* Re: [ECOS] E7T timer0 interrupt issue ?
2002-05-20 20:31 ` [ECOS] E7T timer0 interrupt issue ? peter_ku
@ 2002-05-20 20:56 ` Simoncc
2002-05-21 7:34 ` Gary Thomas
2002-05-22 8:22 ` peter_ku
2 siblings, 0 replies; 9+ messages in thread
From: Simoncc @ 2002-05-20 20:56 UTC (permalink / raw)
To: ecos-discuss
Peter,
As I knew, you can not invoke any interrupt in your "user_start"
program.
Only you can do that in driver.
Simon
----- Original Message -----
From: "peter_ku" <peter_ku@issc.com.tw>
To: <ecos-discuss@sources.redhat.com>
Sent: Tuesday, May 21, 2002 11:31 AM
Subject: [ECOS] E7T timer0 interrupt issue ?
> Hello,
>
> Target = E7T.
> I write a simple program to test timer0 interrupt, I want to toggle the
led every 1sec. But I can't enter my ISR.
> I can see the INTPND = 0x400, and also see my timer0 running!!
> Anyone can check the following code?
>
> thanks a lot
> Peter
>
>
> #define TOTAL_THREADS 1
>
> cyg_thread threads[TOTAL_THREADS];
>
> cyg_handle_t handle_thread_show_led;
> cyg_handle_t handle_timer0_isr;
>
> cyg_interrupt isr;
>
> char stack[TOTAL_THREADS][4096];
>
> cyg_thread_entry_t show_led_proc;
> cyg_ISR_t Timer0_ISR;
> cyg_DSR_t Timer0_DSR;
>
> void cyg_user_start(void)
> {
> cyg_thread_create(4, show_led_proc , (cyg_addrword_t) 0 , "THREAD SHOW
LED", (void *) stack[0], 4096,
> &handle_thread_show_led, &threads[0]);
>
>
> cyg_interrupt_create(CYGNUM_HAL_INTERRUPT_TIMER0,99,0,Timer0_ISR,
Timer0_DSR, &handle_timer0_isr, &isr);
>
> cyg_interrupt_attach(handle_timer0_isr);
>
> HAL_WRITE_UINT32(E7T_TDATA0,50000000);
> HAL_WRITE_UINT32(E7T_TMOD,E7T_TMOD_TE0 | E7T_TMOD_TMD0);
>
> cyg_interrupt_unmask(CYGNUM_HAL_INTERRUPT_TIMER0);
> cyg_interrupt_enable();
>
>
> cyg_thread_resume(handle_thread_show_led);
>
>
> }
>
>
>
>
> void show_led_proc(cyg_addrword_t data)
> {
>
> int i,j;
> int temp_data;
>
>
> HAL_READ_UINT32(E7T_IOPDATA,temp_data);
> temp_data |= 0xf0;
> HAL_WRITE_UINT32(E7T_IOPDATA,temp_data);
>
> for( ; ; )
> {
> for( i =0 ; i < 10 ; i++)
> {
>
> HAL_READ_UINT32(E7T_IOPDATA,temp_data);
> temp_data &= ~SEG_MASK;
> temp_data |= numeric_display[i];
> HAL_WRITE_UINT32(E7T_IOPDATA,temp_data);
> for(j = 0; j < 10000000; j++) { }
> }
>
> }
>
> }
>
>
> cyg_uint32 Timer0_ISR(cyg_vector_t vector, cyg_addrword_t data)
> {
>
> cyg_uint32 temp_data;
> HAL_READ_UINT32(E7T_IOPDATA,temp_data);
> temp_data ^= 0xf0;
> HAL_WRITE_UINT32(E7T_IOPDATA,temp_data);
>
> cyg_interrupt_acknowledge(vector);
>
> return CYG_ISR_HANDLED;
> }
>
> void Timer0_DSR(cyg_vector_t vector,cyg_ucount32 count, cyg_addrword_t
data)
> {
>
> }
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [ECOS] E7T timer0 interrupt issue ?
2002-05-20 20:31 ` [ECOS] E7T timer0 interrupt issue ? peter_ku
2002-05-20 20:56 ` Simoncc
@ 2002-05-21 7:34 ` Gary Thomas
2002-05-22 8:22 ` peter_ku
2 siblings, 0 replies; 9+ messages in thread
From: Gary Thomas @ 2002-05-21 7:34 UTC (permalink / raw)
To: peter_ku; +Cc: eCos Discussion
On Mon, 2002-05-20 at 21:31, peter_ku wrote:
> Hello,
>
> Target = E7T.
> I write a simple program to test timer0 interrupt, I want to toggle the led every 1sec. But I can't enter my ISR.
> I can see the INTPND = 0x400, and also see my timer0 running!!
> Anyone can check the following code?
>
You need to start the kernel/scheduler, which in turn enables
interrupts. If you use cyg_start() or cyg_user_start(), this has to be
done manually (see below). Alternatively, use main() instead of
cyg_user_start().
> thanks a lot
> Peter
>
>
> #define TOTAL_THREADS 1
>
> cyg_thread threads[TOTAL_THREADS];
>
> cyg_handle_t handle_thread_show_led;
> cyg_handle_t handle_timer0_isr;
>
> cyg_interrupt isr;
>
> char stack[TOTAL_THREADS][4096];
>
> cyg_thread_entry_t show_led_proc;
> cyg_ISR_t Timer0_ISR;
> cyg_DSR_t Timer0_DSR;
>
> void cyg_user_start(void)
> {
> cyg_thread_create(4, show_led_proc , (cyg_addrword_t) 0 , "THREAD SHOW LED", (void *) stack[0], 4096,
> &handle_thread_show_led, &threads[0]);
>
>
> cyg_interrupt_create(CYGNUM_HAL_INTERRUPT_TIMER0,99,0,Timer0_ISR, Timer0_DSR, &handle_timer0_isr, &isr);
>
> cyg_interrupt_attach(handle_timer0_isr);
>
> HAL_WRITE_UINT32(E7T_TDATA0,50000000);
> HAL_WRITE_UINT32(E7T_TMOD,E7T_TMOD_TE0 | E7T_TMOD_TMD0);
>
> cyg_interrupt_unmask(CYGNUM_HAL_INTERRUPT_TIMER0);
> cyg_interrupt_enable();
>
>
> cyg_thread_resume(handle_thread_show_led);
>
cyg_scheduler_start();
>
> }
>
>
>
>
> void show_led_proc(cyg_addrword_t data)
> {
>
> int i,j;
> int temp_data;
>
>
> HAL_READ_UINT32(E7T_IOPDATA,temp_data);
> temp_data |= 0xf0;
> HAL_WRITE_UINT32(E7T_IOPDATA,temp_data);
>
> for( ; ; )
> {
> for( i =0 ; i < 10 ; i++)
> {
>
> HAL_READ_UINT32(E7T_IOPDATA,temp_data);
> temp_data &= ~SEG_MASK;
> temp_data |= numeric_display[i];
> HAL_WRITE_UINT32(E7T_IOPDATA,temp_data);
> for(j = 0; j < 10000000; j++) { }
> }
>
> }
>
> }
>
>
> cyg_uint32 Timer0_ISR(cyg_vector_t vector, cyg_addrword_t data)
> {
>
> cyg_uint32 temp_data;
> HAL_READ_UINT32(E7T_IOPDATA,temp_data);
> temp_data ^= 0xf0;
> HAL_WRITE_UINT32(E7T_IOPDATA,temp_data);
>
> cyg_interrupt_acknowledge(vector);
>
> return CYG_ISR_HANDLED;
> }
>
> void Timer0_DSR(cyg_vector_t vector,cyg_ucount32 count, cyg_addrword_t data)
> {
>
> }
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss
^ permalink raw reply [flat|nested] 9+ messages in thread* RE: [ECOS] E7T timer0 interrupt issue ?
2002-05-20 20:31 ` [ECOS] E7T timer0 interrupt issue ? peter_ku
2002-05-20 20:56 ` Simoncc
2002-05-21 7:34 ` Gary Thomas
@ 2002-05-22 8:22 ` peter_ku
2002-05-28 12:28 ` Jonathan Larmour
2 siblings, 1 reply; 9+ messages in thread
From: peter_ku @ 2002-05-22 8:22 UTC (permalink / raw)
To: ecos-discuss
I found the casue that I can't enter my ISR.
Because I use timer0, if I change to timer1, everything is fine.
I guess eCos use timer0 to do something, right ???
If I have to use timer0 ISR to do something , what should I do?
Peter
-----Original Message-----
From: ecos-discuss-owner@sources.redhat.com [mailto:ecos-discuss-owner@sources.redhat.com]On Behalf Of peter_ku
Sent: Tuesday, May 21, 2002 11:31 AM
To: ecos-discuss@sources.redhat.com
Subject: [ECOS] E7T timer0 interrupt issue ?
Hello,
Target = E7T.
I write a simple program to test timer0 interrupt, I want to toggle the led every 1sec. But I can't enter my ISR.
I can see the INTPND = 0x400, and also see my timer0 running!!
Anyone can check the following code?
thanks a lot
Peter
#define TOTAL_THREADS 1
cyg_thread threads[TOTAL_THREADS];
cyg_handle_t handle_thread_show_led;
cyg_handle_t handle_timer0_isr;
cyg_interrupt isr;
char stack[TOTAL_THREADS][4096];
cyg_thread_entry_t show_led_proc;
cyg_ISR_t Timer0_ISR;
cyg_DSR_t Timer0_DSR;
void cyg_user_start(void)
{
cyg_thread_create(4, show_led_proc , (cyg_addrword_t) 0 , "THREAD SHOW LED", (void *) stack[0], 4096,
&handle_thread_show_led, &threads[0]);
cyg_interrupt_create(CYGNUM_HAL_INTERRUPT_TIMER0,99,0,Timer0_ISR, Timer0_DSR, &handle_timer0_isr, &isr);
cyg_interrupt_attach(handle_timer0_isr);
HAL_WRITE_UINT32(E7T_TDATA0,50000000);
HAL_WRITE_UINT32(E7T_TMOD,E7T_TMOD_TE0 | E7T_TMOD_TMD0);
cyg_interrupt_unmask(CYGNUM_HAL_INTERRUPT_TIMER0);
cyg_interrupt_enable();
cyg_thread_resume(handle_thread_show_led);
}
void show_led_proc(cyg_addrword_t data)
{
int i,j;
int temp_data;
HAL_READ_UINT32(E7T_IOPDATA,temp_data);
temp_data |= 0xf0;
HAL_WRITE_UINT32(E7T_IOPDATA,temp_data);
for( ; ; )
{
for( i =0 ; i < 10 ; i++)
{
HAL_READ_UINT32(E7T_IOPDATA,temp_data);
temp_data &= ~SEG_MASK;
temp_data |= numeric_display[i];
HAL_WRITE_UINT32(E7T_IOPDATA,temp_data);
for(j = 0; j < 10000000; j++) { }
}
}
}
cyg_uint32 Timer0_ISR(cyg_vector_t vector, cyg_addrword_t data)
{
cyg_uint32 temp_data;
HAL_READ_UINT32(E7T_IOPDATA,temp_data);
temp_data ^= 0xf0;
HAL_WRITE_UINT32(E7T_IOPDATA,temp_data);
cyg_interrupt_acknowledge(vector);
return CYG_ISR_HANDLED;
}
void Timer0_DSR(cyg_vector_t vector,cyg_ucount32 count, cyg_addrword_t data)
{
}
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [ECOS] E7T timer0 interrupt issue ?
2002-05-22 8:22 ` peter_ku
@ 2002-05-28 12:28 ` Jonathan Larmour
0 siblings, 0 replies; 9+ messages in thread
From: Jonathan Larmour @ 2002-05-28 12:28 UTC (permalink / raw)
To: peter_ku; +Cc: ecos-discuss
peter_ku wrote:
>
> I found the casue that I can't enter my ISR.
> Because I use timer0, if I change to timer1, everything is fine.
> I guess eCos use timer0 to do something, right ???
Yes the kernel uses it for all timing related operations.
> If I have to use timer0 ISR to do something , what should I do?
Obviously either you have to use some either timer, or change the eCos E7T
port to use some other timer.
Or if you aren't interested in using the eCos kernel, for your example
program you could maybe get away with just calling show_led_proc directly
after cyg_interrupt_enable(). You should remove the eCos kernel
(CYGPKG_KERNEL) completely to do this though as otherwise it will include
some startup code to attach its own interrupt handler to timer 0.
And also in that case you should use the driver API (e.g.
cyg_drv_interrupt_enable() etc.)
Jifl
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Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss
^ permalink raw reply [flat|nested] 9+ messages in thread