From e63ed8a651e5246f8698a9c1c3e540029710d0e9 Mon Sep 17 00:00:00 2001
From: FreeArtMan <dos21h@gmail.com>
Date: Thu, 27 May 2021 20:06:47 +0100
Subject: Update 10 articles from html to md

---
 md/writeup/avr_echo.md | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 md/writeup/avr_echo.md

(limited to 'md/writeup/avr_echo.md')

diff --git a/md/writeup/avr_echo.md b/md/writeup/avr_echo.md
new file mode 100644
index 0000000..0dac9fb
--- /dev/null
+++ b/md/writeup/avr_echo.md
@@ -0,0 +1,36 @@
+title:AVR echo
+keywords:avr,echo,c,atmega
+
+
+# AVR echo
+This code tested on ATmega16
+
+```c
+#include <avr/io.h>
+ 
+#define FOSC 16000000UL
+#define BAUD 9600
+#define MYUBRR FOSC/16/BAUD-1
+ 
+void USART_Init( unsigned int ubrr)
+{
+    UBRRH = (unsigned char)(ubrr>>8);
+    UBRRL = (unsigned char)ubrr;
+    UCSRB = (1<<RXEN)|(1<<TXEN);
+    UCSRC = (1<<URSEL)|(1<<USBS)|(3<<UCSZ0);
+}
+ 
+int main()
+{
+    char c;
+    USART_Init( MYUBRR );
+    while(1)
+    {
+        while ( !(UCSRA & (1<<RXC))){};
+        c = UDR;
+        while (!(UCSRA & (1<<UDRE))){};
+        UDR = c;
+    }
+    return 0;
+}
+```
-- 
cgit v1.2.3