qmk_firmware/pjrc/usb_extra.c
tmk 6d45e05ede Added PS/2 multimeda key support.
HID Consumer page and System control are also supported now.
merged mediakey branch: d53a356cd2011b461843a5c7c1527a61692893c1
2011-05-31 21:25:16 +09:00

47 lines
955 B
C

#include <util/delay.h>
#include <avr/interrupt.h>
#include "host.h"
#include "usb_extra.h"
int8_t usb_extra_send(uint8_t report_id, uint16_t data)
{
uint8_t intr_state, timeout;
if (!usb_configured()) return -1;
intr_state = SREG;
cli();
UENUM = EXTRA_ENDPOINT;
timeout = UDFNUML + 50;
while (1) {
// are we ready to transmit?
if (UEINTX & (1<<RWAL)) break;
SREG = intr_state;
// has the USB gone offline?
if (!usb_configured()) return -1;
// have we waited too long?
if (UDFNUML == timeout) return -1;
// get ready to try checking again
intr_state = SREG;
cli();
UENUM = EXTRA_ENDPOINT;
}
UEDATX = report_id;
UEDATX = data&0xFF;
UEDATX = (data>>8)&0xFF;
UEINTX = 0x3A;
SREG = intr_state;
return 0;
}
int8_t usb_extra_consumer_send(uint16_t bits)
{
return usb_extra_send(REPORT_ID_CONSUMER, bits);
}
int8_t usb_extra_system_send(uint16_t bits)
{
return usb_extra_send(REPORT_ID_SYSTEM, bits);
}