altos: SPI slave code is now per-product

[fw/altos] / src / drivers / ao_science_slave.c

diff --git a/src/drivers/ao_science_slave.c b/src/drivers/ao_science_slave.c
new file mode 100644 (file)
index 0000000..e902318
--- /dev/null
+++ b/src/drivers/ao_science_slave.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright © 2011 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 "ao.h"
+#include "ao_product.h"
+
+struct ao_companion_command    ao_companion_command;
+
+static const struct ao_companion_setup ao_telescience_setup = {
+       .board_id               = AO_idProduct_NUMBER,
+       .board_id_inverse       = ~AO_idProduct_NUMBER,
+       .update_period          = 50,
+       .channels               = AO_LOG_TELESCIENCE_NUM_ADC,
+};
+
+void ao_spi_slave(void)
+{
+       if (!ao_spi_read((uint8_t *) &ao_companion_command,
+                        sizeof (ao_companion_command)))
+               return;
+
+       /* Figure out the outbound data */
+       switch (ao_companion_command.command) {
+       case AO_COMPANION_SETUP:
+               ao_spi_write((uint8_t *) &ao_telescience_setup,
+                            sizeof (ao_telescience_setup));
+               break;
+       case AO_COMPANION_FETCH:
+               ao_spi_write((uint8_t *) &ao_adc_ring[ao_adc_ring_prev(ao_adc_head)].adc,
+                            AO_LOG_TELESCIENCE_NUM_ADC * sizeof (uint16_t));
+               break;
+       case AO_COMPANION_NOTIFY:
+               break;
+       default:
+               return;
+       }
+
+       ao_log_single_write_data.telescience.tm_tick = ao_companion_command.tick;
+       if (ao_log_single_write_data.telescience.tm_state != ao_companion_command.flight_state) {
+               ao_log_single_write_data.telescience.tm_state = ao_companion_command.flight_state;
+               if (ao_flight_boost <= ao_log_single_write_data.telescience.tm_state) {
+                       if (ao_log_single_write_data.telescience.tm_state < ao_flight_landed)
+                               ao_log_single_start();
+                       else
+                               ao_log_single_stop();
+               }
+       }
+}