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Re: Serial interrupts on the AEB
- From: Gary Thomas <gthomas at ecoscentric dot com>
- To: "Gareth ." <the_african at hotmail dot com>
- Cc: eCos Discussion <ecos-discuss at sources dot redhat dot com>
- Date: 12 Dec 2002 16:09:02 -0700
- Subject: Re: [ECOS] Serial interrupts on the AEB
- References: <F44IWeTlhxvzSoBJHsx0001e807@hotmail.com>
On Thu, 2002-12-12 at 15:58, Gareth . wrote:
> Hi,
>
> I'm having some trouble getting the serial port to set off an interrupt on
> the ARM evaluator board. I have successfuly got the interrupt button on the
> board to set off an interrupt and have appled the same stratergy to the
> serial port. To get the button to interrupt I used :
>
> cyg_interrupt_creat(CYGNUM_HAL_INTERRUPT_EXT0, 0, 0, &button_isr,
> &button_dsr, &button_isr_handle, &intr);
> cyg_interrupt_attatch(button_isr_handle);
> cyg_interrupt_enable();
>
> Now every time the button is pressed the function button_isr is called.
> To get the serial interrupt working I did :
>
> cyg_interrupt_creat(CYGNUM_HAL_INTERRUPT_UART0, 0, 0, &serial_isr,
> &serial_dsr, &serial_isr_handle, &intr);
> cyg_interrupt_attatch(serial_isr_handle);
>
> But now nothing happens when data is sent to the serial port. I am thinking
> global interrupts must be enabled or else the interrupt button would not
> work. Is it possible interrupts on the uart are not enabled? I do not think
> this is the case because I can get data from the serial line using scanf so
> the port must be configured properly.
>
> Can anyone offer any advice?
Have you looked at the serial device driver for the AEB? It uses
interrupts and works just fine.
BTW - why not just use the serial device driver?
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Gary Thomas |
eCosCentric, Ltd. |
+1 (970) 229-1963 | eCos & RedBoot experts
http://www.ecoscentric.com/ |
email: <gthomas@ecoscentric.com> |
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