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-rw-r--r--tmk_core/protocol/vusb/vusb.c27
1 files changed, 16 insertions, 11 deletions
diff --git a/tmk_core/protocol/vusb/vusb.c b/tmk_core/protocol/vusb/vusb.c
index 35c0620d6..60e48c3a9 100644
--- a/tmk_core/protocol/vusb/vusb.c
+++ b/tmk_core/protocol/vusb/vusb.c
@@ -27,6 +27,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "host_driver.h"
#include "vusb.h"
#include "bootloader.h"
+#include <util/delay.h>
static uint8_t vusb_keyboard_leds = 0;
@@ -46,22 +47,26 @@ typedef struct {
static keyboard_report_t keyboard_report; // sent to PC
+#define VUSB_TRANSFER_KEYBOARD_MAX_TRIES 10
+
/* transfer keyboard report from buffer */
void vusb_transfer_keyboard(void)
{
- if (usbInterruptIsReady()) {
- if (kbuf_head != kbuf_tail) {
- usbSetInterrupt((void *)&kbuf[kbuf_tail], sizeof(report_keyboard_t));
- kbuf_tail = (kbuf_tail + 1) % KBUF_SIZE;
- if (debug_keyboard) {
- print("V-USB: kbuf["); pdec(kbuf_tail); print("->"); pdec(kbuf_head); print("](");
- phex((kbuf_head < kbuf_tail) ? (KBUF_SIZE - kbuf_tail + kbuf_head) : (kbuf_head - kbuf_tail));
- print(")\n");
+ for (int i = 0; i < VUSB_TRANSFER_KEYBOARD_MAX_TRIES; i++) {
+ if (usbInterruptIsReady()) {
+ if (kbuf_head != kbuf_tail) {
+ usbSetInterrupt((void *)&kbuf[kbuf_tail], sizeof(report_keyboard_t));
+ kbuf_tail = (kbuf_tail + 1) % KBUF_SIZE;
+ if (debug_keyboard) {
+ print("V-USB: kbuf["); pdec(kbuf_tail); print("->"); pdec(kbuf_head); print("](");
+ phex((kbuf_head < kbuf_tail) ? (KBUF_SIZE - kbuf_tail + kbuf_head) : (kbuf_head - kbuf_tail));
+ print(")\n");
+ }
}
+ break;
}
- } else {
- usbPoll();
- vusb_transfer_keyboard();
+ usbPoll();
+ _delay_ms(1);
}
}