Lednew

Makefile

@@ -197,6 +197,8 @@ CPPFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
 #CPPFLAGS += $(CSTANDARD)
 
 
+LEDDEFS  =
+
 #---------------- Assembler Options ----------------
 #  -Wa,...:   tell GCC to pass this to the assembler.
 #  -adhlns:   create listing
@@ -206,8 +208,7 @@ CPPFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
 #             files -- see avr-libc docs [FIXME: not yet described there]
 #  -listing-cont-lines: Sets the maximum number of continuation lines of hex
 #       dump that will be displayed for a given single line of source input.
-ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:%.S=$(OBJDIR)/%.lst),-gstabs,--listing-cont-lines=100
-
+ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:%.S=$(OBJDIR)/%.lst),-gstabs,--listing-cont-lines=100 $(LEDDEFS)
 
 #---------------- Library Options ----------------
 # Minimalistic printf version
@@ -636,11 +637,11 @@ clean_list :
 
 
 # Create object files directory
-$(shell mkdir $(OBJDIR) 2>/NUL)
+$(shell mkdir -p $(OBJDIR))
 
 
 # Include the dependency files.
--include $(shell mkdir .dep 2>NUL) $(wildcard .dep/*)
+-include $(shell mkdir -p .dep) $(wildcard .dep/*)
 
 
 # Listing of phony targets.

README.md

@@ -8,7 +8,23 @@ The name *nanoBoot* comes from the fact that the compiled source fits in the sma
 
 It's very likely that a few sections can be rewritten to make it even smaller, and the ultimate goal is to support EEPROM programming as well, although that would require changes to the host code.
 
-The current version (commit #[d0ea26b](https://github.com/volium/nanoBoot/commit/d0ea26bb01e764340dc8ad7b473ad98cefdb52eb)) is supported as-is in the 'hid_bootloader_loader.py' script that ships with [LUFA-151115](https://github.com/abcminiuser/lufa/releases/tag/LUFA-151115), and is exactly 506 bytes long.
+The current version (2022-02-06) is supported as-is in the 'hid_bootloader_loader.py' script that ships with [LUFA-151115](https://github.com/abcminiuser/lufa/releases/tag/LUFA-151115) or even newer one.
+
+Binary size:
+* 506 bytes (nanoBoot-generic.hex: No LED support)
+* 510 bytes (enable LED support with "LED_ACTIVE_LEVEL  1" (Leonardo, Nano, Teensy 2.0-type)
+* 512 bytes (enable LED support with "LED_ACTIVE_LEVEL  0" (Promicro-type)
+
+Upon connecting to the host via USB, this sends following information: 
+```
+usb 4-2: new full-speed USB device number ** using xhci_hcd
+usb 4-2: New USB device found, idVendor=03eb, idProduct=2067, bcdDevice= 0.01
+usb 4-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
+usb 4-2: Product: nanoBt
+hid-generic 000*:03EB:2067.0026: hiddev*,hidraw*: USB HID v1.11 Device [nanoBt] on usb-0000:0*:00.*-2/input0
+```
+
+Helper scripts to build firmware with LED supports are provided as `mk-*`.
 
 ## HW assumptions:
 

mk-all

@@ -0,0 +1,9 @@
+#!/bin/sh -ex
+# vim:se sw=2 ts=2 sts=2 et ai:
+# Script to build nanoBoot
+export PATH=${PATH}:.
+mk-generic
+mk-teensy
+mk-leonardo
+mk-promicro
+

mk-generic

@@ -0,0 +1,12 @@
+#!/bin/sh -ex
+# vim:se sw=2 ts=2 sts=2 et ai:
+# Script to build nanoBoot
+
+#Generic board w/o LED support
+DEFS="LEDDEFS="
+
+make clean
+make "$DEFS"
+mv -f nanoBoot.hex nanoBoot-generic.hex
+
+

mk-leonardo

@@ -0,0 +1,25 @@
+#!/bin/sh -ex
+# vim:se sw=2 ts=2 sts=2 et ai:
+# Script to build nanoBoot
+
+# Leonardo/Nano compatible board
+#   -- LED is ON with ATmega32u4 PIN C7 HIGH
+# #define LED_BIT           7
+# #define LED_CONF          DDRC
+# #define LED_PORT          PORTC
+# #define LED_ACTIVE_LEVEL  1
+DEFS="LEDDEFS=-DLED_ENABLED -DLED_BIT=7 -DLED_CONF=DDRC -DLED_PORT=PORTC -DLED_ACTIVE_LEVEL=1"
+
+# Pro Micro compatible board
+#   -- LED is ON with ATmega32u4 PIN B3 LOW
+# #define LED_BIT           3
+# #define LED_CONF          DDRB
+# #define LED_PORT          PORTB
+# #define LED_ACTIVE_LEVEL  0
+#DEFS="LEDDEFS=\"-DLED_ENABLED -DLED_BIT=3 -DLED_CONF=DDRB -DLED_PORT=PORTB -DLED_ACTIVE_LEVEL=0\""
+
+make clean
+make "$DEFS"
+mv -f nanoBoot.hex nanoBoot-leonardo.hex
+
+

mk-promicro

@@ -0,0 +1,24 @@
+#!/bin/sh -ex
+# vim:se sw=2 ts=2 sts=2 et ai:
+# Script to build nanoBoot
+
+# Pro Micro compatible board
+#   -- LED is ON with ATmega32u4 PIN D5 LOW
+# #define LED_BIT           5
+# #define LED_CONF          DDRD
+# #define LED_PORT          PORTD
+# #define LED_ACTIVE_LEVEL  0
+DEFS="LEDDEFS=-DLED_ENABLED -DLED_BIT=5 -DLED_CONF=DDRD -DLED_PORT=PORTD -DLED_ACTIVE_LEVEL=0"
+
+# Pro Micro compatible board
+#   -- LED is ON with ATmega32u4 PIN B3 LOW
+# #define LED_BIT           3
+# #define LED_CONF          DDRB
+# #define LED_PORT          PORTB
+# #define LED_ACTIVE_LEVEL  0
+#DEFS="LEDDEFS=-DLED_ENABLED -DLED_BIT=3 -DLED_CONF=DDRB -DLED_PORT=PORTB -DLED_ACTIVE_LEVEL=0"
+make clean
+make "$DEFS"
+mv -f nanoBoot.hex nanoBoot-promicro.hex
+
+

mk-teensy

@@ -0,0 +1,50 @@
+#!/bin/sh -ex
+# vim:se sw=2 ts=2 sts=2 et ai:
+# Script to build nanoBoot
+
+# Adafruit's Atmega32u4 Breakout Board (Product ID: 296) - Now discontinued
+# https://www.adafruit.com/product/296
+#   -- LED is ON with ATmega32u4 PIN E6 HIGH
+# #define LED_BIT           6
+# #define LED_CONF          DDRE
+# #define LED_PORT          PORTE
+# #define LED_ACTIVE_LEVEL  1
+#DEFS="LEDDEFS=-DLED_ENABLED -DLED_BIT=6 -DLED_CONF=DDRE -DLED_PORT=PORTE -DLED_ACTIVE_LEVEL=1"
+
+# Teensy 2.0 compatible board
+#   -- LED is ON with ATmega32u4 PIN D6 HIGH
+#define LED_BIT           6
+#define LED_CONF          DDRD
+#define LED_PORT          PORTD
+#define LED_ACTIVE_LEVEL  1
+DEFS="LEDDEFS=-DLED_ENABLED -DLED_BIT=6 -DLED_CONF=DDRD -DLED_PORT=PORTD -DLED_ACTIVE_LEVEL=1"
+
+# Leonardo/Nano compatible board
+#   -- LED is ON with ATmega32u4 PIN C7 HIGH
+# #define LED_BIT           7
+# #define LED_CONF          DDRC
+# #define LED_PORT          PORTC
+# #define LED_ACTIVE_LEVEL  1
+#DEFS="LEDDEFS=-DLED_ENABLED -DLED_BIT=7 -DLED_CONF=DDRC -DLED_PORT=PORTC -DLED_ACTIVE_LEVEL=1"
+
+# Pro Micro compatible board
+#   -- LED is ON with ATmega32u4 PIN D5 LOW
+# #define LED_BIT           5
+# #define LED_CONF          DDRD
+# #define LED_PORT          PORTD
+# #define LED_ACTIVE_LEVEL  0
+#DEFS="LEDDEFS=-DLED_ENABLED -DLED_BIT=5 -DLED_CONF=DDRD -DLED_PORT=PORTD -DLED_ACTIVE_LEVEL=0"
+
+# Pro Micro compatible board
+#   -- LED is ON with ATmega32u4 PIN B3 LOW
+# #define LED_BIT           3
+# #define LED_CONF          DDRB
+# #define LED_PORT          PORTB
+# #define LED_ACTIVE_LEVEL  0
+#DEFS="LEDDEFS=-DLED_ENABLED -DLED_BIT=3 -DLED_CONF=DDRB -DLED_PORT=PORTB -DLED_ACTIVE_LEVEL=0"
+
+make clean
+make "$DEFS"
+mv -f nanoBoot.hex nanoBoot-teensy.hex
+
+