]> git.zerfleddert.de Git - proxmark3-svn/blame - common/cmd.c
Revert "Comms refactor (prerequisite of libproxmark work) (#371)"
[proxmark3-svn] / common / cmd.c
CommitLineData
5bcc76c4 1/*\r
2 * Proxmark send and receive commands\r
3 *\r
79a73ab2 4 * Copyright (c) 2012, Roel Verdult\r
5bcc76c4 5 * All rights reserved.\r
6 *\r
7 * Redistribution and use in source and binary forms, with or without\r
8 * modification, are permitted provided that the following conditions are met:\r
9 * 1. Redistributions of source code must retain the above copyright\r
10 * notice, this list of conditions and the following disclaimer.\r
11 * 2. Redistributions in binary form must reproduce the above copyright\r
12 * notice, this list of conditions and the following disclaimer in the\r
13 * documentation and/or other materials provided with the distribution.\r
14 * 3. Neither the name of the copyright holders nor the\r
15 * names of its contributors may be used to endorse or promote products\r
16 * derived from this software without specific prior written permission.\r
17 *\r
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY\r
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\r
21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY\r
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\r
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\r
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\r
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\r
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\r
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
28 *\r
29 * @file cmd.c\r
30 * @brief\r
31 */\r
32\r
33#include "cmd.h"\r
34#include "string.h"\r
5bcc76c4 35#include "proxmark3.h"\r
36\r
5bcc76c4 37bool cmd_receive(UsbCommand* cmd) {\r
38 \r
39 // Check if there is a usb packet available\r
40 if (!usb_poll()) return false;\r
41 \r
42 // Try to retrieve the available command frame\r
43 size_t rxlen = usb_read((byte_t*)cmd,sizeof(UsbCommand));\r
44\r
45 // Check if the transfer was complete\r
46 if (rxlen != sizeof(UsbCommand)) return false;\r
47 \r
48 // Received command successfully\r
49 return true;\r
50}\r
51\r
79a73ab2 52bool cmd_send(uint32_t cmd, uint32_t arg0, uint32_t arg1, uint32_t arg2, void* data, size_t len) {\r
5bcc76c4 53 UsbCommand txcmd;\r
54\r
28fdb04f 55 for (size_t i=0; i<sizeof(UsbCommand); i++) {\r
56 ((byte_t*)&txcmd)[i] = 0x00;\r
57 }\r
58 \r
5bcc76c4 59 // Compose the outgoing command frame\r
60 txcmd.cmd = cmd;\r
61 txcmd.arg[0] = arg0;\r
9440213d 62 txcmd.arg[1] = arg1; \r
5bcc76c4 63 txcmd.arg[2] = arg2;\r
64\r
65 // Add the (optional) content to the frame, with a maximum size of USB_CMD_DATA_SIZE\r
66 if (data && len) {\r
28fdb04f 67 len = MIN(len,USB_CMD_DATA_SIZE);\r
68 for (size_t i=0; i<len; i++) {\r
69 txcmd.d.asBytes[i] = ((byte_t*)data)[i];\r
70 }\r
71 }\r
5bcc76c4 72 \r
73 // Send frame and make sure all bytes are transmitted\r
74 if (usb_write((byte_t*)&txcmd,sizeof(UsbCommand)) != 0) return false;\r
75 \r
76 return true;\r
77}\r
78\r
79\r
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