root / trunk / cardbox / main.c @ 211
History | View | Annotate | Download (5.64 KB)
1 |
/********
|
---|---|
2 |
* This file is part of Tooltron.
|
3 |
*
|
4 |
* Tooltron is free software: you can redistribute it and/or modify
|
5 |
* it under the terms of the Lesser GNU General Public License as published by
|
6 |
* the Free Software Foundation, either version 3 of the License, or
|
7 |
* (at your option) any later version.
|
8 |
*
|
9 |
* Tooltron is distributed in the hope that it will be useful,
|
10 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
11 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
12 |
* Lesser GNU General Public License for more details.
|
13 |
* You should have received a copy of the Lesser GNU General Public License
|
14 |
* along with Tooltron. If not, see <http://www.gnu.org/licenses/>.
|
15 |
*
|
16 |
* Copyright 2009 Kevin Woo <kwoo@2ndt.com>
|
17 |
*
|
18 |
********/
|
19 |
#include <util/delay.h> |
20 |
#include "rs485_int.h" |
21 |
#include <avr/interrupt.h> |
22 |
#include <avr/io.h> |
23 |
|
24 |
#include <tooltron.h> |
25 |
#include "timer.h" |
26 |
|
27 |
/***** Keypad definitions ******/
|
28 |
/** @brief ROW1 of the keypad */
|
29 |
#define ROW4 (_BV(PB0))
|
30 |
/** @brief ROW2 of the keypad */
|
31 |
#define ROW3 (_BV(PB1))
|
32 |
/** @brief ROW3 of the keypad */
|
33 |
#define ROW2 (_BV(PB2))
|
34 |
/** @brief ROW4 of the keypad */
|
35 |
#define ROW1 (_BV(PB3))
|
36 |
/** @brief COL1 of the keypad */
|
37 |
#define COL4 (_BV(PB4))
|
38 |
/** @brief COL2 of the keypad */
|
39 |
|
40 |
#define COL3 (_BV(PB5))
|
41 |
/** @brief COL3 of the keypad */
|
42 |
#define COL2 (_BV(PB6))
|
43 |
/** @brief COL4 of the keypad */
|
44 |
#define COL1 (_BV(PB7))
|
45 |
|
46 |
/***** LED definitions *****/
|
47 |
#define LED_RED (_BV(PC5))
|
48 |
#define LED_YELLOW (_BV(PC4))
|
49 |
#define LED_GREEN (_BV(PC3))
|
50 |
|
51 |
#define ADDR 2 |
52 |
|
53 |
/***** Global variables *****/
|
54 |
|
55 |
void init_pins(void) { |
56 |
DDRB = 0;
|
57 |
PORTB = (COL1|COL2|COL3|COL4); |
58 |
|
59 |
DDRC |= LED_RED | LED_YELLOW | LED_GREEN; |
60 |
|
61 |
PORTC |= LED_RED | LED_GREEN | LED_YELLOW; |
62 |
|
63 |
return;
|
64 |
} |
65 |
|
66 |
/**
|
67 |
* @brief Sets the LED to the specified state
|
68 |
*
|
69 |
* This sets LED which to the specified state. You can use this to set
|
70 |
* multiple LEDs if you OR the LEDs desired into the which argument.
|
71 |
*
|
72 |
* @param which The LEDs to set
|
73 |
* @parma state The state ON or OFF to set to the LEDs to
|
74 |
* @return void
|
75 |
*/
|
76 |
void toggle_led(uint8_t which, uint8_t state) {
|
77 |
if (state == ON) {
|
78 |
LED_PORT &= ~(which); |
79 |
} else {
|
80 |
LED_PORT |= (which); |
81 |
} |
82 |
} |
83 |
|
84 |
|
85 |
char get_button(void) { |
86 |
|
87 |
char ret = ' '; |
88 |
|
89 |
// Row 1 Strobe
|
90 |
|
91 |
|
92 |
DDRB = (ROW1); |
93 |
PORTB = (COL1|COL2|COL3|COL4); |
94 |
|
95 |
if(!(PINB&(COL1)))
|
96 |
ret ='1';
|
97 |
else if(!(PINB&(COL2))) |
98 |
ret ='2';
|
99 |
else if(!(PINB&(COL3))) |
100 |
ret ='3';
|
101 |
else if(!(PINB&(COL4))) |
102 |
ret ='A';
|
103 |
else {
|
104 |
|
105 |
DDRB = (ROW2); |
106 |
PORTB = (COL1|COL2|COL3|COL4); |
107 |
// Row 2 Strobe
|
108 |
|
109 |
if(!(PINB&(COL1)))
|
110 |
ret ='4';
|
111 |
else if(!(PINB&(COL2))) |
112 |
ret ='5';
|
113 |
else if(!(PINB&(COL3))) |
114 |
ret ='6';
|
115 |
else if(!(PINB&(COL4))) |
116 |
ret ='B';
|
117 |
else {
|
118 |
|
119 |
// Row 3 Strobe
|
120 |
DDRB = (ROW3); |
121 |
PORTB = (COL1|COL2|COL3|COL4); |
122 |
|
123 |
if(!(PINB&(COL1)))
|
124 |
ret ='7';
|
125 |
else if(!(PINB&(COL2))) |
126 |
ret ='8';
|
127 |
else if(!(PINB&(COL3))) |
128 |
ret ='9';
|
129 |
else if(!(PINB&(COL4))) |
130 |
ret ='C';
|
131 |
else{
|
132 |
|
133 |
// Row 4 Strobe
|
134 |
DDRB = (ROW4); |
135 |
PORTB = (COL1|COL2|COL3|COL4); |
136 |
|
137 |
if(!(PINB&(COL1)))
|
138 |
ret ='*';
|
139 |
else if(!(PINB&(COL2))) |
140 |
ret ='0';
|
141 |
else if(!(PINB&(COL3))) |
142 |
ret ='#';
|
143 |
else if(!(PINB&(COL4))) |
144 |
ret ='D';
|
145 |
} |
146 |
} |
147 |
} |
148 |
|
149 |
|
150 |
DDRB = 0;
|
151 |
PORTB = (COL1|COL2|COL3|COL4); |
152 |
|
153 |
return ret;
|
154 |
} |
155 |
|
156 |
typedef enum { |
157 |
req, |
158 |
press, |
159 |
send, |
160 |
rsp |
161 |
} state_t; |
162 |
|
163 |
|
164 |
int main(void) { |
165 |
uint8_t mbuf[PROGD_PACKET_SIZE]; |
166 |
uint8_t resp; |
167 |
uint8_t c; |
168 |
state_t state = req; |
169 |
|
170 |
rs485_init(BAUD9600); |
171 |
init_pins(); |
172 |
init_timer(); |
173 |
sei(); |
174 |
|
175 |
while(1) { |
176 |
|
177 |
switch(state) {
|
178 |
case req:
|
179 |
toggle_led(LED_RED|LED_GREEN|LED_YELLOW, OFF); |
180 |
|
181 |
// Wait for a packet
|
182 |
resp = parse_packet(mbuf, ADDR); |
183 |
|
184 |
if (resp == TT_GET_KEY) {
|
185 |
toggle_led(LED_YELLOW, ON); |
186 |
reset_timer(); |
187 |
reset_timeout_flag(); |
188 |
start_timer(); |
189 |
c = ' ';
|
190 |
state = press; |
191 |
} |
192 |
break;
|
193 |
case press:
|
194 |
c = get_button(); |
195 |
|
196 |
if (seconds > TIMEOUT_SECONDS) {
|
197 |
set_timeout_flag(); |
198 |
state = send; |
199 |
} else if (c != ' ') { |
200 |
state = send; |
201 |
} |
202 |
|
203 |
break;
|
204 |
case send:
|
205 |
if (timeoutflag == 1) { |
206 |
send_packet(TT_TIMEOUT, ADDR); |
207 |
state = req; |
208 |
} else {
|
209 |
send_packet_data(TT_SEND_KEY, ADDR, &c, 1);
|
210 |
} |
211 |
|
212 |
state = rsp; |
213 |
break;
|
214 |
case rsp:
|
215 |
resp = parse_packet(mbuf, ADDR); |
216 |
|
217 |
if (resp == TT_ACK
|
218 |
|
219 |
|
220 |
|
221 |
|
222 |
|
223 |
if (timeout_flag == 0) { |
224 |
//respond with key pressed
|
225 |
uart_send_byte(c); |
226 |
|
227 |
//wait for response
|
228 |
c=0;
|
229 |
reset_timeout_flag(); |
230 |
reset_timer(); |
231 |
while((uart_get_byte(&c) < 0) && (seconds < TIMEOUT_SECONDS)); |
232 |
|
233 |
PORTC |= LED_YELLOW; |
234 |
|
235 |
switch(c)
|
236 |
{ |
237 |
case TT_ACK:
|
238 |
PORTC &= ~LED_GREEN; |
239 |
break;
|
240 |
|
241 |
case TT_NACK:
|
242 |
PORTC &= ~LED_RED; |
243 |
break;
|
244 |
|
245 |
case TT_GET_KEY: //this means the states are messed up |
246 |
PORTC &= (~LED_RED & ~LED_YELLOW & ~LED_GREEN); |
247 |
break;
|
248 |
|
249 |
case 0: //timeout |
250 |
PORTC &= (~LED_RED & ~LED_YELLOW); |
251 |
break;
|
252 |
|
253 |
default: //bad packet |
254 |
PORTC &= (~LED_RED & ~LED_GREEN); |
255 |
break;
|
256 |
} |
257 |
|
258 |
stop_timer(); |
259 |
_delay_ms(1000);
|
260 |
|
261 |
} |
262 |
} |
263 |
return 0; |
264 |
|
265 |
} |