1 // Author: Xianjun Jiao ([email protected]; [email protected])
2 // SPDX-FileCopyrightText: 2023 UGent
3 // SPDX-License-Identifier: AGPL-3.0-or-later
4
5 // Use this example together with fast_reg_log_analyzer.m (notter release)
6
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <unistd.h>
11 #include <fcntl.h>
12 #include <sys/mman.h>
13 #include <stdint.h>
14
main()15 int main()
16 {
17 unsigned int bram_size = 0x10000; // 64KB, aligned with openwifi hw .bd and devicetree
18 off_t bram_pbase = 0x83c40000; // physical base address, aligned with openwifi hw .bd and devicetree (this example: xpu @ 32bit boards)
19 uint32_t *bram32_vptr;
20 int fd, i, j;
21 uint32_t tsf_reg[524288*2];
22 FILE *fp;
23 // Map the BRAM physical address into user space getting a virtual address for it
24 if ((fd = open("/dev/mem", O_RDONLY | O_SYNC)) != -1) {
25 bram32_vptr = (uint32_t *)mmap(NULL, bram_size, PROT_READ, MAP_SHARED, fd, bram_pbase);
26
27 fp = fopen ("fast_reg_log.bin", "wb");
28 if (fp == NULL) {
29 printf("fopen fast_reg_log.bin failed! %d\n", (int)fp);
30 close(fd);
31 return(0);
32 }
33
34 for (j=0; j<10; j++) {
35 for (i=0; i<(524288*2); i=i+2) {
36 tsf_reg[i+0] = (*(bram32_vptr+57)); // read xpu register 57: rssi trx agc cca status
37 tsf_reg[i+1] = (*(bram32_vptr+58)); // read xpu register 58: low 32bit of tsf
38 }
39
40 // for (i=0; i<1024; i++) {
41 // printf("%d %x\n", tsf[i], reg[i]);
42 // }
43 // memcpy(buf, bram64_vptr, bram_size);
44
45 fwrite(tsf_reg, sizeof(uint32_t), 524288*2, fp);
46 }
47
48 fclose(fp);
49 // printf("%016llx\n", buf[65532]);
50 // printf("%016llx\n", buf[65533]);
51 // printf("%016llx\n", buf[65534]);
52 // printf("%016llx\n", buf[65535]);
53 // //for(i=0; i<32; i++) {
54 // // printf("0x%02x\n", buf[i]);
55 // //}
56
57 close(fd);
58 }
59 return(0);
60 }
61