altos: Add initial TeleBT code

Prototyping with a TeleMetrum v0.1 board and a serial link to a
bluetooth module.

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

1 files changed, 72 insertions, 0 deletions

diff --git a/src/ao_btm.c b/src/ao_btm.c
new file mode 100644
index 00000000..224d3e81
--- /dev/null
+++ b/src/ao_btm.c
@@ -0,0 +1,72 @@
+/*
+ * 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"
+
+uint8_t	ao_btm_enable;
+extern volatile __xdata struct ao_fifo	ao_usart1_rx_fifo;
+
+void
+ao_btm(void)
+{
+	char	c;
+	while (ao_btm_enable) {
+		c = ao_serial_pollchar();
+		if (c != AO_READ_AGAIN)
+			ao_usb_putchar(c);
+		else {
+			ao_usb_flush();
+			ao_sleep(&ao_usart1_rx_fifo);
+		}
+	}
+	ao_exit();
+}
+
+__xdata struct ao_task	ao_btm_task;
+
+static void
+ao_btm_forward(void)
+{
+	char c;
+	ao_btm_enable = 1;
+	flush();
+	ao_add_task(&ao_btm_task, ao_btm, "btm");
+
+	while ((c = ao_usb_getchar()) != '~') {
+		if (c == '\n') c = '\r';
+		ao_serial_putchar(c);
+	}
+	ao_btm_enable = 0;
+	while (ao_btm_task.wchan) {
+		ao_wakeup(&ao_usart1_rx_fifo);
+		ao_delay(AO_MS_TO_TICKS(10));
+	}
+}
+
+__code struct ao_cmds ao_btm_cmds[] = {
+	{ ao_btm_forward,	"B <data>\0BTM serial link." },
+	{ 0, NULL },
+};
+
+
+void
+ao_btm_init (void)
+{
+	ao_serial_init();
+	ao_serial_set_speed(AO_SERIAL_SPEED_19200);
+	ao_cmd_register(&ao_btm_cmds[0]);
+}