altos/micropeak-v2.0: Wait for the power supply to stabilize before measuring

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>

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)
 {
+       int i;
+
+       for (i = 0; i < 100000; i++)
+               ao_arch_nop();
+
        if (ao_battery_voltage() < 320)
                ao_on_battery = 1;