Satoshi Togawa / Mbed 2 deprecated mpod_picasa_photoframe

Download picasa web albums photos automatically. This application requires mpod mother board. See also http://mbed.org/users/geodenx/notebook/mpod/

Dependencies:   BlinkLed HTTPClient EthernetInterface FatFileSystemCpp MSCFileSystem mbed-rtos mbed

Download picasa web albums photos automatically.
This application requires mpod mother board.

Picasaウェブアルバムから、自動的に写真をダウンロードして、ディジタルフォトフレームに表示します。
動作させるには mpod マザーボード が必要です。
プログラムの中で、ご自分のアルバムのRSSファイルへのURLを指定してからご利用下さい。

album description edit information description

main.cpp@0:dfd5cfea7112, 2012-08-22 (annotated)

Committer:
togayan
Date:
Wed Aug 22 16:00:38 2012 +0000
Revision:
0:dfd5cfea7112
Child:
2:531722036c0a
1st version of mpod_picasa_photoframe

Who changed what in which revision?

UserRevisionLine numberNew contents of line
togayan 0:dfd5cfea7112 1 #include "mbed.h"
togayan 0:dfd5cfea7112 2 #include "MSCFileSystem.h"
togayan 0:dfd5cfea7112 3 #include "EthernetInterface.h"
togayan 0:dfd5cfea7112 4 #include "HTTPClient.h"
togayan 0:dfd5cfea7112 5 #include "HTTPFile.h"
togayan 0:dfd5cfea7112 6 #include "BlinkLed.h"
togayan 0:dfd5cfea7112 7 #include "tinyxml2.h"
togayan 0:dfd5cfea7112 8
togayan 0:dfd5cfea7112 9 using namespace tinyxml2;
togayan 0:dfd5cfea7112 10
togayan 0:dfd5cfea7112 11 int GetFile(const char *path, const char *url);
togayan 0:dfd5cfea7112 12 int addNewLine(const char* dstPath, const char* srcPath);
togayan 0:dfd5cfea7112 13 int summarizeRss(const char* dstPath, const char* srcPath);
togayan 0:dfd5cfea7112 14
togayan 0:dfd5cfea7112 15 EthernetInterface eth;
togayan 0:dfd5cfea7112 16 HTTPClient http;
togayan 0:dfd5cfea7112 17 MSCFileSystem usb("usb");
togayan 0:dfd5cfea7112 18 BlinkLed led1(LED1, 0.02);
togayan 0:dfd5cfea7112 19 BlinkLed led2(LED2, 0.2);
togayan 0:dfd5cfea7112 20 BlinkLed ethGreen(p26, 0.02);
togayan 0:dfd5cfea7112 21 BlinkLed ethYellow(p25, 0.2);
togayan 0:dfd5cfea7112 22 DigitalOut fsusb30s(p9);
togayan 0:dfd5cfea7112 23 Timer timer;
togayan 0:dfd5cfea7112 24
togayan 0:dfd5cfea7112 25 /***** Please specify "albumRssUrl" *****/
togayan 0:dfd5cfea7112 26 const char* albumRssUrl = "http://picasaweb.google.com/data/feed/base/user/*****/albumid/*****?alt=rss&kind=photo&authkey=*****&hl=ja";
togayan 0:dfd5cfea7112 27
togayan 0:dfd5cfea7112 28 const char* albumRssPath = "/usb/album.xml";
togayan 0:dfd5cfea7112 29 const char* tempPath = "/usb/temp.xml";
togayan 0:dfd5cfea7112 30 const char* summaryPath = "/usb/summary.xml";
togayan 0:dfd5cfea7112 31
togayan 0:dfd5cfea7112 32 int main()
togayan 0:dfd5cfea7112 33 {
togayan 0:dfd5cfea7112 34 printf("\n\n================================\n");
togayan 0:dfd5cfea7112 35 printf("mpod Picasa Photo frame\n");
togayan 0:dfd5cfea7112 36 printf("================================\n\n");
togayan 0:dfd5cfea7112 37
togayan 0:dfd5cfea7112 38 // FSUSB30 switches to HSD1 (mbed)
togayan 0:dfd5cfea7112 39 printf("USB host was switched to HSD1(mbed).\n\n");
togayan 0:dfd5cfea7112 40 fsusb30s = 0; // HSD1
togayan 0:dfd5cfea7112 41
togayan 0:dfd5cfea7112 42 // Network setup
togayan 0:dfd5cfea7112 43 printf("Setup EtherNet with DHCP.\n");
togayan 0:dfd5cfea7112 44 eth.init(); //Use DHCP
togayan 0:dfd5cfea7112 45 eth.connect();
togayan 0:dfd5cfea7112 46
togayan 0:dfd5cfea7112 47 // Obtain original lastBuildDate
togayan 0:dfd5cfea7112 48 char lastBuildDateOriginal[32] = {0};
togayan 0:dfd5cfea7112 49 {
togayan 0:dfd5cfea7112 50 XMLDocument docOriginal;
togayan 0:dfd5cfea7112 51 if(XML_SUCCESS != docOriginal.LoadFile(summaryPath))
togayan 0:dfd5cfea7112 52 {
togayan 0:dfd5cfea7112 53 strcpy(lastBuildDateOriginal, "No original summary.xml in USB memory");
togayan 0:dfd5cfea7112 54 }
togayan 0:dfd5cfea7112 55 else
togayan 0:dfd5cfea7112 56 {
togayan 0:dfd5cfea7112 57 XMLElement* lastBuildDateOriginalElement = docOriginal.FirstChildElement("rss")->FirstChildElement("channel")->FirstChildElement("lastBuildDate");
togayan 0:dfd5cfea7112 58 if(NULL == lastBuildDateOriginalElement)
togayan 0:dfd5cfea7112 59 {
togayan 0:dfd5cfea7112 60 strcpy(lastBuildDateOriginal, "No \"lastBuildDate\" element in original RSS");
togayan 0:dfd5cfea7112 61 }
togayan 0:dfd5cfea7112 62 else
togayan 0:dfd5cfea7112 63 {
togayan 0:dfd5cfea7112 64 strcpy(lastBuildDateOriginal, lastBuildDateOriginalElement->GetText());
togayan 0:dfd5cfea7112 65 }
togayan 0:dfd5cfea7112 66 }
togayan 0:dfd5cfea7112 67 }
togayan 0:dfd5cfea7112 68 printf("\nlastBuildDate (original): %s\n", lastBuildDateOriginal);
togayan 0:dfd5cfea7112 69
togayan 0:dfd5cfea7112 70 // Download Album
togayan 0:dfd5cfea7112 71 GetFile(albumRssPath, albumRssUrl);
togayan 0:dfd5cfea7112 72
togayan 0:dfd5cfea7112 73 // Summarize RSS
togayan 0:dfd5cfea7112 74 addNewLine(tempPath, albumRssPath);
togayan 0:dfd5cfea7112 75 summarizeRss(summaryPath, tempPath);
togayan 0:dfd5cfea7112 76
togayan 0:dfd5cfea7112 77 // Obtain current lastBuildDate
togayan 0:dfd5cfea7112 78 char lastBuildDateCurrent[32] = {0};
togayan 0:dfd5cfea7112 79
togayan 0:dfd5cfea7112 80 XMLDocument docCurrent;
togayan 0:dfd5cfea7112 81 if(XML_SUCCESS != docCurrent.LoadFile(summaryPath))
togayan 0:dfd5cfea7112 82 {
togayan 0:dfd5cfea7112 83 fsusb30s = 1; // HSD2
togayan 0:dfd5cfea7112 84 error("No current summary.xml in USB memory.\n");
togayan 0:dfd5cfea7112 85 }
togayan 0:dfd5cfea7112 86
togayan 0:dfd5cfea7112 87 XMLElement* lastBuildDateCurrentElement = docCurrent.FirstChildElement("rss")->FirstChildElement("channel")->FirstChildElement("lastBuildDate");
togayan 0:dfd5cfea7112 88 if(NULL == lastBuildDateCurrentElement)
togayan 0:dfd5cfea7112 89 {
togayan 0:dfd5cfea7112 90 fsusb30s = 1; // HSD2
togayan 0:dfd5cfea7112 91 error("No \"lastBuildDate\" element in current RSS.\n");
togayan 0:dfd5cfea7112 92 }
togayan 0:dfd5cfea7112 93 strcpy(lastBuildDateCurrent, lastBuildDateCurrentElement->GetText());
togayan 0:dfd5cfea7112 94 printf("\nlastBuildDate (current) : %s\n", lastBuildDateCurrent);
togayan 0:dfd5cfea7112 95
togayan 0:dfd5cfea7112 96
togayan 0:dfd5cfea7112 97 char photoUrl[256] = {0};
togayan 0:dfd5cfea7112 98 char photoPath[32] = {0};
togayan 0:dfd5cfea7112 99 int photoNo = 1;
togayan 0:dfd5cfea7112 100 XMLElement* itemElement = docCurrent.FirstChildElement("rss")->FirstChildElement("channel")->FirstChildElement("item");
togayan 0:dfd5cfea7112 101 if(NULL == itemElement)
togayan 0:dfd5cfea7112 102 {
togayan 0:dfd5cfea7112 103 fsusb30s = 1; // HSD2
togayan 0:dfd5cfea7112 104 error("No \"enclosure\" element in current RSS.\n");
togayan 0:dfd5cfea7112 105 }
togayan 0:dfd5cfea7112 106 strcpy(photoUrl, itemElement->FirstChildElement("enclosure")->Attribute("url"));
togayan 0:dfd5cfea7112 107 sprintf(photoPath, "/usb/DCIM/%08d.jpg", photoNo);
togayan 0:dfd5cfea7112 108 GetFile(photoPath, photoUrl);
togayan 0:dfd5cfea7112 109 ++photoNo;
togayan 0:dfd5cfea7112 110
togayan 0:dfd5cfea7112 111 while( (itemElement = itemElement->NextSiblingElement( "item" ) ) != NULL )
togayan 0:dfd5cfea7112 112 {
togayan 0:dfd5cfea7112 113 strcpy(photoUrl, itemElement->FirstChildElement("enclosure")->Attribute("url"));
togayan 0:dfd5cfea7112 114 sprintf(photoPath, "/usb/DCIM/%08d.jpg", photoNo);
togayan 0:dfd5cfea7112 115 GetFile(photoPath, photoUrl);
togayan 0:dfd5cfea7112 116 ++photoNo;
togayan 0:dfd5cfea7112 117 }
togayan 0:dfd5cfea7112 118
togayan 0:dfd5cfea7112 119 // Wait for the completion of writing to USB Mass Storage Device.
togayan 0:dfd5cfea7112 120 wait(1);
togayan 0:dfd5cfea7112 121
togayan 0:dfd5cfea7112 122 // FSUSB30 switches to HSD2 (External Device)
togayan 0:dfd5cfea7112 123 printf("\nUSB host was switched to HSD2(External Device).\n");
togayan 0:dfd5cfea7112 124 fsusb30s = 1; // HSD2
togayan 0:dfd5cfea7112 125
togayan 0:dfd5cfea7112 126 // blink LED
togayan 0:dfd5cfea7112 127 led1.startBlink();
togayan 0:dfd5cfea7112 128 ethGreen.startBlink();
togayan 0:dfd5cfea7112 129
togayan 0:dfd5cfea7112 130 while(true){}
togayan 0:dfd5cfea7112 131 }
togayan 0:dfd5cfea7112 132
togayan 0:dfd5cfea7112 133 int GetFile(const char *path, const char *url)
togayan 0:dfd5cfea7112 134 {
togayan 0:dfd5cfea7112 135 led2.startBlink();
togayan 0:dfd5cfea7112 136 ethYellow.startBlink();
togayan 0:dfd5cfea7112 137 printf("\nGetting %s\n", url);
togayan 0:dfd5cfea7112 138
togayan 0:dfd5cfea7112 139 timer.stop();
togayan 0:dfd5cfea7112 140 timer.reset();
togayan 0:dfd5cfea7112 141 timer.start();
togayan 0:dfd5cfea7112 142
togayan 0:dfd5cfea7112 143 HTTPFile file(path);
togayan 0:dfd5cfea7112 144 HTTPResult retGet = http.get(url, &file);
togayan 0:dfd5cfea7112 145 if (retGet != HTTP_OK)
togayan 0:dfd5cfea7112 146 {
togayan 0:dfd5cfea7112 147 fsusb30s = 1; // HSD2
togayan 0:dfd5cfea7112 148 error("Error in http.get in GetFile(): %d\n", retGet);
togayan 0:dfd5cfea7112 149 }
togayan 0:dfd5cfea7112 150 file.clear();
togayan 0:dfd5cfea7112 151
togayan 0:dfd5cfea7112 152 timer.stop();
togayan 0:dfd5cfea7112 153 printf("timer.read_ms(): %d\n", timer.read_ms());
togayan 0:dfd5cfea7112 154
togayan 0:dfd5cfea7112 155 led2.finishBlink();
togayan 0:dfd5cfea7112 156 ethYellow.finishBlink();
togayan 0:dfd5cfea7112 157 return (0);
togayan 0:dfd5cfea7112 158 }
togayan 0:dfd5cfea7112 159
togayan 0:dfd5cfea7112 160 int addNewLine(const char* dstPath, const char* srcPath)
togayan 0:dfd5cfea7112 161 {
togayan 0:dfd5cfea7112 162 FILE* fpSrc = fopen(srcPath, "r");
togayan 0:dfd5cfea7112 163 if (fpSrc == NULL)
togayan 0:dfd5cfea7112 164 {
togayan 0:dfd5cfea7112 165 return -1;
togayan 0:dfd5cfea7112 166 }
togayan 0:dfd5cfea7112 167
togayan 0:dfd5cfea7112 168 FILE* fpDst = fopen(dstPath, "w");
togayan 0:dfd5cfea7112 169 if (fpDst == NULL)
togayan 0:dfd5cfea7112 170 {
togayan 0:dfd5cfea7112 171 return -1;
togayan 0:dfd5cfea7112 172 }
togayan 0:dfd5cfea7112 173
togayan 0:dfd5cfea7112 174 int src;
togayan 0:dfd5cfea7112 175 int previous = '\0';
togayan 0:dfd5cfea7112 176 while( (src = fgetc(fpSrc)) != EOF )
togayan 0:dfd5cfea7112 177 {
togayan 0:dfd5cfea7112 178 if(previous == '>' && src == '<')
togayan 0:dfd5cfea7112 179 {
togayan 0:dfd5cfea7112 180 fputc('\n', fpDst);
togayan 0:dfd5cfea7112 181 }
togayan 0:dfd5cfea7112 182 fputc(src, fpDst);
togayan 0:dfd5cfea7112 183 previous = src;
togayan 0:dfd5cfea7112 184 }
togayan 0:dfd5cfea7112 185
togayan 0:dfd5cfea7112 186 fclose(fpDst);
togayan 0:dfd5cfea7112 187 fclose(fpSrc);
togayan 0:dfd5cfea7112 188
togayan 0:dfd5cfea7112 189 return 0;
togayan 0:dfd5cfea7112 190 }
togayan 0:dfd5cfea7112 191
togayan 0:dfd5cfea7112 192 int summarizeRss(const char* dstPath, const char* srcPath)
togayan 0:dfd5cfea7112 193 {
togayan 0:dfd5cfea7112 194 FILE* fpSrc = fopen(srcPath, "r");
togayan 0:dfd5cfea7112 195 if (fpSrc == NULL)
togayan 0:dfd5cfea7112 196 {
togayan 0:dfd5cfea7112 197 return -1;
togayan 0:dfd5cfea7112 198 }
togayan 0:dfd5cfea7112 199
togayan 0:dfd5cfea7112 200 FILE* fpDst = fopen(dstPath, "w");
togayan 0:dfd5cfea7112 201 if (fpDst == NULL)
togayan 0:dfd5cfea7112 202 {
togayan 0:dfd5cfea7112 203 return -1;
togayan 0:dfd5cfea7112 204 }
togayan 0:dfd5cfea7112 205
togayan 0:dfd5cfea7112 206 char* ptn[] =
togayan 0:dfd5cfea7112 207 {
togayan 0:dfd5cfea7112 208 "<?xml",
togayan 0:dfd5cfea7112 209 "<rss",
togayan 0:dfd5cfea7112 210 "<channel",
togayan 0:dfd5cfea7112 211 "<lastBuildDate",
togayan 0:dfd5cfea7112 212 "<item",
togayan 0:dfd5cfea7112 213 "<enclosure",
togayan 0:dfd5cfea7112 214 "</item",
togayan 0:dfd5cfea7112 215 "</channel",
togayan 0:dfd5cfea7112 216 "</rss"
togayan 0:dfd5cfea7112 217 };
togayan 0:dfd5cfea7112 218 int ptnSize = sizeof(ptn) / sizeof(char*);
togayan 0:dfd5cfea7112 219
togayan 0:dfd5cfea7112 220 char buff[1024] = {0};
togayan 0:dfd5cfea7112 221 while( fgets(buff, 1024, fpSrc) != NULL )
togayan 0:dfd5cfea7112 222 {
togayan 0:dfd5cfea7112 223 for(int i = 0; i < ptnSize; ++i)
togayan 0:dfd5cfea7112 224 {
togayan 0:dfd5cfea7112 225 if( strncmp(buff, ptn[i], strlen(ptn[i])) == 0 )
togayan 0:dfd5cfea7112 226 {
togayan 0:dfd5cfea7112 227 fputs(buff, fpDst);
togayan 0:dfd5cfea7112 228 break;
togayan 0:dfd5cfea7112 229 }
togayan 0:dfd5cfea7112 230 }
togayan 0:dfd5cfea7112 231 }
togayan 0:dfd5cfea7112 232
togayan 0:dfd5cfea7112 233 fclose(fpDst);
togayan 0:dfd5cfea7112 234 fclose(fpSrc);
togayan 0:dfd5cfea7112 235
togayan 0:dfd5cfea7112 236 return 0;
togayan 0:dfd5cfea7112 237 }