Hardware Design: SIE
Sign in or create your account | Project List | Help
Hardware Design: SIE Git Source Tree
Root/
Source at commit 1f2712e created 13 years 5 months ago. By Carlos Camargo, Adding evolvable hardware example | |
---|---|
1 | /* |
2 | * JZ47xx GPIO lines |
3 | * |
4 | * Written 2010 by Andres Calderon andres.calderon@emqbit.com |
5 | */ |
6 | |
7 | #include <stdio.h> |
8 | #include <sys/mman.h> |
9 | #include <fcntl.h> |
10 | #include <stdlib.h> |
11 | #include <termios.h> |
12 | #include <unistd.h> |
13 | |
14 | #include <jz47xx_mmap.h> |
15 | |
16 | |
17 | void * |
18 | jz_mmap (off_t address) |
19 | { |
20 | int fd; |
21 | |
22 | void *pio; |
23 | |
24 | if ((fd = open ("/dev/mem", O_RDWR | O_SYNC)) == -1) |
25 | { |
26 | fprintf (stderr, "Cannot open /dev/mem.\n"); |
27 | return 0; |
28 | } |
29 | |
30 | pio = (void *) mmap (0, getpagesize (), PROT_READ | PROT_WRITE, MAP_SHARED, fd, address); |
31 | |
32 | if (pio == (void *) -1) |
33 | { |
34 | fprintf (stderr, "Cannot mmap.\n"); |
35 | return 0; |
36 | } |
37 | |
38 | return pio; |
39 | } |
40 | |
41 | void * |
42 | jz_fpga_map (off_t address) |
43 | { |
44 | int fd; |
45 | |
46 | void *fpga; |
47 | |
48 | if ((fd = open ("/dev/mem", O_RDWR | O_SYNC)) == -1) |
49 | { |
50 | fprintf (stderr, "Cannot open /dev/mem.\n"); |
51 | return 0; |
52 | } |
53 | |
54 | fpga = (void *) mmap (0, FPGA_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, address); |
55 | |
56 | if (fpga == (void *) -1) |
57 | { |
58 | fprintf (stderr, "Cannot mmap.\n"); |
59 | return 0; |
60 | } |
61 | |
62 | return fpga; |
63 | } |
64 | |
65 |
Branches:
master