--- /dev/null
+*.eep
+*.elf
+*.hex
+*.o
--- /dev/null
+
+PROGRAM=blinker
+SRC=main.c
+OBJ=$(SRC:.c=.o)
+
+
+MCU=attiny25
+AVRDUDE_MCU=$(MCU)
+AVRDUDE_PROGRAMMER=usbasp
+
+CFLAGS=-Wall -Os -mmcu=$(MCU) -DUSE_LOGGING=1 -DF_CPU=1000000UL -std=gnu99
+LDFLAGS=
+AVRDUDE_FLAGS= -p$(AVRDUDE_MCU) -c $(AVRDUDE_PROGRAMMER) -B100
+
+FORMAT=ihex
+
+CC=avr-gcc
+OBJCOPY=avr-objcopy
+OBJDUMP=avr-objdump
+AVRDUDE=avrdude
+
+all: $(PROGRAM).hex $(PROGRAM).eep
+
+program: $(PROGRAM).hex $(PROGRAM).eep
+ $(AVRDUDE) $(AVRDUDE_FLAGS) -U flash:w:$(PROGRAM).hex:i -U eeprom:w:$(PROGRAM).eep:i
+
+program_flash: $(PROGRAM).hex
+ $(AVRDUDE) $(AVRDUDE_FLAGS) -U flash:w:$(PROGRAM).hex:i
+
+program_eeprom: $(PROGRAM).eep
+ $(AVRDUDE) $(AVRDUDE_FLAGS) eeprom:w:$(PROGRAM).eep:i
+
+dump_eeprom:
+ $(AVRDUDE) $(AVRDUDE_FLAGS) -U eeprom:r:eeprom.raw:r
+ od -tx1 eeprom.raw
+
+objdump: $(PROGRAM).elf
+ $(OBJDUMP) --disassemble $<
+
+.PRECIOUS : $(OBJ) $(PROGRAM).elf
+
+%.hex: %.elf
+ $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
+
+%.eep: %.elf
+ $(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+ --change-section-lma .eeprom=0 -O $(FORMAT) $< $@
+
+%.elf: $(OBJ)
+ $(CC) $(CFLAGS) $(OBJ) -o $@ $(LDFLAGS)
+
+%.o: %.c lights.h Makefile
+ $(CC) -c $(CFLAGS) $< -o $@
+
+%.s: %.c lights.h Makefile
+ $(CC) -S -c $(CFLAGS) $< -o $@
+
+%.o: %.S
+ $(CC) -c $(CFLAGS) $< -o $@
+
+clean:
+ rm -f $(PROGRAM).hex $(PROGRAM).eep $(PROGRAM).elf *.o *.s eeprom.raw
+
+version.c:
+ ./version.pl > version.c
+
+.PHONY: all clean dump_eeprom program program_flash program_eeprom objdump version.c
+
--- /dev/null
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/sleep.h>
+#include <avr/power.h>
+
+/*
+ * Overview:
+ * three LEDs:
+ * PB1/OC1A yellow
+ * PB2 yellow
+ * PB4/OC1B red
+ */
+
+static void init()
+{
+ DDRB |= _BV(PB1) | _BV(PB2) | _BV(PB4);
+
+ // PWM setup, use T/C 1
+ TCCR1 = _BV(CS10) // clock at CLK/1
+ | _BV(PWM1A) // OCR1A in PWM mode
+ | _BV(COM1A1); // clear on compare match
+ GTCCR = _BV(PWM1B) // OCR1B in PWM mode
+ | _BV(COM1B1); // clear on compare match)
+
+ OCR1C = 255;
+ OCR1A = 0;
+ OCR1B = 0;
+}
+
+
+static unsigned char levels[] = {
+ 0, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 255
+};
+#define N_LEVELS (sizeof(levels)/sizeof(levels[0]))
+
+static void led_set(unsigned char led, unsigned char val)
+{
+ switch (led) {
+ case 0:
+ OCR1A = val < N_LEVELS ? levels[val] : levels[N_LEVELS-1];
+ break;
+ case 1:
+ if (val) {
+ PORTB |= _BV(PB2);
+ } else {
+ PORTB &= ~_BV(PB2);
+ }
+ break;
+ case 2:
+ OCR1B = val < N_LEVELS ? levels[val] : levels[N_LEVELS-1];
+ break;
+ }
+}
+
+static unsigned char rand[] = {
+193, 33, 133, 97, 139, 225, 40, 105, 110, 238, 57, 250, 26, 221, 166, 247, 138, 23, 107, 122, 154, 33, 201, 66, 154, 78, 137, 198, 86, 232, 38, 182, 16, 198, 73, 231, 58, 114, 58, 105,
+};
+#define N_RAND (sizeof(rand)/sizeof(rand[0]))
+
+static void led0()
+{
+ static unsigned char r, l, exp;
+
+again:
+ if (l == exp) {
+ r++;
+ if (r > N_RAND-7)
+ r = 0;
+ exp = rand[r] >> 4;
+ if (exp >= N_LEVELS-4)
+ goto again;
+ }
+
+ if (l < exp) {
+ l++;
+ } else if (l > exp) {
+ l--;
+ }
+
+ led_set(0, l);
+}
+
+static void led1()
+{
+ static unsigned char r;
+ unsigned char exp;
+
+ led_set(1, 1);
+#if 0
+again:
+ r++;
+ if (r > N_RAND)
+ r = 0;
+ exp = rand[r];
+
+ led_set(1, ((exp >> 3) & 1) ^ ((exp >> 5) & 1));
+#endif
+}
+
+static void led2()
+{
+ static unsigned char r, l, exp;
+
+again:
+ if (l == exp) {
+ r++;
+ if (r > N_RAND)
+ r = 0;
+ exp = rand[r] & 0xF;
+ if (exp >= N_LEVELS)
+ goto again;
+ }
+
+ if (l < exp) {
+ l++;
+ } else if (l > exp) {
+ l--;
+ }
+
+ led_set(2, l);
+}
+
+int main(void)
+{
+ init();
+
+ while (1) {
+ led0();
+ led1();
+ led2();
+ _delay_ms(40);
+ }
+
+}
--- /dev/null
+
+PROGRAM=rgbstring
+SRC=version.c main.c logging.c serial.c
+OBJ=$(SRC:.c=.o)
+
+
+MCU=attiny45
+AVRDUDE_MCU=$(MCU)
+AVRDUDE_PROGRAMMER=usbasp
+
+CFLAGS=-Wall -Os -mmcu=$(MCU) -DUSE_LOGGING=1 -DF_CPU=8000000UL -std=gnu99
+LDFLAGS=
+AVRDUDE_FLAGS= -p$(AVRDUDE_MCU) -c $(AVRDUDE_PROGRAMMER) -B10
+
+FORMAT=ihex
+
+CC=avr-gcc
+OBJCOPY=avr-objcopy
+OBJDUMP=avr-objdump
+AVRDUDE=avrdude
+
+all: $(PROGRAM).hex $(PROGRAM).eep
+
+program: $(PROGRAM).hex $(PROGRAM).eep
+ $(AVRDUDE) $(AVRDUDE_FLAGS) -U flash:w:$(PROGRAM).hex:i -U eeprom:w:$(PROGRAM).eep:i
+
+program_flash: $(PROGRAM).hex
+ $(AVRDUDE) $(AVRDUDE_FLAGS) -U flash:w:$(PROGRAM).hex:i
+
+program_eeprom: $(PROGRAM).eep
+ $(AVRDUDE) $(AVRDUDE_FLAGS) eeprom:w:$(PROGRAM).eep:i
+
+dump_eeprom:
+ $(AVRDUDE) $(AVRDUDE_FLAGS) -U eeprom:r:eeprom.raw:r
+ od -tx1 eeprom.raw
+
+objdump: $(PROGRAM).elf
+ $(OBJDUMP) --disassemble $<
+
+.PRECIOUS : $(OBJ) $(PROGRAM).elf
+
+%.hex: %.elf
+ $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
+
+%.eep: %.elf
+ $(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+ --change-section-lma .eeprom=0 -O $(FORMAT) $< $@
+
+%.elf: $(OBJ)
+ $(CC) $(CFLAGS) $(OBJ) -o $@ $(LDFLAGS)
+
+%.o: %.c rgbstring.h Makefile
+ $(CC) -c $(CFLAGS) $< -o $@
+
+%.s: %.c rgbstring.h Makefile
+ $(CC) -S -c $(CFLAGS) $< -o $@
+
+%.o: %.S
+ $(CC) -c $(CFLAGS) $< -o $@
+
+clean:
+ rm -f $(PROGRAM).hex $(PROGRAM).eep $(PROGRAM).elf *.o *.s eeprom.raw
+
+version.c:
+ ./version.pl > version.c
+
+.PHONY: all clean dump_eeprom program program_flash program_eeprom objdump version.c
+
--- /dev/null
+
+Controller for the string of RGB LEDs
+
+CPU: ATtiny45
+
+Bill of materials:
+
+C3 10uF ceramic
+U1 ATtiny45-20SU
+
+Pin-out:
+
+PB0 header:
+ 2: Button 1
+PB1 header:
+ 2: DATA
+PB2 header:
+ 2: CLK
+PB3 header:
+ 2: Button 2
+PB4 header:
+ 2: Button 3
+
+
+
--- /dev/null
+#ifdef USE_LOGGING
+
+#include <avr/io.h>
+#include <avr/eeprom.h>
+
+#include "rgbstring.h"
+
+#define LOG_BUFFER 64
+static unsigned char log_buffer_ee[LOG_BUFFER] EEMEM;
+static unsigned char log_buffer_count;
+static unsigned char log_buffer[LOG_BUFFER];
+static unsigned char log_state EEMEM;
+/* Upper 4 bits are reset count, lower 4 bits are reset reason from MCUSR */
+static unsigned char reboot_count EEMEM = 0;
+static unsigned char can_write_eeprom = 0;
+static uint16_t flushed_end;
+
+void log_set_state(unsigned char val)
+{
+ if (can_write_eeprom)
+ eeprom_write_byte(&log_state, val);
+}
+
+void init_log()
+{
+ unsigned char r_count;
+
+ r_count = eeprom_read_byte(&reboot_count);
+ r_count >>= 4;
+
+ if (r_count < 5) {
+ r_count++;
+ eeprom_write_byte(&reboot_count,
+ (r_count << 4) | (MCUSR & 0xF));
+ MCUSR = 0;
+ can_write_eeprom = 1;
+ } else {
+ //eeprom_write_byte(&log_state, 0xFF);
+ can_write_eeprom = 0;
+ }
+
+ log_set_state(1);
+ log_buffer_count = 0;
+ flushed_end = 0;
+}
+
+void log_byte(unsigned char byte) {
+ if (log_buffer_count >= LOG_BUFFER)
+ return;
+
+ // eeprom_write_word(&log_buffer[log_buffer_count], word);
+ log_buffer[log_buffer_count++] = byte;
+
+ if (log_buffer_count == LOG_BUFFER)
+ log_flush();
+}
+
+void log_word(uint16_t word) {
+ log_byte(word & 0xFF);
+ log_byte(word >> 8);
+}
+
+void log_flush() {
+ unsigned char i;
+
+ if (!can_write_eeprom)
+ return;
+
+ for (i=flushed_end; i < log_buffer_count; i++) {
+ eeprom_write_byte(&log_buffer_ee[i],
+ log_buffer[i]);
+ }
+
+ flushed_end = i;
+
+ if (flushed_end == LOG_BUFFER)
+ log_set_state(0x42);
+}
+
+#endif
+
--- /dev/null
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+
+#include "rgbstring.h"
+
+// #define CHRISTMAS_TREE 1
+
+#define rgb_return(r, g, b) do { send_rgb((r), (g), (b)); return 1; } while(0)
+
+#define VERT_SIZE 47
+
+/* RNG from ADC noise */
+static unsigned char rand_pool[8], rand_pool_off, prev_bit, rand_pool_out;
+
+static void init_rng()
+{
+ ADCSRA |= _BV(ADEN) | _BV(ADPS2) | _BV(ADPS1); // enable, clk/64
+ ADMUX = _BV(REFS1) | _BV(MUX0) | _BV(MUX3); // 1.1V, PB5:PB5, gain 20
+ DIDR0 = _BV(ADC0D);
+ ADCSRA |= _BV(ADIE) | _BV(ADSC);
+ rand_pool_off = 0;
+ prev_bit = 0;
+}
+
+static unsigned char rand() {
+ unsigned char rv = 0;
+
+ rv = rand_pool[rand_pool_out];
+ rand_pool_out++;
+ if (rand_pool_out >= sizeof(rand_pool))
+ rand_pool_out = 0;
+
+ return rv;
+}
+
+ISR(ADC_vect) {
+ ADCSRA |= _BV(ADSC);
+ if ((rand_pool_off & 1) == 0) { // first bit of the pair
+ prev_bit = ADCW & 1;
+ rand_pool_off++;
+ } else {
+ unsigned char bit = ADCW & 1;
+ if (bit == prev_bit) { // whitening fail: try again
+ rand_pool_off--;
+ return;
+ }
+
+ if (bit) {
+ rand_pool[rand_pool_off >> 4]
+ ^= 1 << ((rand_pool_off >> 1) & 7);
+ }
+
+ rand_pool_off++;
+ if (rand_pool_off >= 16*sizeof(rand_pool))
+ rand_pool_off = 0;
+ }
+}
+
+static unsigned int slow_dim[] = {
+ 255, 27, 7, 2,
+};
+
+static void fill_color(unsigned char r, unsigned char g, unsigned char b)
+{
+ unsigned char i;
+
+ for (i = 0; i < STRIP_SIZE; i++)
+ send_rgb(r, g, b);
+
+ end_frame();
+}
+
+unsigned int state;
+
+static void do_buttons()
+{
+ static uint8_t prev_buttons = _BV(PB0) | _BV(PB3) | _BV(PB4);
+ static uint16_t prev_len = 0;
+
+ uint8_t buttons = PINB & (_BV(PB0) | _BV(PB3) | _BV(PB4));
+
+ if (prev_buttons == buttons) {
+ prev_len++;
+ return;
+ }
+
+ // was change
+ if (prev_len < 3 || (buttons != (_BV(PB0) | _BV(PB3) | _BV(PB4)))) {
+ prev_buttons = buttons;
+ prev_len = 0;
+ return;
+ }
+
+ if ((prev_buttons & _BV(PB0)) == 0) {
+ if (state)
+ state--;
+ } else if ((prev_buttons & _BV(PB3)) == 0) {
+ if (state < 5)
+ state++;
+ } else if ((prev_buttons & _BV(PB4)) == 0) {
+ state = 1;
+ }
+
+ prev_buttons = buttons;
+ prev_len = 0;
+}
+
+#define LED_MAX (2*STRIP_SIZE/5)
+#define N_COLORS 8
+#define R_BIAS(x) ((x) << 3)
+#define G_BIAS(x) ((x) >> 1)
+#define B_BIAS(x) ((x) << 1)
+
+static void do_hue()
+{
+ static unsigned char color, led_off;
+ static uint16_t jiffies;
+ unsigned char i, c0, l0;
+
+ if ((jiffies++ & 0x03f) == 0) {
+ if (++led_off >= LED_MAX) {
+ led_off = 0;
+ color++;
+ if (color >= 3*N_COLORS)
+ color = 0;
+ }
+ }
+
+ l0 = led_off;
+ c0 = color;
+
+ for (i = 0; i < STRIP_SIZE; i++) {
+ if (c0 < N_COLORS) {
+ send_rgb(R_BIAS(N_COLORS-c0), G_BIAS(c0), 0);
+ } else if (c0 < 2*N_COLORS) {
+ send_rgb(0, G_BIAS(2*N_COLORS-c0), B_BIAS(c0-N_COLORS));
+ } else {
+ send_rgb(R_BIAS(c0-2*N_COLORS), 0, B_BIAS(3*N_COLORS-c0));
+ }
+
+ if (++l0 >= LED_MAX) {
+ l0 = 0;
+ c0++;
+ if (c0 >= 3*N_COLORS)
+ c0 = 0;
+ }
+ }
+ end_frame();
+}
+
+int main(void)
+{
+
+ init_log();
+ init_rng();
+ init_serial();
+
+ _delay_ms(3000/8); // wait for a bit and then increase the CPU clock
+ CLKPR = _BV(CLKPCE);
+ CLKPR = 0;
+
+ PORTB |= _BV(PB0) | _BV(PB3) | _BV(PB4); // pull-ups for buttons
+
+ state = 0;
+
+ sei();
+
+ while (1) {
+ unsigned char i;
+
+ do_buttons();
+
+ switch (state) {
+ case 0:
+ zero_frame();
+ break;
+ case 1:
+ i = 0;
+ while (i < STRIP_SIZE) {
+ send_rgb(4, 0, 0);
+ send_rgb(4, 1, 0);
+ send_rgb(0, 2, 0);
+ send_rgb(0, 1, 1);
+ send_rgb(0, 0, 2);
+ send_rgb(4, 0, 2);
+ i += 6;
+ }
+ end_frame();
+ break;
+ case 2:
+ do_hue();
+ break;
+ case 3:
+ fill_color(16, 4, 8);
+ break;
+ case 4:
+ fill_color(96, 64, 64);
+ break;
+ case 5:
+ fill_color(255, 255, 255);
+ break;
+ default:
+ { unsigned char light;
+
+ light = slow_dim[sizeof(slow_dim)/sizeof(slow_dim[0]) - state];
+ fill_color(4*light, light, 2*light);
+ }
+ break;
+ }
+ }
+}
+
--- /dev/null
+#ifndef LIGHTS_H__
+#define LIGHTS_H__ 1
+
+#define N_PWMLED_MODES 3
+
+/* logging.c */
+#ifdef USE_LOGGING
+void init_log();
+void log_set_state(unsigned char val);
+void log_flush();
+void log_byte(unsigned char byte);
+void log_word(uint16_t word);
+#else
+void inline init_log() { }
+void inline log_set_state(unsigned char val) { }
+void inline log_flush() { }
+void inline log_byte(unsigned char byte) { }
+void inline log_word(uint16_t word) { }
+#endif
+
+/* serial.c */
+#define STRIP_SIZE 72
+void init_serial();
+void zero_frame();
+void end_frame();
+void send_rgb(unsigned char r, unsigned char g, unsigned char b);
+
+#endif /* !LIGHTS_H__ */
+
--- /dev/null
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+
+#include "rgbstring.h"
+
+void init_serial()
+{
+ PORTB &= ~(_BV(PB1) | _BV(PB2));
+ DDRB |= _BV(PB1) | _BV(PB2);
+
+#if 0
+ TCCR0A = _BV(WGM01) | _BV(WGM00);
+ TCCR0B = _BV(WGM02) | _BV(CS00);
+ OCR0A = 2;
+#endif
+
+ zero_frame();
+}
+
+static void send_byte(unsigned char b)
+{
+ unsigned char i, mask;
+
+#if 0
+ USIDR = b;
+ USISR = _BV(USIOIF);
+ USICR = _BV(USIWM0) | _BV(USICS0);
+
+ while (!(USISR & _BV(USIOIF)))
+ ;
+#endif
+
+#if 0
+ USIDR = b;
+ USISR = _BV(USIOIF);
+
+ while ( (USISR & _BV(USIOIF)) == 0 ) {
+ USICR = _BV(USIWM0) | _BV(USICS1) | _BV(USICLK);
+ USICR = _BV(USIWM0) | _BV(USICS1) | _BV(USICLK) | _BV(USITC);
+ }
+#endif
+
+#if 0
+ for (i = 0; i < 8; i++) {
+ USICR = _BV(USIWM0) | _BV(USITC);
+ USICR = _BV(USIWM0) | _BV(USITC) | _BV(USICLK);
+ }
+#endif
+
+#if 1
+ for (i = 0; i < 8; i++) {
+ PORTB &= ~_BV(PB2); // clock low
+ if (b & 0x80) // data bit on or off
+ PORTB |= _BV(PB1);
+ else
+ PORTB &= ~_BV(PB1);
+ b <<= 1;
+ PORTB |= _BV(PB2); // clock high
+ }
+#endif
+}
+
+void end_frame()
+{
+ PORTB &= ~_BV(PB2); // clock low
+ _delay_us(1000);
+}
+
+void send_rgb(unsigned char r, unsigned char g, unsigned char b)
+{
+ send_byte(r);
+ send_byte(g);
+ send_byte(b);
+}
+
+
+void zero_frame()
+{
+ unsigned char i;
+
+ for (i = 0; i < STRIP_SIZE; i++) {
+ send_rgb(0, 0, 0);
+ }
+
+ end_frame();
+}
+
--- /dev/null
+#!/usr/bin/perl -w
+
+use strict;
+use POSIX qw(strftime);
+
+my $git = `git rev-parse --short HEAD`;
+chomp $git;
+
+my $now = strftime('%Y%m%d', localtime(time));
+
+print <<EOF;
+/* DO NOT EDIT - GENERATED BY $0 */
+
+#include <avr/eeprom.h>
+
+unsigned char version[] EEMEM = {
+EOF
+
+print hex2c($git, "git revision");
+print hex2c($now, "date");
+
+print "};\n\n/* EOF - this file has not been truncated */\n\n";
+
+sub hex2c {
+ my ($data, $comment) = @_;
+
+ my $data1 = $data;
+ $data1 .= '0' if (length($data1) & 1 == 1);
+ $data1 =~ s/(..)/0x$1, /g;
+ return "\t$data1 /* $comment $data */\n";
+}
+
static unsigned char jiffies;
-// #define CHRISTMAS_TREE 1
+#define CHRISTMAS_TREE 1
#define rgb_return(r, g, b) do { send_rgb((r), (g), (b)); return 1; } while(0)
static void background(unsigned char pos)
{
#ifdef CHRISTMAS_TREE
- switch ((pos >> 4) & 3) {
- case 0: if (pos & 1) send_rgb(7, 0, 0); else send_rgb(0, 7, 0);
+ switch ((pos >> 3) & 3) {
+ //case 0: if (pos & 1) send_rgb(7, 0, 7); else send_rgb(0, 7, 5);
+ //case 0: if (pos & 1) send_rgb(0, 0, 7); else send_rgb(7, 7, 7);
+ case 0: if (pos & 1) send_rgb(0, 0, 7); else send_rgb(0, 7, 0);
break;
- case 1: if (pos & 1) send_rgb(0, 0, 7); else send_rgb(7, 7, 7);
+ case 1: if (pos & 1) send_rgb(7, 0, 7); else send_rgb(7, 0, 0);
break;
- case 2: if (pos & 1) send_rgb(7, 0, 7); else send_rgb(0, 7, 5);
+ case 2: if (pos & 1) send_rgb(7, 5, 0); else send_rgb(7, 7, 7);
break;
- case 3: if (pos & 1) send_rgb(7, 5, 0); else send_rgb(7, 7, 7);
+ case 3: if (pos & 1) send_rgb(7, 0, 0); else send_rgb(0, 7, 0);
break;
}
#else
--- /dev/null
+
+PROGRAM=lights
+# SRC=version.c main.c logging.c pwm.c adc.c pwmled.c pattern.c buttons.c \
+# control.c battery.c wdt.c
+SRC=main.c logging.c pwm.c
+OBJ=$(SRC:.c=.o)
+
+
+MCU=attiny25
+AVRDUDE_MCU=$(MCU)
+AVRDUDE_PROGRAMMER=usbasp
+
+CFLAGS=-Wall -Os -mmcu=$(MCU) -DUSE_LOGGING=1 -DF_CPU=1000000UL -std=gnu99
+LDFLAGS=
+AVRDUDE_FLAGS= -p$(AVRDUDE_MCU) -c $(AVRDUDE_PROGRAMMER) -B10
+
+FORMAT=ihex
+
+CC=avr-gcc
+OBJCOPY=avr-objcopy
+OBJDUMP=avr-objdump
+AVRDUDE=avrdude
+
+all: $(PROGRAM).hex $(PROGRAM).eep
+
+program: $(PROGRAM).hex $(PROGRAM).eep
+ $(AVRDUDE) $(AVRDUDE_FLAGS) -U flash:w:$(PROGRAM).hex:i -U eeprom:w:$(PROGRAM).eep:i
+
+program_flash: $(PROGRAM).hex
+ $(AVRDUDE) $(AVRDUDE_FLAGS) -U flash:w:$(PROGRAM).hex:i
+
+program_eeprom: $(PROGRAM).eep
+ $(AVRDUDE) $(AVRDUDE_FLAGS) eeprom:w:$(PROGRAM).eep:i
+
+dump_eeprom:
+ $(AVRDUDE) $(AVRDUDE_FLAGS) -U eeprom:r:eeprom.raw:r
+ od -tx1 eeprom.raw
+
+objdump: $(PROGRAM).elf
+ $(OBJDUMP) --disassemble $<
+
+.PRECIOUS : $(OBJ) $(PROGRAM).elf
+
+%.hex: %.elf
+ $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
+
+%.eep: %.elf
+ $(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+ --change-section-lma .eeprom=0 -O $(FORMAT) $< $@
+
+%.elf: $(OBJ)
+ $(CC) $(CFLAGS) $(OBJ) -o $@ $(LDFLAGS)
+
+%.o: %.c lights.h Makefile
+ $(CC) -c $(CFLAGS) $< -o $@
+
+%.s: %.c lights.h Makefile
+ $(CC) -S -c $(CFLAGS) $< -o $@
+
+%.o: %.S
+ $(CC) -c $(CFLAGS) $< -o $@
+
+clean:
+ rm -f $(PROGRAM).hex $(PROGRAM).eep $(PROGRAM).elf *.o *.s eeprom.raw
+
+version.c:
+ ./version.pl > version.c
+
+.PHONY: all clean dump_eeprom program program_flash program_eeprom objdump version.c
+
--- /dev/null
+#ifndef LIGHTS_H__
+#define LIGHTS_H__ 1
+
+#define N_PWMLED_MODES 4
+
+/* logging.c */
+#ifdef USE_LOGGING
+void init_log();
+void log_set_state(unsigned char val);
+void log_flush();
+void log_byte(unsigned char byte);
+void log_word(uint16_t word);
+#else
+void inline init_log() { }
+void inline log_set_state(unsigned char val) { }
+void inline log_flush() { }
+void inline log_byte(unsigned char byte) { }
+void inline log_word(uint16_t word) { }
+#endif
+
+/* adc.c */
+#define PWMLED_ADC_SHIFT 1 /* 1<<1 measurements per single callback */
+extern volatile unsigned char need_battery_adc;
+extern volatile unsigned char need_pwmled_adc;
+extern volatile unsigned char adc_enabled;
+void init_adc();
+void susp_adc();
+void start_next_adc();
+
+/* pwm.c */
+#define PWM_MAX 0xFF
+extern volatile unsigned char pwm_enabled;
+void init_pwm();
+void susp_pwm();
+void pwm_off();
+void pwm_set(uint8_t stride);
+
+/* pwmled.c */
+void init_pwmled();
+void pwmled_adc(uint16_t adcval);
+void pwmled_set_target(unsigned char mode);
+void pwmled_on_off(unsigned char on);
+
+/* pattern.c */
+void init_pattern();
+void patterns_next_tick();
+void led_set_pattern(unsigned char led, unsigned char bits_len,
+ unsigned char bits_start, unsigned char *data);
+void led_set_number_pattern(unsigned char led,
+ unsigned char num, unsigned char inv);
+void pattern_reload();
+
+/* buttons.c */
+void init_buttons();
+void susp_buttons();
+void timer_check_buttons();
+unsigned char buttons_wait_for_release();
+void status_led_on_off(unsigned char on);
+
+/* battery.c */
+void battery_adc();
+void init_battery();
+unsigned char battery_gauge();
+
+/* control.c */
+void init_control();
+void long_press_start();
+void long_press();
+void short_press();
+void brake_on();
+void brake_off();
+void pwmled_pattern_select(unsigned char led);
+void status_led_pattern_select(unsigned char led);
+#define ERR_BATTERY 1
+#define ERR_PWMLED 2
+void set_error(unsigned char err);
+
+/* wdt.c */
+extern volatile uint16_t jiffies;
+void init_wdt();
+void susp_wdt();
+
+/* main.c */
+void power_down();
+
+#endif /* !LIGHTS_H__ */
+
--- /dev/null
+#ifdef USE_LOGGING
+
+#include <avr/io.h>
+#include <avr/eeprom.h>
+
+#include "lights.h"
+
+#define LOG_BUFFER 32
+static unsigned char log_buffer_ee[LOG_BUFFER] EEMEM;
+static unsigned char log_buffer_count;
+static unsigned char log_buffer[LOG_BUFFER];
+static unsigned char log_state EEMEM;
+/* Upper 4 bits are reset count, lower 4 bits are reset reason from MCUSR */
+static unsigned char reboot_count EEMEM = 0;
+static unsigned char can_write_eeprom = 0;
+static uint16_t flushed_end;
+
+void log_set_state(unsigned char val)
+{
+ if (can_write_eeprom)
+ eeprom_write_byte(&log_state, val);
+}
+
+void init_log()
+{
+ unsigned char r_count;
+
+ r_count = eeprom_read_byte(&reboot_count);
+ r_count >>= 4;
+
+ if (r_count < 5) {
+ r_count++;
+ eeprom_write_byte(&reboot_count,
+ (r_count << 4) | (MCUSR & 0xF));
+ MCUSR = 0;
+ can_write_eeprom = 1;
+ } else {
+ //eeprom_write_byte(&log_state, 0xFF);
+ can_write_eeprom = 0;
+ }
+
+ log_set_state(1);
+ log_buffer_count = 0;
+ flushed_end = 0;
+}
+
+void log_byte(unsigned char byte) {
+ if (log_buffer_count >= LOG_BUFFER)
+ return;
+
+ // eeprom_write_word(&log_buffer[log_buffer_count], word);
+ log_buffer[log_buffer_count++] = byte;
+
+ if (log_buffer_count == LOG_BUFFER)
+ log_flush();
+}
+
+void log_word(uint16_t word) {
+ log_byte(word & 0xFF);
+ log_byte(word >> 8);
+}
+
+void log_flush() {
+ unsigned char i;
+
+ if (!can_write_eeprom)
+ return;
+
+ for (i=flushed_end; i < log_buffer_count; i++) {
+ eeprom_write_byte(&log_buffer_ee[i],
+ log_buffer[i]);
+ }
+
+ flushed_end = i;
+
+ if (flushed_end == LOG_BUFFER)
+ log_set_state(0x42);
+}
+
+#endif
+
--- /dev/null
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/sleep.h>
+#include <avr/interrupt.h>
+#include <avr/power.h>
+#include <avr/wdt.h>
+
+#include "lights.h"
+
+#if 0
+static void hw_setup()
+{
+ power_all_disable();
+
+// init_battery();
+ init_pwm();
+// init_adc();
+// init_wdt();
+//
+// init_buttons();
+
+// init_pwmled();
+// init_pattern();
+// init_control();
+
+// set_sleep_mode(SLEEP_MODE_IDLE);
+}
+
+static void hw_suspend()
+{
+ susp_pwm();
+ susp_adc();
+ susp_wdt();
+
+ susp_buttons();
+
+ power_all_disable();
+}
+
+void power_down()
+{
+ hw_suspend();
+
+ do {
+ // G'night
+ set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+ sleep_enable();
+ sleep_bod_disable();
+ sei();
+ sleep_cpu();
+
+ // G'morning
+ cli();
+ sleep_disable();
+
+ // allow wakeup by long button-press only
+ } while (!buttons_wait_for_release());
+
+ // ok, so I will wake up
+ hw_setup();
+}
+#endif
+
+
+uint16_t read_adc_sync()
+{
+ uint16_t rv;
+
+ ADCSRA |= _BV(ADSC); // start the conversion
+
+ // wait for the conversion to finish
+ while((ADCSRA & _BV(ADIF)) == 0)
+ ;
+
+ rv = ADCW;
+ ADCSRA |= _BV(ADIF); // clear the IRQ flag
+
+ return rv;
+}
+
+void init_adc()
+{
+ power_adc_enable();
+ ACSR |= _BV(ACD); // but disable the analog comparator
+
+ ADCSRA = _BV(ADEN) // enable
+ // | _BV(ADPS1) | _BV(ADPS0) // CLK/8 = 125 kHz
+ | _BV(ADPS2) // CLK/16 = 62.5 kHz
+ ;
+
+ // Disable digital input on all bits used by ADC
+ DIDR0 = _BV(ADC3D) | _BV(ADC2D);
+
+ ADMUX = _BV(REFS1) | _BV(MUX1) | _BV(MUX0);
+
+ /* Do first conversion and drop the result */
+ read_adc_sync();
+
+ // ADCSRA |= _BV(ADIE); // enable IRQ
+}
+
+int main(void)
+{
+ uint16_t a, p, c, target;
+ int32_t sum;
+ uint8_t micro;
+ init_log();
+
+ log_set_state(3);
+
+ init_pwm();
+ init_adc();
+ // init_pwmled();
+
+ pwm_set(1);
+ // setup_mux(0);
+ // pwmled_on_off(1);
+ // pwmled_set_target(1);
+
+ sum = 0;
+ c = 0;
+ micro = 0;
+ sei();
+
+ target = 0xf0;
+#if 0
+ while(1) {
+ unsigned char p;
+ for (p = 0xd4; p <= 0xd5; p+= 0x1) {
+ unsigned char i, j;
+ uint16_t sum;
+
+ pwm_set(p);
+
+ for (j = 0; j < 12; j++) {
+ sum = 0;
+ for (i = 0; i < 2; i++) {
+ sum += read_adc_sync();
+ }
+ log_byte(sum);
+ for (i = 0; i < 14; i++) {
+ sum += read_adc_sync();
+ }
+ }
+ log_flush();
+ }
+ }
+#endif
+ while (1) {
+ sum += target - read_adc_sync() - (sum >> 7);
+ micro++;
+ if (micro > 7)
+ micro = 0;
+
+ p = ((sum >> 4) + micro) >> 3;
+ if (p > 0xd8)
+ p = 0xd8;
+ pwm_set(p);
+ if (++c > 200) {
+ log_byte(p);
+ log_flush();
+ c = 0;
+ }
+ }
+
+ p = a = c = 0;
+ while (1) {
+ uint16_t i;
+ for (i = 0; i < 25; i++) {
+ uint16_t val;
+ val = read_adc_sync();
+ a += val - (a >> 5);
+ }
+
+ if (a < (42 << 5) && p < 250) {
+ p++;
+ } else if (p > 1 && a > (38 << 5)) {
+ p--;
+ }
+ pwm_set(p);
+ if (++c > 1000) {
+ log_byte(0xbb);
+ // log_word(read_adc_sync());
+ log_word(a);
+ log_word(p);
+ log_flush();
+ c = 0;
+ }
+ }
+
+ while(1) {
+ uint16_t i, t;
+ for (t = 0; t < 3; t++) {
+ pwmled_set_target(t);
+ for (i = 0; i < 1000; i++) {
+ need_pwmled_adc = 1;
+ while (need_pwmled_adc == 1)
+ ;
+ }
+ }
+ }
+
+#if 0
+ hw_setup();
+ power_down();
+
+#if 1
+ while (1) {
+ cli();
+ if (pwm_enabled) {
+ set_sleep_mode(SLEEP_MODE_IDLE);
+ } else if (adc_enabled) {
+ set_sleep_mode(SLEEP_MODE_ADC);
+ } else {
+ set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+ }
+
+ sleep_enable();
+ // keep BOD active, no sleep_bod_disable();
+ sei();
+ sleep_cpu();
+ sleep_disable();
+ }
+#endif
+
+#if 0
+ DDRB |= _BV(PB2);
+ while (1) {
+ PORTB |= _BV( PB2 );
+ _delay_ms(200);
+ PORTB &=~ _BV( PB2 );
+ _delay_ms(200);
+ }
+#endif
+#endif
+}
--- /dev/null
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/power.h>
+#include <util/delay.h>
+#include <util/atomic.h>
+
+#include "lights.h"
+
+/*
+ * Single PWM channel on OC1B (pin PB4 of Tiny45).
+ * Counts from 0 to 0xFF, without OCR1C compare.
+ */
+
+volatile unsigned char pwm_enabled;
+
+static void inline enable_pll()
+{
+ /* Async clock */
+ PLLCSR = _BV(PLLE) | _BV(LSM);
+
+ /* Synchronize to the phase lock */
+ _delay_us(100);
+ while ((PLLCSR & _BV(PLOCK)) == 0)
+ ;
+ PLLCSR |= _BV(PCKE);
+}
+
+void init_pwm()
+{
+ pwm_enabled = 0;
+ power_timer1_enable();
+
+ TCCR1 = _BV(CTC1) | _BV(CS11); // pll_clk/2
+ GTCCR = _BV(COM1B1) | _BV(PWM1B);
+
+ OCR1C = PWM_MAX;
+ OCR1B = 0; // initial stride is 0
+
+ DDRB &= ~(_BV( PB4 ));
+ PORTB &= ~_BV(PB4); // set to zero
+}
+
+void susp_pwm()
+{
+ DDRB &= ~(_BV( PB4 ));
+ PORTB &= ~(_BV( PB4 ));
+ TCCR1 = 0;
+ TIMSK = 0;
+ TIFR = 0;
+
+ PLLCSR &= ~(_BV(PLLE) | _BV(PCKE));
+}
+
+void pwm_off()
+{
+ OCR1B = 0;
+ DDRB &= ~_BV(PB4);
+
+ PLLCSR &= ~(_BV(PLLE) | _BV(PCKE));
+ power_timer1_disable();
+ pwm_enabled = 0;
+}
+
+void pwm_set(uint8_t stride)
+{
+ OCR1B = stride;
+
+ if (!pwm_enabled) {
+ power_timer1_enable();
+ enable_pll();
+ DDRB |= _BV(PB4);
+ pwm_enabled = 1;
+ }
+}
#ifndef LIGHTS_H__
#define LIGHTS_H__ 1
-#define N_PWMLED_MODES 4
+#define N_PWMLED_MODES 3
/* logging.c */
#ifdef USE_LOGGING
static uint16_t targets[N_PWMLED_MODES] = {
MA_TO_ADC( 2),
- MA_TO_ADC( 6),
- MA_TO_ADC(12),
+ MA_TO_ADC(10),
MA_TO_ADC(20),
};
https://www.fi.muni.cz/~kas/git / tinyboard.git / commitdiff