Aktuální adresář: FITkit /
trunk /
apps /
demo_msp /
clock /
mcu /
main.c
1 /*******************************************************************************
2 main: interrupt service routine (ISR) of timer A0 utilized for LED control
3 Copyright (C) 2009 Brno University of Technology,
4 Faculty of Information Technology
5 Author(s): Josef Strnadel <strnadel AT stud.fit.vutbr.cz>
6
7 LICENSE TERMS
8
9 Redistribution and use in source and binary forms, with or without
10 modification, are permitted provided that the following conditions
11 are met:
12 1. Redistributions of source code must retain the above copyright
13 notice, this list of conditions and the following disclaimer.
14 2. Redistributions in binary form must reproduce the above copyright
15 notice, this list of conditions and the following disclaimer in
16 the documentation and/or other materials provided with the
17 distribution.
18 3. All advertising materials mentioning features or use of this software
19 or firmware must display the following acknowledgement:
20
21 This product includes software developed by the University of
22 Technology, Faculty of Information Technology, Brno and its
23 contributors.
24
25 4. Neither the name of the Company nor the names of its contributors
26 may be used to endorse or promote products derived from this
27 software without specific prior written permission.
28
29 This software or firmware is provided ``as is'', and any express or implied
30 warranties, including, but not limited to, the implied warranties of
31 merchantability and fitness for a particular purpose are disclaimed.
32 In no event shall the company or contributors be liable for any
33 direct, indirect, incidental, special, exemplary, or consequential
34 damages (including, but not limited to, procurement of substitute
35 goods or services; loss of use, data, or profits; or business
36 interruption) however caused and on any theory of liability, whether
37 in contract, strict liability, or tort (including negligence or
38 otherwise) arising in any way out of the use of this software, even
39 if advised of the possibility of such damage.
40
41 $Id$
42
43
44 *******************************************************************************/
45
46 #include <fitkitlib.h>
47 #include <lcd/display.h>
48 #include "user_defined.h"
49
50 #include <string.h>
51
52 unsigned char clk_h, clk_m, clk_s;
53 unsigned short flag_timer;
54
55 /*******************************************************************************
56 * Vypis uzivatelske napovedy (funkce se vola pri vykonavani prikazu "help")
57 *******************************************************************************/
58 void print_user_help(void)
59 {
60 term_send_str_crlf(" SET HH:MM:SS ... zmena casu");
61 }
62
63
64 /*******************************************************************************
65 * Dekodovani a vykonani uzivatelskych prikazu
66 *******************************************************************************/
67 unsigned char decode_user_cmd(char *cmd_ucase, char *cmd)
68 {
69 unsigned char data[8];
70
71 if (strcmp4(cmd_ucase, "SET "))
72 {
73 term_send_str("Hodiny byly nastaveny na: ");
74 strcpy(data, get_data(cmd, 8));
75 term_send_str_crlf(data);
76
77 // konverze ascii retezce hh:mm:ss na hodnoty hh, mm, ss
78 clk_h = (data[0] - 48) * 10 + (data[1] - 48); // hh
79 clk_m = (data[3] - 48) * 10 + (data[4] - 48); // mm
80 clk_s = (data[6] - 48) * 10 + (data[7] - 48); // ss
81 }
82 else
83 {
84 return CMD_UNKNOWN;
85 }
86 return USER_COMMAND;
87 }
88
89 /*******************************************************************************
90 * Inicializace periferii/komponent po naprogramovani FPGA
91 *******************************************************************************/
92 void fpga_initialized()
93 {
94 term_send_str_crlf("----------------------------------------------------");
95 term_send_str_crlf("Aplikace je pripravena k behu.");
96 term_send_str_crlf("Zadejte prosim 'help' pro napovedu.");
97 term_send_str_crlf("----------------------------------------------------");
98
99 LCD_init(); // inicializuj LCD
100 LCD_append_string("FITkit: clock"); // zobraz text na LCD
101 LCD_send_cmd(LCD_DISPLAY_ON_OFF | LCD_DISPLAY_ON | LCD_CURSOR_OFF, 0); // vypni kurzor
102 }
103
104 /*******************************************************************************
105 * Zobrazeni casu (ve formatu HH:MM:SS) na LCD
106 *******************************************************************************/
107 void display_clock() {
108 LCD_send_cmd(LCD_SET_DDRAM_ADDR | LCD_SECOND_HALF_OFS, 0); // kurzor na druhou polovinu
109 delay_ms(2);
110
111 LCD_send_cmd((unsigned char)(clk_h / 10) + 48, 1); delay_ms(2); // zobraz hh
112 LCD_send_cmd((unsigned char)(clk_h % 10) + 48, 1); delay_ms(2);
113 LCD_send_cmd(0x3A, 1); delay_ms(2); // :
114 LCD_send_cmd((unsigned char)(clk_m / 10) + 48, 1); delay_ms(2); // zobraz mm
115 LCD_send_cmd((unsigned char)(clk_m % 10) + 48, 1); delay_ms(2);
116 LCD_send_cmd(0x3A, 1); delay_ms(2); // :
117 LCD_send_cmd((unsigned char)(clk_s / 10) + 48, 1); delay_ms(2); // zobraz ss
118 LCD_send_cmd((unsigned char)(clk_s % 10) + 48, 1); delay_ms(2);
119 }
120
121
122 /*******************************************************************************
123 * Hlavni funkce
124 *******************************************************************************/
125
126 int main(void)
127 {
128 flag_timer = 0;
129 initialize_hardware();
130 WDTCTL = WDTPW + WDTHOLD; // zastav watchdog
131
132 P1DIR |= 0x01; // nastav P1.0 na vystup (budeme ovladat zelenou LED D5)
133
134 CCTL0 = CCIE; // povol preruseni pro casovac (rezim vystupni komparace)
135 CCR0 = 0x8000; // nastav po kolika ticich (32768 = 0x8000, tj. za 1 s) ma dojit k preruseni
136 TACTL = TASSEL_1 + MC_2; // ACLK (f_tiku = 32768 Hz = 0x8000 Hz), nepretrzity rezim
137
138 P1OUT ^= 0x01; // inicializuj P1.0 na 1 (D5 zhasnuta)
139
140 clk_h = 0; // inicializuj hodiny
141 clk_m = 0; // inicializuj minuty
142 clk_s = 0; // inicializuj sekundy
143
144 while (1)
145 {
146 terminal_idle(); // obsluha terminalu
147 if (flag_timer > 0) {
148 display_clock(); // zobraz aktualizovane hh:mm:ss
149 flag_timer--;
150 }
151 }
152 }
153
154 /*******************************************************************************
155 * Obsluha preruseni casovace timer A0
156 *******************************************************************************/
157 interrupt (TIMERA0_VECTOR) Timer_A (void)
158 {
159 P1OUT ^= 0x01; // invertuj bit P1.0 (kazdou 1/2 s)
160 CCR0 += 0x8000; // nastav po kolika ticich (32768 = 0x8000, tj. za 1 s) ma dojit k dalsimu preruseni
161
162 clk_s++;
163
164 if(clk_s==60) { clk_m++; clk_s=0; } // kazdou 60. sekundu inkrementuj minuty
165 if(clk_m==60) { clk_h++; clk_m=0; } // kazdou 60. minutu inkrementuj hodiny
166 if(clk_h==24) // kazdych 24 hodin nuluj h,m,s
167 {
168 clk_h = clk_m = clk_s = 0;
169 }
170
171 flag_timer += 1;
172 }
173