Function teensy_write

LoadFile/teensy_loader_cli.c:276–298

}

int teensy_write( void *buf, int len, double timeout )
{
	int r;

	if ( !libusb_teensy_handle )
		return 0;

	while ( timeout > 0 ) {
		r = libusb_control_transfer( libusb_teensy_handle,
			0x21, 9, 0x0200, 0,
			(unsigned char *)buf, len,
			(int)(timeout * 1000.0) );

		if ( r >= 0 )
			return 1;

		//printf("teensy_write, r=%d\n", r);
		usleep( 10000 );
		timeout -= 0.01;  // TODO: subtract actual elapsed time
	}

	return 0;
}

void teensy_close()
{