C51 COMPILER V9.01   TWIIO                                                                 02/06/2025 15:28:46 PAGE 1   


C51 COMPILER V9.01, COMPILATION OF MODULE TWIIO
OBJECT MODULE PLACED IN .\output\TwiIO.obj
COMPILER INVOKED BY: D:\Tool\Keil\C51\BIN\C51.EXE code_drv\TwiIO.c LARGE OPTIMIZE(7,SIZE) REGFILE(.\output\MCUCore_Load.
                    -ORC) BROWSE INTVECTOR(0X1000) INCDIR(.\header_app;.\header_drv;.\code_gasguage;.\code_classb\iec60730_lib\include;.\code
                    -_classb\iec60730_proc\Include;.\code_classb\config) DEBUG OBJECTEXTEND PRINT(.\output\TwiIO.lst) OBJECT(.\output\TwiIO.o
                    -bj)

line level    source

   1          /********************************************************************************
   2          Copyright (C), Sinowealth Electronic. Ltd.
   3          Author:         Sino
   4          Version:        V0.0
   5          Date:           2018/08/30
   6          History:
   7                  V0.0            2018/08/30               Preliminary
   8          ********************************************************************************/
   9          
  10          #include "Main.h"
  11          //#include "ExtE2PRomRTC.h"
  12          
  13          
  14          #ifdef TWI_IO_OPERATE 
              /*******************************************************************************
              Function: CRC8Table[]
              Description:
              Input:
              Output:
              Others:
              *******************************************************************************/
              U8 code CRC8Table[]=
              {                                                       //120424-1                      CRC Table
                      0x00,0x07,0x0E,0x09,0x1C,0x1B,0x12,0x15,0x38,0x3F,0x36,0x31,0x24,0x23,0x2A,0x2D,
                      0x70,0x77,0x7E,0x79,0x6C,0x6B,0x62,0x65,0x48,0x4F,0x46,0x41,0x54,0x53,0x5A,0x5D,
                      0xE0,0xE7,0xEE,0xE9,0xFC,0xFB,0xF2,0xF5,0xD8,0xDF,0xD6,0xD1,0xC4,0xC3,0xCA,0xCD,
                      0x90,0x97,0x9E,0x99,0x8C,0x8B,0x82,0x85,0xA8,0xAF,0xA6,0xA1,0xB4,0xB3,0xBA,0xBD,
                      0xC7,0xC0,0xC9,0xCE,0xDB,0xDC,0xD5,0xD2,0xFF,0xF8,0xF1,0xF6,0xE3,0xE4,0xED,0xEA,
                      0xB7,0xB0,0xB9,0xBE,0xAB,0xAC,0xA5,0xA2,0x8F,0x88,0x81,0x86,0x93,0x94,0x9D,0x9A,
                      0x27,0x20,0x29,0x2E,0x3B,0x3C,0x35,0x32,0x1F,0x18,0x11,0x16,0x03,0x04,0x0D,0x0A,
                      0x57,0x50,0x59,0x5E,0x4B,0x4C,0x45,0x42,0x6F,0x68,0x61,0x66,0x73,0x74,0x7D,0x7A,
                      0x89,0x8E,0x87,0x80,0x95,0x92,0x9B,0x9C,0xB1,0xB6,0xBF,0xB8,0xAD,0xAA,0xA3,0xA4,
                      0xF9,0xFE,0xF7,0xF0,0xE5,0xE2,0xEB,0xEC,0xC1,0xC6,0xCF,0xC8,0xDD,0xDA,0xD3,0xD4,
                      0x69,0x6E,0x67,0x60,0x75,0x72,0x7B,0x7C,0x51,0x56,0x5F,0x58,0x4D,0x4A,0x43,0x44,
                      0x19,0x1E,0x17,0x10,0x05,0x02,0x0B,0x0C,0x21,0x26,0x2F,0x28,0x3D,0x3A,0x33,0x34,
                      0x4E,0x49,0x40,0x47,0x52,0x55,0x5C,0x5B,0x76,0x71,0x78,0x7F,0x6A,0x6D,0x64,0x63,
                      0x3E,0x39,0x30,0x37,0x22,0x25,0x2C,0x2B,0x06,0x01,0x08,0x0F,0x1A,0x1D,0x14,0x13,
                      0xAE,0xA9,0xA0,0xA7,0xB2,0xB5,0xBC,0xBB,0x96,0x91,0x98,0x9F,0x8A,0x8D,0x84,0x83,
                      0xDE,0xD9,0xD0,0xD7,0xC2,0xC5,0xCC,0xCB,0xE6,0xE1,0xE8,0xEF,0xFA,0xFD,0xF4,0xF3
              };
              
              /*******************************************************************************
              Function: Delay4us()
              Description: 
              Input:
              Output:
              Others:
              *******************************************************************************/
              void Delay4us(void)
              {
                      U8 i;
                      for(i=0; i<13; i++)
C51 COMPILER V9.01   TWIIO                                                                 02/06/2025 15:28:46 PAGE 2   

                      {
                      }
              }
              
              /*******************************************************************************
              Function:
              1. TwiStart()           
              2. TwiReStart()
              3. TwiStop()
              Input: 
              Output:
              ********************************************************************************/
              void TwiStart(void)
              {
                  TWI_DAT_OUT;
                      TWI_CLK_OUT;
                  
                      TWI_DAT_HIGH;
                      TWI_CLK_HIGH;
                      TWI_DAT_OUT;
                      TWI_CLK_OUT;
                      TWI_DAT_LOW;
                      Delay4us();
                      TWI_CLK_LOW;
              }
              
              void TwiReStart(void)
              {
                      TWI_DAT_HIGH;
                      TWI_CLK_HIGH;
                      Delay4us();
                      TWI_DAT_LOW;
                      Delay4us();
                      TWI_CLK_LOW;
              }
              
              void TwiStop(void)
              {
                      TWI_DAT_OUT;
                      TWI_DAT_LOW;
                      Delay4us();
                      TWI_CLK_HIGH;
                      Delay4us();
                      TWI_DAT_HIGH;
                      Delay4us();
                      TWI_DAT_IN;
                      TWI_CLK_IN;
              }
              
              bit TwiChkClkRelease(void)
              {
                      U16 TimeoutCnt=1000;                            //If Clock is not released within 4ms, is considered overtime
                      BOOL result=0;
              
                      TWI_CLK_IN;
                      while(TimeoutCnt--)
                      {
                              RSTSTAT = 0x00;
                              Delay4us();
                              if(TWI_RD_CLK)
                              {
                                      result = 1;
C51 COMPILER V9.01   TWIIO                                                                 02/06/2025 15:28:46 PAGE 3   

                                      break;
                              }
                      }
              
                      TWI_CLK_HIGH;
                      TWI_CLK_OUT;
                      
                      return result;
              }
              
              
              /*******************************************************************************
              Function: TwiSendData()
              Description: 
              Input: 
              Output:
              ********************************************************************************/
              
              bit TwiSendData(U8 Data, U8 ClkFlg)
              {
                      U8 i;
                      BOOL result=0;
              
              //1. After sending the Start signal, there is no need to detect Clock is released, And sending the first b
             -it
                      if(Data&0x80)
                      {
                              TWI_DAT_HIGH;
                      }
                      else
                      {
                              TWI_DAT_LOW;
                      }
                      if(ClkFlg == 1)
                      {
                              Delay4us();
                              if(TwiChkClkRelease())
                              {
                                      TWI_CLK_LOW;
                              }
                              else
                              {
                                      return result;
                              }
                      }
                      else
                      {
                              Delay4us();
                              TWI_CLK_HIGH;
                              Delay4us();
                              TWI_CLK_LOW;
                      }
                      
              //2. Send the remaining seven bit
                      Data = Data<<1;
                      for(i=0; i<7; i++)
                      {
                              if(Data&0x80)
                              {
                                      TWI_DAT_HIGH;
                              }
                              else
C51 COMPILER V9.01   TWIIO                                                                 02/06/2025 15:28:46 PAGE 4   

                              {
                                      TWI_DAT_LOW;
                              }
                              Data = Data<<1;
                              Delay4us();
                              TWI_CLK_HIGH;
                              Delay4us();
                              TWI_CLK_LOW;
                      }
                      TWI_DAT_IN;
                      Delay4us();
                      
                      for(i=0; i<10; i++)
                      {
                              if(TWI_RD_DAT == 0)
                              {
                                      result = 1;
                                      break;
                              }
                      }
                      TWI_CLK_HIGH;
              
                      Delay4us();
                      TWI_DAT_LOW;
                      TWI_DAT_OUT;
                      TWI_CLK_LOW;
                      Delay4us();
                      
                      return result;
              }
              
              
              /*******************************************************************************
              Function: TwiGetData()
              Description: i2c get data(one byte)
              Input:          R6: 0 means no need send ack
              Output: A: the data received
              ********************************************************************************/
              U8 TwiGetData(U8 AckFlg)
              {
                      U8 i, RdData=0;
                      
                      TWI_DAT_IN;
                      Delay4us();
              
                      for(i=0; i<8; i++)
                      {
                              TWI_CLK_HIGH;
                              Delay4us();
                              if(TWI_RD_DAT)
                              {
                                      RdData |= (1<<(7-i));
                              }
                              TWI_CLK_LOW;
                              Delay4us();
                      }
              
                      TWI_DAT_OUT;
                      if(AckFlg != 0)
                      {
                              TWI_DAT_LOW;
                      }
C51 COMPILER V9.01   TWIIO                                                                 02/06/2025 15:28:46 PAGE 5   

                      else
                      {
                              TWI_DAT_HIGH;
                      }
                      TWI_CLK_HIGH;
                      Delay4us();
                      TWI_CLK_LOW;
                      Delay4us();
                      
                      return RdData;
              }
              
              
              /*******************************************************************************
              Function: CRC8cal()
              Description: 
              Input: 
              Output:
              ********************************************************************************/
              U8 CRC8cal(U8 *p, U8 Length)                       //look-up table calculte CRC 
              {    
                  U8 crc8 = 0;    
                  
                      for(; Length > 0; Length--)
                      {
                              RSTSTAT = 0x00;         
                      crc8 = CRC8Table[crc8^*p];    
                          p++;    
                  } 
                     
                  return(crc8);       
              }
              
              
              /*******************************************************************************
              Function: TWIWrite()
              Description:  write one byte
              Input: SlaveID--Slave Address
                        RegAddr--register addr
                        RegData--register data 
              Output: CY:1--OK
                                0--Error
              ********************************************************************************/
              BOOL TwiWrite(U8 SlaveID, U16 WrAddr, U8 Length, U8 xdata *WrBuf)
              {
                      U8 i;
                  U8 TempBuf[4];
                      BOOL result = 0;
              
                  TempBuf[0] = SlaveID;
                  TempBuf[1] = (U8)WrAddr;
                  TempBuf[2] = *WrBuf;
                  TempBuf[3] = CRC8cal(TempBuf, 3);
                      
                      EA = 0;
                      if(Length > 0)
                      {
                              TwiStart();
                              
                              if(!TwiSendData(SlaveID, 1))                    //Send Slave E2ucID
                              {
                                      goto WrErr;
C51 COMPILER V9.01   TWIIO                                                                 02/06/2025 15:28:46 PAGE 6   

                              }
                              
                              if(SlaveID == E2PROM_ID)
                              {
                                      if(!TwiSendData(WrAddr>>8, 0))          //Send Write Address(High 8bit) For EEPROM
                                      {
                                              goto WrErr;
                                      }
                              }
                              if(TwiSendData(WrAddr, 0))                                      //Send Write Address(Low 8bit)
                              {
                                      result = 1;
                                      for(i=0; i<Length; i++)
                                      {
                                              RSTSTAT = 0x00;
                                              if(TwiSendData(*WrBuf, 0))                      //Send Write Data
                                              {
                                                      WrBuf++;
                                              }
                                              else
                                              {
                                                      result = 0;
                                                      break;
                                              }
                                      }
              
                          if(SlaveID == AFE_CHIP_ID)
                          {
                              if(!TwiSendData(TempBuf[3], 0))            //write CRC
                              {
                                  result = 0;
                              }
                          }
                              }
              WrErr:
                              TwiStop();
                      }
                      EA =1;
                      
                      return result;
              }
              
              
              /*******************************************************************************
              Function: TWIRead()
              Description:read rtc register
              Input:   RdAddr--register addr
                          Lenth   --read data length
                          RdBuf   --data buffer
              Output: 
              Others:
              ********************************************************************************/
              BOOL TwiRead(U8 SlaveID, U16 RdAddr, U8 Length, U8 xdata *RdBuf)
              {
                      U8 i;
                      BOOL result=0;
                  U8 xdata TempBuf[46];
                  U8 RdCrc=0;
              
                  TempBuf[0] = SlaveID;
                  TempBuf[1] = (U8)RdAddr;
              //    TempBuf[2] = Length;
C51 COMPILER V9.01   TWIIO                                                                 02/06/2025 15:28:46 PAGE 7   

                  TempBuf[2] = SlaveID | 0x01;
                      
                      EA = 0;
                      if(Length > 0)
                      {
                              TwiStart();
                              
                              if(!TwiSendData(SlaveID, 1))                    //Send Slave E2ucID
                              {
                                      goto RdErr;
                              }
                              
                              if(SlaveID == E2PROM_ID)
                              {
                                      if(!TwiSendData(RdAddr>>8, 0))          //Send Read Address(High 8bit) For EEPROM
                                      {
                                              goto RdErr;
                                      }
                              }
                              if(!TwiSendData(RdAddr, 0))                             //Send Read Address(Low 8bit)
                              {
                                      goto RdErr;
                              }
              
              //        if(SlaveID==AFE_CHIP_ID)          //CRC
              //        {
              //            if(!TwiSendData(Length, 0))
              //            {
              //                goto RdErr;
              //            }
              //        }
                              
                              TwiReStart();
                              
                              if(TwiSendData(SlaveID|0x1, 0))                 //Send Slave E2ucID
                              {
                                      result = 1;
                          if(SlaveID==AFE_CHIP_ID)
                          {
                                      for(i=0; i<Length+1; i++)
                                      {
                                      if(i == Length)
                                      {
                                      RdCrc = TwiGetData(0);      //Get Data
                                      }
                                      else
                                      {
                                      TempBuf[3+i] = TwiGetData(1);     //Get Data
                                      }
                                      }
              
                              if(RdCrc != CRC8cal(TempBuf, 3+Length))
                              {
                                  result = 0;    
                              }
                              else
                              {
                                  for(i=0; i<Length; i++)
                                  {
                                      *RdBuf = TempBuf[3+i];
                                      RdBuf++;   
                                  }
C51 COMPILER V9.01   TWIIO                                                                 02/06/2025 15:28:46 PAGE 8   

                              }
                          }
                          else
                          {
                              for(i=0; i<Length; i++)
                              {
                                                      RSTSTAT = 0x00;
                                              *RdBuf = TwiGetData(Length-i-1);//Get Data
                                  RdBuf++;
                              }
                          }
                              }
                      
              RdErr:
                              TwiStop();
                      }
                      EA = 1;
                      return result;
              }
              
              
              void TwiInit(void)
              {
                      
              }
              #endif
 450          
 451          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =   ----    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)
