machine.sleep(time_in_millis) does time_in_millis has some limit? not works for 6 hours value...

[josua]

Hi there,
can someone please say me, if there any limit for argument passing to machine.deepsleep()? When I pass 600000 ms to the funciton it works just nicely, SiPY sends message every 10 minutes, but when I pass 21600000 which is 6 hours, then my SiPy start to send message every 2 minutes!

# 10 min
SLEEP_TIME_10M = 600000
# 6 hours
SLEEP_TIME_6H = 21600000
.... code ....
s.send(str(sensor1.distance_in_cm()))
machine.deepsleep(SLEEP_TIME_6H)

Thanks in advance!

[livius]

@josua
I supposed then some range was reached
but i see in source code cast to uint64

STATIC mp_obj_t machine_deepsleep (uint n_args, const mp_obj_t *arg) {
    mperror_enable_heartbeat(false);
    bt_deinit(NULL);
    wlan_deinit(NULL);
    if (n_args == 0) {
        esp_deep_sleep_start();
    } else {
        esp_deep_sleep((uint64_t)(mp_obj_get_int(arg[0]) * 1000));
    }
}

i do not known C but
is this ok?
(uint64_t)(mp_obj_get_int(arg[0]) * 1000)
or it should be?
(uint64_t)mp_obj_get_int(arg[0]) * 1000

[jmarcelino]

@livius
You are right of course. I guess someone should file it with github let me know if you want me to do it.

You can see the problem with this small C test code:

#include <stdint.h>

int in32 = 21600000;

void castresult () {
        uint64_t out64 = 0;
        out64 = (uint64_t) (in32 * 1000);
}

void casttime () {
        uint64_t out64 = 0;
        out64 = (uint64_t)in32 * 1000;
}

Compile with: xtensa-esp32-elf-gcc -c test.c
then dump the generated Xtensa assembly code: xtensa-esp32-elf-objdump -D test.o and the difference - and problem - between the two becomes obvious.

00000000 <castresult>:
   0:   006136          entry   a1, 48
   3:   017d            mov.n   a7, a1
   5:   000021          l32r    a2, fffc0008 <casttime+0xfffbffd8>
   8:   000031          l32r    a3, fffc0008 <casttime+0xfffbffd8>
   b:   0729            s32i.n  a2, a7, 0
   d:   1739            s32i.n  a3, a7, 4
   f:   000021          l32r    a2, fffc0010 <casttime+0xfffbffe0>
  12:   0238            l32i.n  a3, a2, 0
  14:   032d            mov.n   a2, a3
  16:   1122b0          slli    a2, a2, 5
  19:   c02230          sub     a2, a2, a3
  1c:   1122e0          slli    a2, a2, 2
  1f:   223a            add.n   a2, a2, a3
  21:   1122d0          slli    a2, a2, 3
  24:   0729            s32i.n  a2, a7, 0
  26:   312f20          srai    a2, a2, 31
  29:   1729            s32i.n  a2, a7, 4
  2b:   f03d            nop.n
  2d:   f01d            retw.n
        ...

00000030 <casttime>:
  30:   006136          entry   a1, 48
  33:   017d            mov.n   a7, a1
  35:   000081          l32r    a8, fffc0038 <casttime+0xfffc0008>
  38:   000091          l32r    a9, fffc0038 <casttime+0xfffc0008>
  3b:   0789            s32i.n  a8, a7, 0
  3d:   1799            s32i.n  a9, a7, 4
  3f:   000061          l32r    a6, fffc0040 <casttime+0xfffc0010>
  42:   0668            l32i.n  a6, a6, 0
  44:   064d            mov.n   a4, a6
  46:   316f60          srai    a6, a6, 31
  49:   065d            mov.n   a5, a6
  4b:   e8a362          movi    a6, 0x3e8
  4e:   828560          mull    a8, a5, a6
  51:   060c            movi.n  a6, 0
  53:   826460          mull    a6, a4, a6
  56:   886a            add.n   a8, a8, a6
  58:   e8a362          movi    a6, 0x3e8
  5b:   829460          mull    a9, a4, a6
  5e:   a23460          muluh   a3, a4, a6
  61:   092d            mov.n   a2, a9
  63:   483a            add.n   a4, a8, a3
  65:   043d            mov.n   a3, a4
  67:   0729            s32i.n  a2, a7, 0
  69:   1739            s32i.n  a3, a7, 4
  6b:   0729            s32i.n  a2, a7, 0
  6d:   1739            s32i.n  a3, a7, 4
  6f:   f03d            nop.n
  71:   f01d            retw.n

[livius]

@jmarcelino
Do you know what repository is now valid?
https://github.com/pycom/pycom-micropython
https://github.com/pycom/pycom-micropython-sigfox
or current merging
https://github.com/pycom/pycom-micropython-censis

[jmarcelino]

@livius
I think the current one is https://github.com/pycom/pycom-micropython-sigfox

You'll be the very first issue ;-)

[livius]

@jmarcelino
created
https://github.com/pycom/pycom-micropython-sigfox/issues/1
and also pull
https://github.com/pycom/pycom-micropython-sigfox/pull/2