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annotate flash.c @ 85:18b154c447bb

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Add note about 1-wire wiring
author Daniel O'Connor <darius@dons.net.au>
date Thu, 12 Mar 2015 23:22:11 +1030
parents 05ba84c7da97
children
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83
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1 #include <stdint.h>
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2 #include <stdlib.h>
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3 #include <stdio.h>
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4 #include <string.h>
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5 #include "spiflash.h"
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6
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7 void
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8 flashcmd(int argc, char **argv) {
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9 uint8_t status, tmp, len;
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10 uint32_t addr;
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11
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12 if (argc == 0) {
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13 fputs("No command specified\n", stdout);
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14 return;
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15 }
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16
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17 if (!strcmp(argv[0], "str")) {
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18 status = spiflashreadstatus();
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19 fputs("Status = ", stdout);
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20 spiflashprintstatus(status, stdout);
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21 printf("(0x%02x)\n", status);
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22 } else if (!strcmp(argv[0], "stw")) {
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23 if (argc != 2) {
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24 fputs("Incorrect number of arguments\n", stdout);
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25 return;
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26 }
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27 tmp = atoi(argv[1]);
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28 spiflashwritestatus(tmp);
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29 status = spiflashreadstatus();
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30 printf("Wrote 0x%02x to status, now 0x%02x\n", tmp, status);
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31 } else if (!strcmp(argv[0], "er")) {
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32 if (argc != 2) {
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33 fputs("Incorrect number of arguments\n", stdout);
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34 return;
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35 }
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36 addr = atoi(argv[1]);
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37 spiflash4kerase(addr);
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38 printf("Erased 0x%x\n", (unsigned int)addr);
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39 } else if (!strcmp(argv[0], "rd")) {
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40 if (argc < 2) {
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41 fputs("Incorrect number of arguments\n", stdout);
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42 return;
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43 }
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44
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45 addr = atoi(argv[1]);
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46
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47 if (argc > 2)
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48 len = atoi(argv[2]);
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49 else
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50 len = 16;
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51
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52 spiflashstartread(addr);
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53
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54 for (uint32_t i = 0; i < len; i++)
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55 printf("Read 0x%02x from 0x%06x\n", spiflashreadbyte(), (unsigned int)(addr + i));
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56 spiflashstopread();
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57
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58 fputs("\n", stdout);
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59 } else if (!strcmp(argv[0], "wr")) {
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60 if (argc < 2) {
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61 fputs("Incorrect number of arguments\n", stdout);
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62 return;
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63 }
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64
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65 addr = atoi(argv[1]);
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66
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67 if (argc > 2)
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68 len = atoi(argv[2]);
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69 else
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70 len = 16;
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71
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72 for (int i = 0; i < 16; i += 2) {
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73 uint16_t data;
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74 data = ((i + 1) << 8) | i;
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75 printf("Writing 0x%04x to 0x%06x\n", data, (unsigned int)(addr + i));
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76
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77 if (i == 0)
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78 spiflashstartwrite(addr, data);
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79 else
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80 spiflashwriteword(data);
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81 }
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82 spiflashstopwrite();
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83 } else if (!strcmp(argv[0], "id")) {
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84 printf("Flash ID = 0x%04hx (expect 0xbf41)\n", spiflashreadid());
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85 } else {
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86 fputs("Unknown sub command\n", stdout);
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87 return;
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88 }
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89 }
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90 int
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91 flashreadblock(uint32_t addr, uint32_t len, void *_data) {
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92 return spiflashreadblock(addr, len, _data);
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93 }
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94
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95
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96 int
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97 flashwriteblock(uint32_t addr, uint32_t len, void *_data) {
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98 return spiflashwriteblock(addr, len, _data);
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99 }
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100