From cb20e5902b7786d2ab84179bc680f16afc9e4341 Mon Sep 17 00:00:00 2001
From: MightyPork <ondra@ondrovo.com>
Date: Fri, 1 May 2015 00:32:23 +0200
Subject: [PATCH] added keyhandler example

---
 examples/Makefile          |  2 +-
 examples/uart_keyhandler.c | 51 ++++++++++++++++++++++++++++++++++++++
 lib/stream.h               |  1 +
 3 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 examples/uart_keyhandler.c

diff --git a/examples/Makefile b/examples/Makefile
index c36a52e..cdca97f 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -11,7 +11,7 @@ EFUSE = 0x05
 
 ## === Source files ===
 # Main C file
-MAIN = uart_isr.c
+MAIN = uart_keyhandler.c
 # Extra C files in this folder
 LOCAL_SOURCE =
 
diff --git a/examples/uart_keyhandler.c b/examples/uart_keyhandler.c
new file mode 100644
index 0000000..5c12346
--- /dev/null
+++ b/examples/uart_keyhandler.c
@@ -0,0 +1,51 @@
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <stdint.h>
+
+#include "lib/uart.h"
+#include "lib/uart_ansi.h"
+#include "lib/stream.h"
+
+//
+// Example of asynchronous UART key handling
+//
+// It recognizes special keys like arrows and some F keys,
+// check the header file for full list.
+//
+// You need uart_ansi for this.
+//
+
+ISR(USART_RX_vect)
+{
+	char c = uart_rx();
+	vt_handle_key(c);
+	// we can do anything further with the received byte
+}
+
+
+// Our custom key handler function
+void key_handler(uint8_t code, bool special)
+{
+	put_str_P(uart, special ? PSTR("Special: ") : PSTR("Char: "));
+	put_char(uart, code); // the actual character
+	put_char(uart, ' '); // space
+	put_u8(uart, code); // as number
+	put_nl(uart); // crlf
+}
+
+
+void main()
+{
+	uart_init(9600);  // set BAUD-rate
+	uart_isr_rx(1);  // enable the ISR
+	vt_init();  // initialize uart_ansi library
+
+	vt_set_key_handler(&key_handler);  // assign our custom handler
+
+	sei();
+
+	put_str_P(uart, PSTR("UART key handler test!\r\n"));
+
+	while(1);
+}
diff --git a/lib/stream.h b/lib/stream.h
index 5c7ca32..8ed7979 100644
--- a/lib/stream.h
+++ b/lib/stream.h
@@ -38,6 +38,7 @@ void put_str_P(const STREAM *p, const char* str);
 
 
 /** Send signed int8 */
+#define put_char(p, c) (p)->tx((c))
 void put_u8(const STREAM *p, const uint8_t num);