altos: Add RFPA0133 amplifier driver

[fw/altos] / src / drivers / ao_rfpa0133.c

diff --git a/src/drivers/ao_rfpa0133.c b/src/drivers/ao_rfpa0133.c
new file mode 100644 (file)
index 0000000..70d5edb
--- /dev/null
+++ b/src/drivers/ao_rfpa0133.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright © 2013 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"
+
+static uint8_t power = 0;
+
+static void
+ao_rfpa0133_set_power(void)
+{
+       ao_gpio_set(AO_PA_GAIN_8_GPIO, AO_PA_GAIN_8_PIN, AO_PA_GAIN_8, power & 1);
+       ao_gpio_set(AO_PA_GAIN_16_GPIO, AO_PA_GAIN_16_PIN, AO_PA_GAIN_16, (power >> 1) & 1);
+}
+
+void
+ao_radio_pa_on(void)
+{
+       ao_rfpa0133_set_power();
+       ao_gpio_set(AO_PA_POWER_GPIO, AO_PA_POWER_PIN, AO_PA_POWER, 1);
+}
+
+void
+ao_radio_pa_off(void)
+{
+       ao_gpio_set(AO_PA_POWER_GPIO, AO_PA_POWER_PIN, AO_PA_POWER, 0);
+}
+
+void
+ao_radio_pa_init(void)
+{
+       ao_enable_output(AO_PA_POWER_GPIO, AO_PA_POWER_PIN, AO_PA_POWER, 0);
+       ao_enable_output(AO_PA_GAIN_8_GPIO, AO_PA_GAIN_8_PIN, AO_PA_GAIN_8, 0);
+       ao_enable_output(AO_PA_GAIN_16_GPIO, AO_PA_GAIN_16_PIN, AO_PA_GAIN_16, 0);
+}