From a18aefd421605d6ab3beae90bd82da5fe8afc15d Mon Sep 17 00:00:00 2001
From: Julia Wichmann <Julia.Wichmann@s2017.tu-chemnitz.de>
Date: Fri, 1 Nov 2019 14:11:39 +0100
Subject: [PATCH] copy leds.c+makefile to speedyleds
---
speedyleds/Makefile | 8 ++++++++
speedyleds/speedyleds.c | 31 +++++++++++++++++++++++++++++++
2 files changed, 39 insertions(+)
create mode 100644 speedyleds/Makefile
create mode 100644 speedyleds/speedyleds.c
diff --git a/speedyleds/Makefile b/speedyleds/Makefile
new file mode 100644
index 0000000..374e6c6
--- /dev/null
+++ b/speedyleds/Makefile
@@ -0,0 +1,8 @@
+speedyleds.hex: speedyleds.o
+ avr-objcopy -j .text -j .data -O ihex speedyleds.o speedyleds.hex
+
+speedyleds.o:
+ avr-gcc speedyleds.c -o speedyleds.o -Wall -Wextra -Wpedantic -mmcu=atmega328p -Os -std=c99
+
+flash:
+ avrdude -p atmega328p -c gpio -U flash:w:speedyleds.hex
diff --git a/speedyleds/speedyleds.c b/speedyleds/speedyleds.c
new file mode 100644
index 0000000..a292693
--- /dev/null
+++ b/speedyleds/speedyleds.c
@@ -0,0 +1,31 @@
+#define F_CPU 12000000UL
+
+#include<util/delay.h>
+#include<avr/io.h>
+#include<avr/libc.h>
+
+int main(void){
+ DDRD = 0b11111100;
+ DDRB = 0b00111111;
+ PORTD = 0b00000011;
+ PORTB = 0b00000000;
+ char on = 0;
+ while(1){
+ while(!on){
+ if(PORTD != 0b11111111) PORTD = (PORTD<<1)+1;
+ else{
+ if(PORTB != 0b11111111) PORTB = (PORTB<<1)+1;
+ else on=1;
+ }
+ _delay_ms(250);
+ }
+ while(on){
+ if(PORTB != 0b00000000) PORTB = (PORTB-1)>>1;
+ else{
+ if(PORTD != 0b00000011) PORTD = (PORTD-1)>>1;
+ else on=0;
+ }
+ _delay_ms(250);
+ }
+ }
+}
--
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