Lorcan Smith / Mbed 2 deprecated Enet_SPI

SNMP agent attached to SPI slave

Dependencies:   mbed

drv/usb/usb_mem.c@0:2a53a4c3238c, 2012-08-13 (annotated)

Committer:
lorcansmith
Date:
Mon Aug 13 15:07:40 2012 +0000
Revision:
0:2a53a4c3238c
v1.1 release includes ioAlarm traps

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lorcansmith 0:2a53a4c3238c 1
lorcansmith 0:2a53a4c3238c 2 /*
lorcansmith 0:2a53a4c3238c 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
lorcansmith 0:2a53a4c3238c 4
lorcansmith 0:2a53a4c3238c 5 Permission is hereby granted, free of charge, to any person obtaining a copy
lorcansmith 0:2a53a4c3238c 6 of this software and associated documentation files (the "Software"), to deal
lorcansmith 0:2a53a4c3238c 7 in the Software without restriction, including without limitation the rights
lorcansmith 0:2a53a4c3238c 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
lorcansmith 0:2a53a4c3238c 9 copies of the Software, and to permit persons to whom the Software is
lorcansmith 0:2a53a4c3238c 10 furnished to do so, subject to the following conditions:
lorcansmith 0:2a53a4c3238c 11
lorcansmith 0:2a53a4c3238c 12 The above copyright notice and this permission notice shall be included in
lorcansmith 0:2a53a4c3238c 13 all copies or substantial portions of the Software.
lorcansmith 0:2a53a4c3238c 14
lorcansmith 0:2a53a4c3238c 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
lorcansmith 0:2a53a4c3238c 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
lorcansmith 0:2a53a4c3238c 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
lorcansmith 0:2a53a4c3238c 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
lorcansmith 0:2a53a4c3238c 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
lorcansmith 0:2a53a4c3238c 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
lorcansmith 0:2a53a4c3238c 21 THE SOFTWARE.
lorcansmith 0:2a53a4c3238c 22 */
lorcansmith 0:2a53a4c3238c 23
lorcansmith 0:2a53a4c3238c 24 #include "usb_mem.h"
lorcansmith 0:2a53a4c3238c 25
lorcansmith 0:2a53a4c3238c 26 #include "string.h" //For memcpy, memmove, memset
lorcansmith 0:2a53a4c3238c 27
lorcansmith 0:2a53a4c3238c 28 #include "netCfg.h"
lorcansmith 0:2a53a4c3238c 29 #if NET_USB
lorcansmith 0:2a53a4c3238c 30
lorcansmith 0:2a53a4c3238c 31 #define EDS_COUNT 4
lorcansmith 0:2a53a4c3238c 32 #define TDS_COUNT 8
lorcansmith 0:2a53a4c3238c 33
lorcansmith 0:2a53a4c3238c 34 #define HCCA_SIZE 0x100
lorcansmith 0:2a53a4c3238c 35 #define ED_SIZE 0x10
lorcansmith 0:2a53a4c3238c 36 #define TD_SIZE 0x10
lorcansmith 0:2a53a4c3238c 37
lorcansmith 0:2a53a4c3238c 38 #define TOTAL_SIZE (HCCA_SIZE + (EDS_COUNT*ED_SIZE) + (TDS_COUNT*TD_SIZE))
lorcansmith 0:2a53a4c3238c 39
lorcansmith 0:2a53a4c3238c 40
lorcansmith 0:2a53a4c3238c 41 static volatile __align(256) byte usb_buf[TOTAL_SIZE] __attribute((section("AHBSRAM1"),aligned)); //256 bytes aligned!
lorcansmith 0:2a53a4c3238c 42
lorcansmith 0:2a53a4c3238c 43 static volatile byte* usb_hcca; //256 bytes aligned!
lorcansmith 0:2a53a4c3238c 44
lorcansmith 0:2a53a4c3238c 45 static volatile byte* usb_edBuf; //4 bytes aligned!
lorcansmith 0:2a53a4c3238c 46 static volatile byte* usb_tdBuf; //4 bytes aligned!
lorcansmith 0:2a53a4c3238c 47
lorcansmith 0:2a53a4c3238c 48 static byte usb_edBufAlloc[EDS_COUNT] __attribute((section("AHBSRAM1"),aligned));
lorcansmith 0:2a53a4c3238c 49 static byte usb_tdBufAlloc[TDS_COUNT] __attribute((section("AHBSRAM1"),aligned));
lorcansmith 0:2a53a4c3238c 50
lorcansmith 0:2a53a4c3238c 51 void usb_mem_init()
lorcansmith 0:2a53a4c3238c 52 {
lorcansmith 0:2a53a4c3238c 53 usb_hcca = usb_buf;
lorcansmith 0:2a53a4c3238c 54 usb_edBuf = usb_buf + HCCA_SIZE;
lorcansmith 0:2a53a4c3238c 55 usb_tdBuf = usb_buf + HCCA_SIZE + (EDS_COUNT*ED_SIZE);
lorcansmith 0:2a53a4c3238c 56 memset(usb_edBufAlloc, 0, EDS_COUNT);
lorcansmith 0:2a53a4c3238c 57 memset(usb_tdBufAlloc, 0, TDS_COUNT);
lorcansmith 0:2a53a4c3238c 58 }
lorcansmith 0:2a53a4c3238c 59
lorcansmith 0:2a53a4c3238c 60 volatile byte* usb_get_hcca()
lorcansmith 0:2a53a4c3238c 61 {
lorcansmith 0:2a53a4c3238c 62 return usb_hcca;
lorcansmith 0:2a53a4c3238c 63 }
lorcansmith 0:2a53a4c3238c 64
lorcansmith 0:2a53a4c3238c 65 volatile byte* usb_get_ed()
lorcansmith 0:2a53a4c3238c 66 {
lorcansmith 0:2a53a4c3238c 67 int i;
lorcansmith 0:2a53a4c3238c 68 for(i = 0; i < EDS_COUNT; i++)
lorcansmith 0:2a53a4c3238c 69 {
lorcansmith 0:2a53a4c3238c 70 if( !usb_edBufAlloc[i] )
lorcansmith 0:2a53a4c3238c 71 {
lorcansmith 0:2a53a4c3238c 72 usb_edBufAlloc[i] = 1;
lorcansmith 0:2a53a4c3238c 73 return usb_edBuf + i*ED_SIZE;
lorcansmith 0:2a53a4c3238c 74 }
lorcansmith 0:2a53a4c3238c 75 }
lorcansmith 0:2a53a4c3238c 76 return NULL; //Could not alloc ED
lorcansmith 0:2a53a4c3238c 77 }
lorcansmith 0:2a53a4c3238c 78
lorcansmith 0:2a53a4c3238c 79 volatile byte* usb_get_td()
lorcansmith 0:2a53a4c3238c 80 {
lorcansmith 0:2a53a4c3238c 81 int i;
lorcansmith 0:2a53a4c3238c 82 for(i = 0; i < TDS_COUNT; i++)
lorcansmith 0:2a53a4c3238c 83 {
lorcansmith 0:2a53a4c3238c 84 if( !usb_tdBufAlloc[i] )
lorcansmith 0:2a53a4c3238c 85 {
lorcansmith 0:2a53a4c3238c 86 usb_tdBufAlloc[i] = 1;
lorcansmith 0:2a53a4c3238c 87 return usb_tdBuf + i*TD_SIZE;
lorcansmith 0:2a53a4c3238c 88 }
lorcansmith 0:2a53a4c3238c 89 }
lorcansmith 0:2a53a4c3238c 90 return NULL; //Could not alloc TD
lorcansmith 0:2a53a4c3238c 91 }
lorcansmith 0:2a53a4c3238c 92
lorcansmith 0:2a53a4c3238c 93 void usb_free_ed(volatile byte* ed)
lorcansmith 0:2a53a4c3238c 94 {
lorcansmith 0:2a53a4c3238c 95 int i;
lorcansmith 0:2a53a4c3238c 96 i = (ed - usb_edBuf) / ED_SIZE;
lorcansmith 0:2a53a4c3238c 97 usb_edBufAlloc[i] = 0;
lorcansmith 0:2a53a4c3238c 98 }
lorcansmith 0:2a53a4c3238c 99
lorcansmith 0:2a53a4c3238c 100 void usb_free_td(volatile byte* td)
lorcansmith 0:2a53a4c3238c 101 {
lorcansmith 0:2a53a4c3238c 102 int i;
lorcansmith 0:2a53a4c3238c 103 i = (td - usb_tdBuf) / TD_SIZE;
lorcansmith 0:2a53a4c3238c 104 usb_tdBufAlloc[i] = 0;
lorcansmith 0:2a53a4c3238c 105 }
lorcansmith 0:2a53a4c3238c 106
lorcansmith 0:2a53a4c3238c 107
lorcansmith 0:2a53a4c3238c 108 #endif