stm32电池电量百分比
时间: 2023-11-26 22:46:47 浏览: 122
以下是两种计算 STM32 电池电量百分比的方法:
1. 通过电压和电量曲线计算电量百分比
```python
# 假设电池电压为 voltage,满电电压为 full_voltage,电量曲线为 capacity_curve
# 计算电量百分比
percentage = (capacity_curve[0] - capacity_curve[-1]) / (full_voltage * len(capacity_curve)) * (voltage - full_voltage) + capacity_curve[-1]
```
2. 通过累积电量积分法计算电量百分比
```python
# 假设当前电池电量为 current_capacity,额定电量为 rated_capacity,电量曲线为 capacity_curve
# 计算电量百分比
percentage = current_capacity / rated_capacity * 100
# 更新电量曲线
capacity_curve.append(current_capacity)
```
相关问题
STM32电池电量ADC检测代码
以下是一个示例STM32电池电量ADC检测代码,适用于基于HAL库的STM32微控制器:
```
#include "stm32f4xx.h"
#include "stm32f4xx_hal.h"
ADC_HandleTypeDef hadc1;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_ADC1_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_ADC1_Init();
while (1)
{
//启动ADC转换
HAL_ADC_Start(&hadc1);
//等待转换完成
HAL_ADC_PollForConversion(&hadc1, 100);
//读取ADC值
uint16_t adc_value = HAL_ADC_GetValue(&hadc1);
//将ADC值转换为电压
float voltage = (3.3 * adc_value) / 4096;
//将电压转换为电池电量百分比
int battery_level = (int)((voltage - 3.0) / 0.1 * 100);
//在串口输出电池电量百分比
printf("Battery level: %d%%\n", battery_level);
//等待一段时间再进行下一次转换
HAL_Delay(1000);
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 16;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
RCC_OscInitStruct.PLL.PLLQ = 7;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
| RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
{
Error_Handler();
}
}
static void MX_ADC1_Init(void)
{
ADC_ChannelConfTypeDef sConfig = {0};
//使能ADC时钟
__HAL_RCC_ADC1_CLK_ENABLE();
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
hadc1.Init.Resolution = ADC_RESOLUTION
stm32检测电池电量
在STM32上检测电池电量需要使用ADC模块进行模拟量采集,然后将采集到的电压值转换为电池电量。具体步骤如下:
1. 确定ADC采样通道和采样时钟频率;
2. 初始化ADC模块,并设置ADC采样通道;
3. 启动ADC采样,并等待采样完成;
4. 读取ADC采样值,并将其转换为电压值;
5. 根据电压值和电池的伏安特性曲线,计算出电池电量百分比。
需要注意的是,在测量电池电量时需要考虑电池的放电曲线、温度、内阻等因素对电压值的影响,以及ADC的精度和误差。同时还需要根据具体应用场景和需求选择合适的算法和计算方法。