altos: Restructure altos build to prepare for multi-arch support

Split out sources into separate directories:

	core:		architecture and product independent bits
	cc1111:		cc1111-specific code
	drivers:	architecture independent drivers
	product:	product-specific sources and Makefile fragments
	util:		scripts for building stuff

This should have no effect on the built products, but testing is encouraged

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

1 files changed, 52 insertions, 0 deletions

diff --git a/src/cc1111/ao_beep.c b/src/cc1111/ao_beep.c
new file mode 100644
index 00000000..3642f4c6
--- /dev/null
+++ b/src/cc1111/ao_beep.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright © 2009 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"
+
+void
+ao_beep(uint8_t beep)
+{
+	if (beep == 0) {
+		P2_0 = 0;
+		P2SEL = (P2SEL & ~P2SEL_SELP2_0_MASK) | P2SEL_SELP2_0_GPIO;
+		T4CTL = 0;
+	} else {
+		P2SEL = (P2SEL & ~P2SEL_SELP2_0_MASK) | P2SEL_SELP2_0_PERIPHERAL;
+		T4CC0 = beep;
+		T4CTL = TxCTL_DIV_32 | TxCTL_MODE_MODULO | TxCTL_START;
+	}
+}
+
+void
+ao_beep_for(uint8_t beep, uint16_t ticks) __reentrant
+{
+	ao_beep(beep);
+	ao_delay(ticks);
+	ao_beep(0);
+}
+
+void
+ao_beep_init(void)
+{
+	/* Our beeper is on P2_0, which is hooked to timer 4 using
+	 * configuration alternative 2
+	 */
+	P2_0 = 0;
+	P2SEL = (P2SEL & ~P2SEL_SELP2_0_MASK) | P2SEL_SELP2_0_GPIO;
+	PERCFG = (PERCFG & ~PERCFG_T4CFG_ALT_MASK) | PERCFG_T4CFG_ALT_2;
+	T4CCTL0 = TxCCTLy_CMP_TOGGLE|TxCCTLy_CMP_MODE_ENABLE;
+}