sohaib qamar / SWUpdate_RPC

SWUpdate library to be used with RPC.

Fork of SWUpdate by David Smart

SWUpdate.cpp@0:e221363f7942, 2014-04-21 (annotated)

Committer:
WiredHome
Date:
Mon Apr 21 00:20:05 2014 +0000
Revision:
0:e221363f7942
Child:
1:208de08b1a19
Software Update - not yet reliable

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WiredHome 0:e221363f7942 1
WiredHome 0:e221363f7942 2 // Software Update via Ethernet from forum -
WiredHome 0:e221363f7942 3 // http://mbed.org/forum/mbed/topic/1183/
WiredHome 0:e221363f7942 4 #include "mbed.h"
WiredHome 0:e221363f7942 5 #include "SWUpdate.h"
WiredHome 0:e221363f7942 6 #include "HTTPClient.h"
WiredHome 0:e221363f7942 7 #include "HTTPText.h"
WiredHome 0:e221363f7942 8 #include "HTTPFile.h"
WiredHome 0:e221363f7942 9 #include <stdio.h>
WiredHome 0:e221363f7942 10
WiredHome 0:e221363f7942 11 extern "C" void mbed_reset();
WiredHome 0:e221363f7942 12
WiredHome 0:e221363f7942 13 #define DEBUG "SWup"
WiredHome 0:e221363f7942 14 #include <cstdio>
WiredHome 0:e221363f7942 15 #if (defined(DEBUG) && !defined(TARGET_LPC11U24))
WiredHome 0:e221363f7942 16 #define DBG(x, ...) std::printf("[DBG %s %3d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
WiredHome 0:e221363f7942 17 #define WARN(x, ...) std::printf("[WRN %s %3d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
WiredHome 0:e221363f7942 18 #define ERR(x, ...) std::printf("[ERR %s %3d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
WiredHome 0:e221363f7942 19 #define INFO(x, ...) std::printf("[INF %s %3d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
WiredHome 0:e221363f7942 20 #else
WiredHome 0:e221363f7942 21 #define DBG(x, ...)
WiredHome 0:e221363f7942 22 #define WARN(x, ...)
WiredHome 0:e221363f7942 23 #define ERR(x, ...)
WiredHome 0:e221363f7942 24 #define INFO(x, ...)
WiredHome 0:e221363f7942 25 #endif
WiredHome 0:e221363f7942 26
WiredHome 0:e221363f7942 27 bool SoftwareUpdate(const char *url, const char * name, Reboot_T reboot) {
WiredHome 0:e221363f7942 28 HTTPClient http;
WiredHome 0:e221363f7942 29 //http.setTimeout( 15000 );
WiredHome 0:e221363f7942 30 char fqurl[150]; // fully qualified url
WiredHome 0:e221363f7942 31 char verfn[32]; // local version file
WiredHome 0:e221363f7942 32 char fwfn[32];
WiredHome 0:e221363f7942 33 bool result = false; // many things can go wrong, assume failure
WiredHome 0:e221363f7942 34 //char *verfn = "/local/VERSION.TXT";
WiredHome 0:e221363f7942 35 char buf[50];
WiredHome 0:e221363f7942 36
WiredHome 0:e221363f7942 37 INFO("SoftwareUpdate(%s,%s)", url, name);
WiredHome 0:e221363f7942 38 snprintf(verfn, 32, "/local/%s.ver", name);
WiredHome 0:e221363f7942 39
WiredHome 0:e221363f7942 40 /* Read installed version string */
WiredHome 0:e221363f7942 41 int inst_ver = -1;
WiredHome 0:e221363f7942 42 FILE *fv = fopen(verfn, "r");
WiredHome 0:e221363f7942 43 if (fv) {
WiredHome 0:e221363f7942 44 fscanf(fv, "%d", &inst_ver);
WiredHome 0:e221363f7942 45 fclose(fv);
WiredHome 0:e221363f7942 46 }
WiredHome 0:e221363f7942 47 INFO(" Installed version: %d", inst_ver);
WiredHome 0:e221363f7942 48
WiredHome 0:e221363f7942 49 /* Download latest version string */
WiredHome 0:e221363f7942 50 HTTPText server_ver("test message");
WiredHome 0:e221363f7942 51 snprintf(fqurl, 150, "%s/%s.txt", url, name);
WiredHome 0:e221363f7942 52 HTTPResult r = http.get(fqurl, buf, sizeof(buf));
WiredHome 0:e221363f7942 53 if (r == HTTP_OK) {
WiredHome 0:e221363f7942 54 int latest_ver = -1;
WiredHome 0:e221363f7942 55 INFO(" read {%s}", buf);
WiredHome 0:e221363f7942 56 sscanf(buf, "%d", &latest_ver);
WiredHome 0:e221363f7942 57 INFO(" web version: %d", latest_ver);
WiredHome 0:e221363f7942 58 if (inst_ver != latest_ver) {
WiredHome 0:e221363f7942 59 INFO(" Downloading new firmware...");
WiredHome 0:e221363f7942 60 sprintf(fwfn, "/local/%s%d.BIN", name, latest_ver);
WiredHome 0:e221363f7942 61 snprintf(fqurl, 150, "%s/%s.bin", url, name);
WiredHome 0:e221363f7942 62
WiredHome 0:e221363f7942 63 HTTPFile latest(fwfn);
WiredHome 0:e221363f7942 64 r = http.get(fqurl, &latest);
WiredHome 0:e221363f7942 65 if (r == HTTP_OK) {
WiredHome 0:e221363f7942 66 sprintf(fwfn, "/local/%s%d.BIN", name, inst_ver);
WiredHome 0:e221363f7942 67 INFO(" Firmware downloaded, removing old version (%s).", fwfn);
WiredHome 0:e221363f7942 68 // if (remove(fwfn)) {
WiredHome 0:e221363f7942 69 ERR(" *** Failed to remove old version. ***");
WiredHome 0:e221363f7942 70 // }
WiredHome 0:e221363f7942 71 INFO("Updating stored version number.");
WiredHome 0:e221363f7942 72 fv = fopen(verfn, "w");
WiredHome 0:e221363f7942 73 if (fv) {
WiredHome 0:e221363f7942 74 int fr = fputs(buf, fv);
WiredHome 0:e221363f7942 75 if (fr < 0) {
WiredHome 0:e221363f7942 76 ERR("Failed (%d) to update stored version number.", fr);
WiredHome 0:e221363f7942 77 fclose( fv );
WiredHome 0:e221363f7942 78 } else {
WiredHome 0:e221363f7942 79 fclose( fv );
WiredHome 0:e221363f7942 80 if (reboot == AUTO_REBOOT) {
WiredHome 0:e221363f7942 81 WARN("Resetting...\n");
WiredHome 0:e221363f7942 82 wait_ms(200);
WiredHome 0:e221363f7942 83 mbed_reset();
WiredHome 0:e221363f7942 84 }
WiredHome 0:e221363f7942 85 result = true;
WiredHome 0:e221363f7942 86 }
WiredHome 0:e221363f7942 87 }
WiredHome 0:e221363f7942 88 } else {
WiredHome 0:e221363f7942 89 WARN("Couldn't download lastest firmware.\n");
WiredHome 0:e221363f7942 90 }
WiredHome 0:e221363f7942 91 }
WiredHome 0:e221363f7942 92 } else {
WiredHome 0:e221363f7942 93 WARN("Couldn't check latest firmware version.\n");
WiredHome 0:e221363f7942 94 }
WiredHome 0:e221363f7942 95 return result;
WiredHome 0:e221363f7942 96 }