Merge branch 'master' of https://github.com/esp8266/Arduino into gcc9.1

Author: earlephilhower

README.md

@@ -3,7 +3,7 @@ Arduino core for ESP8266 WiFi chip
 
 # Quick links
 
-- [Latest release documentation](https://arduino-esp8266.readthedocs.io/en/2.6.3/)
+- [Latest release documentation](https://arduino-esp8266.readthedocs.io/en/2.7.1/)
 - [Current "git version" documentation](https://arduino-esp8266.readthedocs.io/en/latest/)
 - [Install git version](https://arduino-esp8266.readthedocs.io/en/latest/installing.html#using-git-version) ([sources](doc/installing.rst#using-git-version))
 
@@ -28,15 +28,15 @@ ESP8266 Arduino core comes with libraries to communicate over WiFi using TCP and
 
 Starting with 1.6.4, Arduino allows installation of third-party platform packages using Boards Manager. We have packages available for Windows, Mac OS, and Linux (32 and 64 bit).
 
-- Install the current upstream Arduino IDE at the 1.8.7 level or later. The current version is on the [Arduino website](https://www.arduino.cc/en/main/software).
+- Install the current upstream Arduino IDE at the 1.8.9 level or later. The current version is on the [Arduino website](https://www.arduino.cc/en/main/software).
 - Start Arduino and open the Preferences window.
 - Enter ```https://arduino.esp8266.com/stable/package_esp8266com_index.json``` into the *Additional Board Manager URLs* field. You can add multiple URLs, separating them with commas.
 - Open Boards Manager from Tools > Board menu and install *esp8266* platform (and don't forget to select your ESP8266 board from Tools > Board menu after installation).
 
 #### Latest release [![Latest release](https://img.shields.io/github/release/esp8266/Arduino.svg)](https://github.com/esp8266/Arduino/releases/latest/)
 Boards manager link: `https://arduino.esp8266.com/stable/package_esp8266com_index.json`
 
-Documentation: [https://arduino-esp8266.readthedocs.io/en/2.6.3/](https://arduino-esp8266.readthedocs.io/en/2.6.3/)
+Documentation: [https://arduino-esp8266.readthedocs.io/en/2.7.1/](https://arduino-esp8266.readthedocs.io/en/2.7.1/)
 
 ### Using git version
 [![Linux build status](https://travis-ci.org/esp8266/Arduino.svg)](https://travis-ci.org/esp8266/Arduino)
@@ -73,7 +73,7 @@ Documentation for latest development version: https://arduino-esp8266.readthedoc
 
 ### Issues and support ###
 
-[ESP8266 Community Forum](https://www.esp8266.com/u/arduinoanswers) is a well-established community for questions and answers about Arduino for ESP8266. If you need help, have a "How do I..." type question, have a problem with a 3rd party library not hosted in this repo, or just want to discuss how to approach a problem, please ask there.
+[ESP8266 Community Forum](https://www.esp8266.com/u/arduinoanswers) is a well-established community for questions and answers about Arduino for ESP8266. Stackoverflow is also an alternative. If you need help, have a "How do I..." type question, have a problem with a 3rd party library not hosted in this repo, or just want to discuss how to approach a problem, please ask there.
 
 If you find the forum useful, please consider supporting it with a donation. <br />
 [![Donate](https://img.shields.io/badge/paypal-donate-yellow.svg)](https://www.paypal.com/webscr?cmd=_s-xclick&hosted_button_id=4M56YCWV6PX66)
@@ -96,7 +96,7 @@ For minor fixes of code and documentation, please go ahead and submit a pull req
 
 Check out the list of issues that are easy to fix — [easy issues pending](https://github.com/esp8266/Arduino/issues?q=is%3Aopen+is%3Aissue+label%3A%22level%3A+easy%22). Working on them is a great way to move the project forward.
 
-Larger changes (rewriting parts of existing code from scratch, adding new functions to the core, adding new libraries) should generally be discussed by opening an issue first.
+Larger changes (rewriting parts of existing code from scratch, adding new functions to the core, adding new libraries) should generally be discussed by opening an issue first. PRs with such changes require testing and approval.
 
 Feature branches with lots of small commits (especially titled "oops", "fix typo", "forgot to add file", etc.) should be squashed before opening a pull request. At the same time, please refrain from putting multiple unrelated changes into a single pull request.
 

boards.txt

@@ -4960,15 +4960,15 @@ espinotee.menu.baud.3000000.upload.speed=3000000
 wifinfo.name=WifInfo
 wifinfo.build.board=WIFINFO
 wifinfo.build.variant=wifinfo
-wifinfo.menu.ESPModule.ESP07192=ESP07 (1M/192K SPIFFS)
+wifinfo.menu.ESPModule.ESP07192=ESP07 (1M/192K FS)
 wifinfo.menu.ESPModule.ESP07192.build.board=ESP8266_ESP07
 wifinfo.menu.ESPModule.ESP07192.build.flash_ld=eagle.flash.1m192.ld
 wifinfo.menu.ESPModule.ESP07192.build.flash_size=1M
 wifinfo.menu.ESPModule.ESP07192.build.spiffs_blocksize=4096
 wifinfo.menu.ESPModule.ESP07192.build.spiffs_end=0xFB000
 wifinfo.menu.ESPModule.ESP07192.build.spiffs_start=0xCB000
 wifinfo.menu.ESPModule.ESP07192.upload.maximum_size=827376
-wifinfo.menu.ESPModule.ESP12=ESP12 (4M/1M SPIFFS)
+wifinfo.menu.ESPModule.ESP12=ESP12 (4M/1M FS)
 wifinfo.menu.ESPModule.ESP12.build.board=ESP8266_ESP12
 wifinfo.menu.ESPModule.ESP12.build.flash_ld=eagle.flash.4m1m.ld
 wifinfo.menu.ESPModule.ESP12.build.flash_size=4M

bootloaders/eboot/eboot.c

@@ -190,7 +190,7 @@ int copy_raw(const uint32_t src_addr,
     return 0;
 }
 
-#define XMC_SUPPORT
+//#define XMC_SUPPORT
 #ifdef XMC_SUPPORT
 // Define a few SPI0 registers we need access to
 #define ESP8266_REG(addr) *((volatile uint32_t *)(0x60000000+(addr)))

bootloaders/eboot/eboot.elf

@@ -266,7 +266,7 @@ using fs::SPIFFSConfig;
 #endif //FS_NO_GLOBALS
 
 #if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_SPIFFS)
-extern fs::FS SPIFFS;
+extern fs::FS SPIFFS __attribute__((deprecated("SPIFFS has been deprecated. Please consider moving to LittleFS or other filesystems.")));
 #endif
 
 #endif //FS_H

cores/esp8266/FS.h

@@ -2,6 +2,7 @@
 #define ESP_SCHEDULE_H
 
 #include <functional>
+#include <stdint.h>
 
 #define SCHEDULED_FN_MAX_COUNT 32
 

cores/esp8266/Schedule.h

@@ -1,7 +1,7 @@
 
 // autogenerated from https://raw.githubusercontent.com/nayarsystems/posix_tz_db/master/zones.csv
 // by script <esp8266 arduino core>/tools/TZupdate.sh
-// Mon Dec 16 13:08:18 UTC 2019
+// Thu May  7 19:02:21 UTC 2020
 //
 // This database is autogenerated from IANA timezone database
 //    https://www.iana.org/time-zones

cores/esp8266/TZ.h

@@ -250,7 +250,7 @@ extern volatile uint32_t* const esp8266_gpioToFn[16];
 #define UIFF	0 //RX FIFO Full
 
 //UART STATUS Registers Bits
-#define USTX    31 //TX PIN Level
+#define USTX    31 //TX PIN Level (Doesn't seem to work, always reads as 0 for both uarts. HW bug? Possible workaround: Enable loopback UxC0 |= 1<<UCLBE and read USRXD, see https://github.com/esp8266/Arduino/issues/7256 for discussion.)
 #define USRTS   30 //RTS PIN Level
 #define USDTR   39 //DTR PIN Level
 #define USTXC   16 //TX FIFO COUNT (8bit)

cores/esp8266/esp8266_peri.h

@@ -37,8 +37,8 @@ int32_t spiffs_hal_read(uint32_t addr, uint32_t size, uint8_t *dst) {
     return flash_hal_read(addr, size, dst);
 }
 
-
-
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 
 namespace spiffs_impl {
 
@@ -149,6 +149,8 @@ extern "C" void spiffs_request_end(void)
     SPIFFS.end();
 }
 
+#pragma GCC diagnostic pop
+
 #endif // ARDUINO
 #endif // !CORE_MOCK
 

cores/esp8266/spiffs_api.cpp

@@ -171,7 +171,7 @@ class SPIFFSImpl : public FSImpl
             return false;
         }
         _cfg = *static_cast<const SPIFFSConfig *>(&cfg);
-	return true;
+        return true;
     }
 
     bool begin() override

cores/esp8266/spiffs_api.h

@@ -344,7 +344,7 @@ Parameters in Arduino IDE:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 - Card: "WEMOS D1 Mini Lite"
-- Flash Size: "1M (512K SPIFFS)"
+- Flash Size: "1M (512K FS)"
 - CPU Frequency: "80 Mhz"
 
 Power:

doc/boards.rst

@@ -102,9 +102,9 @@ The web browser you're using to read this document keeps a list of 100s of certi
 
 In many cases your application will know the specific CA it needs to validate web or MQTT servers against (often just a single, self-signing CA private to your institution).  Simply load your private CA in a `BearSSL::X509List` and use that as your trust anchor.
 
-However, there are cases where you will not know beforehand which CA you will need (i.e. a user enters a website through a keypad), and you need to keep the list of CAs just like your web browser.  In those cases, you need to generate a certificate bundle on the PC while compiling your application, upload the `certs.ar` bundle to SPIFFS or SD when uploading your application binary, and pass it to a `BearSSL::CertStore()` in order to validate TLS peers.
+However, there are cases where you will not know beforehand which CA you will need (i.e. a user enters a website through a keypad), and you need to keep the list of CAs just like your web browser.  In those cases, you need to generate a certificate bundle on the PC while compiling your application, upload the `certs.ar` bundle to LittleFS or SD when uploading your application binary, and pass it to a `BearSSL::CertStore()` in order to validate TLS peers.
 
-See the `BearSSL_CertStore` example for full details as the `BearSSL::CertStore` requires the creation of a cookie-cutter object for filesystem access (because the SD and SPIFFS filesystems are presently incompatible with each other).  At a high level in your `setup()` you will call `BearSSL::initCertStore()` on a global object, and then pass this global certificate store to `client.setCertStore(&gCA)` before every connection attempt to enable it as a validation option.
+See the `BearSSL_CertStore` example for full details.
 
 Supported Crypto
 ~~~~~~~~~~~~~~~~

doc/esp8266wifi/bearssl-client-secure-class.rst

@@ -42,31 +42,32 @@ Load client certificate from file system.
 .. code:: cpp
 
     #include <FS.h>
+    #include <LittleFS.h>
     #include <ESP8266WiFi.h>
     #include <WiFiClientSecure.h>
 
-    const char* certyficateFile = "/client.cer";
+    const char* certificateFile = "/client.cer";
 
 *setup() or loop()*
 
 .. code:: cpp
 
-    if (!SPIFFS.begin()) 
+    if (!LittleFS.begin())
     {
       Serial.println("Failed to mount the file system");
       return;
     }
 
-    Serial.printf("Opening %s", certyficateFile);
-    File crtFile = SPIFFS.open(certyficateFile, "r");
+    Serial.printf("Opening %s", certificateFile);
+    File crtFile = LittleFS.open(certificateFile, "r");
     if (!crtFile)
     {
       Serial.println(" Failed!");
     }
 
     WiFiClientSecure client;
 
-    Serial.print("Loading %s", certyficateFile);
+    Serial.print("Loading %s", certificateFile);
     if (!client.loadCertificate(crtFile))
     {
       Serial.println(" Failed!");

doc/esp8266wifi/client-secure-class.rst

@@ -79,7 +79,7 @@ perform. It is not listed among libraries verified to work with ESP8266.
 
 `Read more <a03-library-does-not-work.rst>`__.
 
-In the IDE, for ESP-12E that has 4M flash, I can choose 4M (1M SPIFFS) or 4M (3M SPIFFS). No matter what I select, the IDE tells me the maximum code space is about 1M. Where does my flash go?
+In the IDE, for ESP-12E that has 4M flash, I can choose 4M (1M FS) or 4M (3M FS). No matter what I select, the IDE tells me the maximum code space is about 1M. Where does my flash go?
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 The reason we cannot have more than 1MB of code in flash has to do with
@@ -90,7 +90,7 @@ total, but switching such "banks" on the fly is not easy and efficient,
 so we don't bother doing that. Besides, no one has so far complained
 about 1MB of code space being insufficient for practical purposes.
 
-The option to choose 3M or 1M SPIFFS is to optimize the upload time.
+The option to choose 3M or 1M filesystem is to optimize the upload time.
 Uploading 3MB takes a long time so sometimes you can just use 1MB. Other
 2MB of flash can still be used with ``ESP.flashRead`` and
 ``ESP.flashWrite`` APIs if necessary.

doc/faq/readme.rst

@@ -63,6 +63,16 @@ following include to the sketch:
 
     #include "FS.h"
 
+SPIFFS Deprecation Warning
+--------------------------
+
+SPIFFS is currently deprecated and may be removed in future releases of
+the core.  Please consider moving your code to LittleFS.  SPIFFS is not
+actively supported anymore by the upstream developer, while LittleFS is
+under active development, supports real directories, and is many times
+faster for most operations.
+
+
 SPIFFS and LittleFS
 -------------------
 

doc/filesystem.rst

@@ -244,6 +244,6 @@ BeagleBone, CubieBoard).
 - `What is PlatformIO? <https://docs.platformio.org/en/latest/what-is-platformio.html?utm_source=arduino-esp8266>`__
 - `PlatformIO IDE <https://platformio.org/platformio-ide?utm_source=arduino-esp8266>`__
 - `PlatformIO Core <https://docs.platformio.org/en/latest/core.html?utm_source=arduino-esp8266>`__ (command line tool)
-- `Advanced usage <https://docs.platformio.org/en/latest/platforms/espressif8266.html?utm_source=arduino-esp8266>`__ - custom settings, uploading to SPIFFS, Over-the-Air (OTA), staging version
+- `Advanced usage <https://docs.platformio.org/en/latest/platforms/espressif8266.html?utm_source=arduino-esp8266>`__ - custom settings, uploading to LittleFS, Over-the-Air (OTA), staging version
 - `Integration with Cloud and Standalone IDEs <https://docs.platformio.org/en/latest/ide.html?utm_source=arduino-esp8266>`__ - Cloud9, Codeanywhere, Eclipse Che (Codenvy), Atom, CLion, Eclipse, Emacs, NetBeans, Qt Creator, Sublime Text, VIM, Visual Studio, and VSCode
 - `Project Examples <https://docs.platformio.org/en/latest/platforms/espressif8266.html?utm_source=arduino-esp8266#examples>`__

doc/installing.rst

@@ -25,7 +25,7 @@ This is a bit different from standard EEPROM class. You need to call ``EEPROM.be
 
 ``EEPROM.write`` does not write to flash immediately, instead you must call ``EEPROM.commit()`` whenever you wish to save changes to flash. ``EEPROM.end()`` will also commit, and will release the RAM copy of EEPROM contents.
 
-EEPROM library uses one sector of flash located just after the SPIFFS.
+EEPROM library uses one sector of flash located just after the embedded filesystem.
 
 `Three examples <https://github.com/esp8266/Arduino/tree/master/libraries/EEPROM>`__  included.
 

doc/libraries.rst

@@ -360,7 +360,7 @@ If this is the case, then most likely ESP module has not been reset after initia
 The most common causes of OTA failure are as follows:
 
 - not enough physical memory on the chip (e.g. ESP01 with 512K flash memory is not enough for OTA).
-- too much memory declared for SPIFFS so new sketch will not fit between existing sketch and SPIFFS – see `Update process - memory view <#update-process-memory-view>`__.
+- too much memory declared for the filesystem so new sketch will not fit between existing sketch and the filesystem – see `Update process - memory view <#update-process-memory-view>`__.
 - too little memory declared in Arduino IDE for your selected board (i.e. less than physical size).
 - not resetting the ESP module after initial upload using serial port.
 

doc/ota_updates/readme.rst

@@ -56,7 +56,7 @@ unsigned int status = WL_IDLE_STATUS;
 
 void setup() {
   delay(1000);
-  Serial.begin(9600);
+  Serial.begin(115200);
   Serial.println();
   Serial.println("Configuring access point...");
   /* You can remove the password parameter if you want the AP to be open. */

libraries/DNSServer/examples/CaptivePortalAdvanced/CaptivePortalAdvanced.ino

@@ -15,9 +15,6 @@ byte value;
 void setup() {
   // initialize serial and wait for port to open:
   Serial.begin(115200);
-  while (!Serial) {
-    ; // wait for serial port to connect. Needed for Leonardo only
-  }
   EEPROM.begin(512);
 }
 

libraries/EEPROM/examples/eeprom_read/eeprom_read.ino

@@ -8,8 +8,6 @@
 #include <ESP8266WiFi.h>
 #include <ESP8266HTTPClient.h>
 
-#define USE_SERIAL Serial
-
 /* this can be run with an emulated server on host:
         cd esp8266-core-root-dir
         cd tests/host
@@ -27,21 +25,21 @@
 
 void setup() {
 
-  USE_SERIAL.begin(115200);
+  Serial.begin(115200);
 
-  USE_SERIAL.println();
-  USE_SERIAL.println();
-  USE_SERIAL.println();
+  Serial.println();
+  Serial.println();
+  Serial.println();
 
   WiFi.begin(STASSID, STAPSK);
 
   while (WiFi.status() != WL_CONNECTED) {
     delay(500);
-    USE_SERIAL.print(".");
+    Serial.print(".");
   }
-  USE_SERIAL.println("");
-  USE_SERIAL.print("Connected! IP address: ");
-  USE_SERIAL.println(WiFi.localIP());
+  Serial.println("");
+  Serial.print("Connected! IP address: ");
+  Serial.println(WiFi.localIP());
 
 }
 
@@ -52,29 +50,29 @@ void loop() {
     WiFiClient client;
     HTTPClient http;
 
-    USE_SERIAL.print("[HTTP] begin...\n");
+    Serial.print("[HTTP] begin...\n");
     // configure traged server and url
     http.begin(client, "http://" SERVER_IP "/postplain/"); //HTTP
     http.addHeader("Content-Type", "application/json");
 
-    USE_SERIAL.print("[HTTP] POST...\n");
+    Serial.print("[HTTP] POST...\n");
     // start connection and send HTTP header and body
     int httpCode = http.POST("{\"hello\":\"world\"}");
 
     // httpCode will be negative on error
     if (httpCode > 0) {
       // HTTP header has been send and Server response header has been handled
-      USE_SERIAL.printf("[HTTP] POST... code: %d\n", httpCode);
+      Serial.printf("[HTTP] POST... code: %d\n", httpCode);
 
       // file found at server
       if (httpCode == HTTP_CODE_OK) {
         const String& payload = http.getString();
-        USE_SERIAL.println("received payload:\n<<");
-        USE_SERIAL.println(payload);
-        USE_SERIAL.println(">>");
+        Serial.println("received payload:\n<<");
+        Serial.println(payload);
+        Serial.println(">>");
       }
     } else {
-      USE_SERIAL.printf("[HTTP] POST... failed, error: %s\n", http.errorToString(httpCode).c_str());
+      Serial.printf("[HTTP] POST... failed, error: %s\n", http.errorToString(httpCode).c_str());
     }
 
     http.end();

libraries/ESP8266HTTPClient/examples/PostHttpClient/PostHttpClient.ino

@@ -25,8 +25,8 @@
 
 // Select the FileSystem by uncommenting one of the lines below
 
-#define USE_SPIFFS
-//#define USE_LITTLEFS
+//#define USE_SPIFFS
+#define USE_LITTLEFS
 //#define USE_SDFS
 
 // Uncomment the following line to embed a version of the web page in the code