = rt_thread_create("ads1115",
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ads1115_thread_entry,
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RT_NULL,
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512,
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RT_THREAD_PRIORITY_MAX - 2,
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10);
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if (tid != RT_NULL)
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{
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rt_thread_startup(tid);
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}
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else
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{
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LOG_E("Failed to create ADS1115 thread.");
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return -RT_ERROR;
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}
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return RT_EOK;
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}
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/* 自动初始化 */
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INIT_APP_EXPORT(rt_hw_ads1115_init);
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