From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Tianchi Huang <gz.eddie.htc@gmail.com>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai] Xenomai 3.0-rc3 Interruption on Arietta G25 (AT91SAM9G25 chip)
Date: Mon, 23 Mar 2015 23:09:35 +0100 [thread overview]
Message-ID: <20150323220935.GA19836@hermes.click-hack.org> (raw)
In-Reply-To: <CAJT0owGYuZ8L47AKM0FdjOw5x3g0cjXcXAFPaL91TaxMun6WBw@mail.gmail.com>
On Mon, Mar 23, 2015 at 12:07:43PM +0100, Tianchi Huang wrote:
> *Hello,*
>
> *I'm now working on project using Arietta G25 board (AT91SAM9G25 chip) on
> which i need to capture 1000 interruptions per second of an external ADC. *
> *I have patched the kernel 3.14.17 with the patch ipipe-core-3.14.17-arm-5
> which i found on GNA. The compilation passed and Xenomai seems to run all
> right. The latency test gave me about 100us as worst value. *
>
> *I make un modele of interruption test as below*
> #include <linux/fs.h>
> #include <linux/fcntl.h>
> #include <linux/gpio.h>
> #include <linux/interrupt.h>
> #include <linux/module.h>
> #include <rtdm/driver.h>
>
> #define GPIO_IN 27
> static rtdm_irq_t irq_rtdm;
> static int handler_interruption(rtdm_irq_t * irq){
> printk(KERN_ALERT "IRQ received!\n");
> return RTDM_IRQ_HANDLED;
> }
>
> static int __init exemple_init (void){
> int err;
> int num_interruption;
> if ((err = gpio_request(GPIO_IN, "test_irq")) != 0) {
> return err;
> }
> if ((err = gpio_direction_input(GPIO_IN)) != 0) {
> gpio_free(GPIO_IN);
> return err;
> }
> numero_interruption = gpio_to_irq(GPIO_IN);
> irq_set_irq_type(numero_interruption, IRQF_TRIGGER_FALLING);
> if ((err = rtdm_irq_request(& irq_rtdm, num_interruption,
> handler_interruption, RTDM_IRQTYPE_EDGE, "test_irq", NULL)) != 0) {
> gpio_free(GPIO_IN);
> return err;
> }
> printk(KERN_ALERT "Driver registed\n");
> rtdm_irq_enable(& irq_rtdm);
> return 0;
> }
>
> static void __exit exemple_exit (void){
> rtdm_irq_disable(& irq_rtdm);
> rtdm_irq_free(&irq_rtdm);
> gpio_free(GPIO_IN);
> }
> module_init(exemple_init);
> module_exit(exemple_exit);
> MODULE_LICENSE("GPL");
>
>
> *It seems that it has been registed and run without no error, as you can
> see just here:*
> root@arietta:/home# cat /proc/xenomai/irq
> IRQ CPU0
> 17: 1 [timer/0]
> 28: 0 test_irq
> 1027: 0 [virtual]
> root@arietta:/home# cat /proc/interrupts
> CPU0
> 16: 31031 AIC 1 at91_tick, at91_rtc, ttyS0
> 18: 1579 AIC 20 at_hdmac
> 19: 0 AIC 21 at_hdmac
> 23: 15338 AIC 12 f0008000.mmc
> 25: 0 AIC 14 f0004000.spi
> 26: 20732 AIC 23 atmel_usba_udc
> 27: 8119 AIC 22 ehci_hcd:usb1, ohci_hcd:usb2
> 28: 1 GPIO 27
> Err: 0
>
> *But, when i generate a signal on GPIO 27, i can see the counter of
> /proc/interrupts increase but not the counter of /proc/xenomai/irq nor the
> message i put in the interrupt handler, as you can see below:*
>
> root@arietta:/home# cat /proc/xenomai/irq
> IRQ CPU0
> 17: 1 [timer/0]
> 28: 0 test_irq
> 1027: 0 [virtual]
> root@arietta:/home# cat /proc/interrupts
> CPU0
> 16: 31031 AIC 1 at91_tick, at91_rtc, ttyS0
> 18: 1579 AIC 20 at_hdmac
> 19: 0 AIC 21 at_hdmac
> 23: 15338 AIC 12 f0008000.mmc
> 25: 0 AIC 14 f0004000.spi
> 26: 20732 AIC 23 atmel_usba_udc
> 27: 8119 AIC 22 ehci_hcd:usb1, ohci_hcd:usb2
> 28: 5459 GPIO 27
> Err: 0
>
> *Do you have any idea of that? I've tried Xenomai 2.6.4 too, but i had the
> same problem. Hope you can help me with this.*
Have you tried calling both rtdm_irq_request and request_irq in the
same driver ?
--
Gilles.
next prev parent reply other threads:[~2015-03-23 22:09 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-23 11:07 [Xenomai] Xenomai 3.0-rc3 Interruption on Arietta G25 (AT91SAM9G25 chip) Tianchi Huang
2015-03-23 22:09 ` Gilles Chanteperdrix [this message]
2015-03-24 15:55 ` Tianchi Huang
2015-03-24 16:01 ` Gilles Chanteperdrix
2015-03-24 16:13 ` Gilles Chanteperdrix
2015-03-25 8:58 ` Tianchi Huang
[not found] ` <CAJT0owE7vtJDWM289=4cNR_LuUqPWAO60nvg9D0NiTQWeN9Xbg@mail.gmail.com>
2015-03-26 14:31 ` Gilles Chanteperdrix
2015-03-26 14:52 ` Tianchi Huang
2015-03-26 14:54 ` Gilles Chanteperdrix
2015-03-26 15:19 ` Tianchi Huang
2015-03-26 15:40 ` Tianchi Huang
2015-03-26 15:44 ` Gilles Chanteperdrix
2015-03-26 15:58 ` Tianchi Huang
2015-03-26 16:00 ` Gilles Chanteperdrix
2015-03-26 16:26 ` Tianchi Huang
2015-03-26 16:35 ` Gilles Chanteperdrix
2015-03-26 16:40 ` Gilles Chanteperdrix
2015-03-26 16:56 ` Tianchi Huang
2015-03-26 16:57 ` Gilles Chanteperdrix
2015-03-26 17:25 ` Tianchi Huang
2015-03-26 14:32 ` Gilles Chanteperdrix
2015-03-26 17:08 ` Paul Janzen
2015-03-26 18:30 ` Gilles Chanteperdrix
2015-03-26 18:51 ` Paul Janzen
2015-03-26 18:58 ` Gilles Chanteperdrix
2015-03-26 19:32 ` Paul Janzen
2015-03-26 19:52 ` Gilles Chanteperdrix
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