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altos/micropeak-v2.0: Wait for the power supply to stabilize before measuring
author
Keith Packard
<keithp@keithp.com>
Tue, 18 Jun 2019 07:11:49 +0000
(
00:11
-0700)
committer
Keith Packard
<keithp@keithp.com>
Tue, 18 Jun 2019 07:11:49 +0000
(
00:11
-0700)
If we don't wait before measuring the battery, it will often read
under 3.2V right at boot time, which puts MicroPeak in flight mode
instead of USB mode.
Signed-off-by: Keith Packard <keithp@keithp.com>
src/micropeak-v2.0/ao_micropeak.c
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diff --git
a/src/micropeak-v2.0/ao_micropeak.c
b/src/micropeak-v2.0/ao_micropeak.c
index 6343be9ff2d1e54a20565791ab940e2d09e4657c..7ba5cb950c240b0084cc22d3b0cb5f908471ee3e 100644
(file)
--- a/
src/micropeak-v2.0/ao_micropeak.c
+++ b/
src/micropeak-v2.0/ao_micropeak.c
@@
-243,6
+243,11
@@
ao_hsi_init(void)
void
main(void)
{
void
main(void)
{
+ int i;
+
+ for (i = 0; i < 100000; i++)
+ ao_arch_nop();
+
if (ao_battery_voltage() < 320)
ao_on_battery = 1;
if (ao_battery_voltage() < 320)
ao_on_battery = 1;