diff --git a/avr/devices/n22/0BUILD b/avr/devices/n22/0BUILD
index b7cd85f..be449f6 100644
--- a/avr/devices/n22/0BUILD
+++ b/avr/devices/n22/0BUILD
@@ -2,44 +2,9 @@
 
 <gwbuild>
 
-  <target type="AvrHexFile" name="n22_firmware" >
-
-    <includes type="avrasm" >
-      -I $(builddir)
-      -I $(srcdir)
-      -I $(topsrcdir)/avr
-      -I $(topbuilddir)/avr
-    </includes>
-
-
-    <sources type="avrasm" >
-      main.asm
-    </sources>
-
-
-  </target>
-
-
-
-  <target type="AvrHexFile" name="n22_boot" >
-
-    <includes type="avrasm" >
-      -I $(builddir)
-      -I $(srcdir)
-      -I $(topsrcdir)/avr
-      -I $(topbuilddir)/avr
-    </includes>
-
-
-    <sources type="avrasm" >
-      boot.asm
-    </sources>
-
-
-  </target>
-
-
   <subdirs>
+    boot
+    main
   </subdirs>
 
   <extradist>
@@ -50,4 +15,3 @@
 
 </gwbuild>
 
-
diff --git a/avr/devices/n22/boot/0BUILD b/avr/devices/n22/boot/0BUILD
new file mode 100644
index 0000000..068003c
--- /dev/null
+++ b/avr/devices/n22/boot/0BUILD
@@ -0,0 +1,32 @@
+<?xml?>
+
+<gwbuild>
+
+  <target type="AvrHexFile" name="n22_boot" >
+
+    <includes type="avrasm" >
+      -I $(builddir)
+      -I $(srcdir)
+      -I $(topsrcdir)/avr
+      -I $(topbuilddir)/avr
+    </includes>
+
+
+    <sources type="avrasm" >
+      boot.asm
+    </sources>
+
+
+  </target>
+
+
+  <subdirs>
+  </subdirs>
+
+  <extradist>
+  </extradist>
+  
+
+</gwbuild>
+
+
diff --git a/avr/devices/n22/boot.asm b/avr/devices/n22/boot/boot.asm
similarity index 98%
rename from avr/devices/n22/boot.asm
rename to avr/devices/n22/boot/boot.asm
index 8362245..f87b71d 100644
--- a/avr/devices/n22/boot.asm
+++ b/avr/devices/n22/boot/boot.asm
@@ -14,7 +14,7 @@
 .include "include/tn85def.inc" ; Define device ATtiny85
 .list
 
-.include "./defs.asm"
+.include "../defs.asm"
 .include "defs_all.asm"
 
 
@@ -109,6 +109,7 @@ main:
 .include "modules/flash/io.asm"
 .include "modules/flash/io_attn.asm"
 .include "modules/flash/io_bitbang.asm"
+.include "modules/flash/flashxp.asm"
 .include "modules/flash/flash1p.asm"
 .include "modules/flash/flashprocess.asm"
 .include "modules/flash/wait.asm"
diff --git a/avr/devices/n22/defs.asm b/avr/devices/n22/defs.asm
index 481ad98..e42cb38 100644
--- a/avr/devices/n22/defs.asm
+++ b/avr/devices/n22/defs.asm
@@ -39,6 +39,7 @@
 .equ LED_SIMPLE_OFFTIME = 50
 .equ LED_SIMPLE_DDR     = DDRB
 .equ LED_SIMPLE_PORT    = PORTB
+.equ LED_SIMPLE_PORTIN  = PINB
 .equ LED_SIMPLE_PINNUM  = PORTB4
 
 
diff --git a/avr/devices/n22/main.asm b/avr/devices/n22/main.asm
deleted file mode 100644
index 1fecccc..0000000
--- a/avr/devices/n22/main.asm
+++ /dev/null
@@ -1,333 +0,0 @@
-; ***************************************************************************
-; copyright   : (C) 2024 by Martin Preuss
-; email       : martin@libchipcard.de
-;
-; ***************************************************************************
-; * This file is part of the project "AqHome".                              *
-; * Please see toplevel file COPYING of that project for license details.   *
-; ***************************************************************************
-
-
-; ***************************************************************************
-; Source file for LED controller node on AtTiny 85
-;
-; This is for the full system (i.e. not the boot loader).
-; ***************************************************************************
-
-.equ clock=8000000 ; Define the clock frequency
-
-
-
-.nolist
-.include "include/tn85def.inc" ; Define device ATtiny85
-.list
-
-.include "./defs.asm"
-.include "defs_all.asm"
-.include "common/utils_wait.asm" ; wait macro
-
-
-
-; ***************************************************************************
-; defines
-
-; ---------------------------------------------------------------------------
-; firmware settings including list of modules used
-
-.equ FIRMWARE_VERSION_MAJOR       = 0
-.equ FIRMWARE_VERSION_MINOR       = 0
-.equ FIRMWARE_VERSION_PATCHLEVEL  = 1
-
-
-#define MODULES_TIMER
-#define MODULES_COM
-#define MODULES_COM_WITH_ADDR_PROTO
-#define MODULES_LED_SIMPLE
-#define MODULES_STATS
-#define MODULES_OWI_MASTER
-#define MODULES_DS18B20
-#define MODULES_SK6812
-#define MODULES_MOTION_LIGHT
-
-; #define COM_ACCEPT_ALL_DEST
-
-
-
-; ---------------------------------------------------------------------------
-; defines for modules
-
-;.equ VALUE_ID_SI7021_TEMP    = 0x01
-;.equ VALUE_ID_SI7021_HUM     = 0x02
-
-;.equ VALUE_ID_ADC            = 0x03
-;.equ VALUE_ID_REED1          = 0x04
-;.equ VALUE_ID_REED2          = 0x05
-.equ VALUE_ID_DS18B20_TEMP    = 0x06
-
-;.equ VALUE_ID_REED_CONF      = 0x81
-.equ VALUE_ID_LED_NUMLEDS    = 0x82
-.equ VALUE_ID_LED_RGBW_VALUE = 0x83
-.equ VALUE_ID_MAL_RGBW_VALUE = 0x84
-.equ VALUE_ID_MAL_ONTIME     = 0x85
-.equ VALUE_ID_MAL_SOURCE1    = 0x86
-.equ VALUE_ID_MAL_SOURCE2    = 0x87
-
-
-; ***************************************************************************
-; code segment
-
-.cseg
-.org 000000
-
-
-
-; ---------------------------------------------------------------------------
-; Reset and interrupt vectors
-
-        rjmp BOOTLOADER_ADDR ; Reset vector  ; use this for flashed system
-	reti ; EXT_INT0
-	rjmp uartBitbangIsrPcint0 ; PCI0
-	reti ; OC1A
-	reti ; OVF1
-	reti ; OVF0
-	reti ; ERDY
-	reti ; ACI
-        reti ; ADCC
-	reti ; OC1B
-        rjmp baseTimerIrqOC0A ; OC0A
-	reti ; OC0B
-	reti ; WATCHDOG
-	reti ; USI_STR
-	reti ; USI_OVF
-
-
-devInfoBlock:        ; 12 bytes
-devInfoManufacturer: .db 'A', 'Q', 'U', 'A'
-devInfoId:           .db DEVICEINFO_ID, 0
-devInfoVersion:      .db DEVICEINFO_VERSION, DEVICEINFO_REVISION             ; version, revision
-firmwareVersion:     .db FIRMWARE_VARIANT_LEDSTRIPS, FIRMWARE_VERSION_MAJOR
-                     .db FIRMWARE_VERSION_MINOR, FIRMWARE_VERSION_PATCHLEVEL
-
-firmwareStart:   rjmp main
-
-
-; ***************************************************************************
-; includes
-
-.include "common/utils.asm"
-.include "common/utils_wait_fixed.asm"
-.include "common/utils_copy_from_flash.asm"
-.include "common/utils_copy_sdram.asm"
-.include "common/crc8.asm"
-
-.include "modules/basetimer/main.asm"
-
-#ifdef MODULES_TIMER
-  .include "modules/timer/main.asm"
-#endif
-#ifdef MODULES_LED_SIMPLE
-.include "modules/led_simple/main.asm"
-#endif
-#ifdef MODULES_COM
-  .include "modules/com2/defs.asm"
-  .include "modules/com2/main.asm"
-  .include "modules/com2/buffer.asm"
-  #ifdef MODULES_STATS
-    .include "modules/comproto/msg_recvstats.asm"
-    .include "modules/comproto/msg_sendstats.asm"
-    .include "modules/comproto/msg_sysstats.asm"
-    .include "modules/comproto/msg_memstats.asm"
-  #endif
-  .include "modules/comproto/msg_pong.asm"
-  .include "modules/comproto/msg_value.asm"
-  .include "modules/comproto/msg_device.asm"
-  .include "modules/comproto/msg_reboot.asm"
-  .include "modules/uart_bitbang/defs.asm"
-  .include "modules/uart_bitbang/main.asm"
-  .include "modules/uart_bitbang/bytelevel.asm"
-  .include "modules/uart_bitbang/packetlevel.asm"
-  #ifdef MODULES_COM_WITH_ADDR_PROTO
-    .include "modules/comproto/defs.asm"
-    .include "modules/comproto/main.asm"
-    .include "modules/comproto/addr.asm"
-  #endif
-#endif
-#ifdef MODULES_STATS
-  .include "modules/stats/main.asm"
-#endif
-#ifdef MODULES_OWI_MASTER
-  .include "modules/owimaster/main.asm"
-#endif
-#ifdef MODULES_DS18B20
-  .include "modules/ds18b20/main.asm"
-#endif
-#ifdef MODULES_SK6812
-  .include "modules/sk6812/main.asm"
-#endif
-#ifdef MODULES_MOTION_LIGHT
-  .include "modules/ma_light/main.asm"
-#endif
-
-
-; ***************************************************************************
-; data in SRAM
-
-.dseg
-
-
-#ifdef MODULES_DS18B20
-  sramDs18b20Timer:            .byte 2
-  sramSendDs18b20TempTimer:    .byte 2
-#endif
-
-
-; ***************************************************************************
-; data in FLASH
-
-.cseg
-
-
-
-; ---------------------------------------------------------------------------
-; timer list
-
-
-timerList:
-;     SRAM variable/counter        routine                     flags                secs (0=don't start or restart)
-#ifdef MODULES_COM_WITH_ADDR_PROTO
-  .dw cproAddresModeTimer,         CPRO_Address_OnTimer,       0,                   0     ; (no restart)
-#endif
-#ifdef MODULES_STATS
-  .dw statsSendTimer,              Stats_Timer,                TIMER_FLAGS_IF_ADDR, 9000   ; every 15m
-#endif
-#ifdef MODULES_DS18B20
-  .dw sramDs18b20Timer,            Ds18b20_OnTimer,            0,                   300    ; every 30s
-  .dw sramSendDs18b20TempTimer,    sendDs18b20Temp,            TIMER_FLAGS_IF_ADDR, 600    ; every 60s
-#endif
-  .dw 0 ; end of list
-
-
-
-
-
-.include "main_all.asm"
-
-
-; ---------------------------------------------------------------------------
-; Called early on system startup. No arguments, no results.
-
-systemSetSpeed:
-.if clock == 1000000
-  ldi r16, (1<<CLKPCE)
-  ldi r17, (1<<CLKPS1) | (1<<CLKPS0)
-  out CLKPR, r16
-  out CLKPR, r17
-.endif
-
-.if clock == 8000000
-  ldi r16, (1<<CLKPCE)
-  ldi r17, 0
-  out CLKPR, r16
-  out CLKPR, r17
-.endif
-  ret
-
-
-
-; ---------------------------------------------------------------------------
-; Called just before rebooting to bootloader. No arguments, no results.
-
-systemSetBootSpeed:
-  ldi r16, (1<<CLKPCE)
-  ldi r17, (1<<CLKPS1) | (1<<CLKPS0)
-  out CLKPR, r16
-  out CLKPR, r17
-  ret
-
-
-
-; ---------------------------------------------------------------------------
-; Called on first time run, i.e. on system start. No arguments, no results.
-
-onSystemStart:
-  ret
-
-
-#ifdef MODULES_DS18B20
-sendDs18b20Temp:
-  rcall Ds18b20_SendTemp
-  brcs sendDs18b20Temp_okay
-  ; set timer to 1s to retry later
-  ldi xl, LOW(sramSendDs18b20TempTimer)
-  ldi xh, HIGH(sramSendDs18b20TempTimer)
-  rjmp Timer_SetValueTo1s
-sendDs18b20Temp_okay:
-  ret
-#endif
-
-
-
-; ---------------------------------------------------------------------------
-; Called every 100ms. Add your routine calls here. No arguments, no results.
-
-onEvery100ms:
-#ifdef MODULES_LED_SIMPLE
-  rcall LedSimple_Every100ms
-#endif
-
-#ifdef MODULES_REED
-  rcall REED_Every100ms
-#endif
-
-#ifdef MODULES_MOTION_LIGHT
-  rcall MotionLight_Every100ms
-#endif
-
-  ret
-
-
-
-; ---------------------------------------------------------------------------
-; @routine onPacketReceived:
-;
-; Called after a packet was received via COM module. Add your routine calls here.
-;
-; The packet will be released in any case after return from this call.
-;
-; @return CFLAG set if message handled, cleared otherwise
-; @param X  pointer to received buffer
-; @clobbers all
-
-onPacketReceived:
-  ; get msg code
-  adiw xh:xl, COM2_MSG_OFFS_CMD
-  ld r16, x
-  sbiw xh:xl, COM2_MSG_OFFS_CMD
-
-#ifdef MODULES_MOTION_LIGHT
-  rcall MotionLight_OnPacketReceived
-  brcs onPacketReceived_end
-#endif
-
-#ifdef MODULES_SK6812
-  rcall SK6812_OnPacketReceived
-  brcs onPacketReceived_end
-#endif
-
-#ifdef MODULES_REED
-  rcall REED_OnPacketReceived
-  brcs onPacketReceived_end
-#endif
-
-#ifdef MODULES_COM
-  rcall CPRO_OnPacketReceived
-  brcs onPacketReceived_end
-#endif
-
-  clc
-onPacketReceived_end:
-  ret
-; @end
-
-
-
diff --git a/avr/devices/n22/main/0BUILD b/avr/devices/n22/main/0BUILD
new file mode 100644
index 0000000..38ed80d
--- /dev/null
+++ b/avr/devices/n22/main/0BUILD
@@ -0,0 +1,33 @@
+<?xml?>
+
+<gwbuild>
+
+  <target type="AvrHexFile" name="n22_firmware" >
+
+    <includes type="avrasm" >
+      -I $(builddir)
+      -I $(srcdir)
+      -I $(topsrcdir)/avr
+      -I $(topbuilddir)/avr
+    </includes>
+
+
+    <sources type="avrasm" >
+      main.asm
+    </sources>
+
+
+  </target>
+
+
+
+  <subdirs>
+  </subdirs>
+
+  <extradist>
+  </extradist>
+  
+
+</gwbuild>
+
+
diff --git a/avr/devices/n22/main/main.asm b/avr/devices/n22/main/main.asm
new file mode 100644
index 0000000..fb4534b
--- /dev/null
+++ b/avr/devices/n22/main/main.asm
@@ -0,0 +1,186 @@
+; ***************************************************************************
+; copyright   : (C) 2024 by Martin Preuss
+; email       : martin@libchipcard.de
+;
+; ***************************************************************************
+; * This file is part of the project "AqHome".                              *
+; * Please see toplevel file COPYING of that project for license details.   *
+; ***************************************************************************
+
+
+; ***************************************************************************
+; Source file for LED controller node on AtTiny 85
+;
+; This is for the full system (i.e. not the boot loader).
+; ***************************************************************************
+
+.equ clock=8000000 ; Define the clock frequency
+
+
+
+.nolist
+.include "include/tn85def.inc" ; Define device ATtiny85
+.list
+
+.include "../defs.asm"
+;.include "./data.asm"
+
+.include "devices/all/defs.asm"
+.include "common/utils_wait.asm"
+
+
+
+; ***************************************************************************
+; defines
+
+; ---------------------------------------------------------------------------
+; generic
+
+.equ NET_BUFFERS_NUM            = 6
+.equ NET_BUFFERS_SIZE           = 32
+
+
+
+; ---------------------------------------------------------------------------
+; firmware settings including list of modules used
+
+.equ FIRMWARE_VERSION_MAJOR       = 0
+.equ FIRMWARE_VERSION_MINOR       = 0
+.equ FIRMWARE_VERSION_PATCHLEVEL  = 1
+
+
+#define MODULES_CLOCK
+#define MODULES_LED_SIMPLE
+#define MODULES_NETWORK
+#define MODULES_UART_BITBANG
+#define MODULES_OWI_MASTER
+#define MODULES_DS18B20
+#define MODULES_SK6812
+;#define MODULES_MOTION_LIGHT
+
+#define APPS_NETWORK
+#define APPS_REPORTSENSORS
+#define APPS_STATS
+#define APPS_MA_LIGHT
+
+
+
+; ---------------------------------------------------------------------------
+; defines for modules
+
+;.equ VALUE_ID_SI7021_TEMP    = 0x01
+;.equ VALUE_ID_SI7021_HUM     = 0x02
+
+;.equ VALUE_ID_ADC            = 0x03
+;.equ VALUE_ID_REED1          = 0x04
+;.equ VALUE_ID_REED2          = 0x05
+.equ VALUE_ID_DS18B20_TEMP    = 0x06
+
+;.equ VALUE_ID_REED_CONF      = 0x81
+.equ VALUE_ID_LED_NUMLEDS    = 0x82
+.equ VALUE_ID_LED_RGBW_VALUE = 0x83
+.equ VALUE_ID_MAL_RGBW_VALUE = 0x84
+.equ VALUE_ID_MAL_ONTIME     = 0x85
+.equ VALUE_ID_MAL_SOURCE1    = 0x86
+.equ VALUE_ID_MAL_SOURCE2    = 0x87
+
+
+; ***************************************************************************
+; code segment
+
+.cseg
+.org 000000
+
+
+
+; ---------------------------------------------------------------------------
+; Reset and interrupt vectors
+
+        rjmp BOOTLOADER_ADDR ; Reset vector  ; use this for flashed system
+	reti ; EXT_INT0
+	rjmp UART_BitBang_PcintIsr ; PCI0
+	reti ; OC1A
+	reti ; OVF1
+	reti ; OVF0
+	reti ; ERDY
+	reti ; ACI
+        reti ; ADCC
+	reti ; OC1B
+        rjmp baseTimerIrqOC0A ; OC0A
+	reti ; OC0B
+	reti ; WATCHDOG
+	reti ; USI_STR
+	reti ; USI_OVF
+
+
+devInfoBlock:        ; 12 bytes
+devInfoManufacturer: .db 'A', 'Q', 'U', 'A'
+devInfoId:           .db DEVICEINFO_ID, 0
+devInfoVersion:      .db DEVICEINFO_VERSION, DEVICEINFO_REVISION             ; version, revision
+firmwareVersion:     .db FIRMWARE_VARIANT_LEDSTRIPS, FIRMWARE_VERSION_MAJOR
+                     .db FIRMWARE_VERSION_MINOR, FIRMWARE_VERSION_PATCHLEVEL
+
+; ---------------------------------------------------------------------------
+; @routine firmwareStart @global
+
+firmwareStart:
+  rjmp main
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine onSystemStart
+
+onSystemStart:
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine onMessageReceived
+;
+; Called on every message received
+
+onMessageReceived:
+  clc
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine onEvery100ms
+;
+; Called every 100ms. Add your routine calls here. No arguments, no results.
+
+onEvery100ms:
+onEverySecond:
+onEveryMinute:
+onEveryHour:
+onEveryDay:
+  ret
+; @end
+
+
+
+
+
+; ***************************************************************************
+; includes
+
+.include "devices/all/hw_tn85.asm"
+.include "devices/all/includes.asm"
+.include "common/debug.asm"
+
+
+
+; ---------------------------------------------------------------------------
+; defines for network interface
+
+.equ netInterfaceData = uart_bitbang_iface
+
+
+
+