Re: bytes from mouse

[Maikon Bueno <maikon@gmail.com>]

Hi...   
Thanks, but I couldn't do that... I already had loaded the module and whenever
the   mouse changes its state, I receive some bytes   from serial, in the 0x3f8
address, but these bytes don't follow the mouse standard encoding.
I don't know what is the error.


On Tue, 27 Jul 2004 21:02:00 +0200, Vojtech Pavlik <vojtech@suse.cz> wrote:
> On Tue, Jul 27, 2004 at 12:40:50PM -0300, Maikon Bueno wrote:
> 
> > Hi all,
> > In the follow code, I try to get the bytes from the mouse, but the
> > bytes that I got are always either 0 or -128, in any state of mouse
> > (with or without pressed buttons).
> > I'm using COM1 and I read the bytes from the 0x3f8 port.
> > Am I reading the values from the correct address? Is there other way to do that?
> >
> > Thanks.
> 
> How about
> 
> modprobe serport
> modprobe sermouse
> inputattach --msc /dev/ttyS0 &
> 
> 
> 
> > --------------------------
> >
> >
> >
> > #define MODULE
> > #define __KERNEL__
> >
> > #include<linux/ioport.h>
> > #include <linux/config.h>
> >
> > #include <linux/module.h>
> >
> > #include<linux/sched.h>
> > #include<linux/poll.h>
> > #include<linux/interrupt.h>
> > #include<linux/miscdevice.h>
> > #include<linux/init.h>
> >
> > #include <linux/kernel.h>
> > #include<linux/slab.h>
> > #include <linux/fs.h>
> > #include <linux/errno.h>
> > #include <linux/types.h>
> > #include <linux/proc_fs.h>
> > #include <linux/fcntl.h>
> > #include <linux/devfs_fs_kernel.h>
> >
> > #include <linux/string.h>
> > #include <linux/unistd.h>
> > #include <asm/system.h>
> > #include <asm/io.h>
> > #include <asm/irq.h>
> > #define PORT 0x3f8 //COM1
> > #define LCR  3
> > #define MSB 1
> > #define LSB 0
> > #define FCR 2
> > #define SCR 7
> >
> > #define OURMOUSE_BASE 0x300
> > #define OURMOUSE_MINOR 1
> > #define OURMOUSE_MAJOR 56
> > #define MOUSE_IRQ 4 //COM1
> >
> > static int mouse_users = 0;
> > static int mouse_dx = 0;
> > static int mouse_dy = 0;
> > static int mouse_event = 0;
> > static int mouse_buttons = 0;
> > static int mouse_intr = MOUSE_IRQ;
> > static int interrupt_count=0;
> >
> > static struct wait_queue *mouse_wait;
> > static spinlock_t mouse_lock = SPIN_LOCK_UNLOCKED;
> > static devfs_handle_t ourmouse_dir;
> > static devfs_handle_t ourmouse_dev;
> >
> > static int ourmouse_open(struct inode *inode, struct file *file);
> > static int ourmouse_close(struct inode *inode,struct file *file);
> > static void ourmouse_interrupt(int irq, void *dev_id, struct pt_regs *regs);
> > static unsigned int mouse_poll(struct file *file, poll_table *wait);
> > static int enable_irq_interrupt();
> >
> > static int bufferin;
> > static int bufferout;
> > static char buffer[1024];
> > static unsigned interrupt_enabled = 0;
> >
> > MODULE_LICENSE("GPL");
> > MODULE_AUTHOR("OURMOUSE");
> >
> > char ourmouse_str[] = "Hi Baby!\n ";
> >
> > ssize_t ourmouse_read(struct file *filp , char *buf,
> >                  size_t count, loff_t *offp)
> > {
> >     struct inode *inode = filp->f_dentry->d_inode;
> >     int minor = MINOR(inode->i_rdev);
> >     char *txt;
> >
> >     if (filp->private_data) {
> >         txt = filp->private_data;
> >     } else {
> >         txt = ourmouse_str;
> >     }
> >     if (count > strlen(txt)) count = strlen(txt);
> >     copy_to_user(buf, txt, count);
> >     *offp += count;
> >     return count;
> > }
> >
> > struct file_operations ourmouse_fops = {
> >           read:   ourmouse_read,
> >           open:   ourmouse_open,
> >           release:  ourmouse_close,
> > };
> >
> > int init_module(void){
> >       printk("<1> initing\n");
> >       if(check_region(OURMOUSE_BASE, 3))
> >               return -ENODEV;
> >       request_region(OURMOUSE_BASE, 3,"Ourmouse");
> >
> >       devfs_register_chrdev(OURMOUSE_MAJOR,"Ourmouse",&ourmouse_fops);
> >       ourmouse_dir = devfs_mk_dir(NULL,"Ourmouse", NULL);
> >       if(ourmouse_dir == NULL){
> >               printk("<1> Couldn't make the Ourmouse's dir\n");
> >       }
> >       ourmouse_dev = devfs_register(ourmouse_dir,
> > "Ourmouse",DEVFS_FL_NONE,OURMOUSE_MAJOR,OURMOUSE_MINOR, S_IFCHR |
> > S_IRUGO,&ourmouse_fops, NULL);
> >       if (ourmouse_dev == NULL){
> >               printk("<1> Couldn't register Ourmouse\n");
> >       }
> >
> >       interrupt_enabled=!enable_irq_interrupt();
> >       if (!interrupt_enabled)
> >         return -EBUSY;
> >
> >       return 0;
> > }
> >
> > void cleanup_module(void){
> >       release_region(OURMOUSE_BASE, 3);
> >       devfs_unregister(ourmouse_dev);
> >       free_irq(mouse_intr, NULL);
> >       printk("<1> Bye %i\n",interrupt_count);
> > }
> >
> > static int ourmouse_open(struct inode *inode, struct file *file)
> > {
> >     int err = 0;
> >     if(mouse_users++)
> >         return 0;
> >     if(!interrupt_enabled)
> >     {
> >       mouse_users--;
> >         return -EBUSY;
> >     }
> >
> >     mouse_dx = 0;
> >     mouse_dy = 0;
> >     mouse_buttons = 0;
> >     mouse_event = 0;
> >     MOD_INC_USE_COUNT;
> >
> >     return 0;
> > }
> >
> > static int ourmouse_close(struct inode *inode,struct file *file)
> > {
> >     if(--mouse_users)
> >             return 0;
> >     MOD_DEC_USE_COUNT;
> >     return 0;
> > }
> >
> > static void ourmouse_interrupt(int irq, void *dev_id, struct pt_regs *regs)
> > {
> >     //interrupt_count++;
> >
> >       int i;
> >       do {
> >               i = inb(PORT + 5);
> >               if (i & 1) {
> >                       buffer[bufferin] = inb(PORT);
> >                       printk("<1> Byte %i: %i\n",bufferin,buffer[bufferin]);
> >                       bufferin++;
> >                       if (bufferin == 1024) bufferin = 0;
> >               }
> >       }while (i & 1);
> >
> > }
> >
> > static unsigned int mouse_poll(struct file *file, poll_table *wait)
> > {
> >     return 0;
> > }
> >
> > static int enable_irq_interrupt()
> > {
> >       unsigned long flags;
> >       int i;
> >       bufferin = 0;
> >       bufferout = 0;
> >       save_flags(flags); cli();
> >       i=request_irq(mouse_intr,ourmouse_interrupt,SA_INTERRUPT,"Ourmouse",NULL);
> >       if(i) {
> >               restore_flags(flags);
> >               return i;
> >       }
> >       outb(0,PORT + 1);     // Turn off interrupts - Port1
> >       outb(0,PORT + 1);     // Disable interrupts - bit 0 ->0
> >       outb(0x80,PORT + 3);  // enable DLAB - bit 7 ->1
> >       outb(0x0C,PORT + 0);  // Set Divisor LSB
> >       outb(0x00,PORT + 1);  // Set Divisor MSB
> >       outb(0x03,PORT + 3);  // 8 Bits, No Parity, 1 Stop Bit
> >       outb(0xC7,PORT + 2);  // Enable FIFO if UART is 16500+
> >       outb(0x0B,PORT + 4);  // Turn on DTR, RTS, and OUT2
> >       outb(0x01,PORT + 1);  // Interrupt when data received
> >       printk("<1> sioEnable --ok ... irq: %d\n", mouse_intr);
> >       restore_flags(flags);
> >       return 0;
> >
> > }
> > -
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> 
> --
> Vojtech Pavlik
> SuSE Labs, SuSE CR
>