STM32 软件I2C方式读取AS5600磁编码器获取角度例程

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• 🔖本例程使用正点原子例程作为工程模板创建。

📘 硬件电路部分

• 🌿原理图部分：
  

• 🌿PCB布线和电路
  

📙驱动代码部分

int main(void)
{

    u16 i = 0;
    u16 raw_num = 0;
    u16 JIAODUnum = 0;
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);// 设置中断优先级分组2
    delay_init(); //延时函数初始化
    uart_init(9600);	//串口初始化为9600
    LED_Init();	//初始化与LED连接的硬件接口
    IIC_Init();
    while(1) {


        delay_ms(10);
        if(++i > 100) {
            raw_num = AS5600_ReadTwoByte(_raw_ang_hi, _raw_ang_lo); //读取两个寄存器的值
            JIAODUnum = (raw_num * 360) / 4096; //对寄存器值进行处理得到角度值
            printf("AS5600 Angle:%d \r\n", JIAODUnum);
            LED0 = !LED0; //提示系统正在运行
            i = 0;
        }

    }
}

• 🌿读取效果：
  

📚测试代码

• 🔖基于stm32f103标准库实现.

链接：https://pan.baidu.com/s/1jmWxyHLhXFY_c5sJyndkmg?pwd=hk0h 
提取码：hk0h

📒i2c地址扫描

• 🌿基于HAL STM32F1硬件I2C扫描从设备地址：https://blog.csdn.net/weixin_42880082/article/details/131869827

• 🌿基于Arduino rp2040 I2C扫描程序代码

#include <Wire.h>
 
 
void setup()
{
 // Wire.begin();
 
  Serial.begin(115200);
  while (!Serial);             // Leonardo: wait for serial monitor
  Serial.println("\nI2C Scanner");
    Wire.setSDA(8);
  Wire.setSCL(9);
  Wire.begin();
}
 
 
void loop()
{
  byte error, address;
  int nDevices;
 
  Serial.println("Scanning...");
 
  nDevices = 0;
  for(address = 1; address < 127; address++ ) 
  {
    // The i2c_scanner uses the return value of
    // the Write.endTransmisstion to see if
    // a device did acknowledge to the address.
    Wire.beginTransmission(address);//从指定的地址开始向I2C从设备进行传输
    error = Wire.endTransmission();//停止与从机的数据传输
 /*
 * error返回结果：
 * 0: 成功
1: 数据量超过传送缓存容纳限制
2: 传送地址时收到 NACK
3: 传送数据时收到 NACK
4: 其它错误
 */
    if (error == 0)
    {
      Serial.print("I2C device found at address 0x");
      if (address<16) 
        Serial.print("0");
      Serial.print(address,HEX);
      Serial.println("  !");
 
      nDevices++;
    }
    else if (error==4) 
    {
      Serial.print("Unknown error at address 0x");
      if (address<16) 
        Serial.print("0");
      Serial.println(address,HEX);
    }    
  }
  if (nDevices == 0)
    Serial.println("No I2C devices found\n");
  else
    Serial.println("done\n");
 
  delay(5000);           // wait 5 seconds for next scan
}