1 files changed, 82 insertions, 0 deletions
diff --git a/lib/usbhost/USB_Host_Shield_2.0/macros.h b/lib/usbhost/USB_Host_Shield_2.0/macros.h
new file mode 100644
index 0000000000..e14a711fab
--- /dev/null
+++ b/lib/usbhost/USB_Host_Shield_2.0/macros.h
@@ -0,0 +1,82 @@
+/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
+
+This software may be distributed and modified under the terms of the GNU
+General Public License version 2 (GPL2) as published by the Free Software
+Foundation and appearing in the file GPL2.TXT included in the packaging of
+this file. Please note that GPL2 Section 2[b] requires that all works based
+on this software must also be made publicly available under the terms of
+the GPL2 ("Copyleft").
+
+Contact information
+-------------------
+
+Circuits At Home, LTD
+Web      :  http://www.circuitsathome.com
+e-mail   :  support@circuitsathome.com
+ */
+
+#if !defined(_usb_h_) || defined(MACROS_H)
+#error "Never include macros.h directly; include Usb.h instead"
+#else
+#define MACROS_H
+
+////////////////////////////////////////////////////////////////////////////////
+// HANDY MACROS
+////////////////////////////////////////////////////////////////////////////////
+
+#define VALUE_BETWEEN(v,l,h) (((v)>(l)) && ((v)<(h)))
+#define VALUE_WITHIN(v,l,h) (((v)>=(l)) && ((v)<=(h)))
+#define output_pgm_message(wa,fp,mp,el) wa = &mp, fp((char *)pgm_read_pointer(wa), el)
+#define output_if_between(v,l,h,wa,fp,mp,el) if(VALUE_BETWEEN(v,l,h)) output_pgm_message(wa,fp,mp[v-(l+1)],el);
+
+#define SWAP(a, b) (((a) ^= (b)), ((b) ^= (a)), ((a) ^= (b)))
+#ifndef __BYTE_GRABBING_DEFINED__
+#define __BYTE_GRABBING_DEFINED__ 1
+#ifdef BROKEN_OPTIMIZER_LITTLE_ENDIAN
+// Note: Use this if your compiler generates horrible assembler!
+#define BGRAB0(__usi__)  (((uint8_t *)&(__usi__))[0])
+#define BGRAB1(__usi__)  (((uint8_t *)&(__usi__))[1])
+#define BGRAB2(__usi__)  (((uint8_t *)&(__usi__))[2])
+#define BGRAB3(__usi__)  (((uint8_t *)&(__usi__))[3])
+#define BGRAB4(__usi__)  (((uint8_t *)&(__usi__))[4])
+#define BGRAB5(__usi__)  (((uint8_t *)&(__usi__))[5])
+#define BGRAB6(__usi__)  (((uint8_t *)&(__usi__))[6])
+#define BGRAB7(__usi__)  (((uint8_t *)&(__usi__))[7])
+#else
+// Note: The cast alone to uint8_t is actually enough.
+// GCC throws out the "& 0xff", and the size is no different.
+// Some compilers need it.
+#define BGRAB0(__usi__)  ((uint8_t)((__usi__) & 0xff ))
+#define BGRAB1(__usi__)  ((uint8_t)(((__usi__) >> 8) & 0xff))
+#define BGRAB2(__usi__)  ((uint8_t)(((__usi__) >> 16) & 0xff))
+#define BGRAB3(__usi__)  ((uint8_t)(((__usi__) >> 24) & 0xff))
+#define BGRAB4(__usi__)  ((uint8_t)(((__usi__) >> 32) & 0xff))
+#define BGRAB5(__usi__)  ((uint8_t)(((__usi__) >> 40) & 0xff))
+#define BGRAB6(__usi__)  ((uint8_t)(((__usi__) >> 48) & 0xff))
+#define BGRAB7(__usi__)  ((uint8_t)(((__usi__) >> 56) & 0xff))
+#endif
+#define BOVER1(__usi__)  ((uint16_t)(__usi__) << 8)
+#define BOVER2(__usi__)  ((uint32_t)(__usi__) << 16)
+#define BOVER3(__usi__)  ((uint32_t)(__usi__) << 24)
+#define BOVER4(__usi__)  ((uint64_t)(__usi__) << 32)
+#define BOVER5(__usi__)  ((uint64_t)(__usi__) << 40)
+#define BOVER6(__usi__)  ((uint64_t)(__usi__) << 48)
+#define BOVER7(__usi__)  ((uint64_t)(__usi__) << 56)
+
+// These are the smallest and fastest ways I have found so far in pure C/C++.
+#define BMAKE16(__usc1__,__usc0__) ((uint16_t)((uint16_t)(__usc0__) | (uint16_t)BOVER1(__usc1__)))
+#define BMAKE32(__usc3__,__usc2__,__usc1__,__usc0__) ((uint32_t)((uint32_t)(__usc0__) | (uint32_t)BOVER1(__usc1__) | (uint32_t)BOVER2(__usc2__) | (uint32_t)BOVER3(__usc3__)))
+#define BMAKE64(__usc7__,__usc6__,__usc5__,__usc4__,__usc3__,__usc2__,__usc1__,__usc0__) ((uint64_t)((uint64_t)__usc0__ | (uint64_t)BOVER1(__usc1__) | (uint64_t)BOVER2(__usc2__) | (uint64_t)BOVER3(__usc3__) | (uint64_t)BOVER4(__usc4__) | (uint64_t)BOVER5(__usc5__) | (uint64_t)BOVER6(__usc6__) | (uint64_t)BOVER1(__usc7__)))
+#endif
+
+/*
+ * Debug macros: Strings are stored in progmem (flash) instead of RAM.
+ */
+#define USBTRACE(s) (Notify(PSTR(s), 0x80))
+#define USBTRACE1(s,l) (Notify(PSTR(s), l))
+#define USBTRACE2(s,r) (Notify(PSTR(s), 0x80), D_PrintHex((r), 0x80), Notify(PSTR("\r\n"), 0x80))
+#define USBTRACE3(s,r,l) (Notify(PSTR(s), l), D_PrintHex((r), l), Notify(PSTR("\r\n"), l))
+
+
+#endif /* MACROS_H */
+