From d80e5cd063692bb413d12392395f2ac5b3f9d06a Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Sun, 19 Mar 2023 15:28:47 +0100
Subject: [PATCH] Disable use of serial RX pin on some boards

---
 platformio.ini | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/platformio.ini b/platformio.ini
index e69101e4..60a73847 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -1254,6 +1254,7 @@ build_flags = ${common.build_flags} ${esp32s3.build_flags} -Wno-misleading-inden
   -D WLED_RELEASE_NAME=esp32S3_8MB_M 
   -D ARDUINO_USB_MODE=1 -D ARDUINO_USB_CDC_ON_BOOT=0 -D ARDUINO_USB_MSC_ON_BOOT=0 -D ARDUINO_USB_DFU_ON_BOOT=0     ;; for Serial-to-USB chip
   ;; -D ARDUINO_USB_MODE=1 -D ARDUINO_USB_CDC_ON_BOOT=1 -D ARDUINO_USB_MSC_ON_BOOT=0 -D ARDUINO_USB_DFU_ON_BOOT=0  ;; for Hardware-CDC USB mode
+  ;; -D WLED_DISABLE_ADALIGHT     ;; disables serial protocols when using CDC USB (Serial RX will receive junk commands when RX pin is unconnected, unless its pulled down by resistor)
   -D WLED_WATCHDOG_TIMEOUT=0 -D CONFIG_ASYNC_TCP_USE_WDT=0
   ; -D U8X8_HAVE_2ND_HW_I2C ;; experimental - tells U8g2 lib that a second HW I2C unit exists
   -D WLED_DISABLE_LOXONE ; FLASH 1272 bytes
@@ -1312,6 +1313,7 @@ build_flags = ${common.build_flags} ${esp32s2.build_flags}
   -Wno-misleading-indentation -Wno-format-truncation
   -D WLED_RELEASE_NAME=esp32S2_4MB_UF2_M
   -DARDUINO_USB_CDC_ON_BOOT=1  ;; mandatory, otherwise USB does not work!!
+  -D WLED_DISABLE_ADALIGHT     ;; disables serial protocols when using CDC USB (Serial RX will receive junk commands, unless its pulled down by resistor)
   -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=0
   -D SERVERNAME='"WLED-S2"'
   -D WLED_USE_PSRAM
@@ -1365,6 +1367,7 @@ build_flags = ${common.build_flags} ${esp32c3.build_flags}
   -D WLED_RELEASE_NAME=esp32c3dev_4MB_M
   ; -D WLED_DISABLE_OTA          ;;  OTA is not possible for boards with 2MB flash only (like some Ai-Thinker ESP32-C3-12F models)
   ; -DARDUINO_USB_CDC_ON_BOOT=1  ;; enable CDC USB -> needed for debugging over serial USB
+  ; -D WLED_DISABLE_ADALIGHT     ;; to disable serial protocols when using CDC USB (Serial RX will receive junk commands, unless its pulled down by resistor)
   -DARDUINO_USB_CDC_ON_BOOT=0    ;; disable CDC USB
   -D SERVERNAME='"WLED-C3"'
   ;-D WLEDMM_WIFI_POWERON_HACK ;; use this _only_ if your device is not able to make a WiFI connection!
@@ -1506,6 +1509,7 @@ build_flags = ${esp32_4MB_M_base.build_flags}
   -D WLED_DISABLE_BROWNOUT_DET
   -D SERVERNAME='"WLED-pico32"'
   ; -D WLED_WATCHDOG_TIMEOUT=60 
+  -D WLED_DISABLE_ADALIGHT  ;; WLEDMM this board does not have a serial-to-USB chip. Better to disable serial protocols, to avoid crashes (see upstream #3128)
   ; -D WLED_DEBUG
   ; -D SR_DEBUG
   -D LEDPIN=2
@@ -1541,6 +1545,7 @@ build_flags = ${esp32_4MB_V4_S_base.build_flags}
   -D WLED_DISABLE_BROWNOUT_DET
   -D SERVERNAME='"WLED-pico32-V4"'
   -D WLED_WATCHDOG_TIMEOUT=0
+  -D WLED_DISABLE_ADALIGHT  ;; WLEDMM this board does not have a serial-to-USB chip. Better to disable serial protocols, to avoid crashes (see upstream #3128)
   ; -D WLED_WATCHDOG_TIMEOUT=60 
   ; -D WLED_DEBUG
   ; -D SR_DEBUG