// send - send a packet
// Inputs:
// num = device to transmit to (zero based)
// buf = buffer containing packet to send
// len = number of bytes to transmit
// timeout = time to wait, in milliseconds
// Output:
// number of bytes sent, or -1 on error
//
int pjrc_rawhid::send(int num, void *buf, int len, int timeout)
{
hid_t *hid;
int result=-100;
hid = get_hid(num);
if (!hid || !hid->open) return -1;
#if 1
#warning "Send timeout not implemented on MACOSX"
uint8_t *report_buf = (uint8_t *) malloc(len);
memcpy(&report_buf[0], buf,len);
// Note: packet processing done in OS indepdent code
IOReturn ret = IOHIDDeviceSetReport(hid->ref, kIOHIDReportTypeOutput, 2, (uint8_t *)report_buf, len);
result = (ret == kIOReturnSuccess) ? len : -1;
if (err_get_system(ret) == err_get_system(sys_iokit))
{
// The error was in the I/O Kit system
UInt32 codeValue = err_get_code(ret);
qDebug("Returned: %x", codeValue);
// Can now perform test on error code, display it to user, or whatever.
usleep(1000000);
}
#endif
#if 0
// No matter what I tried this never actually sends an output
// report and output_callback never gets called. Why??
// Did I miss something? This is exactly the same params as
// the sync call that works. Is it an Apple bug?
// (submitted to Apple on 22-sep-2009, problem ID 7245050)
//
IOHIDDeviceScheduleWithRunLoop(hid->ref, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
// should already be scheduled with run loop by attach_callback,
// sadly this doesn't make any difference either way
//
IOHIDDeviceSetReportWithCallback(hid->ref, kIOHIDReportTypeOutput,
0, buf, len, (double)timeout / 1000.0, output_callback, &result);
while (1) {
printf("enter run loop (send)\n");
CFRunLoopRun();
printf("leave run loop (send)\n");
if (result > -100) break;
if (!hid->open) {
result = -1;
break;
}
}
#endif
return result;
}
// rawhid_send - send a packet
// Inputs:
// num = device to transmit to (zero based)
// buf = buffer containing packet to send
// len = number of bytes to transmit
// timeout = time to wait, in milliseconds
// Output:
// number of bytes sent, or -1 on error
//
int rawhid_send(int num, void *buf, int len, int timeout)
{
//fprintf(stderr,"rawhid_send num: %d\n",num);
hid_t *hid;
int result=-100;
hid = get_hid(num);
if (!hid || !hid->open) return -1;
//fprintf(stderr,"rawhid_send A\n");
#if 1
#warning "Send timeout not implemented on MACOSX"
IOReturn ret = IOHIDDeviceSetReport(hid->ref, kIOHIDReportTypeOutput, 0, buf, len);
result = (ret == kIOReturnSuccess) ? len : -1;
//fprintf(stderr,"rawhid_send B result: %d\n",result);
#endif
#if 0
// No matter what I tried this never actually sends an output
// report and output_callback never gets called. Why??
// Did I miss something? This is exactly the same params as
// the sync call that works. Is it an Apple bug?
// (submitted to Apple on 22-sep-2009, problem ID 7245050)
//
fprintf(stderr,"rawhid_send C\n");
IOHIDDeviceScheduleWithRunLoop(hid->ref, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
// should already be scheduled with run loop by attach_callback,
// sadly this doesn't make any difference either way
//
IOHIDDeviceSetReportWithCallback(hid->ref, kIOHIDReportTypeOutput,
0, buf, len, (double)timeout / 1000.0, output_callback, &result);
//fprintf(stderr,"rawhid_send D\n");
while (1)
{
fprintf(stderr,"enter run loop (send)\n");
CFRunLoopRun();
fprintf(stderr,"leave run loop (send)\n");
if (result > -100) break;
if (!hid->open)
{
result = -1;
break;
}
}
#endif
fprintf(stderr,"rawhid_send result: %d\n",result);
return result;
}