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-rw-r--r--digital/io-serial/src/codebar/codebar.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/digital/io-serial/src/codebar/codebar.c b/digital/io-serial/src/codebar/codebar.c
new file mode 100644
index 00000000..056508c3
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+++ b/digital/io-serial/src/codebar/codebar.c
@@ -0,0 +1,171 @@
+/* codebar.c */
+/* codebar - Codebar Reader. {{{
+ *
+ * Copyright (C) 2011
+ *
+ * APBTeam:
+ * Web: http://apbteam.org/
+ * Email: team AT apbteam DOT org
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * }}} */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "common.h"
+#include "codebar.h"
+#include "modules/twi/twi.h"
+#include "modules/proto/proto.h"
+#include "modules/uart/uart.h"
+#include "modules/utils/utils.h"
+#include "modules/utils/byte.h"
+#include "modules/utils/crc.h"
+#include "timer.h"
+
+/* from robospierre/element.h file */
+#define ELEMENT_UNKOWN 0
+#define ELEMENT_PAWN 1
+#define ELEMENT_QUEEN 2
+#define ELEMENT_KING 4
+
+#define KING "KING"
+#define QUEEN "QUEEN"
+#define PAWN "PAWN"
+
+#define STRING_MAX 10
+
+struct status_t
+{
+ uint16_t age1;
+ uint8_t piece1;
+ uint16_t age2;
+ uint8_t piece2;
+};
+
+void proto_callback (uint8_t cmd, uint8_t size, uint8_t *args)
+{
+ /* nothing here*/
+}
+
+uint8_t string_to_element(char* data)
+{
+ if (strlen(data) == 5)
+ return ELEMENT_QUEEN;
+ if (strcmp(data, KING) == 0)
+ return ELEMENT_KING;
+ if (strcmp(data, PAWN) == 0)
+ return ELEMENT_PAWN;
+ return ELEMENT_UNKOWN;
+}
+
+char* read_string(int uart_port)
+{
+ static int cnt_char_u0 = 0;
+ static char buffer_u0[STRING_MAX] = {'\0'};
+ static int cnt_char_u1 = 0;
+ static char buffer_u1[STRING_MAX] = {'\0'};
+
+ char c;
+
+ if (uart_port == 0 && uart0_poll ())
+ {
+ while ( uart0_poll() && (c = uart0_getc()) != '\r')
+ {
+ buffer_u0[cnt_char_u0] = c;
+ cnt_char_u0++;
+ }
+ buffer_u0[cnt_char_u0+1] = '\0';
+ cnt_char_u0 = 0;
+ return buffer_u0;
+ }
+ else if (uart_port == 1 && uart1_poll())
+ {
+ while ( uart1_poll() && (c = uart1_getc()) != '\r')
+ {
+ buffer_u1[cnt_char_u1] = c;
+ cnt_char_u1++;
+ }
+ buffer_u1[cnt_char_u1+1] = '\0';
+ cnt_char_u1 = 0;
+ return buffer_u1;
+ }
+ else
+ {
+ return NULL;
+ }
+}
+
+int
+main (int argc, char **argv)
+{
+ char* buffer;
+ struct status_t status;
+
+ status.age1 = 0;
+ status.piece1 = ELEMENT_UNKOWN;
+ status.age2 = 0;
+ status.piece2 = ELEMENT_UNKOWN;
+
+ timer_init ();
+ avr_init (argc, argv);
+ sei ();
+ uart0_init ();
+ uart1_init ();
+ /* We have successfully boot. */
+ proto_send0 ('z');
+ /* Initialize TWI. */
+ twi_init (0x04);
+ /* I am a slave. */
+ proto_send0 ('S');
+
+ while (1)
+ {
+ /* Wait until next cycle. */
+ timer_wait ();
+ if (status.age1 < (uint16_t) -1)
+ status.age1 ++;
+ if (status.age2 < (uint16_t) -1)
+ status.age2 ++;
+
+ if ((buffer = read_string(0)) != NULL)
+ {
+ status.piece1 = string_to_element(buffer);
+ }
+
+ if ((buffer = read_string(1)) != NULL)
+ {
+ status.piece2 = string_to_element(buffer);
+ }
+
+ uint8_t status_with_crc[8];
+ uint8_t *status_twi = &status_with_crc[1];
+ status_twi[0] = v16_to_v8 (status.age1, 0);
+ status_twi[1] = v16_to_v8 (status.age1, 1);
+ status_twi[2] = status.piece1;
+ status_twi[3] = v16_to_v8 (status.age2, 0);
+ status_twi[4] = v16_to_v8 (status.age2, 1);
+ status_twi[5] = status.piece2;
+ status_twi[6] = 42;
+ status_twi[7] = 32;
+ /* Compute CRC. */
+ status_with_crc[0] = crc_compute (&status_with_crc[1], sizeof (status_with_crc) - 1);
+ twi_slave_update (status_with_crc, sizeof (status_with_crc));
+
+ }
+ return 0;
+}