我要源代码
时间: 2023-08-03 11:04:06 浏览: 55
以下是使用STM32和霍尔传感器测量电流的示例代码(仅供参考):
```c
#include "stm32f4xx.h"
#define ADC_RESOLUTION 4095 // 12-bit ADC
#define V_REF 3.3 // Reference voltage of ADC
#define R_SHUNT 0.1 // Resistance of shunt in ohms
void init_ADC(void)
{
RCC->APB2ENR |= RCC_APB2ENR_ADC1EN; // Enable ADC1 clock
ADC1->CR1 &= ~ADC_CR1_RES; // 12-bit resolution
ADC1->CR2 &= ~ADC_CR2_ALIGN; // Right alignment
ADC1->CR2 |= ADC_CR2_ADON; // Enable ADC1
}
uint32_t read_ADC(void)
{
ADC1->CR2 |= ADC_CR2_SWSTART; // Start ADC conversion
while(!(ADC1->SR & ADC_SR_EOC)); // Wait for conversion to complete
return ADC1->DR;
}
float calc_current(uint32_t adc_value)
{
float voltage = adc_value * V_REF / ADC_RESOLUTION;
float current = voltage / R_SHUNT;
return current;
}
int main(void)
{
uint32_t adc_value;
float current;
init_ADC();
while(1)
{
adc_value = read_ADC();
current = calc_current(adc_value);
// Do something with current value
}
}
```
这个示例代码假设已经正确连接了霍尔传感器和STM32的ADC输入管脚。请注意,此代码仅供参考。实际应用中可能需要进行适当的修改以适应硬件和应用程序需求。