Rod Coleman / NetServices

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

drv/usb/usb_mem.c@0:8f5825f330b0, 2011-09-08 (annotated)

Committer:
RodColeman
Date:
Thu Sep 08 10:41:36 2011 +0000
Revision:
0:8f5825f330b0
setDataLen hacked to 180bytes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RodColeman 0:8f5825f330b0 1
RodColeman 0:8f5825f330b0 2 /*
RodColeman 0:8f5825f330b0 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
RodColeman 0:8f5825f330b0 4
RodColeman 0:8f5825f330b0 5 Permission is hereby granted, free of charge, to any person obtaining a copy
RodColeman 0:8f5825f330b0 6 of this software and associated documentation files (the "Software"), to deal
RodColeman 0:8f5825f330b0 7 in the Software without restriction, including without limitation the rights
RodColeman 0:8f5825f330b0 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
RodColeman 0:8f5825f330b0 9 copies of the Software, and to permit persons to whom the Software is
RodColeman 0:8f5825f330b0 10 furnished to do so, subject to the following conditions:
RodColeman 0:8f5825f330b0 11
RodColeman 0:8f5825f330b0 12 The above copyright notice and this permission notice shall be included in
RodColeman 0:8f5825f330b0 13 all copies or substantial portions of the Software.
RodColeman 0:8f5825f330b0 14
RodColeman 0:8f5825f330b0 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
RodColeman 0:8f5825f330b0 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
RodColeman 0:8f5825f330b0 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
RodColeman 0:8f5825f330b0 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
RodColeman 0:8f5825f330b0 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
RodColeman 0:8f5825f330b0 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
RodColeman 0:8f5825f330b0 21 THE SOFTWARE.
RodColeman 0:8f5825f330b0 22 */
RodColeman 0:8f5825f330b0 23
RodColeman 0:8f5825f330b0 24 #include "usb_mem.h"
RodColeman 0:8f5825f330b0 25
RodColeman 0:8f5825f330b0 26 #include "string.h" //For memcpy, memmove, memset
RodColeman 0:8f5825f330b0 27
RodColeman 0:8f5825f330b0 28 #include "netCfg.h"
RodColeman 0:8f5825f330b0 29 #if NET_USB
RodColeman 0:8f5825f330b0 30
RodColeman 0:8f5825f330b0 31 #define EDS_COUNT 4
RodColeman 0:8f5825f330b0 32 #define TDS_COUNT 8
RodColeman 0:8f5825f330b0 33
RodColeman 0:8f5825f330b0 34 #define HCCA_SIZE 0x100
RodColeman 0:8f5825f330b0 35 #define ED_SIZE 0x10
RodColeman 0:8f5825f330b0 36 #define TD_SIZE 0x10
RodColeman 0:8f5825f330b0 37
RodColeman 0:8f5825f330b0 38 #define TOTAL_SIZE (HCCA_SIZE + (EDS_COUNT*ED_SIZE) + (TDS_COUNT*TD_SIZE))
RodColeman 0:8f5825f330b0 39
RodColeman 0:8f5825f330b0 40
RodColeman 0:8f5825f330b0 41 static volatile __align(256) byte usb_buf[TOTAL_SIZE] __attribute((section("AHBSRAM1"),aligned)); //256 bytes aligned!
RodColeman 0:8f5825f330b0 42
RodColeman 0:8f5825f330b0 43 static volatile byte* usb_hcca; //256 bytes aligned!
RodColeman 0:8f5825f330b0 44
RodColeman 0:8f5825f330b0 45 static volatile byte* usb_edBuf; //4 bytes aligned!
RodColeman 0:8f5825f330b0 46 static volatile byte* usb_tdBuf; //4 bytes aligned!
RodColeman 0:8f5825f330b0 47
RodColeman 0:8f5825f330b0 48 static byte usb_edBufAlloc[EDS_COUNT] __attribute((section("AHBSRAM1"),aligned));
RodColeman 0:8f5825f330b0 49 static byte usb_tdBufAlloc[TDS_COUNT] __attribute((section("AHBSRAM1"),aligned));
RodColeman 0:8f5825f330b0 50
RodColeman 0:8f5825f330b0 51 void usb_mem_init()
RodColeman 0:8f5825f330b0 52 {
RodColeman 0:8f5825f330b0 53 usb_hcca = usb_buf;
RodColeman 0:8f5825f330b0 54 usb_edBuf = usb_buf + HCCA_SIZE;
RodColeman 0:8f5825f330b0 55 usb_tdBuf = usb_buf + HCCA_SIZE + (EDS_COUNT*ED_SIZE);
RodColeman 0:8f5825f330b0 56 memset(usb_edBufAlloc, 0, EDS_COUNT);
RodColeman 0:8f5825f330b0 57 memset(usb_tdBufAlloc, 0, TDS_COUNT);
RodColeman 0:8f5825f330b0 58 }
RodColeman 0:8f5825f330b0 59
RodColeman 0:8f5825f330b0 60 volatile byte* usb_get_hcca()
RodColeman 0:8f5825f330b0 61 {
RodColeman 0:8f5825f330b0 62 return usb_hcca;
RodColeman 0:8f5825f330b0 63 }
RodColeman 0:8f5825f330b0 64
RodColeman 0:8f5825f330b0 65 volatile byte* usb_get_ed()
RodColeman 0:8f5825f330b0 66 {
RodColeman 0:8f5825f330b0 67 int i;
RodColeman 0:8f5825f330b0 68 for(i = 0; i < EDS_COUNT; i++)
RodColeman 0:8f5825f330b0 69 {
RodColeman 0:8f5825f330b0 70 if( !usb_edBufAlloc[i] )
RodColeman 0:8f5825f330b0 71 {
RodColeman 0:8f5825f330b0 72 usb_edBufAlloc[i] = 1;
RodColeman 0:8f5825f330b0 73 return usb_edBuf + i*ED_SIZE;
RodColeman 0:8f5825f330b0 74 }
RodColeman 0:8f5825f330b0 75 }
RodColeman 0:8f5825f330b0 76 return NULL; //Could not alloc ED
RodColeman 0:8f5825f330b0 77 }
RodColeman 0:8f5825f330b0 78
RodColeman 0:8f5825f330b0 79 volatile byte* usb_get_td()
RodColeman 0:8f5825f330b0 80 {
RodColeman 0:8f5825f330b0 81 int i;
RodColeman 0:8f5825f330b0 82 for(i = 0; i < TDS_COUNT; i++)
RodColeman 0:8f5825f330b0 83 {
RodColeman 0:8f5825f330b0 84 if( !usb_tdBufAlloc[i] )
RodColeman 0:8f5825f330b0 85 {
RodColeman 0:8f5825f330b0 86 usb_tdBufAlloc[i] = 1;
RodColeman 0:8f5825f330b0 87 return usb_tdBuf + i*TD_SIZE;
RodColeman 0:8f5825f330b0 88 }
RodColeman 0:8f5825f330b0 89 }
RodColeman 0:8f5825f330b0 90 return NULL; //Could not alloc TD
RodColeman 0:8f5825f330b0 91 }
RodColeman 0:8f5825f330b0 92
RodColeman 0:8f5825f330b0 93 void usb_free_ed(volatile byte* ed)
RodColeman 0:8f5825f330b0 94 {
RodColeman 0:8f5825f330b0 95 int i;
RodColeman 0:8f5825f330b0 96 i = (ed - usb_edBuf) / ED_SIZE;
RodColeman 0:8f5825f330b0 97 usb_edBufAlloc[i] = 0;
RodColeman 0:8f5825f330b0 98 }
RodColeman 0:8f5825f330b0 99
RodColeman 0:8f5825f330b0 100 void usb_free_td(volatile byte* td)
RodColeman 0:8f5825f330b0 101 {
RodColeman 0:8f5825f330b0 102 int i;
RodColeman 0:8f5825f330b0 103 i = (td - usb_tdBuf) / TD_SIZE;
RodColeman 0:8f5825f330b0 104 usb_tdBufAlloc[i] = 0;
RodColeman 0:8f5825f330b0 105 }
RodColeman 0:8f5825f330b0 106
RodColeman 0:8f5825f330b0 107
RodColeman 0:8f5825f330b0 108 #endif