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Changeset 75732da in mainline for uspace/app/virtusbkbd/virtusbkbd.c


Ignore:
Timestamp:
2010-12-13T07:20:20Z (11 years ago)
Author:
Vojtech Horky <vojtechhorky@…>
Branches:
lfn, master
Children:
309dea52
Parents:
84439d7 (diff), 37f7cfe (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.
Message:

Merge development/ changes

File:
1 edited

Legend:

Unmodified
Added
Removed
  • uspace/app/virtusbkbd/virtusbkbd.c

    r84439d7 r75732da  
    5555#include "stdreq.h"
    5656
    57 #define LOOPS 5
     57/** Pause between individual key-presses in seconds. */
     58#define KEY_PRESS_DELAY 2
    5859#define NAME "virt-usb-kbd"
    5960
     
    8384}
    8485
     86/** Compares current and last status of pressed keys.
     87 *
     88 * @warning Has side-efect - changes status_last field.
     89 *
     90 * @param status_now Status now.
     91 * @param status_last Last status.
     92 * @param len Size of status.
     93 * @return Whether they are the same.
     94 */
     95static bool keypress_check_with_last_request(uint8_t *status_now,
     96    uint8_t *status_last, size_t len)
     97{
     98        bool same = true;
     99        size_t i;
     100        for (i = 0; i < len; i++) {
     101                if (status_now[i] != status_last[i]) {
     102                        status_last[i] = status_now[i];
     103                        same = false;
     104                }
     105        }
     106        return same;
     107}
     108
    85109static int on_request_for_data(struct usbvirt_device *dev,
    86110    usb_endpoint_t endpoint, void *buffer, size_t size, size_t *actual_size)
    87111{
     112        static uint8_t last_data[2 + KB_MAX_KEYS_AT_ONCE];
     113
    88114        if (size < 2 + KB_MAX_KEYS_AT_ONCE) {
    89115                return EINVAL;
     
    101127        }
    102128       
     129        if (keypress_check_with_last_request(data, last_data,
     130            2 + KB_MAX_KEYS_AT_ONCE)) {
     131                *actual_size = 0;
     132                return EOK;
     133        }
     134
    103135        memcpy(buffer, &data, *actual_size);
    104136       
     
    153185        .ops = &keyboard_ops,
    154186        .descriptors = &descriptors,
     187        .lib_debug_level = 3,
     188        .lib_debug_enabled_tags = USBVIRT_DEBUGTAG_ALL,
    155189        .name = "keyboard"
    156190};
     
    178212        printf("\n");
    179213       
    180         fibril_sleep(1);
     214        fibril_sleep(KEY_PRESS_DELAY);
    181215}
    182216
     
    203237int main(int argc, char * argv[])
    204238{
    205         printf("Dump of report descriptor (%u bytes):\n", report_descriptor_size);
     239        printf("Dump of report descriptor (%zu bytes):\n", report_descriptor_size);
    206240        size_t i;
    207241        for (i = 0; i < report_descriptor_size; i++) {
     
    224258       
    225259        printf("%s: Simulating keyboard events...\n", NAME);
    226         kb_process_events(&status, keyboard_events, keyboard_events_count,
    227             on_keyboard_change);
     260        while (1) {
     261                kb_process_events(&status, keyboard_events, keyboard_events_count,
     262                        on_keyboard_change);
     263        }
    228264       
    229265        printf("%s: Terminating...\n", NAME);
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