From 18c96a7ee5a490fab4929a5ac345f8a5dd776ed2 Mon Sep 17 00:00:00 2001
From: mitchellhansen <mitchellhansen0@gmail.com>
Date: Wed, 27 Mar 2019 19:37:41 -0700
Subject: [PATCH] init

---
 build.sh  |  4 ++++
 listen.sh | 11 ++++++++++
 main.c    | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 76 insertions(+)
 create mode 100755 build.sh
 create mode 100755 listen.sh
 create mode 100644 main.c

diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..62e4f94
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,4 @@
+avr-gcc -Os -DF_CPU=16000000L -DBAUD=9600UL -mmcu=atmega328p main.c -o main.o
+avr-objcopy -O ihex main.o main.hex
+avrdude -v -patmega328p -carduino -P/dev/ttyUSB0 -b57600 -D -Uflash:w:main.hex:i
+ rm main.o main.hex
diff --git a/listen.sh b/listen.sh
new file mode 100755
index 0000000..869d703
--- /dev/null
+++ b/listen.sh
@@ -0,0 +1,11 @@
+#stty -F /dev/ttyUSB0 cs8 9600 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke noflsh -ixon -crtscts
+
+stty -F /dev/ttyUSB0 9600 -parenb -parodd cs8 -hupcl \
+-cstopb cread clocal -crtscts -iuclc -ixany -imaxbel \
+-iutf8 -opost -olcuc -ocrnl -onlcr -onocr -onlret -ofill \
+ -ofdel nl0 cr0 tab0 bs0 vt0 ff0 -isig -icanon -iexten \
+-echo -echoe -echok -echonl -noflsh -xcase -tostop -echoprt \
+-echoctl -echoke
+
+
+tail -f /dev/ttyUSB0
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..aeb62be
--- /dev/null
+++ b/main.c
@@ -0,0 +1,61 @@
+#include <util/delay.h>
+#include <avr/io.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <util/setbaud.h>
+#define LED PORTB5
+#define WIRE PORTB0
+
+
+void uart_init() {
+    // Upper and lower bytes of the calculated prescaler value for baud.
+    UBRR0H = UBRRH_VALUE;
+    UBRR0L = UBRRL_VALUE;
+
+    // Configure data frame size to 8-bits.
+    UCSR0C = _BV(UCSZ01) | _BV(UCSZ00);
+
+    // Configure to enable transmitter.
+    UCSR0B = _BV(TXEN0);
+}
+
+void uart_putchar(char c) {
+    // Wait until the register to write to is free.
+    loop_until_bit_is_set(UCSR0A, UDRE0);
+
+    // Write the byte to the register.
+    UDR0 = c;
+}
+
+void uart_putstr(char *data) {
+    // Loop until end of string writing char by char.
+    while(*data){
+      uart_putchar(*data++);
+    }
+}
+
+
+int main(void) {
+    
+    uart_init();
+
+    DDRB |= (1 << LED);
+    DDRB |= (1 << WIRE);
+    for(;;){
+            
+
+        uart_putstr("hello\n");
+        
+        _delay_ms(100);
+        
+        PORTB |= (1 << LED);
+        PORTB |= (1 << WIRE);
+        
+        _delay_ms(100);
+        
+        PORTB &= (0 << LED);
+        PORTB &= (0 << WIRE);
+    
+    }
+
+}