From: Keith Packard <keithp@keithp.com>
Date: Tue, 19 Apr 2011 17:25:47 +0000 (-0700)
Subject: altos: Add delays to bt startup sequence
X-Git-Tag: 0.9.3~57
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=8de9d3cbfcd1db7b554fb761296a8de09aafc8c3

altos: Add delays to bt startup sequence

The BT device takes a few seconds after power-up before it is ready to
receive commands.

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

diff --git a/src/ao_btm.c b/src/ao_btm.c
index 71907f86..4f56c382 100644
--- a/src/ao_btm.c
+++ b/src/ao_btm.c
@@ -249,6 +249,8 @@ ao_btm(void)
 	ao_btm_stdio = ao_num_stdios - 1;
 	ao_btm_echo(0);
 
+	ao_delay(AO_SEC_TO_TICKS(3));
+
 	/*
 	 * The first time we connect, the BTM-180 comes up at 19200 baud.
 	 * After that, it will remember and come up at 57600 baud. So, see
@@ -256,6 +258,7 @@ ao_btm(void)
 	 * then tell it to switch to 57600 from 19200 baud.
 	 */
 	while (!ao_btm_try_speed(AO_SERIAL_SPEED_57600)) {
+		ao_delay(AO_SEC_TO_TICKS(1));
 		if (ao_btm_try_speed(AO_SERIAL_SPEED_19200))
 			ao_btm_cmd("ATL4\r");
 		ao_delay(AO_SEC_TO_TICKS(1));