altos: Add button driver and sample user

Hook up the teleterra buttons and have them beep

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

8 files changed, 164 insertions, 1 deletions

diff --git a/src/cc1111/ao_arch.h b/src/cc1111/ao_arch.h
index 02e36189..23589e66 100644
--- a/src/cc1111/ao_arch.h
+++ b/src/cc1111/ao_arch.h
@@ -204,6 +204,21 @@ struct ao_adc {
 
 #define AO_ADC_RING	32
 
+/* ao_button.c */
+void
+ao_p2_isr(void);
+
+void
+ao_button_init(void);
+
+#if HAS_BUTTON_P0
+void
+ao_p0_isr(void) ao_arch_interrupt(13);
+#endif
+
+char
+ao_button_get(void) __critical;
+
 /* ao_string.c */
 
 void
diff --git a/src/cc1111/ao_button.c b/src/cc1111/ao_button.c
new file mode 100644
index 00000000..547d71ac
--- /dev/null
+++ b/src/cc1111/ao_button.c
@@ -0,0 +1,86 @@
+/*
+ * 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"
+
+volatile __xdata struct ao_fifo ao_button_fifo;
+
+#define BUTTON_1_PIN	(P0_4)
+#define BUTTON_1_MASK	(1 << 4)	/* P0_4 */
+
+#define BUTTON_2_PIN	(P2_3)
+#define BUTTON_2_MASK	(1 << 3)	/* P2_3 */
+
+#define BUTTON_3_PIN	(P2_4)
+#define BUTTON_3_MASK	(1 << 4)	/* P2_4 */
+
+static void
+ao_button_insert(char n)
+{
+	ao_fifo_insert(ao_button_fifo, n);
+	ao_wakeup(&ao_button_fifo);
+}
+
+char
+ao_button_get(void) __critical
+{
+	char	b;
+
+	while (ao_fifo_empty(ao_button_fifo))
+		ao_sleep(&ao_button_fifo);
+	ao_fifo_remove(ao_button_fifo, b);
+	return b;
+}
+
+void
+ao_p2_isr(void)
+{
+	if (P2IFG & BUTTON_2_MASK)
+		ao_button_insert(2);
+	if (P2IFG & BUTTON_3_MASK)
+		ao_button_insert(3);
+	P2IFG = 0;
+}
+
+void
+ao_p0_isr(void) ao_arch_interrupt(13)
+{
+	P0IF = 0;
+	if (P0IFG & BUTTON_1_MASK)
+		ao_button_insert(1);
+	P0IFG = 0;
+}
+
+void
+ao_button_init(void)
+{
+	/* Pins are configured as inputs with pull-up by default */
+
+	/* Enable interrupts for P2_0 - P2_4
+	 * Enable interrupts for P0_4 - P0_7
+	 * Set P2 interrupts to falling edge
+	 * Set P0 interrupts to falling edge
+	 */
+	
+	PICTL |= PICTL_P2IEN | PICTL_P0IENH | PICTL_P2ICON | PICTL_P0ICON;
+
+	/* Enable interrupts for P0 inputs */
+	IEN1 |= IEN1_P0IE;
+
+	/* Enable interrupts for P2 inputs */
+	IEN2 |= IEN2_P2IE;
+}
diff --git a/src/cc1111/ao_usb.c b/src/cc1111/ao_usb.c
index 08cb7390..35c9ac20 100644
--- a/src/cc1111/ao_usb.c
+++ b/src/cc1111/ao_usb.c
@@ -62,6 +62,9 @@ ao_usb_isr(void) __interrupt 6
 	ao_btm_isr();
 #endif
 #endif
+#if HAS_P2_ISR
+	ao_p2_isr();
+#endif
 }
 
 struct ao_usb_setup {
diff --git a/src/core/ao.h b/src/core/ao.h
index c800f1fc..43d4e0e3 100644
--- a/src/core/ao.h
+++ b/src/core/ao.h
@@ -1851,4 +1851,11 @@ ao_log_single(void);
 #define ao_xmemcmp(d,s,c) memcmp(d,s,c)
 #endif
 
+/*
+ * ao_terraui.c
+ */
+
+void
+ao_terraui_init(void);
+
 #endif /* _AO_H_ */
diff --git a/src/product/ao_teleterra_0_2.c b/src/product/ao_teleterra_0_2.c
index 05085860..b38f2907 100644
--- a/src/product/ao_teleterra_0_2.c
+++ b/src/product/ao_teleterra_0_2.c
@@ -37,5 +37,6 @@ main(void)
 	ao_radio_init();
 	ao_config_init();
 	ao_lcd_init();
+	ao_terraui_init();
 	ao_start_scheduler();
 }
diff --git a/src/product/ao_terraui.c b/src/product/ao_terraui.c
new file mode 100644
index 00000000..3885db4e
--- /dev/null
+++ b/src/product/ao_terraui.c
@@ -0,0 +1,45 @@
+/*
+ * 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"
+
+static void
+ao_terraui(void)
+{
+	for (;;) {
+		char	b = ao_button_get();
+		switch (b) {
+		case 1:
+			ao_beep_for(AO_BEEP_LOW, AO_MS_TO_TICKS(200));
+			break;
+		case 2:
+			ao_beep_for(AO_BEEP_MID, AO_MS_TO_TICKS(200));
+			break;
+		case 3:
+			ao_beep_for(AO_BEEP_HIGH, AO_MS_TO_TICKS(200));
+			break;
+		}
+	}
+}
+
+__xdata static struct ao_task ao_terraui_task;
+
+void
+ao_terraui_init(void)
+{
+	ao_add_task(&ao_terraui_task, ao_terraui, "ui");
+}
diff --git a/src/teleterra-v0.2/Makefile b/src/teleterra-v0.2/Makefile
index eda67a2a..8e4569a9 100644
--- a/src/teleterra-v0.2/Makefile
+++ b/src/teleterra-v0.2/Makefile
@@ -33,6 +33,7 @@ CORE_SRC = \
 
 CC1111_SRC = \
 	ao_beep.c \
+	ao_button.c \
 	ao_dbg.c \
 	ao_dma.c \
 	ao_led.c \
@@ -54,7 +55,8 @@ DRIVER_SRC = \
 	ao_gps_skytraq.c
 
 PRODUCT_SRC = \
-	ao_teleterra_0_2.c
+	ao_teleterra_0_2.c \
+	ao_terraui.c
 
 SRC = \
 	$(CORE_SRC) \
diff --git a/src/teleterra-v0.2/ao_pins.h b/src/teleterra-v0.2/ao_pins.h
index 671d3876..7b6f08b2 100644
--- a/src/teleterra-v0.2/ao_pins.h
+++ b/src/teleterra-v0.2/ao_pins.h
@@ -53,6 +53,10 @@
 	#define SPI_CS_ON_P0		0
 	#define M25_CS_MASK		0x04
 	#define M25_MAX_CHIPS		1
+
+	#define HAS_P2_ISR		1
+	#define HAS_BUTTON_P0		1
+	#define HAS_BUTTON_P2		1
 #endif
 
 #if DBG_ON_P1