whirl/fw/: skeleton test firmware (doesn't do anything useful yet)

whirl/fw/Makefile

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+#
+# Makefile - Makefile of the Whirl firmware 
+#
+# Written 2012 by Werner Almesberger
+# Copyright 2012 by Werner Almesberger
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+
+SHELL = /bin/bash
+
+NAME = whirl
+
+CFLAGS = -g -mmcu=$(CHIP) \
+	 -DBOOT_ADDR=$(BOOT_ADDR) \
+	 -Wall -Wextra -Wshadow -Werror -Wno-unused-parameter \
+	 -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes \
+	 -I../../ben-wpan/atusb/fw/include/
+
+CHIP = atmega168
+HOST = jlime
+BOOT_ADDR = 0x3800
+
+AVR_PREFIX = $(BIN_PATH) avr-
+CC = $(AVR_PREFIX)gcc
+OBJCOPY = $(AVR_PREFIX)objcopy
+#OBJDUMP = $(AVR_PREFIX)objdump
+SIZE = $(AVR_PREFIX)size
+
+OBJS = $(NAME).o $(COMMON_OBJS)
+BOOT_OBJS = boot.o $(COMMON_OBJS)
+COMMON_OBJS =
+
+# ----- Verbosity control -----------------------------------------------------
+
+CC_normal	:= $(CC)
+BUILD_normal	:=
+DEPEND_normal	:= $(CPP) $(CFLAGS) -MM -MG
+
+CC_quiet	= @echo "  CC       " $@ && $(CC_normal)
+BUILD_quiet	= @echo "  BUILD    " $@ && $(BUILD_normal)
+DEPEND_quiet	= @$(DEPEND_normal)
+
+ifeq ($(V),1)
+    CC		= $(CC_normal)
+    BUILD	= $(BUILD_normal)
+    DEPEND	= $(DEPEND_normal)
+else
+    CC		= $(CC_quiet)
+    BUILD	= $(BUILD_quiet)
+    DEPEND	= $(DEPEND_quiet)
+endif
+
+# ----- Rules -----------------------------------------------------------------
+
+.PHONY:		all clean nosecrets upload prog version.c
+.PHONY:		prog-app prog-read
+
+all:		$(NAME).bin boot.bin
+
+$(NAME).elf:	$(OBJS)
+		$(MAKE) version.o
+		$(CC) $(CFLAGS) -o $@ $(OBJS) version.o
+
+boot.elf:	$(BOOT_OBJS)
+		$(CC) $(CFLAGS) -o $@ $(BOOT_OBJS) \
+		  -Wl,--section-start=.text=$(BOOT_ADDR)
+
+%.bin:		%.elf
+		$(BUILD) $(OBJCOPY) -j .text -j .data -O binary $< $@
+		@echo "build #`cat .version`, `ls -l $@`"
+
+%.hex:		%.elf
+		$(BUILD) $(OBJCOPY) -j .text -j .data -O ihex $< $@
+		$(SIZE) $@
+
+# ----- Cleanup ---------------------------------------------------------------
+
+clean:
+		rm -f $(NAME).bin $(NAME).elf
+		rm -f $(OBJS) $(OBJS:.o=.d)
+		rm -f boot.hex boot.elf
+		rm -f $(BOOT_OBJS) $(BOOT_OBJS:.o=.d)
+		rm -f version.c version.d version.o
+
+# ----- Build version ---------------------------------------------------------
+
+version.c:
+		@if [ -f .version ]; then \
+		    v=`cat .version`; \
+		    expr $$v + 1 >.version; \
+		else \
+		    echo 0 >.version; \
+		fi
+		@[ -s .version ] || echo 0 >.version
+		@echo '/* MACHINE-GENERATED. DO NOT EDIT ! */' >version.c
+		@echo '#include "version.h"' >>version.c
+		@echo "const char *build_date = \"`date`\";" >>version.c
+		@echo "const uint16_t build_number = `cat .version`;" \
+		  >>version.c
+
+# ----- Dependencies ----------------------------------------------------------
+
+MKDEP =									\
+	$(DEPEND) $< |							\
+	  sed 								\
+	    -e 's|^$(basename $(notdir $<)).o:|$@:|'			\
+	    -e '/^\(.*:\)\? */{p;s///;s/ *\\\?$$/ /;s/  */:\n/g;H;}'	\
+	    -e '$${g;p;}'						\
+	    -e d >$(basename $@).d;					\
+	  [ "$${PIPESTATUS[*]}" = "0 0" ] ||				\
+	  { rm -f $(basename $@).d; exit 1; }
+
+%.o:            %.c
+		$(CC) $(CFLAGS) -Os -c $<
+		$(MKDEP)
+
+-include $(OBJS:.o=.d)
+
+# ----- Programming and device control ----------------------------------------
+
+upload:		$(NAME).bin boot.hex
+		scp $(NAME).bin boot.hex avrdude-antorcha.conf $(HOST):
+
+# lfuse: external clock, slow start-up
+# hfuse: 4 kB boot loader, reset into boot loader
+# lock: allow everything but SPM to the boot loader
+#       Note: when trying to program 0xef, we get back 0x2f, failing
+#	      verification. So we just program 0x2f.
+
+prog-app:
+		ssh $(HOST) avrdude -F -p $(CHIP) \
+		  -L avrdude-antorcha.conf -c nanonote_antorcha -e \
+		  -U flash:w:antorcha.bin:r
+#		  -U lfuse:w:0x60:m
+
+prog:
+		ssh $(HOST) avrdude -F -p $(CHIP) \
+		  -L avrdude-antorcha.conf -c nanonote_antorcha -e \
+		  -U flash:w:boot.hex:i \
+		  -U efuse:w:0x00:m \
+		  -U lfuse:w:0xe2:m
+#		  -U lfuse:w:0x60:m \
+#		  -U hfuse:w:0xd8:m \
+#		  -U lock:w:0x2f:m
+
+prog-read:
+		ssh $(HOST) avrdude -F -p $(CHIP) -c nanonote_antorcha \
+		  -U flash:r:mcu.bin:r

whirl/fw/boot.c

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+#include <stdint.h>
+
+#define F_CPU   8000000UL
+#include <util/delay.h>
+
+#include "io.h"
+
+
+#define	HIGH(port) \
+	(MASK(port, CARD_nPWR) | \
+	MASK(port, SW_N) | MASK(port, SW_E) | MASK(port, SW_S) | \
+	MASK(port, SW_W) | MASK(port, SW_SW))
+
+#define	OUTPUTS(port) \
+	(MASK(port, CARD_nPWR) | MASK(port, CARD_CLK) | \
+	MASK(port, LED_DS) | MASK(port, LED_LCLK) | MASK(port, LED_SCLK))
+
+
+/*
+ * @@@ For testing, connect the LED bar via the 8:10 card slot, so that it
+ * can be disconnected without soldering.
+ */
+
+#define	SCLK	CARD_DAT1
+#define	LCLK	CARD_DAT0
+#define	DS	CARD_CLK
+
+
+static void send(uint16_t pattern)
+{
+	uint8_t i;
+
+	for (i = 0; i != 16; i++) {
+		if (pattern & 0x8000)
+			SET(DS);
+		else
+			CLR(DS);
+		SET(SCLK);
+		CLR(SCLK);
+		pattern <<= 1;
+	}
+	SET(LCLK);
+	CLR(LCLK);
+}
+
+
+int main(void)
+{
+	uint16_t n = 0;
+
+	PORTB = HIGH(B);
+	PORTC = HIGH(C);
+	PORTD = HIGH(D);
+	DDRB = OUTPUTS(B);
+	DDRC = OUTPUTS(C);
+	DDRD = OUTPUTS(D);
+
+#if 0
+	PORTB = 0xff;
+	PORTC = 0xff;
+	PORTD = 0xff;
+#endif
+
+	CLR(CARD_nPWR);
+	CLR(SCLK);
+	CLR(LCLK);
+	OUT(SCLK);
+	OUT(LCLK);
+	OUT(DS);
+
+#if 0
+	while (1) {
+		SET(DS);
+		CLR(DS);
+	}
+#endif
+	while (1) {
+		send(n);
+		n++;
+		_delay_ms(100);
+	}
+}

whirl/fw/io.h

@@ -0,0 +1,66 @@
+/*
+ * fw/io.h - I/O helper macros
+ *
+ * Written 2012 by Werner Almesberger
+ * Copyright 2012 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef IO_H
+#define	IO_H
+
+#include <avr/io.h>
+
+
+#define	LED_DS		D, 1
+#define	LED_LCLK	D, 2
+#define	LED_SCLK	D, 4
+
+#define	CARD_nPWR	B, 6
+#define	CARD_DAT2	B, 2
+#define	CARD_DAT3	B, 1
+#define	CARD_CMD	B, 3
+#define	CARD_CLK	B, 0
+#define	CARD_DAT0	B, 4
+#define	CARD_DAT1	B, 5
+
+#define	SW_N		C, 3
+#define	SW_E		C, 4
+#define	SW_S		C, 0
+#define	SW_W		C, 2
+#define	SW_SW		C, 1
+
+#define	ADC_X		6
+#define	ADC_Y		7
+
+#define	__SET(port, bit)	PORT##port |= 1 << (bit)
+#define	__CLR(port, bit)	PORT##port &= ~(1 << (bit))
+#define	__OUT(port, bit)	DDR##port |= 1 << (bit)
+#define	__IN(port, bit)		DDR##port &= ~(1 << (bit))
+#define	__PIN(port, bit)	((PIN##port >> (bit)) & 1)
+
+#define	SET(...)	__SET(__VA_ARGS__)
+#define	CLR(...)	__CLR(__VA_ARGS__)
+#define	OUT(...)	__OUT(__VA_ARGS__)
+#define	IN(...)		__IN(__VA_ARGS__)
+#define	PIN(...)	__PIN(__VA_ARGS__)
+
+#define	__SEL_BB(v)	(v)
+#define	__SEL_CC(v)	(v)
+#define	__SEL_DD(v)	(v)
+
+#define	__SEL_BC(v)	(0)
+#define	__SEL_BD(v)	(0)
+#define	__SEL_CB(v)	(0)
+#define	__SEL_CD(v)	(0)
+#define	__SEL_DB(v)	(0)
+#define	__SEL_DC(v)	(0)
+
+#define	__MASK(sel, port, bit)	__SEL_##sel##port(1 << (bit))
+#define	MASK(...)	__MASK(__VA_ARGS__)
+
+#endif /* IO_H */

whirl/fw/version.h

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+/*
+ * fw/version.h - Automatically generated version string
+ *
+ * Written 2008, 2011 by Werner Almesberger
+ * Copyright 2008, 2011 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#ifndef VERSION_H
+#define VERSION_H
+
+#include <stdint.h>
+
+
+extern const char *build_date;
+extern const uint16_t build_number;
+
+#endif /* !VERSION_H */

whirl/fw/whirl.c

@@ -0,0 +1,4 @@
+int main(void)
+{
+	while (1);
+}