Hello Freescale Support Team,
As usual I apologise for my questions, if they have allready been answered in a different discussion.
I am working with the MKL02Z32VFM4 MCU, CodeWarrior v10.5 and not PE.
I am currently programming a Bootloader and therefore small size is of most importance.
Everything works fine, but after I run the Optimization "Optimize size (-Os)" nothing works anymore.
Using the debugger I figured out that the code is stuck at the first "if-Loop".
Here my code of my GetChar UART0 program, where the program is stuck:
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void UART0_GetChar(unsigned char *value, unsigned char block) {
for (;;) {
if (ReceiveChar_Length > 0) { /* Is number of received chars greater than 0? */
NVIC_ICER |= NVIC_ICER_CLRENA(0x1000); /* Deactivate Rx-Interrupt. */
ReceiveChar_Length--; /* Decrease number of remaining received chars. */
NVIC_ICPR |= NVIC_ICPR_CLRPEND_MASK; /* Clear any Pending Interrupts. */
NVIC_ISER |= NVIC_ISER_SETENA(0x1000); /* Activate Rx-Interrupt. */
*value = InpBuffer[InpIndexR++]; /* Take value out of the buffer. */
if (InpIndexR >= RECEIVE_BUF_SIZE) { /* Is the index out of the receive buffer? */
InpIndexR = 0; /* Set index to the first item into the receive buffer. */
}
break;
}
else {
*value = -1;
if (!block) {
break;
}
}
}
}
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block gets the value 1. The Interrupt still works fine, but then it just jumps back to if (!block) and stays there.
I believe that there will be even more problems after this issue is solved.
The Optimization would really help, because it reduces the size from about 5000 to 2900.
I thank everyone in advance for your great support,
Edward.
