Initial commitHEADtrunk

2 files changed, 24 insertions, 0 deletions

diff --git a/Example01/Makefile b/Example01/Makefile
new file mode 100644
index 0000000..6ad5610
--- /dev/null
+++ b/Example01/Makefile
@@ -0,0 +1,10 @@
+all: main.hex
+
+%.hex: %.elf
+	avr-objcopy -O ihex $< $@
+%.elf: %.o crtatmega3208.o
+	avr-gcc -mmcu=atmega3208 -L../toolchain/lib -o $@ $<
+%.o: %.c
+	avr-gcc -c -D__AVR_DEV_LIB_NAME__=m3208 -I../toolchain/include -mmcu=atmega3208 -O3 -o $@ $<
+crtatmega3208.o: ../toolchain/lib/crtatmega3208.o
+	cp --reflink=auto $< $@
diff --git a/Example01/main.c b/Example01/main.c
new file mode 100644
index 0000000..76a47b2
--- /dev/null
+++ b/Example01/main.c
@@ -0,0 +1,14 @@
+#define F_CPU 3333333
+#include <avr/io.h>
+#include <stdbool.h>
+
+int main(void) {
+  PORTF.DIR &= ~PIN3_bm; // button as input
+  PORTF.DIR |= PIN4_bm;  // green as output
+  PORTF.DIR |= PIN5_bm;  // red as output
+
+  while (1) {
+    bool buttonp = PORTF.IN & PIN3_bm;
+    PORTF.OUT = 1 << (buttonp ? PIN4_bp : PIN5_bp);
+  }
+}