Hello everybody,



I am currently trying to understand the code generated by my model but I have some difficulties with the UART_Tx bloc.

Here is the code :



/* S-Function "UART_Tx" Block: <Root>/Tx Output */

{

uint8_T Tmp;



do {

Tmp = ~(TxPtrHaut_Uart1 - TxPtrBas_Uart1);/* Tmp = 7 - (Haut - Bas) modulo 32 */

Tmp = Tmp & (32-1);

} while (Tmp == 0);



TxTab_Uart1[TxPtrHaut_Uart1] = testI2C_B.Output;

TxPtrHaut_Uart1 = (TxPtrHaut_Uart1 + 1) & (32-1);

_U1TXIF = 1;

_U1TXIE = 1;

}



I understand that Tmp is local and won't exist anymore once we left the function.

I tried to solve it on paper to be sure I understand properly but for me the value of "TxPtrBas_Uart1" is never changed. It is initialised at 0 and stay this way. So at the second iteration we wil enter the do-while loop and stay in it forever.



Am I getting this wrong? Does TxPtrBas_Uart1 is changed somewhere else? I tried ctrl F in every file but did not found any line modifying this varaible.



Thanks,

Helene

It's me again



Sorry, I found the answer to my question. My dsPIC_UART1_Interrupt.c file was missing on MPLAB and TxPtrBas is modified in it.



Problem solved.



Helene

It's me again.