From c5ebf259cfb8431c6edddf31ab2070ecb8ab2ee6 Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Thu, 7 Nov 2024 00:25:35 +0100
Subject: [PATCH] HUB75: allow up to 6 panels on -S3

---
 wled00/bus_manager.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/wled00/bus_manager.cpp b/wled00/bus_manager.cpp
index f2557b27..aea8051a 100644
--- a/wled00/bus_manager.cpp
+++ b/wled00/bus_manager.cpp
@@ -600,8 +600,14 @@ BusHub75Matrix::BusHub75Matrix(BusConfig &bc) : Bus(bc.type, bc.start, bc.autoWh
   _needsRefresh = mxconfig.latch_blanking == 1;
   reversed = mxconfig.clkphase;
 
-  // How many panels we have connected, cap at sane value
-  mxconfig.chain_length = max((uint8_t) 1, min(bc.pins[0], (uint8_t) 4)); // prevent bad data preventing boot due to low memory
+  // How many panels we have connected, cap at sane value, prevent bad data preventing boot due to low memory
+  #if defined(CONFIG_IDF_TARGET_ESP32S3) && defined(BOARD_HAS_PSRAM)        // ESP32-S3: allow up to 6 panels
+  mxconfig.chain_length = max((uint8_t) 1, min(bc.pins[0], (uint8_t) 6));
+  #elif defined(CONFIG_IDF_TARGET_ESP32S2)                                  // ESP32-S2: only 2 panels due to small RAM
+  mxconfig.chain_length = max((uint8_t) 1, min(bc.pins[0], (uint8_t) 2));
+  #else                                                                     // others: up to 4 panels
+  mxconfig.chain_length = max((uint8_t) 1, min(bc.pins[0], (uint8_t) 4));
+  #endif
 
   #if defined(CONFIG_IDF_TARGET_ESP32S3) && defined(BOARD_HAS_PSRAM)
   if(bc.pins[0] > 4) {