基于STM32的RN8302B簡單測試例程

ID:532565 · 發表于 2019-7-25 21:59

部分代碼如/*       本測試例程（滿量程40A）針對1000：1電流互感器進行簡易校表，offset校正，并輸出ABC三相電流有效值。*/
/*       A5--->RN7302_SCK       */
/*       A6--->RN7302_SDO       */
/*       A7--->RN7302_SDI       */

#define       RN7302_CS PAout(4) //RN7302_CS  使能

u8 RN7302_Read(u16 wReg,u8 *pBuf)                                              //00計量參數寄存器，01配置和狀態寄存器
{
      u8 temp;
      RN7302_CS=0;
      SPI1_ReadWriteByte(wReg); //發送讀取寄存器地址
      temp = (((u8)(wReg >> 4)) & 0xf0)^0xff + 0x10;
      SPI1_ReadWriteByte(temp); //發送讀取寄存器地址
      delay_us(10);
      pBuf[0]=SPI1_ReadWriteByte(0xff);
      pBuf[1]=SPI1_ReadWriteByte(0xff);
      pBuf[2]=SPI1_ReadWriteByte(0xff);
      pBuf[3]=SPI1_ReadWriteByte(0xff);
      RN7302_CS=1;
return(1);
}

void RN7302_Write(u16 wReg,u8 *pBuf,u8 DatLen)                      //00計量參數寄存器，01配置和狀態寄存器
{
      u8 num,temp;
      u8 cs;

      RN7302_CS=0;//開啟片選
      temp = (u8)(wReg & 0x00ff);
      SPI1_ReadWriteByte(temp); //發送讀取寄存器地址
      temp = (((u8)(wReg >> 4)) & 0xf0) + 0x80;
      SPI1_ReadWriteByte(temp); //發送讀取寄存器地址
      cs=wReg+temp;
      delay_us(10);
      for(num=0;num<DatLen;num++)
      {
            SPI1_ReadWriteByte(pBuf[num]);
      cs+=pBuf[num];
      }
      cs=~cs;//0xFA
      SPI1_ReadWriteByte(cs);//發送cs
      RN7302_CS=1;//關閉片選
}

全部程序51hei下載地址：

RN7302測試例程-stm32.7z (189.49 KB, 下載次數: 273)