altos: Add RFPA0133 amplifier driver

No configuration of power level yet, just the bare driver.

Signed-off-by: Keith Packard <keithp@keithp.com>

3 files changed, 97 insertions, 0 deletions

diff --git a/src/core/ao.h b/src/core/ao.h
index ce0bf5d1..133d9118 100644
--- a/src/core/ao.h
+++ b/src/core/ao.h
@@ -535,6 +535,25 @@ void
 ao_radio_send_lots(ao_radio_fill_func fill);
 
 /*
+ * ao_radio_pa
+ */
+
+#if AO_RADIO_HAS_PA
+void
+ao_radio_pa_on(void);
+
+void
+ao_radio_pa_off(void);
+
+void
+ao_radio_pa_init(void);
+#else
+#define ao_radio_pa_on()
+#define ao_radio_pa_off()
+#define ao_radio_pa_init()
+#endif
+
+/*
  * Compute the packet length as follows:
  *
  * 2000 bps (for a 1kHz tone)
diff --git a/src/drivers/ao_rfpa0133.c b/src/drivers/ao_rfpa0133.c
new file mode 100644
index 00000000..70d5edba
--- /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);
+}
diff --git a/src/drivers/ao_rfpa0133.h b/src/drivers/ao_rfpa0133.h
new file mode 100644
index 00000000..2ba7f699
--- /dev/null
+++ b/src/drivers/ao_rfpa0133.h
@@ -0,0 +1,30 @@
+/*
+ * 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.
+ */
+
+#ifndef _AO_RFPA0133_H_
+#define _AO_RFPA0133_H_
+
+void
+ao_rfpa0133_on(void);
+
+void
+ao_rfpa0133_off(void);
+
+void
+ao_rfpa0133_init(void);
+
+#endif /* _AO_RFPA0133_H_ */