Add itead-sonoff-s31-lite (#1830)

This adds a hardware profile for the S31 "Lite" version, which does not have the power monitoring chip installed on the board. The device is otherwise identical. It uses the exact same board and components as the regular S31.

Signed-off-by: Michael Murton <6764025+CrazyIvan359@users.noreply.github.com>

code/espurna/config/arduino.h

@@ -73,6 +73,7 @@
 //#define ITEAD_SONOFF_RF
 //#define ITEAD_SONOFF_RFBRIDGE
 //#define ITEAD_SONOFF_S31
+//#define ITEAD_SONOFF_S31_LITE
 //#define ITEAD_SONOFF_SV
 //#define ITEAD_SONOFF_T1_1CH
 //#define ITEAD_SONOFF_T1_2CH

code/espurna/config/hardware.h

@@ -900,6 +900,25 @@
     #define CSE7766_SUPPORT         1
     #define CSE7766_PIN             1
 
+#elif defined(ITEAD_SONOFF_S31_LITE)
+
+    // Info
+    #define MANUFACTURER            "ITEAD"
+    #define DEVICE                  "SONOFF_S31_LITE"
+
+    // Buttons
+    #define BUTTON1_PIN             0
+    #define BUTTON1_MODE            BUTTON_PUSHBUTTON | BUTTON_DEFAULT_HIGH
+    #define BUTTON1_RELAY           1
+
+    // Relays
+    #define RELAY1_PIN              12
+    #define RELAY1_TYPE             RELAY_TYPE_NORMAL
+
+    // LEDs
+    #define LED1_PIN                13
+    #define LED1_PIN_INVERSE        1
+
 #elif defined(ITEAD_SONOFF_IFAN02)
 
     // Info

code/platformio.ini

@@ -554,6 +554,16 @@ build_flags = ${common.build_flags_1m0m} -DITEAD_SONOFF_S31 -DDISABLE_POSTMORTEM
 upload_port = ${common.ota_upload_port}
 upload_flags = ${common.ota_upload_flags}
 
+[env:itead-sonoff-s31-lite]
+board = ${common.board_1m}
+build_flags = ${common.build_flags_1m0m} -DITEAD_SONOFF_S31_LITE
+
+[env:itead-sonoff-s31-lite-ota]
+board = ${common.board_1m}
+build_flags = ${common.build_flags_1m0m} -DITEAD_SONOFF_S31_LITE
+upload_port = ${common.ota_upload_port}
+upload_flags = ${common.ota_upload_flags}
+
 [env:itead-sonoff-ifan02]
 board = ${common.board_1m}
 build_flags = ${common.build_flags_1m0m} -DITEAD_SONOFF_IFAN02