IAR Problem

Hi Li,

Look thru this thread, follow the suggestions in the posts.

Br,

Igor

thank you very much Igor

I tried the  methods in the post but it still doesn't work..

Problem is

in the debug mode I run it step by step then I see the value change in the register ,

if I click 'go',nothing change, looks like the program just 'jump through' some functions

I am confused.....

Hi Li,

Is it "skips" variables or is it more "jumps through" whole functions?

The IAR does optimization to the code, so sometimes it "skips" the

lines in your code, where actually it jumps to procedure in assembly

level, and executes it there.

Very uncomfortable to debug, however it works. In case you see that

IAR jumps over lines in C code and the functionality you designed

still works, this an accepted behaviour.

If it is not the case, is the behaviour you see while debugging is the

same behaviour you see when your device unplugged.

Br,

Igor

Thank you Igor

It is more like "skips" variables,because programm goes into the function and stops at the breakpoint I set

But the variables only change when I run the programm step by step.....otherwise nothing changes

Hi Li,

Can you please post the suspicious code?

Br,

Igor 

here is the code

I use the Sensor Demo

in the original DemoSensor.c

static void sendReport(void)

{......

// Read and report temperature value
  pData[SENSOR_TEMP_OFFSET] =  readTemp();

......

 zb_SendDataRequest( 0xFFFE, SENSOR_REPORT_CMD_ID, SENSOR_REPORT_LENGTH, pData, 0, txOptions, 0 );
}

I want to send a data from acceleration sensor which connect the board with SPI

so here is my code

static void sendReport(void)

{......

// Read and report Acc value
  pData[X_L] = Read_From_Register(0xA8);

......

 zb_SendDataRequest( 0xFFFE, SENSOR_REPORT_CMD_ID, SENSOR_REPORT_LENGTH, pData, 0, txOptions, 0 );
}

//**********************Read_From_Register******************************************//

static int8  Read_From_Register(int8 register_address )
{     
      static int8 accleration;
     
    #if defined (HAL_MCU_CC2530)   
       SPI_INIT( );
      
       SSN = LOW;
     //  read from register
     U1DBUF = register_address;
   while (!U1TX_BYTE);
     U1TX_BYTE = 0;
    
     U1DBUF = 0x00;
   while (!U1TX_BYTE);
     accleration = U1DBUF;// read the data from Sensor
     U1TX_BYTE = 0;
     SSN = HIGH;
       
      return(accleration); 
       #else
  return 0;
  #endif
     
}


//**********SPI_INIT *********************

static void SPI_INIT(void)
{
 
 
  //*********USART1,Alternative 2****************
   PERCFG |= 0x02;        // PERCFG.U1CFG = 1
   P1SEL |= 0xE0;         // P1_7, P1_6, and P1_5 are peripherals
   P1SEL &= ~0x10;        // P1_4 is GPIO (SSN)
   P1DIR |= 0x10;         // SSN is set as output
  
  // init_Baudrate
  //********** Set baud rate to 2400*************
    U1BAUD = 0x3B;   // BAUD_M = 59
    U1GCR &= 0xE0;
    U1GCR |= 0x06;   // BAUD_E = 6
 
  // SPI Master Mode
  U1CSR &= ~0xA0;  
 
   
  // Configure phase, polarity, and bit order
      U1GCR |= 0xC0;          // CPOL = 1  CPHA = 1
       U1GCR |= 0x20;          // ORDER = 1
 
//********Sensor Init************************ 
  SSN = LOW;
  //Write C7 to CTRL_REG1  
     U1DBUF = 0x20;
   while (!U1TX_BYTE);
     U1TX_BYTE = 0;
    
     U1DBUF = 0xC7;
   while (!U1TX_BYTE);
     U1TX_BYTE = 0;
     SSN = HIGH;
 
 }

So in the debug mode the program goes into the Read_From_Register( ) Function, the U1DBUF and accleration value change like I expect. at this time I stop the debug mode it runs normally,   But if I just download the program into chip without debug  or  I reset the chip, It doesn't work. So every time I have to start the system by running in the debug mode first  and I can not reset the system......

thank you

 thank you very very  much Dirty Harry

I rewrite the SPI part according to the following code

#define LCD_SPI_TX(x)                   { U1CSR &= ~(BV(2) | BV(1)); U1DBUF = x; while( !(U1CSR & BV(1)) ); }
#define LCD_SPI_WAIT_RXRDY()            { while(!(U1CSR & BV(1))); }

and now it works

Thank you so much