Merge remote-tracking branch 'origin/master' into S3

0001-Enable-lwIP-TFTP-server-support.patch

@@ -0,0 +1,46 @@
+From 963e5981b7e9212068ee6589983f5cd0e217f7b1 Mon Sep 17 00:00:00 2001
+From: jrhoffa <robots.are.love@gmail.com>
+Date: Sun, 27 Nov 2022 18:05:45 -0800
+Subject: [PATCH] Enable lwIP TFTP server support
+
+---
+ components/lwip/CMakeLists.txt | 4 ++++
+ components/lwip/Kconfig        | 7 +++++++
+ 2 files changed, 11 insertions(+)
+
+diff --git a/components/lwip/CMakeLists.txt b/components/lwip/CMakeLists.txt
+index acd587de92..40dcb7f4f4 100644
+--- a/components/lwip/CMakeLists.txt
++++ b/components/lwip/CMakeLists.txt
+@@ -148,6 +148,10 @@ if(CONFIG_LWIP_DHCPS)
+     list(APPEND srcs "apps/dhcpserver/dhcpserver.c")
+ endif()
+ 
++if(CONFIG_LWIP_TFTPS)
++    list(APPEND srcs "lwip/src/apps/tftp/tftp_server.c")
++endif()
++
+ idf_component_register(SRCS "${srcs}"
+                     INCLUDE_DIRS "${include_dirs}"
+                     LDFRAGMENTS linker.lf
+diff --git a/components/lwip/Kconfig b/components/lwip/Kconfig
+index 57e8c2b045..5016394397 100644
+--- a/components/lwip/Kconfig
++++ b/components/lwip/Kconfig
+@@ -871,6 +871,13 @@ menu "LWIP"
+ 
+     endmenu  # LWIP RAW API
+ 
++    menu "TFTP"
++        config LWIP_TFTPS
++            bool "Enable TFTP server"
++            default n
++
++    endmenu # TFTP
++
+     menu "SNTP"
+ 
+         config LWIP_SNTP_MAX_SERVERS
+-- 
+2.25.1
+

main/main.cpp

@@ -106,7 +106,7 @@ extern "C" void app_main(void) {
     // TerminalLEDs()
     // ScreenLEDs()
     // SPI_LEDs(39);
-    // RMT_LEDs(17);
+    // RMT_LEDs(GPIO_NUM_17);
     LEDStrip *LEDs = new RMT_LEDs(GPIO_NUM_17);
     int frequency = 30;
 

main/spi_leds.cpp

@@ -54,7 +54,9 @@ SPI_LEDs::SPI_LEDs(int _gpio, int length) :
         .cs_ena_posttrans = 0, // moot
         // Datasheet implies 3.2 MHz => 1.25 us / 4
         // We can get away with 4.4_ MHz => 900 ns / 4
-        .clock_speed_hz = 3200000,
+        // HOWEVER, better implementations divide 1.25 us into thirds!
+        // Thus, 2.4 MHz has the same H times and slightly longer L times.
+        .clock_speed_hz = 2400000,
         .input_delay_ns = 0, // moot
         .spics_io_num = -1,
         .flags = 0, // Keep it MSB first