[BOARD] Add ISNO Super build environment (ESP32-S3, dual CC1101 433 + 868/915 MHz) (#2378)

The ISNO Super is an open-hardware ESP32-S3 board carrying two CC1101
sub-GHz radios (433 MHz and 868/915 MHz) combined on a single antenna
through a passive LC diplexer. This environment builds on the
esp32dev-multi_receiver RF stack; it drives the 868/915 MHz radio (868
in the EU, 915 in the US) and parks the 433 MHz one using the existing
RF_MODULE_SECONDARY_CS hook in commonRF.cpp.

Signed-off-by: Olivier Delafosse <olshad@gmail.com>

.github/workflows/environments.json

@@ -5,6 +5,7 @@
     "lastUpdated": "2025-12-24",
     "environments": {
         "all": [
+            "isno-super",
             "rfbridge",
             "rfbridge-direct",
             "theengs-bridge",

environments.ini

@@ -2192,3 +2192,43 @@ build_flags =
   '-DenableMultiGTWSync=false'
 custom_description = Regular BLE gateway based on esp-idf with adaptive scanning activated, automatically adapts the scan parameters depending on your devices
 custom_img = img/boards/esp32dev.jpg
+
+[env:isno-super]
+platform = ${com.esp32_platform}
+platform_packages = ${com.esp32_platform_packages}
+board = esp32-s3-devkitc-1
+board_build.flash_size = 8MB
+board_upload.flash_size = 8MB
+board_build.partitions = default_8MB.csv
+lib_deps =
+  ${com-esp32.lib_deps}
+  ${libraries.rc-switch}
+  ${libraries.smartrc-cc1101-driver-lib}
+  ${libraries.rtl_433_ESP}
+  ${libraries.newremoteswitch}
+build_flags =
+  ${com-esp32.build_flags}
+  '-DZgatewayRF="RF"'
+  '-DZgatewayRF2="RF2"'
+  '-DZgatewayRTL_433="RTL_433"'
+  '-DZradioCC1101="CC1101"'
+  '-DGateway_Name="OMG_ISNO_Super"'
+  '-DvalueAsATopic=true'
+  '-DNO_INT_TEMP_READING=true' ; internal temperature sensor not building on ESP32-S3
+  '-DRF_CC1101="CC1101"'
+; ISNO Super: two CC1101 share one SPI bus, combined on a single antenna through an LC diplexer
+  '-DRF_MODULE_SCK=4'
+  '-DRF_MODULE_MISO=5'
+  '-DRF_MODULE_MOSI=6'
+; active radio = 868 MHz (RadioLib / rtl_433 path)
+  '-DRF_MODULE_CS=7'
+  '-DRF_MODULE_GDO0=1'
+  '-DRF_MODULE_GDO2=2'
+; same pins for the ELECHOUSE path (ZgatewayRF / ZgatewayRF2)
+  '-DRF_CC1101_SCK=4'
+  '-DRF_CC1101_MISO=5'
+  '-DRF_CC1101_MOSI=6'
+  '-DRF_CC1101_CS=7'
+; park the 433 MHz radio, CS held high by commonRF.cpp
+  '-DRF_MODULE_SECONDARY_CS=15'
+custom_description = ISNO Super, ESP32-S3 with two CC1101 (433 MHz + 868/915 MHz) combined on one antenna through an LC diplexer; the 868/915 MHz radio is active (868 in the EU, 915 in the US), the 433 MHz radio is parked in this environment