Posted on May 17, 2011 at 09:45I am using mcbstr9 and IAR compiler + str91xstdlib.
In
main-program I initialize TIM0 ISR in the next way:
Quote:
TIM_StructInit(&TIM_InitStructure);
/* 22.050 KHz generation */
TIM_InitStructure.TIM_Mode = TIM_OCM_CHANNEL_1;
TIM_InitStructure.TIM_OC1_Modes = TIM_TIMING;
TIM_InitStructure.TIM_Clock_Source = TIM_CLK_APB;
TIM_InitStructure.TIM_Prescaler = 0x1;
TIM_InitStructure.TIM_Pulse_Length_1 = 0x440;
/* Initialize the Timer 0 */
TIM_Init (TIM0, &TIM_InitStructure);
// Enable IRQ for Timer 0 on Priority Lvl 1
VIC_Config(TIM0_ITLine, VIC_IRQ, 1);
VIC_ITCmd(TIM0_ITLine, ENABLE);
TIM_ITConfig(TIM0, TIM_IT_OC1, ENABLE);
TIM_CounterCmd(TIM0, TIM_START);
/* ISR address request... */
isr_addr = VIC_GetISRVectAdd(TIM0_ITLine); In the last line in above code I am trying to check ISR-addr and store it in
u32 isr_addr...
Evrithing works good (initialization, ISR-routine and so on...) exclude the
isr_addr remain 0!!! :o
Inside
91x_vic.c I found ISR-initialization code:
Quote:
static void VIC_ISRVectAddConfig(u16 VIC_Source, u16 VIC_Priority,
void (*VIC_VectAddress)(void))
{
if (VIC_Source < VIC_REGISTER_NUMBER) /* VIC0 */
VIC0->VAiR[
VIC_Priority] = (u32)VIC_VectAddress;
else /* VIC1 */
VIC1->VAiR[
VIC_Priority] = (u32)VIC_VectAddress;
}
and one more initialization function:
Quote:
static void VIC_VectEnableConfig(u16 VIC_Source, u16 VIC_Priority)
{
if (VIC_Source < VIC_REGISTER_NUMBER) /* VIC0 */
VIC0->VCiR[
VIC_Priority] |= VIC_VECTOR_ENABLE_MASK;
else /* VIC1 */
VIC1->VCiR[
VIC_Priority] |= VIC_VECTOR_ENABLE_MASK;
}
In both fuction above structure VIC0->VCiR[] (VIC1->VCiR[]) and VIC0->VCiR[](VIC1->VCiR[]) indexed VIC_Priority, but VIC_GetISRVectAdd function tryed to extract ISR-rutine information in another way:
Quote:
u32 VIC_GetISRVectAdd(u16 VIC_Source)
{
if (VIC_Source < VIC_REGISTER_NUMBER) /* VIC0 */
return VIC0->VAiR[
VIC_Source</b>];
else /* VIC1 */
return VIC1->VAiR[VIC_Source - VIC_REGISTER_NUMBER</b>];
}
and as a result it return zeros instead ISR-routine address. :( After this shot reseach I made changes in 91x_vic.c module inside VIC_ISRVectAddConfig, VIC_VectEnableConfig and VIC_ITSourceConfig fuctions :
Quote:
.......
static void VIC_ISRVectAddConfig(u16 VIC_Source, u16 VIC_Priority,
void (*VIC_VectAddress)(void))
{
if (VIC_Source < VIC_REGISTER_NUMBER) /* VIC0 */
VIC0->VAiR[
VIC_Source] = (u32)VIC_VectAddress;
else /* VIC1 */
VIC1->VAiR[
VIC_Source - VIC_REGISTER_NUMBER] = (u32)VIC_VectAddress;
}
....
.....
static void VIC_VectEnableConfig(u16 VIC_Source, u16 VIC_Priority)
{
if (VIC_Source < VIC_REGISTER_NUMBER) /* VIC0 */
VIC0->VCiR[
VIC_Source] |= VIC_VECTOR_ENABLE_MASK;
else /* VIC1 */
VIC1->VCiR[
VIC_Source - VIC_REGISTER_NUMBER] |= VIC_VECTOR_ENABLE_MASK;
}
...
static void VIC_ITSourceConfig(u16 VIC_Source, u16 VIC_Priority)
{
if (VIC_Source < VIC_REGISTER_NUMBER) /* VIC0 */
{
VIC0->VCiR[
VIC_Source] &= VIC_IT_SOURCE_MASK;
VIC0->VCiR[
VIC_Source] |= VIC_Source;
}
else /* VIC1 */
{
VIC1->VCiR[
VIC_Source - VIC_REGISTER_NUMBER] &= VIC_IT_SOURCE_MASK;
VIC1->VCiR[
VIC_Source - VIC_REGISTER_NUMBER] |= VIC_Source - VIC_REGISTER_NUMBER;
}
}
...
After retesting my program I found that everythig works in true way and now
isr_addr got true value - address of
void TIM0_IRQHandler(void).
So, my main question is:
Do I found Bug in 91x_vic.c modules or all above is only my missunderstading internal structures of str91xstdlib-library? :-Y :-Y :-Y
[ This message was edited by: NikolayZ on 26-07-2007 22:56 ]
