From: Keith Packard <keithp@keithp.com>
Date: Sun, 24 Oct 2010 22:36:06 +0000 (-0700)
Subject: altos: control TD GPIO pins directly with the 'o' command
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=02373557cc112682139863fb20432287f5755780

altos: control TD GPIO pins directly with the 'o' command

This adds direct access to the teledongle GPIO pins for output.

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

diff --git a/src/Makefile.proto b/src/Makefile.proto
index b23eb257..0c2a2392 100644
--- a/src/Makefile.proto
+++ b/src/Makefile.proto
@@ -166,11 +166,15 @@ TT_SRC = \
 TD_MAIN_SRC = \
 	ao_teledongle.c
 
+TD_DRIVER_SRC = \
+	ao_pins.c
+
 TD_SRC = \
 	$(ALTOS_SRC) \
 	$(ALTOS_DRIVER_SRC) \
 	$(TELE_RECEIVER_SRC) \
 	$(TELE_COMMON_SRC) \
+	$(TD_DRIVER_SRC) \
 	$(TD_MAIN_SRC)
 
 include Makefile.defs
diff --git a/src/ao_pins.c b/src/ao_pins.c
new file mode 100644
index 00000000..80d647c1
--- /dev/null
+++ b/src/ao_pins.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright © 2010 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_pins.h"
+
+static void
+ao_pins_enable(void)
+{
+#if defined(TELEDONGLE_V_0_2)
+	P0DIR = 0xff;
+	P1DIR = 0x3f;
+	P2DIR = 0x1f;
+#elif defined(TELEDONGLE_V_0_1)
+	P0DIR = 0xff;
+	P1DIR = 0x3f;
+	P2DIR = 0x1f;
+#else
+#error "ao_pins not configured for this device"
+#endif
+}
+
+static void
+ao_pins_set(void)
+{
+	uint8_t	reg, val;
+
+	ao_pins_enable();
+	for (;;) {
+		ao_cmd_white();
+		if (ao_cmd_lex_c == '\n')
+			break;
+		ao_cmd_hex();
+		reg = ao_cmd_lex_i;
+		ao_cmd_hex();
+		val = ao_cmd_lex_i;
+		if (ao_cmd_status != ao_cmd_success)
+			break;
+		switch (reg) {
+		case 0:
+			P0 = val;
+			break;
+		case 1:
+			P1 = val;
+			break;
+		case 2:
+			P2 = val;
+			break;
+		}
+	}
+}
+
+__code struct ao_cmds ao_pins_cmds[] = {
+	{ 'o',	ao_pins_set,	"o <0|1|2> <hex value> ...          Set GPIO output" },
+	{ 0,    ao_pins_set,    0 },
+};
+
+void
+ao_pins_init(void)
+{
+	ao_cmd_register(&ao_pins_cmds[0]);
+}
diff --git a/src/ao_teledongle.c b/src/ao_teledongle.c
index 505dc0cb..e1f3b085 100644
--- a/src/ao_teledongle.c
+++ b/src/ao_teledongle.c
@@ -33,6 +33,7 @@ main(void)
 	ao_radio_init();
 	ao_packet_slave_init();
 	ao_packet_master_init();
+	ao_pins_init();
 #if HAS_DBG
 	ao_dbg_init();
 #endif