Waking up Ogion using ATtiny

diff --git a/tenar/Makefile b/tenar/Makefile
new file mode 100644 (file)
index 0000000..a557ff1
--- /dev/null
+++ b/tenar/Makefile
@@ -0,0 +1,22 @@
+all: tenar.flash
+
+GCF=-Os -mmcu=attiny13 -std=gnu99 -Wall -W -Wno-parentheses
+
+%.flash: %.hex
+       scp $< abacus:avr/tmp/
+       ssh root@abacus 'cd ~mj/avr/bin && ./avrdude -p t13 -c dapa -v -U flash:w:../tmp/$<:i'
+
+%.hex: %.exe
+       avr-objcopy -j .text -j .data -O ihex $< $@
+
+%.exe: %.c
+       avr-gcc $< -o $@ $(GCF)
+
+%.s: %.c
+       avr-gcc $< -o $@ $(GCF) -S
+
+clean:
+       rm -f *~ *.o *.s *.exe *.hex
+
+.SECONDARY:
+.PHONY: all clean

diff --git a/tenar/tenar.c b/tenar/tenar.c
new file mode 100644 (file)
index 0000000..d69c0ad
--- /dev/null
+++ b/tenar/tenar.c
@@ -0,0 +1,58 @@
+/*
+ *     Waking Up Ogion
+ *
+ *     (c) 2013 Martin Mares <mj@ucw.cz>
+ */
+
+/*
+ *     Pin assignment (component side view; "*" marks inverted signals)
+ *
+ *                     +-------------------+
+ *                     | RESET*        VCC |
+ *     output RESET*   | PB3           SCK |
+ *     diagnostic LED* | PB4          MISO |
+ *                     | GND          MOSI |
+ *                     +-------------------+
+ */
+
+#define F_CPU 1200000UL
+
+#include <avr/io.h>
+#include <avr/sleep.h>
+#include <util/delay.h>
+
+typedef uint8_t byte;
+
+#define B(x) (1U<<(x))
+
+static void sleep(uint16_t millisec)
+{
+       while (millisec) {
+               _delay_ms(1);
+               millisec--;
+       }
+}
+
+int main(void)
+{
+       PORTB &= ~B(PB3);               // PB3: tri-stated
+       DDRB |= B(PB4);                 // PB4: output
+
+       for (byte i=0; i<5; i++) {
+               PORTB &= ~B(PB4);
+               sleep(100);
+               PORTB |= B(PB4);
+               sleep(900);
+       }
+
+       PORTB &= ~B(PB4);
+       DDRB |= B(PB3);                 // PB3: output 0
+       sleep(300);
+       DDRB &= ~B(PB3);                // PB3: tri-state
+       PORTB |= B(PB4);
+
+       for (;;) {
+               set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+               sleep_mode();
+       }
+}