diff --git a/avr/devices/0BUILD b/avr/devices/0BUILD
index 88c2402..43c55b6 100644
--- a/avr/devices/0BUILD
+++ b/avr/devices/0BUILD
@@ -8,6 +8,7 @@
n11
n12
n14
+ n15
diff --git a/avr/devices/n15/.gitignore b/avr/devices/n15/.gitignore
new file mode 100644
index 0000000..8e0618c
--- /dev/null
+++ b/avr/devices/n15/.gitignore
@@ -0,0 +1,2 @@
+*.eep.hex
+*.obj
diff --git a/avr/devices/n15/0BUILD b/avr/devices/n15/0BUILD
new file mode 100644
index 0000000..41d1ae7
--- /dev/null
+++ b/avr/devices/n15/0BUILD
@@ -0,0 +1,52 @@
+
+
+
+
+
+
+
+ -I $(builddir)
+ -I $(srcdir)
+ -I $(topsrcdir)/avr
+ -I $(topbuilddir)/avr
+
+
+
+
+ n15_main.asm
+
+
+
+
+
+
+
+
+
+
+ -I $(builddir)
+ -I $(srcdir)
+ -I $(topsrcdir)/avr
+ -I $(topbuilddir)/avr
+
+
+
+
+ n15_boot.asm
+
+
+
+
+
+
+
+
+
+
+ n15_defs.asm
+
+
+
+
+
+
diff --git a/avr/devices/n15/n15_boot.asm b/avr/devices/n15/n15_boot.asm
new file mode 100644
index 0000000..dbdfeaf
--- /dev/null
+++ b/avr/devices/n15/n15_boot.asm
@@ -0,0 +1,127 @@
+; ***************************************************************************
+; Source file for base system node on AtTiny 84
+;
+; This is for the maintenance system (i.e. the flash loader).
+;
+; All definitions and changes should go into this file.
+; ***************************************************************************
+
+.equ clock=1000000 ; Define the clock frequency
+
+.nolist
+.include "include/tn84def.inc" ; Define device ATtiny84
+.list
+
+.include "n15_defs.asm"
+.include "defs.asm"
+
+
+
+; ***************************************************************************
+; defines
+
+; ---------------------------------------------------------------------------
+; generic
+
+.include "common/utils_wait.asm"
+.include "modules/com2/defs.asm"
+.include "modules/comproto/defs.asm"
+
+
+
+; ---------------------------------------------------------------------------
+; firmware settings
+
+.equ FIRMWARE_VERSION_MAJOR = 0
+.equ FIRMWARE_VERSION_MINOR = 0
+.equ FIRMWARE_VERSION_PATCHLEVEL = 1
+
+
+
+; ---------------------------------------------------------------------------
+; LED
+
+.equ LED_DDR = DDRA
+.equ LED_PORT = PORTA
+.equ LED_PIN = PINA
+.equ LED_PINNUM = PORTA3
+
+
+; ***************************************************************************
+; code segment
+
+.cseg
+.org 0x0000
+
+
+
+; ---------------------------------------------------------------------------
+; Reset and interrupt vectors
+; rjmp start ; Reset vector
+ rjmp main ; Reset vector
+ reti ; EXT_INT0
+ reti ; PCI0
+ reti ; PCI1
+ reti ; WATCHDOG
+ reti ; ICP1
+ reti ; OC1A
+ reti ; OC1B
+ reti ; OVF1
+ reti ; OC0A
+ reti ; OC0B
+ reti ; OVF0
+ reti ; ACI
+ reti ; ADCC
+ reti ; ERDY
+ reti ; USI_STR
+ reti ; USI_OVF
+
+
+devInfoBlock: ; 12 bytes
+devInfoManufacturer: .db 'A', 'Q', 'U', 'A'
+devInfoId: .db 'N', 0
+devInfoVersion: .db 15, 0 ; version, revision
+firmwareVersion: .db FIRMWARE_VARIANT_BOOT, FIRMWARE_VERSION_MAJOR
+ .db FIRMWARE_VERSION_MINOR, FIRMWARE_VERSION_PATCHLEVEL
+
+firmwareStart: rjmp main ; will be overwritten when flashing
+
+
+
+; ***************************************************************************
+; main code
+
+
+.org BOOTLOADER_ADDR
+
+
+main:
+ rjmp bootLoader ; this routine is in modules/flash/proto.asm
+
+
+
+
+; ***************************************************************************
+; includes
+
+.include "modules/uart_bitbang/bytelevel.asm"
+.include "modules/uart_bitbang/packetlevel.asm"
+.include "modules/com2/crc.asm"
+.include "common/crc8.asm"
+.include "common/utils_wait_fixed.asm"
+.include "common/utils_copy_from_flash.asm"
+.include "common/utils_copy_sdram.asm"
+.include "modules/flash/bootloader.asm"
+.include "modules/flash/flash.asm"
+.include "modules/flash/recv.asm"
+.include "modules/flash/send.asm"
+.include "modules/flash/wait.asm"
+.include "modules/flash/hdl_flash_start.asm"
+.include "modules/flash/hdl_flash_data.asm"
+.include "modules/flash/hdl_flash_end.asm"
+.include "modules/flash/flash_rsp.asm"
+.include "modules/flash/flash_ready.asm"
+
+
+
+
diff --git a/avr/devices/n15/n15_defs.asm b/avr/devices/n15/n15_defs.asm
new file mode 100644
index 0000000..4db6831
--- /dev/null
+++ b/avr/devices/n15/n15_defs.asm
@@ -0,0 +1,164 @@
+; ***************************************************************************
+; copyright : (C) 2023 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. *
+; ***************************************************************************
+
+
+; ***************************************************************************
+;
+; AtTiny84
+; --------
+; VCC 1 14 GND
+; PB0 2 13 PA0 REED_OUT
+; PIR PB1 3 12 PA1 COM-DATA
+; /RESET PB3 4 11 PA2 REED_IN1
+; [KEY1] PB2 5 10 PA3 LED
+; COM_ATTN PA7 6 9 PA4 TWI-SCL
+; TWI-SDA PA6 7 8 PA5 REED_IN2
+; --------
+;
+; ***************************************************************************
+
+
+
+.equ BOOTLOADER_ADDR = 0xd00
+
+.equ FIRMWARE_VARIANT_BOOT = 0
+.equ FIRMWARE_VARIANT_TEMP_WINDOW = 1
+
+
+
+; ---------------------------------------------------------------------------
+; LED module
+
+.equ LED_SIMPLE_ONTIME = 2
+.equ LED_SIMPLE_OFFTIME = 30
+.equ LED_SIMPLE_DDR = DDRA
+.equ LED_SIMPLE_PORT = PORTA
+.equ LED_SIMPLE_PINNUM = PORTA3
+
+
+
+; ---------------------------------------------------------------------------
+; COM module
+
+.equ COM_BIT_LENGTH = 52000 ; 104000ns=9600, 52000ns=19200, 26000ns=38400
+.equ COM_HALFBIT_LENGTH = 26000 ; see https://de.wikipedia.org/wiki/Universal_Asynchronous_Receiver_Transmitter
+
+.equ COM_TXD_DDR = DDRA
+.equ COM_TXD_DATA = PORTA
+.equ COM_TXD_PIN = PORTA1
+
+.equ COM_RXD_DDR = DDRA
+.equ COM_RXD_INPUT = PINA
+.equ COM_RXD_OUTPUT = PORTA
+.equ COM_RXD_PIN = PORTA1
+
+.equ COM_ATTN_DDR = DDRA
+.equ COM_ATTN_INPUT = PINA
+.equ COM_ATTN_OUTPUT = PORTA
+.equ COM_ATTN_PIN = PORTA7
+
+.equ COM_IRQ_ADDR_ATTN = PCMSK0
+.equ COM_IRQ_BIT_ATTN = PCINT7 ; bit 7 in PCMSK0
+.equ COM_IRQ_GIFR_ATTN = PCIF0
+.equ COM_IRQ_GIMSK_ATTN = PCIE0
+
+
+
+; ---------------------------------------------------------------------------
+; TWI master module
+
+;.equ TWI_BIT_LENGTH = 10000 ; 100000 and 200000 works for display: 10000, 100000, 200000
+.equ TWI_BIT_LENGTH = 1 ; 10, 100, 500, 100000 and 200000 works for display: 10000, 100000, 200000
+
+.equ TWI_DDR_SCL = DDRA
+.equ TWI_PORT_SCL = PORTA
+.equ TWI_PIN_SCL = PINA
+.equ TWI_PINNUM_SCL = PORTA4
+
+.equ TWI_DDR_SDA = DDRA
+.equ TWI_PORT_SDA = PORTA
+.equ TWI_PIN_SDA = PINA
+.equ TWI_PINNUM_SDA = PORTA6
+
+
+
+; ---------------------------------------------------------------------------
+; LCD module
+
+.equ LCD_TWI_ADDRESS = 0x3c
+
+
+
+; ---------------------------------------------------------------------------
+; BMP 280
+
+.equ BMP280_ADDR = 0x76
+
+
+
+; ---------------------------------------------------------------------------
+; SI 7021
+
+.equ SI7021_ADDR = 0x40
+
+
+
+; ---------------------------------------------------------------------------
+; ADC/CNY70
+
+
+.equ CNY70_PORT_LED = PORTB
+.equ CNY70_DDR_LED = DDRB
+.equ CNY70_PINNUM_LED = PORTB1
+
+.equ CNY70_PORT_ADC = PORTA ; adc5
+.equ CNY70_DDR_ADC = DDRA
+.equ CNY70_PINNUM_ADC = PORTA5
+.equ CNY70_MUX_ADC = MUX5
+.equ CNY70_ADCSRB_ADC = ADC5D
+
+
+
+
+; ---------------------------------------------------------------------------
+; Reed
+;
+
+.equ REEDOUT1_DDR = DDRA
+.equ REEDOUT1_PORT = PORTA
+.equ REEDOUT1_PIN = PINA
+.equ REEDOUT1_PINNUM = PORTA0
+
+.equ REEDOUT2_DDR = DDRB
+.equ REEDOUT2_PORT = PORTB
+.equ REEDOUT2_PIN = PINB
+.equ REEDOUT2_PINNUM = PORTB0
+
+.equ REED1_DDR = DDRA
+.equ REED1_PORT = PORTA
+.equ REED1_PIN = PINA
+.equ REED1_PINNUM = PORTA2
+
+.equ REED2_DDR = DDRA
+.equ REED2_PORT = PORTA
+.equ REED2_PIN = PINA
+.equ REED2_PINNUM = PORTA5
+
+
+; ---------------------------------------------------------------------------
+; 1-Wire Master
+;
+
+.equ OWI_DDR = DDRB
+.equ OWI_PORTOUT = PORTB
+.equ OWI_PORTIN = PINB
+.equ OWI_PINNUM = PORTB2
+
+
+
diff --git a/avr/devices/n15/n15_main.asm b/avr/devices/n15/n15_main.asm
new file mode 100644
index 0000000..dfa0124
--- /dev/null
+++ b/avr/devices/n15/n15_main.asm
@@ -0,0 +1,482 @@
+; ***************************************************************************
+; 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 temperature sensor node on AtTiny 84
+;
+; This is for the full system (i.e. not the boot loader).
+;
+; All definitions and changes should go into this file.
+;
+;
+; ***************************************************************************
+
+
+.equ clock=1000000 ; Define the clock frequency
+;.equ clock=8000000 ; Define the clock frequency
+
+
+
+.nolist
+.include "include/tn84def.inc" ; Define device ATtiny84
+.list
+
+.include "n15_defs.asm"
+.include "defs.asm"
+
+
+
+; ***************************************************************************
+; defines
+
+; ---------------------------------------------------------------------------
+; generic
+
+
+.include "common/utils_wait.asm"
+
+
+; ---------------------------------------------------------------------------
+; 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
+#define MODULES_LED_SIMPLE
+#define MODULES_TWI_MASTER
+;#define MODULES_LCD
+#define LCD_MINIMAL_FONT
+#define MODULES_SI7021
+#define MODULES_STATS
+;#define MODULES_CNY70
+#define MODULES_REED
+;#define MODULES_OWI_MASTER
+;#define MODULES_DS18B20
+
+
+; ---------------------------------------------------------------------------
+; defines for values
+
+.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
+
+
+
+; ***************************************************************************
+; code segment
+
+.cseg
+.org 000000
+
+
+
+; ---------------------------------------------------------------------------
+; Reset and interrupt vectors (will be removed as soon as we can flash data over COM)
+
+; rjmp main ; Reset vector
+ rjmp BOOTLOADER_ADDR ; Reset vector ; use this for flashed system
+ reti ; EXT_INT0
+ rjmp uartBitbangIsrPcint0 ; PCI0
+ reti ; PCI1
+ reti ; WATCHDOG
+ reti ; ICP1
+ reti ; OC1A
+ reti ; OC1B
+ reti ; OVF1
+ rjmp baseTimerIrqOC0A ; OC0A
+ reti ; OC0B
+ reti ; OVF0
+ reti ; ACI
+ reti ; ADCC
+ reti ; ERDY
+ reti ; USI_STR
+ reti ; USI_OVF
+
+
+devInfoBlock: ; 12 bytes
+devInfoManufacturer: .db 'A', 'Q', 'U', 'A'
+devInfoId: .db 'N', 0
+devInfoVersion: .db 15, 0 ; version, revision
+firmwareVersion: .db FIRMWARE_VARIANT_TEMP_WINDOW, 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
+.include "modules/led/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"
+ .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"
+ .include "modules/comproto/msg_recvstats.asm"
+ .include "modules/comproto/msg_sendstats.asm"
+ .include "modules/comproto/msg_sysstats.asm"
+ .include "modules/comproto/msg_memstats.asm"
+ .include "modules/comproto/msg_pong.asm"
+ .include "modules/comproto/msg_value.asm"
+ .include "modules/comproto/msg_device.asm"
+ .include "modules/comproto/msg_reboot.asm"
+ #endif
+ #ifdef MODULES_LCD
+ .include "modules/com2/screen.asm"
+ .include "modules/comproto/screen.asm"
+ #endif
+#endif
+#ifdef MODULES_TWI_MASTER
+ .include "modules/twimaster/main.asm"
+#endif
+#ifdef MODULES_OWI_MASTER
+ .include "modules/owimaster/main.asm"
+#endif
+#ifdef MODULES_LCD
+ .include "modules/lcd/main.asm"
+#endif
+#ifdef MODULES_SI7021
+ .include "modules/si7021/main.asm"
+#endif
+#ifdef MODULES_DS18B20
+ .include "modules/ds18b20/main.asm"
+#endif
+#ifdef MODULES_STATS
+ .include "modules/stats/main.asm"
+#endif
+#ifdef MODULES_CNY70
+ .include "modules/cny70/main.asm"
+#endif
+#ifdef MODULES_REED
+ .include "modules/reed/main.asm"
+#endif
+
+
+
+; ***************************************************************************
+; data in SRAM
+
+.dseg
+
+programRamBegin:
+#ifdef MODULES_LCD
+ screenCounter: .byte 1
+#endif
+
+programRamEnd:
+
+
+
+#ifdef MODULES_LCD
+ sramTimerWriteStats: .byte 2
+ sramTimerScreen: .byte 2
+#endif
+#ifdef MODULES_SI7021
+ sramTimerSI7021Measure: .byte 2
+ sramTimerSI7021SendTemp: .byte 2
+ sramTimerSI7021SendHumidity: .byte 2
+#endif
+#ifdef MODULES_CNY70
+ sramTimerCny70SendAdc: .byte 2
+#endif
+#ifdef MODULES_LCD
+ sramPeriodicalLcdMark: .byte 2
+#endif
+#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, 3000 ; every 5m
+#endif
+#ifdef MODULES_LCD
+; .dw sramPeriodicalLcdMark, periodicalLcdMark, 0, 20 ; every 2s
+; .dw sramTimerWriteStats, writeStats, 0, 100
+ .dw sramTimerScreen, printScreen, TIMER_FLAGS_IF_ADDR, 50 ; every 5s
+#endif
+#ifdef MODULES_SI7021
+ .dw sramTimerSI7021Measure, SI7021_OnTimer, 0, 300 ; every 30s
+ .dw sramTimerSI7021SendTemp, sendSI7021Temp, TIMER_FLAGS_IF_ADDR, 600 ; every 60s
+ .dw sramTimerSI7021SendHumidity, sendSI7021Humidity, TIMER_FLAGS_IF_ADDR, 600 ; every 60s
+#endif
+#ifdef MODULES_CNY70
+ .dw sramTimerCny70SendAdc, CNY70_OnTimer, TIMER_FLAGS_IF_ADDR, 50 ; every 5s
+#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.asm"
+
+
+
+systemSetSpeed:
+.if clock == 8000000
+ ldi r16, (1<