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authortmk <nobody@nowhere>2011-02-09 00:03:58 +0900
committertmk <nobody@nowhere>2011-02-22 03:08:59 +0900
commitacc974c64b1e17e6807133fdc50de5bb34aedda5 (patch)
tree7af7511a56d680a4d93b535c52891a8ffc15dd04 /pjrc/usb_extra.c
parent5552b5afeaa9ce7432f9ded3586984253f292d80 (diff)
added protocol stack: pjrc, vusb
Diffstat (limited to 'pjrc/usb_extra.c')
-rw-r--r--pjrc/usb_extra.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/pjrc/usb_extra.c b/pjrc/usb_extra.c
new file mode 100644
index 0000000000..9bc0c3f5f3
--- /dev/null
+++ b/pjrc/usb_extra.c
@@ -0,0 +1,44 @@
+#include <avr/interrupt.h>
+#include "usb_extra.h"
+
+
+int8_t usb_extra_send(uint8_t report_id, uint8_t bits)
+{
+ 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 = bits;
+
+ UEINTX = 0x3A;
+ SREG = intr_state;
+ return 0;
+}
+
+int8_t usb_extra_audio_send(uint8_t bits)
+{
+ return usb_extra_send(1, bits);
+}
+
+int8_t usb_extra_system_send(uint8_t bits)
+{
+ return usb_extra_send(2, bits);
+}