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