WROOM-02動作のまねごと part 5 [Arduino]
WROOM-02ネタ
PC組み立てにかまけて，ほったらかしでした。
今回は，ソースです。
2015/10/15 ソース一部修正。
とは言っても，TFT表示の見直しは，やっていません。
中身は，使ったライブラリのサンプルをちょっとだけ手直しして，くっつけただけです。
動かすには，SDカードのルートにSDWebServer(/index.htm, /edit/index.htm)のファイルの他，settings.txtを置きます。
settings.txt
以下がソース。
ESP03.ino
な，感じ。
PC組み立てにかまけて，ほったらかしでした。
今回は，ソースです。
2015/10/15 ソース一部修正。
とは言っても，TFT表示の見直しは，やっていません。
中身は，使ったライブラリのサンプルをちょっとだけ手直しして，くっつけただけです。
動かすには，SDカードのルートにSDWebServer(/index.htm, /edit/index.htm)のファイルの他，settings.txtを置きます。
settings.txt
// Wifi Settings ssid=hogehoge pw=hogehogehoge mdns=esp826603 // for NTP ntp_server=ntp.nict.jp timezoneoffset=9 ntp_interval=180 // for BME280 sealevel=75 dispinterval=5 loginterval=1
以下がソース。
ESP03.ino
/*
ESP03 (20151005)
*/
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <WiFiUdp.h> // for NTP
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library
#include <SPI.h>
#include <SD.h>
#include <Wire.h>
// http://blog.eldhrimnir.com/wordpress/?p=864 Arduino用RTCライブラリ(DS1307/RTC8564)
#include <RTClib_2.h>
#include <BME280_MOD-1022.h> // I2C温湿度・気圧センサ
#include <Ticker.h> // ESP8266 Timer Library ?
// SainSmart 1.8 TFT Display
#define TFT_CS 15 // pin6 : Low(10k)
#define TFT_RST 0 // not use Reset
#define TFT_DC 0 // pin8 : Boot Mode Select(Low or High)
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
// SD Card
#define SD_CS 2 // IO2 is High(10k)
// set up variables using the SD utility library functions:
Sd2Card card;
SdVolume volume;
SdFile root;
File uploadFile; //SDWebServer用
static bool hasSD = false; // SDカードの有無Flag
// Wire(I2C)
#define I2C_SDA 4 // pin 10
#define I2C_SCL 5 // pin 14
// BME280 温湿度・気圧センサー
#define BME280_ADDR 0x76 // I2C Address (select Pin5 0x76(GND) or 0x77(VDD)
// RTC8564-BN RTC
byte RtcADR = 0XA2 >> 1; // RTC8564 I2Cアドレス
// その他
#define DBG_PORT Serial
#define settings "settings.txt" //settings.txt
#define SECS_PER_HOUR (3600UL) // Time.hから
#define SECS_PER_MIN (60UL)
// settings.txt読み出し結果格納
char* ssid = "ssid\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"; // 34文字分
char* pw = "pass\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"; // 24文字分
char* host = "host\0\0\0\0\0\0\0\0\0\0\0\0\0"; // 17文字分
char* ntpServerName = "ntp\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"; // 33文字分
long LocalTimeOffset; // int?
int ntpinterval;
int sealevel;
int dispinterval;
int loginterval;
/* 内部フラグ */
bool flagdbg = true; // 表示ディレー
bool flagntp = false; // ntp 成功(Ture)/失敗(False)
// for NTP
unsigned int localPort = 2390; // local port to listen for UDP packets
IPAddress timeServerIP; // NTP server address
const int NTP_PACKET_SIZE = 48; // NTP time stamp is in the first 48 bytes of the message
byte packetBuffer[NTP_PACKET_SIZE]; // buffer to hold incoming and outgoing packets
DateTime LastUpdate; // last update date
WiFiUDP udp; // A UDP instance to let us send and receive packets over UDP
// for RTC
RTC_RTC8564 Rtc; //RTC-8564 JE/NB I2C Real-Time Clock
// WebServer
ESP8266WebServer server(80);
// 割り込み
Ticker TickTack; // 時間書き換え
Ticker tmTemp0; //温湿度計測(表示)
Ticker tmTemp1; //温湿度計測(SD書き出し)
void setup() {
Serial.begin(115200);
DBG_PORT.print("\n");
tft.initR(INITR_BLACKTAB); // initialize a ST7735S chip, black tab
tft.setRotation(3); // 270°回転
tftdrawtext("Startup....", ST7735_WHITE, 1);
Wire.begin(I2C_SDA, I2C_SCL); delay(40); // I2c pin (SDA, SCL)
Rtc.begin(); delay(40); // RTCスタート
// SD開始
if (SD.begin(SD_CS)) {
tft.println("SD Card initialized.");
hasSD = true; // SDカード有
} else {
tft.println("SD Card initialize Fail.");
hasSD = false; // SDカード無
exit;
}
if (flagdbg) delay(2000); // 表示Delay(なくてもOK)
// ファイルからネタ読み出し
tftdrawtext("Read SD Card....", ST7735_WHITE, 1);
String sssid, spw, shost, sntpsv;
File mySettings;
mySettings = SD.open(settings);
if (mySettings) {
tft.print(settings); tft.println(":");
// read from the file until there's nothing else in it:
String ln;
while (mySettings.available()) {
// ネタ取り込み
char wd = mySettings.read(); // btye→char
//tft.print(wd);
if (wd == '\n') {
// 1行出来た
String idx = ln.substring(0, ln.indexOf('=')); //+ '\0'; // 前半分
String src = ln.substring(ln.indexOf('=') +1); //+ '\0'; // 後ろ半分
char ret[src.length() + 1];
if (idx.equalsIgnoreCase("ssid")) sssid = src;
if (idx.equalsIgnoreCase("pw")) spw = src;
if (idx.equalsIgnoreCase("mdns")) shost = src;
if (idx.equalsIgnoreCase("ntp_server")) sntpsv= src;
if (idx.equalsIgnoreCase("timezoneoffset")) LocalTimeOffset = src.toInt();
if (idx.equalsIgnoreCase("ntp_interval")) ntpinterval = src.toInt();
if (idx.equalsIgnoreCase("sealevel")) sealevel = src.toInt();
if (idx.equalsIgnoreCase("dispinterval")) dispinterval = src.toInt();
if (idx.equalsIgnoreCase("loginterval")) loginterval = src.toInt();
ln = "";
wd = '\0';
} else {
ln += wd;
}
}
// close the file:
mySettings.close();
} else {
// if the file didn't open, print an error:
tft.print("error: opening "); tft.println(settings);
exit;
}
// String->char 移し替え
int ss;
ss = sssid.length() + 1; ssid[ss]; sssid.toCharArray(ssid, ss);
ss = sssid.length() + 1; pw[ss]; spw.toCharArray(pw, ss);
ss = shost.length() + 1; host[ss]; shost.toCharArray(host, ss);
ss = sntpsv.length() + 1; ntpServerName[ss]; sntpsv.toCharArray(ntpServerName, ss);
// Settings.txt読込み結果
tft.println("");
tft.println("SD Read Result:");
tft.print("ssid:"); tft.println(ssid);
tft.print("pw:"); tft.println(pw);
tft.print("mdns:"); tft.println(host);
tft.print("NTPsv:"); tft.println(ntpServerName);
tft.print("TimezoneOffset[h]:"); tft.println(LocalTimeOffset);
tft.print("NtpInterval[min]:"); tft.println(ntpinterval);
tft.print("sealevel[m]:"); tft.println(sealevel);
tft.print("dispinterval[Sec]:"); tft.println(dispinterval);
tft.print("loginterval[min]:"); tft.println(loginterval);
if (flagdbg) delay(2000); // 表示Delay(なくてもOK)
// WiFi接続
tftdrawtext("Connecting Wifi....", ST7735_WHITE, 1);
WiFi.begin(ssid, pw);
tft.println("Connecting to ");
tft.println(ssid);
uint8_t i = 0;
while (WiFi.status() != WL_CONNECTED && i++ < 20) { //wait 10 seconds
delay(500);
}
if(i == 21){
tft.println("Could not connect to");
tft.println(ssid);
while(1) delay(500);
}
tft.println("Connected! IP address: ");
tft.println(WiFi.localIP());
if (MDNS.begin(host)) {
MDNS.addService("http", "tcp", 80);
tft.println("MDNS responder started");
tft.print("You can now connect to http://");
tft.print(host);
tft.println(".local");
}
server.on("/list", HTTP_GET, printDirectory);
server.on("/edit", HTTP_DELETE, handleDelete);
server.on("/edit", HTTP_PUT, handleCreate);
server.on("/edit", HTTP_POST, [](){ returnOK(); });
server.onNotFound(handleNotFound);
server.onFileUpload(handleFileUpload);
server.begin();
tft.println("HTTP server started");
if (flagdbg) delay(2000); // 表示Delay(なくてもOK)
// NTPで時刻合わせ
tftdrawtext("Time Sync....", ST7735_WHITE, 1);
SetTimeByNTP();
if (flagdbg) delay(2000); // 表示Delay(なくてもOK)
// タイマー割込み
TickTack.attach(1.0, redrowsec); // 時刻再描画
tmTemp0.attach(dispinterval, BME280Meas, false); //温度測定(表示)
tmTemp1.attach(loginterval * SECS_PER_MIN, BME280Meas, true); //温度測定(表示)
tft.fillScreen(ST7735_BLACK); // TFT画面クリア
}
void loop() {
server.handleClient();
reSetTimeByNTP(); // NTP時計合わせ
}
/* ----- TFT ------- */
void tftdrawtext(char *text, uint16_t color, uint8_t size) {
// 画面初期化+1行目にテキスト表示
tft.fillScreen(ST7735_BLACK);
tft.setTextSize(size);
tft.setCursor(0, 0);
tft.setTextColor(color, ST7735_BLACK);
tft.setTextWrap(true);
tft.println(text);
}
void tftdrawComment(char *text, uint16_t color) {
// TFTのコメントエリア(一番下の行)へテキスト書き込み
// 1.8inch (128x160)用
int row, col;
row = 128 / 8; col = 160 / 5; // 横置き
//row = 160 / 8; col = 128 / 5; // 縦置き
tft.setTextWrap(false);
tft.setTextSize(1);
tft.fillRect(0, (row - 1) * 8, col * 5, 8, ST7735_BLACK); // 行消去
tft.setCursor(0, (row - 1) * 8);
tft.setTextColor(color, ST7735_BLACK);
tft.print(text);
tft.setTextWrap(true);
}
/* ----- I2C Display Date & Time ------- */
void redrowsec() {
// 時刻再描画
DateTime now = Rtc.now();
tft.setTextColor(ST7735_WHITE, ST7735_BLACK);
// 日付
tft.setTextSize(1);
tft.setCursor(1 * 5, 0);
//tft.print(now.month(), DEC); tft.print("/"); // 月を数字で
tft.print(printMonth(now.month())); // 月を英文字で
printDigitsS(now.day());
tft.print(" ");
// 曜日
tft.setCursor(1 * 5, 1 * 8);
tft.print("[");
if(now.dayOfWeek()==0) {
tft.setTextColor(ST7735_RED, ST7735_BLACK);
} else if(now.dayOfWeek()==6) {
tft.setTextColor(ST7735_BLUE, ST7735_BLACK);
} else {
tft.setTextColor(ST7735_WHITE, ST7735_BLACK);
}
tft.print(printWeekDay(now.dayOfWeek()));
tft.setTextColor(ST7735_WHITE, ST7735_BLACK);
tft.print("]");
// 時刻
if (! Rtc.isrunning()) {
tft.setTextColor(ST7735_RED, ST7735_BLACK);
} else if(! flagntp) {
tft.setTextColor(ST7735_YELLOW, ST7735_BLACK);
} else {
tft.setTextColor(ST7735_WHITE, ST7735_BLACK);
}
tft.setTextSize(2);
tft.setCursor(12 * 5, 0);
printDigits(now.hour());
tft.print(":");
printDigits(now.minute());
tft.print(":");
printDigits(now.second());
tft.setTextSize(1); // 文字サイズを戻す
}
void printDigits(int digits){
// 時分秒で一桁の時，頭に0をつけます。
if(digits < 10) tft.print('0');
tft.print(digits);
}
void printDigitsS(int digits){
// 日で一桁の時，頭にSpaceをつけます。
if(digits < 10) tft.print(' ');
tft.print(digits);
}
String printMonth(int digits){
// 月(数字) -> 文字
String ret="mon ";
switch (digits) {
case 1: ret="Jan."; break;
case 2: ret="Feb."; break;
case 3: ret="Mar."; break;
case 4: ret="Apr."; break;
case 5: ret="May "; break;
case 6: ret="June"; break;
case 7: ret="July"; break;
case 8: ret="Aug."; break;
case 9: ret="Sep."; break;
case 10: ret="Oct."; break;
case 11: ret="Nov."; break;
case 12: ret="Dec."; break;
default: break;
}
return ret;
}
String printWeekDay(int digits) {
// 曜日(数字) -> 文字
String ret="wk ";
switch (digits) {
case 0: ret="Sun."; break;
case 1: ret="Mon."; break;
case 2: ret="Tue."; break;
case 3: ret="Wed."; break;
case 4: ret="Thu."; break;
case 5: ret="Fri."; break;
case 6: ret="Sat."; break;
default: break;
}
return ret;
}
/* ----- 温湿度測定 ------- */
void BME280Meas(bool mode) {
// 温湿度測定
/*
int sealevel; // m
int dispinterval; // Sec
int loginterval; // Min
*/
float temp, humidity, pressure;
// 取得，表示(TFT)
/*
uint8_t chipID;
Serial.println("Welcome to the BME280 MOD-1022 weather multi-sensor test sketch!");
Serial.println("Embedded Adventures (www.embeddedadventures.com)");
chipID = BME280.readChipId();
// find the chip ID out just for fun
Serial.print("ChipID = 0x");
Serial.println(chipID, HEX);
*/
// need to read the NVM compensation parameters
BME280.readCompensationParams();
// Example for "indoor navigation"
// We'll switch into normal mode for regular automatic samples
BME280.writeStandbyTime(tsb_0p5ms); // tsb = 0.5ms
BME280.writeFilterCoefficient(fc_16); // IIR Filter coefficient 16
BME280.writeOversamplingPressure(os16x); // pressure x16
BME280.writeOversamplingTemperature(os2x); // temperature x2
BME280.writeOversamplingHumidity(os1x); // humidity x1
BME280.writeMode(smNormal);
while (BME280.isMeasuring()) { } //計測終了待ちloop
// read out the data - must do this before calling the getxxxxx routines
BME280.readMeasurements(); // 結果読み出し
temp = BME280.getTemperature(); // 必ず温度を最初に読むこと
humidity = BME280.getHumidity();
pressure = BME280.getPressure();
Serial.print("Temp: "); Serial.println(temp);
Serial.print("Humi: "); Serial.println(humidity);
Serial.print("Pres: "); Serial.println(pressure);
// TFT書き出し
tft.setCursor(0 * 5, 3 * 8);
tft.setTextSize(2);
tft.setTextColor(ST7735_RED, ST7735_BLACK);
tft.print("Temp: "); tft.println(temp);
tft.setTextSize(2);
tft.setTextColor(ST7735_CYAN, ST7735_BLACK);
tft.print("Humi: "); tft.println(humidity);
tft.setTextSize(2);
tft.setTextColor(ST7735_YELLOW, ST7735_BLACK);
tft.print("Pres: "); tft.println(pressure);
if(mode) {
// SD書き出し
File LogFile = SD.open("logTemp.txt", FILE_WRITE);
if (LogFile) {
Serial.println("Write out SD card...");
DateTime now = Rtc.now();
String value = String(now.year(), DEC)
+ "/" + (now.month() < 10 ? "0" : "") + String(now.month())
+ "/" + (now.day() < 10 ? "0" : "") + String(now.day())
+ " " + (now.hour() < 10 ? "0" : "") + String(now.hour())
+ ":" + (now.minute() < 10 ? "0" : "") + String(now.minute())
+ ":" + (now.second() < 10 ? "0" : "") + String(now.second());
value = value + "," + temp + "," + humidity + "," + pressure;
LogFile.println(value);
LogFile.close();
} else {
tftdrawComment("Can't open LogTemp.txt", ST7735_RED);
}
}
}
/* ----- Set DateTime by NTP ------- */
void reSetTimeByNTP() {
// NTPで時間再調整
DateTime now0 = Rtc.now();
if(now0.unixtime() < LastUpdate.unixtime() + ntpinterval * SECS_PER_MIN) return;
tftdrawComment("Reset DateTime by NTP.", ST7735_YELLOW);
SetTimeByNTP();
}
void SetTimeByNTP() {
// SampleのNTPClientより
// NTPを使ってRTCを再設定
udp.begin(localPort);
if(!timeServerIP) {
WiFi.hostByName(ntpServerName, timeServerIP);
DBG_PORT.print("NTP IP= "); DBG_PORT.println(timeServerIP);
} else {
DBG_PORT.print("already get IP= "); DBG_PORT.println(timeServerIP);
}
sendNTPpacket(timeServerIP); // send an NTP packet to a time server
delay(1000); // wait to see if a reply is available
int cb = udp.parsePacket();
if (!cb) {
DBG_PORT.println("no packet yet");
tftdrawComment("no packet yet", ST7735_RED);
flagntp = false;
if (flagdbg) delay(2000); // 表示Delay(なくてもOK)
} else {
DBG_PORT.print("packet received, length=");
tftdrawComment("NTP packet received !", ST7735_WHITE);
DBG_PORT.println(cb);
udp.read(packetBuffer, NTP_PACKET_SIZE); // バッファに受信データを読み込む
unsigned long highWord = word(packetBuffer[40], packetBuffer[41]);
unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]);
unsigned long secsSince1900 = highWord << 16 | lowWord;
DBG_PORT.print("Seconds since Jan 1 1900 = " );
DBG_PORT.println(secsSince1900);
DBG_PORT.print("Unix time = ");
const unsigned long seventyYears = 2208988800UL; // 1900年から1970年の70年を秒で表すと2208988800秒になる
unsigned long epoch = secsSince1900 - seventyYears; // NTPタイムスタンプから70年分の秒を引くとUNIXタイムが得られる
DBG_PORT.println(epoch); // print Unix time:
// print the hour, minute and second:
DBG_PORT.print("The UTC time is "); // UTC is the time at Greenwich Meridian (GMT)
DBG_PORT.print((epoch % 86400L) / 3600); // print the hour (86400 equals secs per day)
DBG_PORT.print(':');
if ( ((epoch % 3600) / 60) < 10 ) {
DBG_PORT.print('0'); // In the first 10 minutes of each hour, we'll want a leading '0'
}
DBG_PORT.print((epoch % 3600) / 60); // print the minute (3600 equals secs per minute)
DBG_PORT.print(':');
if ( (epoch % 60) < 10 ) {
DBG_PORT.print('0'); // In the first 10 seconds of each minute, we'll want a leading '0'
}
DBG_PORT.println(epoch % 60); // print the second
//setTime(epoch + LocalTimeOffset * SECS_PER_HOUR); // 内部時計に日時書き込み(Time.h)
Rtc.adjust(DateTime(epoch + LocalTimeOffset * SECS_PER_HOUR)); // RTCに日時設定(RTCLib_2.h用)
flagntp = true;
}
LastUpdate = Rtc.now();
}
// send an NTP request to the time server at the given address
unsigned long sendNTPpacket(IPAddress& address) {
DBG_PORT.println("sending NTP packet...");
// set all bytes in the buffer to 0
memset(packetBuffer, 0, NTP_PACKET_SIZE);
// Initialize values needed to form NTP request
// (see URL above for details on the packets)
packetBuffer[0] = 0b11100011; // LI, Version, Mode
packetBuffer[1] = 0; // Stratum, or type of clock
packetBuffer[2] = 6; // Polling Interval
packetBuffer[3] = 0xEC; // Peer Clock Precision
// 8 bytes of zero for Root Delay & Root Dispersion
packetBuffer[12] = 49;
packetBuffer[13] = 0x4E;
packetBuffer[14] = 49;
packetBuffer[15] = 52;
// all NTP fields have been given values, now
// you can send a packet requesting a timestamp:
udp.beginPacket(address, 123); //NTP requests are to port 123
udp.write(packetBuffer, NTP_PACKET_SIZE);
udp.endPacket();
}
/* ----- SD WebServer ------- */
void returnOK() {
server.sendHeader("Connection", "close");
server.sendHeader("Access-Control-Allow-Origin", "*");
server.send(200, "text/plain", "");
}
void returnFail(String msg) {
server.sendHeader("Connection", "close");
server.sendHeader("Access-Control-Allow-Origin", "*");
server.send(500, "text/plain", msg + "\r\n");
}
bool loadFromSdCard(String path){
String dataType = "text/plain";
if(path.endsWith("/")) path += "index.htm";
if(path.endsWith(".src")) path = path.substring(0, path.lastIndexOf("."));
else if(path.endsWith(".htm")) dataType = "text/html";
else if(path.endsWith(".css")) dataType = "text/css";
else if(path.endsWith(".js")) dataType = "application/javascript";
else if(path.endsWith(".png")) dataType = "image/png";
else if(path.endsWith(".gif")) dataType = "image/gif";
else if(path.endsWith(".jpg")) dataType = "image/jpeg";
else if(path.endsWith(".ico")) dataType = "image/x-icon";
else if(path.endsWith(".xml")) dataType = "text/xml";
else if(path.endsWith(".pdf")) dataType = "application/pdf";
else if(path.endsWith(".zip")) dataType = "application/zip";
File dataFile = SD.open(path.c_str());
if(dataFile.isDirectory()){
path += "/index.htm";
dataType = "text/html";
dataFile = SD.open(path.c_str());
}
if (!dataFile)
return false;
if (server.hasArg("download")) dataType = "application/octet-stream";
if (server.streamFile(dataFile, dataType) != dataFile.size()) {
Serial.println("Sent less data than expected!");
}
dataFile.close();
return true;
}
void handleFileUpload(){
if(server.uri() != "/edit") return;
HTTPUpload& upload = server.upload();
if(upload.status == UPLOAD_FILE_START){
if(SD.exists((char *)upload.filename.c_str())) SD.remove((char *)upload.filename.c_str());
uploadFile = SD.open(upload.filename.c_str(), FILE_WRITE);
Serial.print("Upload: START, filename: "); Serial.println(upload.filename);
} else if(upload.status == UPLOAD_FILE_WRITE){
if(uploadFile) uploadFile.write(upload.buf, upload.currentSize);
Serial.print("Upload: WRITE, Bytes: "); Serial.println(upload.currentSize);
} else if(upload.status == UPLOAD_FILE_END){
if(uploadFile) uploadFile.close();
Serial.print("Upload: END, Size: "); Serial.println(upload.totalSize);
}
}
void deleteRecursive(String path){
File file = SD.open((char *)path.c_str());
if(!file.isDirectory()){
file.close();
SD.remove((char *)path.c_str());
return;
}
file.rewindDirectory();
while(true) {
File entry = file.openNextFile();
if (!entry) break;
String entryPath = path + "/" +entry.name();
if(entry.isDirectory()){
entry.close();
deleteRecursive(entryPath);
} else {
entry.close();
SD.remove((char *)entryPath.c_str());
}
yield();
}
SD.rmdir((char *)path.c_str());
file.close();
}
void handleDelete(){
if(server.args() == 0) return returnFail("BAD ARGS");
String path = server.arg(0);
if(path == "/" || !SD.exists((char *)path.c_str())) {
returnFail("BAD PATH");
return;
}
deleteRecursive(path);
returnOK();
}
void handleCreate(){
if(server.args() == 0) return returnFail("BAD ARGS");
String path = server.arg(0);
if(path == "/" || SD.exists((char *)path.c_str())) {
returnFail("BAD PATH");
return;
}
if(path.indexOf('.') > 0){
File file = SD.open((char *)path.c_str(), FILE_WRITE);
if(file){
file.write((const char *)0);
file.close();
}
} else {
SD.mkdir((char *)path.c_str());
}
returnOK();
}
void printDirectory() {
if(!server.hasArg("dir")) return returnFail("BAD ARGS");
String path = server.arg("dir");
if(path != "/" && !SD.exists((char *)path.c_str())) return returnFail("BAD PATH");
File dir = SD.open((char *)path.c_str());
path = String();
if(!dir.isDirectory()){
dir.close();
return returnFail("NOT DIR");
}
dir.rewindDirectory();
server.setContentLength(CONTENT_LENGTH_UNKNOWN);
server.send(200, "text/json", "");
WiFiClient client = server.client();
server.sendContent("[");
for (int cnt = 0; true; ++cnt) {
File entry = dir.openNextFile();
if (!entry)
break;
String output;
if (cnt > 0)
output = ',';
output += "{\"type\":\"";
output += (entry.isDirectory()) ? "dir" : "file";
output += "\",\"name\":\"";
output += entry.name();
output += "\"";
output += "}";
server.sendContent(output);
entry.close();
}
server.sendContent("]");
dir.close();
}
void handleNotFound(){
if(hasSD && loadFromSdCard(server.uri())) return;
String message = "SDCARD Not Detected\n\n";
message += "URI: ";
message += server.uri();
message += "\nMethod: ";
message += (server.method() == HTTP_GET)?"GET":"POST";
message += "\nArguments: ";
message += server.args();
message += "\n";
for (uint8_t i=0; i < server.args(); i++){
message += " NAME:"+server.argName(i) + "\n VALUE:" + server.arg(i) + "\n";
}
server.send(404, "text/plain", message);
Serial.print(message);
}
な，感じ。
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