Rod Coleman / NetServSB2

Netservices modded to read fragmented HTTP respsonse/payload from special purpose server - 180 bytes only

drv/usb/usb_mem.c@0:850eacf3e945, 2011-09-08 (annotated)

Committer:
RodColeman
Date:
Thu Sep 08 10:48:09 2011 +0000
Revision:
0:850eacf3e945
revised fixed length to 178 bytes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RodColeman 0:850eacf3e945 1
RodColeman 0:850eacf3e945 2 /*
RodColeman 0:850eacf3e945 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
RodColeman 0:850eacf3e945 4
RodColeman 0:850eacf3e945 5 Permission is hereby granted, free of charge, to any person obtaining a copy
RodColeman 0:850eacf3e945 6 of this software and associated documentation files (the "Software"), to deal
RodColeman 0:850eacf3e945 7 in the Software without restriction, including without limitation the rights
RodColeman 0:850eacf3e945 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
RodColeman 0:850eacf3e945 9 copies of the Software, and to permit persons to whom the Software is
RodColeman 0:850eacf3e945 10 furnished to do so, subject to the following conditions:
RodColeman 0:850eacf3e945 11
RodColeman 0:850eacf3e945 12 The above copyright notice and this permission notice shall be included in
RodColeman 0:850eacf3e945 13 all copies or substantial portions of the Software.
RodColeman 0:850eacf3e945 14
RodColeman 0:850eacf3e945 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
RodColeman 0:850eacf3e945 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
RodColeman 0:850eacf3e945 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
RodColeman 0:850eacf3e945 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
RodColeman 0:850eacf3e945 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
RodColeman 0:850eacf3e945 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
RodColeman 0:850eacf3e945 21 THE SOFTWARE.
RodColeman 0:850eacf3e945 22 */
RodColeman 0:850eacf3e945 23
RodColeman 0:850eacf3e945 24 #include "usb_mem.h"
RodColeman 0:850eacf3e945 25
RodColeman 0:850eacf3e945 26 #include "string.h" //For memcpy, memmove, memset
RodColeman 0:850eacf3e945 27
RodColeman 0:850eacf3e945 28 #include "netCfg.h"
RodColeman 0:850eacf3e945 29 #if NET_USB
RodColeman 0:850eacf3e945 30
RodColeman 0:850eacf3e945 31 #define EDS_COUNT 4
RodColeman 0:850eacf3e945 32 #define TDS_COUNT 8
RodColeman 0:850eacf3e945 33
RodColeman 0:850eacf3e945 34 #define HCCA_SIZE 0x100
RodColeman 0:850eacf3e945 35 #define ED_SIZE 0x10
RodColeman 0:850eacf3e945 36 #define TD_SIZE 0x10
RodColeman 0:850eacf3e945 37
RodColeman 0:850eacf3e945 38 #define TOTAL_SIZE (HCCA_SIZE + (EDS_COUNT*ED_SIZE) + (TDS_COUNT*TD_SIZE))
RodColeman 0:850eacf3e945 39
RodColeman 0:850eacf3e945 40
RodColeman 0:850eacf3e945 41 static volatile __align(256) byte usb_buf[TOTAL_SIZE] __attribute((section("AHBSRAM1"),aligned)); //256 bytes aligned!
RodColeman 0:850eacf3e945 42
RodColeman 0:850eacf3e945 43 static volatile byte* usb_hcca; //256 bytes aligned!
RodColeman 0:850eacf3e945 44
RodColeman 0:850eacf3e945 45 static volatile byte* usb_edBuf; //4 bytes aligned!
RodColeman 0:850eacf3e945 46 static volatile byte* usb_tdBuf; //4 bytes aligned!
RodColeman 0:850eacf3e945 47
RodColeman 0:850eacf3e945 48 static byte usb_edBufAlloc[EDS_COUNT] __attribute((section("AHBSRAM1"),aligned));
RodColeman 0:850eacf3e945 49 static byte usb_tdBufAlloc[TDS_COUNT] __attribute((section("AHBSRAM1"),aligned));
RodColeman 0:850eacf3e945 50
RodColeman 0:850eacf3e945 51 void usb_mem_init()
RodColeman 0:850eacf3e945 52 {
RodColeman 0:850eacf3e945 53 usb_hcca = usb_buf;
RodColeman 0:850eacf3e945 54 usb_edBuf = usb_buf + HCCA_SIZE;
RodColeman 0:850eacf3e945 55 usb_tdBuf = usb_buf + HCCA_SIZE + (EDS_COUNT*ED_SIZE);
RodColeman 0:850eacf3e945 56 memset(usb_edBufAlloc, 0, EDS_COUNT);
RodColeman 0:850eacf3e945 57 memset(usb_tdBufAlloc, 0, TDS_COUNT);
RodColeman 0:850eacf3e945 58 }
RodColeman 0:850eacf3e945 59
RodColeman 0:850eacf3e945 60 volatile byte* usb_get_hcca()
RodColeman 0:850eacf3e945 61 {
RodColeman 0:850eacf3e945 62 return usb_hcca;
RodColeman 0:850eacf3e945 63 }
RodColeman 0:850eacf3e945 64
RodColeman 0:850eacf3e945 65 volatile byte* usb_get_ed()
RodColeman 0:850eacf3e945 66 {
RodColeman 0:850eacf3e945 67 int i;
RodColeman 0:850eacf3e945 68 for(i = 0; i < EDS_COUNT; i++)
RodColeman 0:850eacf3e945 69 {
RodColeman 0:850eacf3e945 70 if( !usb_edBufAlloc[i] )
RodColeman 0:850eacf3e945 71 {
RodColeman 0:850eacf3e945 72 usb_edBufAlloc[i] = 1;
RodColeman 0:850eacf3e945 73 return usb_edBuf + i*ED_SIZE;
RodColeman 0:850eacf3e945 74 }
RodColeman 0:850eacf3e945 75 }
RodColeman 0:850eacf3e945 76 return NULL; //Could not alloc ED
RodColeman 0:850eacf3e945 77 }
RodColeman 0:850eacf3e945 78
RodColeman 0:850eacf3e945 79 volatile byte* usb_get_td()
RodColeman 0:850eacf3e945 80 {
RodColeman 0:850eacf3e945 81 int i;
RodColeman 0:850eacf3e945 82 for(i = 0; i < TDS_COUNT; i++)
RodColeman 0:850eacf3e945 83 {
RodColeman 0:850eacf3e945 84 if( !usb_tdBufAlloc[i] )
RodColeman 0:850eacf3e945 85 {
RodColeman 0:850eacf3e945 86 usb_tdBufAlloc[i] = 1;
RodColeman 0:850eacf3e945 87 return usb_tdBuf + i*TD_SIZE;
RodColeman 0:850eacf3e945 88 }
RodColeman 0:850eacf3e945 89 }
RodColeman 0:850eacf3e945 90 return NULL; //Could not alloc TD
RodColeman 0:850eacf3e945 91 }
RodColeman 0:850eacf3e945 92
RodColeman 0:850eacf3e945 93 void usb_free_ed(volatile byte* ed)
RodColeman 0:850eacf3e945 94 {
RodColeman 0:850eacf3e945 95 int i;
RodColeman 0:850eacf3e945 96 i = (ed - usb_edBuf) / ED_SIZE;
RodColeman 0:850eacf3e945 97 usb_edBufAlloc[i] = 0;
RodColeman 0:850eacf3e945 98 }
RodColeman 0:850eacf3e945 99
RodColeman 0:850eacf3e945 100 void usb_free_td(volatile byte* td)
RodColeman 0:850eacf3e945 101 {
RodColeman 0:850eacf3e945 102 int i;
RodColeman 0:850eacf3e945 103 i = (td - usb_tdBuf) / TD_SIZE;
RodColeman 0:850eacf3e945 104 usb_tdBufAlloc[i] = 0;
RodColeman 0:850eacf3e945 105 }
RodColeman 0:850eacf3e945 106
RodColeman 0:850eacf3e945 107
RodColeman 0:850eacf3e945 108 #endif