From 2c997f95cb167e9023c1a44abaeda4ea80bbc7d3 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Thu, 8 Aug 2013 22:39:50 +0000
Subject: moved usb-i2c-sl018 to tuer-rfid

git-svn-id: https://svn.spreadspace.org/avr/trunk@216 aa12f405-d877-488e-9caf-2d797e2a1cc7
---
 tuer-rfid/ledmatrix.c | 218 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 218 insertions(+)
 create mode 100644 tuer-rfid/ledmatrix.c

(limited to 'tuer-rfid/ledmatrix.c')

diff --git a/tuer-rfid/ledmatrix.c b/tuer-rfid/ledmatrix.c
new file mode 100644
index 0000000..c319b6d
--- /dev/null
+++ b/tuer-rfid/ledmatrix.c
@@ -0,0 +1,218 @@
+/*
+ *  spreadspace avr utils
+ *
+ *
+ *  Copyright (C) 2013 Christian Pointner <equinox@spreadspace.org>
+ *                     Othmar Gsenger <otti@wirdorange.org>
+ *
+ *  This file is part of spreadspace avr utils.
+ *
+ *  spreadspace avr utils is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  spreadspace avr utils is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <avr/sfr_defs.h>
+#include <avr/interrupt.h>
+
+#include "ledmatrix.h"
+
+#define LEDMATRIX_PORT PORTB
+#define LEDMATRIX_DDR DDRB
+#define LEDMATRIX_RED 6
+#define LEDMATRIX_GREEN 7
+#define LEDMATRIX_NUM_LEDS 6
+#define LEDMATRIX_MASK 0x3F
+#define BLINK_DELAY 3
+
+ledmatrix_mode_t mode = off;
+uint8_t moving_cnt = 0;
+uint8_t wait_cnt = 0;
+
+void ledmatrix_start_timer(void)
+{
+  TCCR3A = 0;                             // prescaler 1:1024, WGM = 4 (CTC)
+  TCCR3B = 1<<WGM32 | 1<<CS32 | 1<<CS30;  //
+  OCR3A = 1561;                           // (1+1561)*1024 = 1599488 -> ~100 ms @ 16 MHz
+  TCNT3 = 0;
+  TIMSK3 = 1<<OCIE3A;
+}
+
+void ledmatrix_stop_timer(void)
+{
+  TCCR3B = 0;
+  TIMSK3 = 0;
+}
+
+void ledmatrix_off_init(void)
+{  
+  LEDMATRIX_PORT = LEDMATRIX_MASK;
+  LEDMATRIX_PORT |= 1<<LEDMATRIX_RED | 1<<LEDMATRIX_GREEN;
+}
+
+
+void ledmatrix_red_init(void)
+{
+  LEDMATRIX_PORT = LEDMATRIX_MASK | 1<<LEDMATRIX_GREEN;
+  LEDMATRIX_PORT &= ~(1<<LEDMATRIX_RED);
+}
+
+
+void ledmatrix_red_moving_init(void)
+{
+  moving_cnt = 0;
+  LEDMATRIX_PORT = (1<<LEDMATRIX_GREEN) | (LEDMATRIX_MASK & (1<<moving_cnt));
+  ledmatrix_start_timer();
+}
+
+void ledmatrix_red_moving_handle(void)
+{
+  moving_cnt++;
+  if(moving_cnt >= LEDMATRIX_NUM_LEDS)
+    moving_cnt = 0;
+  LEDMATRIX_PORT = (1<<LEDMATRIX_GREEN) | (LEDMATRIX_MASK & (1<<moving_cnt));
+}
+
+
+void ledmatrix_red_blink_init(void)
+{
+  wait_cnt = 0;
+  ledmatrix_red_init();
+  ledmatrix_start_timer();
+}
+
+void ledmatrix_red_blink_handle(void)
+{
+  if(++wait_cnt >= BLINK_DELAY) {
+    LEDMATRIX_PORT ^= 1<<LEDMATRIX_RED;
+    wait_cnt = 0;
+  }
+}
+
+
+void ledmatrix_green_init(void)
+{
+  LEDMATRIX_PORT = LEDMATRIX_MASK | 1<<LEDMATRIX_RED;
+  LEDMATRIX_PORT &= ~(1<<LEDMATRIX_GREEN);
+}
+
+
+void ledmatrix_green_moving_init(void)
+{
+  moving_cnt = 0;
+  LEDMATRIX_PORT = (1<<LEDMATRIX_RED) | (LEDMATRIX_MASK & (1<<(LEDMATRIX_NUM_LEDS - moving_cnt - 1)));
+  ledmatrix_start_timer();
+}
+
+void ledmatrix_green_moving_handle(void)
+{
+  moving_cnt++;
+  if(moving_cnt >= LEDMATRIX_NUM_LEDS)
+    moving_cnt = 0;
+  LEDMATRIX_PORT = (1<<LEDMATRIX_RED) | (LEDMATRIX_MASK & (1<<(LEDMATRIX_NUM_LEDS - moving_cnt - 1)));
+}
+
+
+void ledmatrix_green_blink_init(void)
+{
+  wait_cnt = 0;
+  ledmatrix_green_init();
+  ledmatrix_start_timer();
+}
+
+void ledmatrix_green_blink_handle(void)
+{
+  if(++wait_cnt >= BLINK_DELAY) {
+    LEDMATRIX_PORT ^= 1<<LEDMATRIX_GREEN;
+    wait_cnt = 0;
+  }
+}
+
+
+void ledmatrix_rg_moving_init(void)
+{
+  moving_cnt = 0;
+  LEDMATRIX_PORT = (1<<LEDMATRIX_GREEN) | (LEDMATRIX_MASK & (1<<moving_cnt));
+  ledmatrix_start_timer();
+}
+
+void ledmatrix_rg_moving_handle(void)
+{
+  moving_cnt++;
+  if(moving_cnt >= 2*LEDMATRIX_NUM_LEDS)
+    moving_cnt = 0;
+
+  if(moving_cnt >= LEDMATRIX_NUM_LEDS) {
+    uint8_t offset = moving_cnt - LEDMATRIX_NUM_LEDS;
+    LEDMATRIX_PORT = (1<<LEDMATRIX_RED) | (LEDMATRIX_MASK & (1<<(LEDMATRIX_NUM_LEDS - offset - 1)));
+  } else {
+    LEDMATRIX_PORT = (1<<LEDMATRIX_GREEN) | (LEDMATRIX_MASK & (1<<moving_cnt));
+  }
+}
+
+
+void ledmatrix_rg_blink_init(void)
+{
+  wait_cnt = 0;
+  ledmatrix_red_init();
+  ledmatrix_start_timer();
+}
+
+void ledmatrix_rg_blink_handle(void)
+{
+  if(++wait_cnt >= BLINK_DELAY) {
+    LEDMATRIX_PORT ^= ~(LEDMATRIX_MASK);
+    wait_cnt = 0;
+  }
+}
+
+
+void ledmatrix_init(void)
+{
+  LEDMATRIX_DDR = 0xFF;
+  LEDMATRIX_PORT = 0xFF;
+}
+
+void ledmatrix_set(ledmatrix_mode_t m)
+{
+  if(m == mode) 
+    return;
+
+  mode = m;
+  ledmatrix_stop_timer();
+  switch(mode)
+  {
+  case off: ledmatrix_off_init(); break;
+  case red: ledmatrix_red_init(); break;
+  case red_moving: ledmatrix_red_moving_init(); break;
+  case red_blink: ledmatrix_red_blink_init(); break;
+  case green: ledmatrix_green_init(); break;
+  case green_moving: ledmatrix_green_moving_init(); break;
+  case green_blink: ledmatrix_green_blink_init(); break;
+  case rg_moving: ledmatrix_rg_moving_init(); break;
+  case rg_blink: ledmatrix_rg_blink_init(); break;
+  }
+}
+
+ISR(TIMER3_COMPA_vect)
+{
+  switch(mode)
+  {
+  case red_moving: ledmatrix_red_moving_handle(); break;
+  case red_blink: ledmatrix_red_blink_handle(); break;
+  case green_moving: ledmatrix_green_moving_handle(); break;
+  case green_blink: ledmatrix_green_blink_handle(); break;
+  case rg_moving: ledmatrix_rg_moving_handle(); break;
+  case rg_blink: ledmatrix_rg_blink_handle(); break;
+  default: break;
+  }
+}
-- 
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