Rahol Rajan / NetServices-Traffic

Used in Live Traffic Update Nokia LCD Display Project

Fork of NetServices by Segundo Equipo

drv/usb/usb_mem.c@8:92b57208ab99, 2013-03-06 (annotated)

Committer:
rrajan8
Date:
Wed Mar 06 19:07:23 2013 +0000
Revision:
8:92b57208ab99
Parent:
0:ac1725ba162c 
This project utilizes mbed's networking features to display live traffic updates on the Nokia LCD using the MapQuest API's Traffic Web Service.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
segundo 0:ac1725ba162c 1
segundo 0:ac1725ba162c 2 /*
segundo 0:ac1725ba162c 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
segundo 0:ac1725ba162c 4
segundo 0:ac1725ba162c 5 Permission is hereby granted, free of charge, to any person obtaining a copy
segundo 0:ac1725ba162c 6 of this software and associated documentation files (the "Software"), to deal
segundo 0:ac1725ba162c 7 in the Software without restriction, including without limitation the rights
segundo 0:ac1725ba162c 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
segundo 0:ac1725ba162c 9 copies of the Software, and to permit persons to whom the Software is
segundo 0:ac1725ba162c 10 furnished to do so, subject to the following conditions:
segundo 0:ac1725ba162c 11
segundo 0:ac1725ba162c 12 The above copyright notice and this permission notice shall be included in
segundo 0:ac1725ba162c 13 all copies or substantial portions of the Software.
segundo 0:ac1725ba162c 14
segundo 0:ac1725ba162c 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
segundo 0:ac1725ba162c 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
segundo 0:ac1725ba162c 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
segundo 0:ac1725ba162c 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
segundo 0:ac1725ba162c 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
segundo 0:ac1725ba162c 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
segundo 0:ac1725ba162c 21 THE SOFTWARE.
segundo 0:ac1725ba162c 22 */
segundo 0:ac1725ba162c 23
segundo 0:ac1725ba162c 24 #include "usb_mem.h"
segundo 0:ac1725ba162c 25
segundo 0:ac1725ba162c 26 #include "string.h" //For memcpy, memmove, memset
segundo 0:ac1725ba162c 27
segundo 0:ac1725ba162c 28 #include "netCfg.h"
segundo 0:ac1725ba162c 29 #if NET_USB
segundo 0:ac1725ba162c 30
segundo 0:ac1725ba162c 31 #define EDS_COUNT 4
segundo 0:ac1725ba162c 32 #define TDS_COUNT 8
segundo 0:ac1725ba162c 33
segundo 0:ac1725ba162c 34 #define HCCA_SIZE 0x100
segundo 0:ac1725ba162c 35 #define ED_SIZE 0x10
segundo 0:ac1725ba162c 36 #define TD_SIZE 0x10
segundo 0:ac1725ba162c 37
segundo 0:ac1725ba162c 38 #define TOTAL_SIZE (HCCA_SIZE + (EDS_COUNT*ED_SIZE) + (TDS_COUNT*TD_SIZE))
segundo 0:ac1725ba162c 39
segundo 0:ac1725ba162c 40
segundo 0:ac1725ba162c 41 static volatile __align(256) byte usb_buf[TOTAL_SIZE] __attribute((section("AHBSRAM1"),aligned)); //256 bytes aligned!
segundo 0:ac1725ba162c 42
segundo 0:ac1725ba162c 43 static volatile byte* usb_hcca; //256 bytes aligned!
segundo 0:ac1725ba162c 44
segundo 0:ac1725ba162c 45 static volatile byte* usb_edBuf; //4 bytes aligned!
segundo 0:ac1725ba162c 46 static volatile byte* usb_tdBuf; //4 bytes aligned!
segundo 0:ac1725ba162c 47
segundo 0:ac1725ba162c 48 static byte usb_edBufAlloc[EDS_COUNT] __attribute((section("AHBSRAM1"),aligned));
segundo 0:ac1725ba162c 49 static byte usb_tdBufAlloc[TDS_COUNT] __attribute((section("AHBSRAM1"),aligned));
segundo 0:ac1725ba162c 50
segundo 0:ac1725ba162c 51 void usb_mem_init()
segundo 0:ac1725ba162c 52 {
segundo 0:ac1725ba162c 53 usb_hcca = usb_buf;
segundo 0:ac1725ba162c 54 usb_edBuf = usb_buf + HCCA_SIZE;
segundo 0:ac1725ba162c 55 usb_tdBuf = usb_buf + HCCA_SIZE + (EDS_COUNT*ED_SIZE);
segundo 0:ac1725ba162c 56 memset(usb_edBufAlloc, 0, EDS_COUNT);
segundo 0:ac1725ba162c 57 memset(usb_tdBufAlloc, 0, TDS_COUNT);
segundo 0:ac1725ba162c 58 }
segundo 0:ac1725ba162c 59
segundo 0:ac1725ba162c 60 volatile byte* usb_get_hcca()
segundo 0:ac1725ba162c 61 {
segundo 0:ac1725ba162c 62 return usb_hcca;
segundo 0:ac1725ba162c 63 }
segundo 0:ac1725ba162c 64
segundo 0:ac1725ba162c 65 volatile byte* usb_get_ed()
segundo 0:ac1725ba162c 66 {
segundo 0:ac1725ba162c 67 int i;
segundo 0:ac1725ba162c 68 for(i = 0; i < EDS_COUNT; i++)
segundo 0:ac1725ba162c 69 {
segundo 0:ac1725ba162c 70 if( !usb_edBufAlloc[i] )
segundo 0:ac1725ba162c 71 {
segundo 0:ac1725ba162c 72 usb_edBufAlloc[i] = 1;
segundo 0:ac1725ba162c 73 return usb_edBuf + i*ED_SIZE;
segundo 0:ac1725ba162c 74 }
segundo 0:ac1725ba162c 75 }
segundo 0:ac1725ba162c 76 return NULL; //Could not alloc ED
segundo 0:ac1725ba162c 77 }
segundo 0:ac1725ba162c 78
segundo 0:ac1725ba162c 79 volatile byte* usb_get_td()
segundo 0:ac1725ba162c 80 {
segundo 0:ac1725ba162c 81 int i;
segundo 0:ac1725ba162c 82 for(i = 0; i < TDS_COUNT; i++)
segundo 0:ac1725ba162c 83 {
segundo 0:ac1725ba162c 84 if( !usb_tdBufAlloc[i] )
segundo 0:ac1725ba162c 85 {
segundo 0:ac1725ba162c 86 usb_tdBufAlloc[i] = 1;
segundo 0:ac1725ba162c 87 return usb_tdBuf + i*TD_SIZE;
segundo 0:ac1725ba162c 88 }
segundo 0:ac1725ba162c 89 }
segundo 0:ac1725ba162c 90 return NULL; //Could not alloc TD
segundo 0:ac1725ba162c 91 }
segundo 0:ac1725ba162c 92
segundo 0:ac1725ba162c 93 void usb_free_ed(volatile byte* ed)
segundo 0:ac1725ba162c 94 {
segundo 0:ac1725ba162c 95 int i;
segundo 0:ac1725ba162c 96 i = (ed - usb_edBuf) / ED_SIZE;
segundo 0:ac1725ba162c 97 usb_edBufAlloc[i] = 0;
segundo 0:ac1725ba162c 98 }
segundo 0:ac1725ba162c 99
segundo 0:ac1725ba162c 100 void usb_free_td(volatile byte* td)
segundo 0:ac1725ba162c 101 {
segundo 0:ac1725ba162c 102 int i;
segundo 0:ac1725ba162c 103 i = (td - usb_tdBuf) / TD_SIZE;
segundo 0:ac1725ba162c 104 usb_tdBufAlloc[i] = 0;
segundo 0:ac1725ba162c 105 }
segundo 0:ac1725ba162c 106
segundo 0:ac1725ba162c 107
segundo 0:ac1725ba162c 108 #endif