通过电磁寻找物品stm32f4xx的代码
时间: 2023-08-20 19:05:22 浏览: 71
以下是一个简单的基于STM32F4xx芯片的磁力计数据读取程序示例:
```
#include "stm32f4xx.h"
#include "stdio.h"
#define LSM303DLHC_READ_ADDR 0x3D
#define LSM303DLHC_WRITE_ADDR 0x3C
#define LSM303DLHC_WHO_AM_I 0x0F
#define LSM303DLHC_CTRL_REG1_A 0x20
#define LSM303DLHC_CTRL_REG4_A 0x23
#define LSM303DLHC_OUT_X_H_A 0x28
#define LSM303DLHC_OUT_X_L_A 0x29
I2C_HandleTypeDef hi2c1;
void I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
HAL_I2C_Init(&hi2c1);
}
void I2C1_ReadRegister(uint8_t devAddr, uint8_t regAddr, uint8_t* pBuffer, uint16_t size)
{
HAL_I2C_Mem_Read(&hi2c1, devAddr, regAddr, 1, pBuffer, size, 1000);
}
void I2C1_WriteRegister(uint8_t devAddr, uint8_t regAddr, uint8_t* pBuffer, uint16_t size)
{
HAL_I2C_Mem_Write(&hi2c1, devAddr, regAddr, 1, pBuffer, size, 1000);
}
int main(void)
{
uint8_t buffer[6];
int16_t x = 0;
uint8_t who_am_i = 0;
HAL_Init();
I2C1_Init();
I2C1_ReadRegister(LSM303DLHC_READ_ADDR, LSM303DLHC_WHO_AM_I, &who_am_i, 1);
if (who_am_i == 0x33)
{
printf("Found LSM303DLHC\r\n");
}
else
{
printf("Did not find LSM303DLHC\r\n");
while (1);
}
buffer[0] = 0x57;
I2C1_WriteRegister(LSM303DLHC_WRITE_ADDR, LSM303DLHC_CTRL_REG1_A, buffer, 1);
buffer[0] = 0x00;
I2C1_WriteRegister(LSM303DLHC_WRITE_ADDR, LSM303DLHC_CTRL_REG4_A, buffer, 1);
while (1)
{
I2C1_ReadRegister(LSM303DLHC_READ_ADDR, LSM303DLHC_OUT_X_H_A, buffer, 6);
x = (int16_t)((buffer[0] << 8) | buffer[1]);
printf("X: %d\r\n", x);
}
}
```
这个程序演示了如何通过STM32F4xx芯片和I2C总线读取LSM303DLHC磁力计模块的数据。你可以根据需要进行修改,例如修改I2C总线的初始化设置、修改磁力计模块的地址和寄存器等。