STM32 软件I2C方式读取AS5600磁编码器获取角度例程
- 🔖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
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🌿原理图部分：
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🌿PCB布线和电路
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✨注意事项：有些硬件需要I2C上拉，否则检测不到设备。软件I2C方式没有上拉的情况下，需要将IO口配置为推挽输出模式才行，没有上拉情况下，开漏模式可能访问不到。
📙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2delay_init(); //延时函数初始化uart_init(9600); //串口初始化为9600LED_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
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🌿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 monitorSerial.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");elseSerial.println("done\n");delay(5000); // wait 5 seconds for next scan
}
