Deepsleep Testing

[ssmith]

Trying to test out deepsleep and it seems to work the first time but not after that. I see the the LoPy reboots with a DEEPSLEEP_RESET but after that the code seems to run a not go into deepsleep.

from network import LoRa,  WLAN
import socket
import machine
import time
import binascii

#Setup LORA
#lora = LoRa(mode=LoRa.LORA, frequency=918000000, power_mode=LoRa.ALWAYS_ON, tx_power=14, bandwidth=LoRa.BW_125KHZ, sf=12, preamble=8, coding_rate=LoRa.CODING_4_8, tx_iq=False, rx_iq=False)
lora = LoRa(mode=LoRa.LORA, frequency=918000000, power_mode=LoRa.ALWAYS_ON, tx_power=14, bandwidth=LoRa.BW_125KHZ, sf=12, preamble=8, coding_rate=LoRa.CODING_4_8, tx_iq=False, rx_iq=False)
lora.init(mode=LoRa.LORA, frequency=918000000, power_mode=LoRa.ALWAYS_ON, tx_power=14, bandwidth=LoRa.BW_125KHZ, sf=12, preamble=8, coding_rate=LoRa.CODING_4_8, tx_iq=False, rx_iq=False)

#Setup WLAN
wlan = WLAN(mode=WLAN.STA)
wlan.init(antenna=WLAN.INT_ANT,  power_save = False)

#Setup RECV socket
s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)
sn = machine.unique_id()
sn = binascii.hexlify(sn)[-6:]
sn = sn.decode('utf8')
print(sn)
wlan.connect("XXX", auth=(WLAN.WPA2, "XXX"), timeout=5000)

while not wlan.isconnected(): 
     machine.idle()
print("Connected to Wifi\n")

#Start Send
count =0 #test count
print("BOOT")

while True:
    s.setblocking(True)
    payload = str(count)
    payload = "SN: {} -- MSG: {}".format(sn, count)
    s.send(payload)
 
    print("SN: {}  --  Count: {}  --  Payload: {}".format(sn, count, payload))
    machine.deepsleep(1000)
    count += 1

I get the following on the console when I run this code.

Running main.py
I (64587) wifi: sleep disable
I (64601) wifi: sleep disable
00b856
I (64729) wifi: n:1 0, o:6 0, ap:255 255, sta:1 0, prof:6
I (65717) wifi: state: init -> auth (b0)
I (65719) wifi: state: auth -> assoc (0)
I (65726) wifi: state: assoc -> run (10)
I (65750) wifi: connected with WaterR8, channel 1
Connected to Wifi

BOOT
SN: 00b856  --  Count: 0  --  Payload: SN: 00b856 -- MSG: 0
I (67508) wifi: state: run -> init (0)
I (67508) wifi: n:1 0, o:1 0, ap:255 255, sta:1 0, prof:6
E (67509) wifi: esp_wifi_connect 806 wifi not start
ets Jun  8 2016 00:22:57

rst:0x5 (DEEPSLEEP_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:QIO, clock div:2
load:0x3fff9010,len:8
load:0x3fff9018,len:248
load:0x40078000,len:4056
load:0x4009fc00,len:920
entry 0x4009fde4
I (1553) wifi: wifi firmware version: 2a22b2d
I (1568) wifi: pp_task_hdl : 3ffd6fd8, prio:23, stack:8192
I (1568) wifi: Init lldesc rx mblock:10
I (1568) wifi: Init lldesc rx ampdu len mblock:7
I (1570) wifi: Init lldesc rx ampdu entry mblock:4
I (1575) wifi: sleep disable
I (2564) wifi: frc2_timer_task_hdl:3ffdd028, prio:22, stack:2048
I (2567) wifi: mode : softAP (24:0a:c4:00:b8:57)
I (2667) wifi: mode : sta (24:0a:c4:00:b8:56)
I (2668) wifi: sleep disable
I (2684) wifi: sleep disable
00b856
SN: 00b856  --  Count: 0  --  Payload: SN: 00b856 -- MSG: 0
SN: 00b856  --  Count: 1  --  Payload: SN: 00b856 -- MSG: 1
SN: 00b856  --  Count: 2  --  Payload: SN: 00b856 -- MSG: 2```

[bucknall]

Hi @ssmith

The argument passed into machine.deepsleep() is in milliseconds so your board will only be sleeping for 1 second!

This might be leading you to think the board isn't going into deepsleep! Also be aware that your code will restart from main.py when you initiate deepsleep.

Hope this helps!

[ssmith]

I only see 1 (DEEPSLEEP_REST) in the console. Shouldn't I see a (DEEPSLEEP_RESET) every time it reboots? I also changed the timeout to 50 seconds and the first pass see a 50 second delay before the first reboot but then the code just runs through the while loop with no delays. You can see the console output printing each message with an incrementing counter. If it was restarting main.py wouldn't the counter get reset also?

[ssmith]

@bucknall
I figured out what was going on here. I was running the program from PyMkr. I would run correctly the first time but after a reboot it ran the code from /flash which wasn't updated.

No I can move on to power testing.

[jasonriedy]

@bucknall I'm seeing a general theme about debugging power usage during "deep sleep." What tooling is available to let everyone compare against the same baseline?

[bucknall]

Hi @jasonriedy

There's nothing in the way of tooling at the moment but I'll have a chat with the team to see about putting out a benchmark script to verify power efficiency. Will let you know when I've heard back!