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-rw-r--r--digital/beacon/tests/twi/twi_specific.c106
1 files changed, 106 insertions, 0 deletions
diff --git a/digital/beacon/tests/twi/twi_specific.c b/digital/beacon/tests/twi/twi_specific.c
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+/* twi_specific.c */
+/* twi specific funtion. {{{
+ *
+ * Copyright (C) 2012 Florent Duchon
+ *
+ * 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 "modules/utils/byte.h"
+#include "modules/utils/crc.h"
+#include "twi_specific.h"
+#include "configuration.h"
+#include "twi.h"
+#include "network.h"
+
+
+static HAL_AppTimer_t twiTimer;
+
+uint16_t opponent1_x = 13;
+uint16_t opponent1_y = 37;
+uint16_t opponent1_trust = 42;
+uint16_t opponent2_x = 1500;
+uint16_t opponent2_y = 1671;
+uint16_t opponent2_trust = 99;
+
+/* This function manages the TWI RX/RX transferts */
+void twi_task(void)
+{
+ uint8_t TXbuffer[AC_TWI_SLAVE_SEND_BUFFER_SIZE];
+ uint8_t RXbuffer[AC_TWI_SLAVE_RECV_BUFFER_SIZE];
+ uint8_t RXlen;
+ static uint8_t seq = 0;
+
+ TXbuffer[TWI_TX_SEQ_FIELD] = seq;
+
+ /* Opponent 1 */
+ TXbuffer[TWI_TX_X1_MSB_FIELD] = v16_to_v8 (opponent1_x, 1);
+ TXbuffer[TWI_TX_X1_LSB_FIELD] = v16_to_v8 (opponent1_x, 0);
+ TXbuffer[TWI_TX_Y1_MSB_FIELD] = v16_to_v8 (opponent1_y, 1);
+ TXbuffer[TWI_TX_Y1_LSB_FIELD] = v16_to_v8 (opponent1_y, 0);
+ TXbuffer[TWI_TX_TRUST1_FIELD] = opponent1_trust;
+
+ /* Opponent 2 */
+ TXbuffer[TWI_TX_X2_MSB_FIELD] = v16_to_v8 (opponent2_x, 1);
+ TXbuffer[TWI_TX_X2_LSB_FIELD] = v16_to_v8 (opponent2_x, 0);
+ TXbuffer[TWI_TX_Y2_MSB_FIELD] = v16_to_v8 (opponent2_y, 1);
+ TXbuffer[TWI_TX_Y2_LSB_FIELD] = v16_to_v8 (opponent2_y, 0);
+ TXbuffer[TWI_TX_TRUST2_FIELD] = opponent2_trust;
+
+ /* Compute CRC */
+ TXbuffer[TWI_TX_CRC_FIELD] = crc_compute (&TXbuffer[1],TWI_TX_FIELD_NB-1);
+
+ /* data to be communicated to the master */
+ twi_slave_update (TXbuffer, sizeof (TXbuffer));
+
+ /* Check for data. */
+ RXlen = twi_slave_poll (RXbuffer, AC_TWI_SLAVE_RECV_BUFFER_SIZE);
+
+ /* data availlable */
+ if(RXlen != 0)
+ {
+ if (crc_compute (RXbuffer + 1, RXlen - 1) == RXbuffer[0])
+ {
+ if(RXbuffer[TWI_RX_JACK_FIELD] == 1)
+ {
+ PORTD=0xFF;
+ }
+ else
+ {
+ PORTD=0x00;
+ }
+ }
+ else
+ {
+ /* CRC not valid, dump values */
+ }
+ }
+}
+
+/* Initialisze specific TWI */
+void twi_init_specific(void)
+{
+ twi_init(AC_BEACON_TWI_ADDRESS);
+ twiTimer.interval = TWI_TASK_PERIOD;
+ twiTimer.mode = TIMER_REPEAT_MODE;
+ twiTimer.callback = twi_task;
+ HAL_StartAppTimer(&twiTimer);
+}
+