[ESP8285] Remove ESP8285 specific builds, detect at runtime (letscont…

…rolit#3848)

Fixes: letscontrolit#3848

README.md

@@ -70,7 +70,6 @@ _[hardware-type]_ cn be any of:
 Hardware type    | Description                                 |
 -----------------|---------------------------------------------|
 ESP8266          | Espressif ESP8266 generic boards            |
-ESP8285          | Espressif ESP8285 generic boards 1MB Flash  |
 WROOM02          | Espressif ESP8266 WRoom02 boards            |
 ESP32            | Espressif ESP32 generic boards              |
 ESP32-wrover-kit | Espressif ESP32 wrover-kit boards           |
@@ -112,7 +111,6 @@ Some example firmware names:
 Firmware name                                      | Hardware                | Included plugins              |
 ---------------------------------------------------|-------------------------|-------------------------------|
 ESPEasy_mega-20210501_normal_ESP8266_1M.bin        | ESP8266 with 1MB flash  | Stable                        |
-ESPEasy_mega-20210501_normal_ESP8285_1M.bin        | ESP8285 with 1MB flash  | Stable                        |
 ESPEasy_mega-20210501_normal_ESP8266_4M1M.bin      | ESP8266 with 4MB flash  | Stable                        |
 ESPEasy_mega-20210501_test_A_ESP8266_4M1M.bin      | ESP8266 with 4MB flash  | Stable + Testing base + set A |
 ESPEasy_mega-20210501_normal_ESP32_4M316k.bin      | ESP32 with 4MB flash    | Stable                        |

dist/README.txt

@@ -27,9 +27,11 @@ There is also a number of special builds:
 - normal_beta => "Normal" using the staged (beta) branch of the esp8266/Arduino repository.
 
 Chip can be:
-- ESP8266      => Most likely option
-- ESP8285      => Used in some Sonoff modules
+- ESP8266      => Most likely option  (use also for ESP8285 chips)
 - ESP32        => Showing up in commercial products, but mainly seen on NodeMCU like boards.
+- ESP32-S2     => Newer version of ESP32, with more GPIO pins, but lacking some features of ESP32.
+- ESP32-S3     => Not yet supported in ESPEasy. (hardly available to buy)
+- ESP32-C3     => Support in ESPEasy will be added soon.
 
 MemorySize can be:
 - 1M  => 1 MB flash modules (e.g. almost all Sonoff modules)

docs/source/Participate/PlatformIO.rst

@@ -132,9 +132,9 @@ The environment definitions all have at least the used micro controller in the n
 For example:
 
 * ..._ESP8266_4Mnn -> ESP8266 has external flash, which can vary in size from 512 kB to 16 MB, with nn configured as filesystem.
-* ..._ESP8285_1M -> ESP8285 has the flash internal, so is always 1 MB.
+* ..._ESP8266_1M -> ESP8285 has the flash internal, which is almost always 1 MB. ESP8266 does have an external flash chip, which allows for exchanging it for a larger flash chip (recommended).
 * ..._ESP32_4M316k -> ESP32 with 4 MB flash and a 1.8 MB partition for the sketch. (316k SPIFFS)
-* ..._ESP32_16M2M_LittleFS -> ESP32 with 16 MB flash and a 4 MB partition for the sketch. (2MB LittleFS)
+* ..._ESP32_16M8M_LittleFS -> ESP32 with 16 MB flash and a 4 MB partition for the sketch. (8MB LittleFS)
 * ..._ESP32_16M1M_ETH -> ESP32 with 16 MB flash and a 4 MB partition for the sketch. (1MB SPIFFS, Wired ethernet support)
 
 Make a custom build using PlatformIO

docs/source/Participate/ProjectStructure.rst

@@ -108,8 +108,11 @@ ESP Chip Type
 -------------
 
 * ``ESP8266`` Most likely option.
-* ``ESP8285`` Used in some Sonoff modules. This chip has embedded flash, so no extra flash chip.
-* ``ESP32``   Experimental support at this moment.
+* ``ESP8285`` Supported in ``ESP8266`` builds. Used in some Sonoff modules. This chip has embedded flash, so no extra flash chip.
+* ``ESP32``   Allows for more memory and more GPIO pins.
+* ``ESP32-S2`` Newer version of ESP32. Has even more GPIO pins, but some specific features of ESP32 were removed.
+* ``ESP32-S3`` Not yet available.
+* ``ESP32-C3`` Support will be added soon.
 
 Memory Size and Partitioning
 ----------------------------

platformio_esp82xx_base.ini

@@ -165,11 +165,6 @@ build_flags               = -DSIZE_1M
 extends                   = esp82xx_1M
 board                     = esp01_1m
 
-[esp8285_1M]
-extends                   = esp82xx_1M
-board                     = esp8285
-build_flags               = ${esp8266_1M.build_flags} -DESP8285
-
 
 ;;; Minimal ***********************************************************
 ; Minimal build size for OTA                                          ;
@@ -185,11 +180,6 @@ build_flags               = ${esp82xx_1M.build_flags} -DPLUGIN_BUILD_MINIMAL_OTA
 extends                   = esp82xx_1M_OTA
 board                     = esp01_1m
 
-[esp8285_1M_OTA]
-extends                   = esp82xx_1M_OTA
-board                     = esp8285
-build_flags               = ${esp82xx_1M_OTA.build_flags} -DESP8285
-
 
 ;;; 2MB flash nodes  **************************************************
 ; Layout for 2M flash nodes                                           ;

platformio_esp82xx_envs.ini

@@ -198,15 +198,6 @@ build_flags               = ${regular_platform_alt_wifi.build_flags}
                             -D FEATURE_ADC_VCC=true
 
 
-; NORMAL: 1024k for esp8285 ----------------------
-[env:normal_ESP8285_1M]
-extends                   = esp8285_1M
-platform                  = ${regular_platform.platform}
-platform_packages         = ${regular_platform.platform_packages}
-build_flags               = ${regular_platform.build_flags}
-                            ${esp8285_1M.build_flags}
-
-
 ; NORMAL: 2048k WROOM02 version --------------------------
 [env:normal_WROOM02_2M]
 extends                   = espWroom2M
@@ -281,13 +272,6 @@ build_flags               = ${regular_platform.build_flags}
                             ${esp8266_1M_OTA.build_flags}
                             ${minimal_OTA_domoticz.build_flags}
 
-[env:minimal_core_274_ESP8285_1M_OTA_Domoticz]
-extends                   = esp8285_1M_OTA
-platform                  = ${regular_platform.platform}
-platform_packages         = ${regular_platform.platform_packages}
-build_flags               = ${regular_platform.build_flags} 
-                            ${esp8285_1M_OTA.build_flags}
-                            ${minimal_OTA_domoticz.build_flags}
 
 [env:minimal_core_274_sdk3_ESP8266_1M_OTA_Domoticz]
 extends                   = esp8266_1M_OTA
@@ -297,14 +281,6 @@ build_flags               = ${core_2_7_4_sdk3.build_flags}
                             ${esp8266_1M_OTA.build_flags}
                             ${minimal_OTA_domoticz.build_flags}
 
-[env:minimal_core_274_sdk3_ESP8285_1M_OTA_Domoticz]
-extends                   = esp8285_1M_OTA
-platform                  = ${core_2_7_4_sdk3.platform}
-platform_packages         = ${core_2_7_4_sdk3.platform_packages}
-build_flags               = ${core_2_7_4_sdk3.build_flags} 
-                            ${esp8285_1M_OTA.build_flags}
-                            ${minimal_OTA_domoticz.build_flags}
-
 
 [env:minimal_core_274_ESP8266_1M_OTA_FHEM_HA]
 extends                   = esp8266_1M_OTA
@@ -314,13 +290,6 @@ build_flags               = ${regular_platform.build_flags}
                             ${esp8266_1M_OTA.build_flags}
                             ${minimal_OTA_FHEM_HA.build_flags}
 
-[env:minimal_core_274_ESP8285_1M_OTA_FHEM_HA]
-extends                   = esp8285_1M_OTA
-platform                  = ${regular_platform.platform}
-platform_packages         = ${regular_platform.platform_packages}
-build_flags               = ${regular_platform.build_flags} 
-                            ${esp8285_1M_OTA.build_flags}
-                            ${minimal_OTA_FHEM_HA.build_flags}
 
 [env:minimal_core_274_sdk3_ESP8266_1M_OTA_FHEM_HA]
 extends                   = esp8266_1M_OTA
@@ -330,14 +299,6 @@ build_flags               = ${core_2_7_4_sdk3.build_flags}
                             ${esp8266_1M_OTA.build_flags}
                             ${minimal_OTA_FHEM_HA.build_flags}
 
-[env:minimal_core_274_sdk3_ESP8285_1M_OTA_FHEM_HA]
-extends                   = esp8285_1M_OTA
-platform                  = ${core_2_7_4_sdk3.platform}
-platform_packages         = ${core_2_7_4_sdk3.platform_packages}
-build_flags               = ${core_2_7_4_sdk3.build_flags} 
-                            ${esp8285_1M_OTA.build_flags}
-                            ${minimal_OTA_FHEM_HA.build_flags}
-
 
 
 ;;; IR      ***********************************************************
@@ -741,30 +702,6 @@ build_flags               = ${hard_esp82xx.build_flags}
                             -D PLUGIN_SET_SONOFF_POW
 
 
-; ITEAD / SONOFF S20 version --------------------
-;[env:hard_SONOFF_S20_1M]
-;extends                   = esp8266_1M_OTA, hard_esp82xx
-;platform                  = ${hard_esp82xx.platform}
-;platform_packages         = ${hard_esp82xx.platform_packages}
-;build_flags               = ${hard_esp82xx.build_flags} ${esp8266_1M_OTA.build_flags} -D PLUGIN_SET_SONOFF_S2x
-
-
-; ITEAD / SONOFF 4CH version --------------------
-;[env:hard_SONOFF_4CH_1M]
-;extends                   = esp8285_1M_OTA, hard_esp82xx
-;platform                  = ${hard_esp82xx.platform}
-;platform_packages         = ${hard_esp82xx.platform_packages}
-;build_flags               = ${hard_esp82xx.build_flags} ${esp8285_1M_OTA.build_flags} -D PLUGIN_SET_SONOFF_4CH
-
-
-
-; ITEAD / SONOFF TOUCH version ------------------
-;[env:hard_SONOFF_TOUCH_1M]
-;extends                   = esp8285_1M_OTA, hard_esp82xx
-;platform                  = ${hard_esp82xx.platform}
-;platform_packages         = ${hard_esp82xx.platform_packages}
-;build_flags               = ${hard_esp82xx.build_flags} ${esp8285_1M_OTA.build_flags} -D PLUGIN_SET_SONOFF_TOUCH
-
 
 ; Shelly1 Open Source (ESP8266-2MB)
 ; https://shelly.cloud/shelly1-open-source/

src/src/Helpers/Hardware.cpp

@@ -597,14 +597,30 @@ const __FlashStringHelper * getChipModel() {
     }
   }
   #endif
-#elif defined(ESP8285)
-  return F("ESP8285");
 #elif defined(ESP8266)
-  return F("ESP8266");
+  return isESP8285() ? F("ESP8285") : F("ESP8266");
 #endif
   return F("Unknown");
 }
 
+bool isESP8285() {
+  #ifdef ESP8266
+  const uint32_t efuse_blocks[4] {
+    READ_PERI_REG(0x3ff00050),
+    READ_PERI_REG(0x3ff00054),
+    READ_PERI_REG(0x3ff00058),
+    READ_PERI_REG(0x3ff0005c)
+  };
+
+  return (
+      (efuse_blocks[0] & (1 << 4))
+      || (efuse_blocks[2] & (1 << 16))
+  );
+  #else
+  return false;
+  #endif
+}
+
 uint8_t getChipRevision() {
   uint8_t rev = 0;
   #ifdef ESP32
@@ -1137,28 +1153,24 @@ bool getGpioInfo(int gpio, int& pinnr, bool& input, bool& output, bool& warning)
     case 16: pinnr =  0; break; // This is used by the deep-sleep mechanism
   }
   if (isFlashInterfacePin(gpio)) {
-    #ifdef ESP8285
-
-    if ((gpio == 9) || (gpio == 10)) {
-      // Usable on ESP8285
+    if (isESP8285()) {
+      if ((gpio == 9) || (gpio == 10)) {
+        // Usable on ESP8285
+      } else {
+        warning = true;
+      }
     } else {
       warning = true;
+      // On ESP8266 GPIO 9 & 10 are only usable if not connected to flash 
+      if (gpio == 9) {
+        // GPIO9 is internally used to control the flash memory.
+        input  = false;
+        output = false;
+      } else if (gpio == 10) {
+        // GPIO10 can be used as input only.
+        output = false;
+      }
     }
-
-    #else
-
-    warning = true;
-    // On ESP8266 GPIO 9 & 10 are only usable if not connected to flash 
-    if (gpio == 9) {
-      // GPIO9 is internally used to control the flash memory.
-      input  = false;
-      output = false;
-    } else if (gpio == 10) {
-      // GPIO10 can be used as input only.
-      output = false;
-    }
-
-    #endif
   }
 
   if (pinnr < 0 || pinnr > 16) {

src/src/Helpers/Hardware.h

@@ -80,6 +80,8 @@ uint8_t getChipCores();
 
 const __FlashStringHelper * getChipModel();
 
+bool isESP8285();
+
 uint8_t getChipRevision();
 
 uint32_t getSketchSize();