From 64b8d034d0ba426ca5d2ef8a86d4611f0eb05ebf Mon Sep 17 00:00:00 2001
From: Holden Rohrer <hr@hrhr.dev>
Date: Tue, 19 May 2020 17:12:28 -0400
Subject: initial commit

---
 on.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 on.c

(limited to 'on.c')

diff --git a/on.c b/on.c
new file mode 100644
index 0000000..c1f43ab
--- /dev/null
+++ b/on.c
@@ -0,0 +1,32 @@
+#define __AVR_ATmega328P__
+#include <avr/io.h>
+#define F_CPU 16000000UL
+#include <util/delay.h>
+
+typedef enum { false, true } bool;
+
+typedef enum { INSTRUCTION, DATA = 2 } regselect;
+typedef enum { WRITE, READ } readwrite;
+
+static void setregrw(regselect reg, readwrite rw){
+    PORTC = (PORTC & ~3) | reg | rw;
+}
+
+#define enablepin(val) val ? (PORTC |= 4) : (PORTC &= ~4);
+
+static void wdata(uint8_t data){
+    DDRD |= 0xF0;
+    enablepin(true);
+    PORTD = data;
+    __asm__ ("nop;");
+    enablepin(false);
+}
+
+int main(){
+    DDRC = 0x07;
+    DDRD = 0x08;
+    //PORTD = 0x08;
+    _delay_ms(10000);
+    return 0;
+}
+
-- 
cgit