Dhtxx exception error

Toit

#Dhtxx exception error

Thread channel in help

~~boss~~ 09/08/2025 04:05 AM

Deadline exceeded

~~boss~~ 09/08/2025 04:06 AM

Code:

~~boss~~ 09/08/2025 04:08 AM

// Copyright (C) 2022 Toitware ApS.
// Use of this source code is governed by a Zero-Clause BSD license that can
// be found in the EXAMPLES_LICENSE file.

import dhtxx
import gpio

GPIO-PIN-NUM ::= 32

main:
  pin := gpio.Pin GPIO-PIN-NUM
  driver := dhtxx.Dht22 pin
  // On some versions of Toit/ESP-IDF it is necessary to sleep a bit before
  // reading the sensor for the first time.
  sleep --ms=300

  (Duration --s=1).periodic:
    print driver.read

~~boss~~ 09/08/2025 04:09 AM

floitsch 09/08/2025 07:38 AM

From what I can see the wiring isn't correct.
I can see multiple issues:
- You mixed up the orientation of the DHT22 sensor. GND is connected to VCC, GND to VCC, ...
- The + bus on the breadboard isn't connected to 3.3V. This (hopefully) saved your DHT22, as they are prone to burning out if connected the wrong way. That has happened multiple times on the DHT11, where the boards have different pin outs.
- The DATA pin is connected to pin 17(?) and not 32 as you have in your code.

The most important thing is to triple check the pinout of the DHT22 you have. It looks to me like it's just the sensor and not a module. If it has 4 pins that's likely the case. If it has 3, then it's guaranteed to be a module.

~~boss~~ 09/11/2025 04:00 PM

Thanks

~~boss~~ 09/11/2025 04:02 PM

And how can I make the sensor read first and export to datacake ,determine if value is more than 21 then do boo and if less do baa and doing 2 of this task simultaneously

~~boss~~ 09/11/2025 04:22 PM

Can I just use latch? Or just 1 task works

~~boss~~ 09/11/2025 04:24 PM

If latch works how can I loop doing task 1 then task 2 forever

floitsch 09/11/2025 07:49 PM

Can you provide some pseudo code of what you are trying to do?
Something like

while true:
  read new temperature
  signal to others 
  sleep 5s
--
in parallel: 
- wait for new values, and upload each one to datacake
- blink led. If current value is below, blink fast otherwise slow
- ....

I'm pretty sure my example is not what you try to do, but if you provide your pseudo code I can probably figure out what you should use

~~boss~~ 09/12/2025 02:16 AM

This is how it should work:
1.sensor read
2.pubblish to datacake
3.determine value
4.if value >… then relay on

~~boss~~ 09/12/2025 02:17 AM

But this one does it only one time

~~boss~~ 09/12/2025 02:18 AM

~~boss~~ 09/12/2025 02:23 AM

import datacake
import dhtxx
import gpio
import monitor
latch := monitor.Latch
sensor ::= 18

main:
  task:: producer-task-code
  task:: consumer-task-code
  
producer-task-code:
    client := datacake.connect
    pin := gpio.Pin sensor
    driver := dhtxx.Dht22 pin
    sleep --ms=3000
    result := driver.read-temperature
    temperature := datacake.Float "TEMPERATURE" --precision=1
    temperature.publish client result
    print "task one finished"
    latch.set result
consumer-task-code:
  temp := latch.get
  if temp == 21: print "led 1 on"
  if temp > 21:
    print "led 2 on"

floitsch 09/12/2025 07:25 AM

A latch is something you can only set once.
You can either use a channel (a pipe of fixed size), or a signal (which would just state that there is something somewhere, like in a shared variable/object).

~~boss~~ 09/12/2025 07:26 AM

~~boss~~ 09/12/2025 07:31 AM

Why it showed up the last error again? Of datacake

~~boss~~ 09/12/2025 07:32 AM

Jag pkg install won’t work

~~boss~~ 09/12/2025 07:33 AM

sutida@MacBook-Air-khxng-pleng src % jag container install datacake service.toit -D datacake.api.token=f206ee24cf21ca04429ee472b1dbbe6054110822 -D datacake.device.id=esp32 -D datacake.product.slug=esp32-34
Installing container 'datacake' from 'service.toit' on 'wizardly-company' ...
/Users/sutida/Desktop/python main/project/.packages/github.com/kasperl/toit-datacake/0.1.2/package.lock:7:10: error: Package 'github.com/toitware/mqtt-2.1.1' not found
    url: github.com/toitware/mqtt
         ^~~~~~~~~~~~~~~~~~~~~~~~
/Users/sutida/Desktop/python main/project/.packages/github.com/kasperl/toit-datacake/0.1.2/package.lock:11:10: error: Package 'github.com/toitware/toit-cert-roots-1.4.0' not found
    url: github.com/toitware/toit-cert-roots
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
service.toit:11:8: error: Package 'toit-cert-roots' for prefix 'certificate-roots' not found
import certificate_roots
       ^~~~~~~~~~~~~~~~~
service.toit:12:8: error: Package 'mqtt' for prefix 'mqtt' not found
import mqtt
       ^~~~
service.toit:13:8: error: Package 'mqtt' for prefix 'mqtt' not found
import mqtt.packets as mqtt
       ^~~~

Compilation failed

floitsch 09/12/2025 07:35 AM

Maybe remove the api-token from the code here (or invalidate it on the datacake server). It's going to be copied to help.toit.io(edited)

floitsch

Maybe remove the api-token from the code here (or invalidate it on the datacake server). It's going to be copied to help.toit.io(edited)

~~boss~~ 09/12/2025 07:36 AM

How?

floitsch 09/12/2025 07:36 AM

You should be able to edit posts in discord.

floitsch 09/12/2025 07:36 AM

(just here)

OP~~boss~~

```sutida@MacBook-Air-khxng-pleng src % jag container install datacake service.toit -D datacake.api.token=f206ee24cf21ca04429ee472b1dbbe6054110822 -D datacake.device.id=esp32 -D da...

floitsch 09/12/2025 07:38 AM

can you print your pwd?

~~boss~~ 09/12/2025 07:39 AM

You mean directory?

floitsch 09/12/2025 07:40 AM

I'm guessing you are inside /Users/sutida/Desktop/python main/project/.packages/github.com/kasperl/toit-datacake/0.1.2/src

~~boss~~ 09/12/2025 07:40 AM

Yess

floitsch 09/12/2025 07:40 AM

Not a good idea.
The .packages directory is where the packages for your project are.

floitsch 09/12/2025 07:41 AM

looking up the easiest way to run service for you. just a sec.

floitsch 09/12/2025 07:42 AM

So the easiest is probably:
create a datacake.toit in your project /Users/sutida/Desktop/python main/project.
with the following content:

import datacake.service

main:
  service.main

Then run that instead.

floitsch 09/12/2025 07:43 AM

You are basically just calling the main from the service, but from within your project, where everything (dependencies...) are correctly set up.

floitsch 09/12/2025 07:44 AM

If you run from withing something inside the .packages directory, it will think that the .packages/github.com/kasperl/toit-datacake/0.1.2/ is its own project (which it fundamentally is). And that project isn't set up yet as nobody ran a pkg install there.

floitsch 09/12/2025 07:44 AM

You can run the local datacake.toit with the same defines as you wrote above.

OP~~boss~~

```sutida@MacBook-Air-khxng-pleng src % jag container install datacake service.toit -D datacake.api.token=f206ee24cf21ca04429ee472b1dbbe6054110822 -D datacake.device.id=esp32 -D da...

floitsch 09/12/2025 07:45 AM

I would still obfuscate/replace the API-token in your code snippet, unless it's not valid.

~~boss~~ 09/12/2025 07:48 AM

jag container install datacake datacake.toit -D datacake.api.token=f206ee24cf21ca04429ee472b1dbbe6054110822 -D datacake.device.id=esp32 -D datacake.product.slug=esp32-34
Installing container 'datacake' from 'datacake.toit' on 'wizardly-company' ...
<pkg:toit-datacake>/service.toit:69:7: error: Missing implementations for interface methods
class DatacakeServiceProvider extends ServiceProvider implements ServiceHandler:
      ^~~~~~~~~~~~~~~~~~~~~~~
<sdk>/system/services.toit:315:3: note: Missing implementation for 'handle'
  handle index/int arguments/any --gid/int --client/int -> any
  ^~~~~~
Compilation failed

~~boss~~ 09/12/2025 07:49 AM

It showed this

floitsch 09/12/2025 07:50 AM

@bitphlipphar

does the package need updating?

floitsch 09/12/2025 07:51 AM

Fwiw, datacake uses MQTT, so you could just talk directly to it too.
The datacake package just makes things more elegant.

floitsch 09/12/2025 07:53 AM

I will see if I can update the package this weekend.

floitsch 09/12/2025 07:57 AM

I wouldn't be surprised if Kasper just didn't release the current version. Looking at the code, I don't see that problem.
If you are up for it:

git clone https://github.com/kasperl/toit-datacake.git
cd toit-datacake
jag pkg install
jag container install datacake src/service.toit -D ...
cd ..

In theory that would install the service from the latest sources. (Note that we can use the service.toit file directly this time, as we created a separate directory and did pkg install in it).

~~boss~~ 09/12/2025 08:11 AM

Are there any alternative to datacake that is easy to use?( In case which the new version didn't come in weekend)

OP~~boss~~

Are there any alternative to datacake that is easy to use?( In case which the new version didn't come in weekend)

floitsch 09/12/2025 08:14 AM

For uploading data?

~~boss~~ 09/12/2025 08:14 AM

Yes

floitsch 09/12/2025 08:15 AM

You have multiple options:
google sheets, Supabase, Mqtt with Adafruit, ...(edited)

floitsch 09/12/2025 08:15 AM

https://docs.toit.io/tutorials/#network

~~boss~~ 09/12/2025 08:15 AM

Google sheets?

floitsch 09/12/2025 08:15 AM

If you want to. yes.

floitsch 09/12/2025 08:15 AM

I haven't tried the tutorial in a while, but I think it should still work fine.

floitsch 09/12/2025 08:16 AM

That's, obviously, not something you can use in production with 100s of devices, but if you just have a few devices at home, Google sheets is often easy.

~~boss~~ 09/12/2025 08:17 AM

I think I should try it

~~boss~~ 09/12/2025 08:17 AM

Is the updating time fast when compared to datacake?

floitsch 09/12/2025 08:17 AM

Let me know if the tutorial needs updating. Maybe some button names or so (in the Google UI) have changed. I'm pretty sure the functionality is still there.

floitsch 09/12/2025 08:18 AM

From the device's point of view, it just does an https post. That's pretty efficient.

~~boss~~ 09/12/2025 10:37 AM

how can i upload data to new row not replace row one to data?

~~boss~~ 09/12/2025 10:37 AM

on google sheets with toit

floitsch 09/12/2025 10:38 AM

It should already do that: sheet.appendRow([new Date(data.timestamp), data.temperature, data.humidity]);

floitsch 09/12/2025 10:38 AM

appendRow

should add new rows.

~~boss~~ 09/12/2025 10:40 AM

it works now.

~~boss~~ 09/12/2025 01:28 PM

esp.toit:4:8: error: Package for prefix 'certificate-roots' not found
import certificate_roots

floitsch 09/12/2025 01:31 PM

did you install the package?

jag pkg install github.com/toitware/toit-cert-roots@v1

~~boss~~ 09/13/2025 03:30 PM

I have just found new problem with dhtxx

~~boss~~ 09/13/2025 03:31 PM

When I was trying to read humidity then temperature into different variable it shows exception error

floitsch 09/13/2025 03:31 PM

can you show the error?

~~boss~~ 09/13/2025 03:33 PM

EXCEPTION error. 
insufficient signals from DHT
  0: Driver.read-data-no-catch_ <pkg:toit-dhtxx>/driver_.toit:128:7
  1: Driver.read-data_.<block>.<block>.<block>.<block> <pkg:toit-dhtxx>/driver_.toit:91:20
  2: Driver.read-data_.<block>.<block>.<block> <pkg:toit-dhtxx>/driver_.toit:89:32
  3: Task_.with-deadline_.<block> <sdk>/core/task.toit:223:16
  4: Task_.with-deadline_      <sdk>/core/task.toit:217:3
  5: with-timeout              <sdk>/core/utils.toit:189:24
  6: with-timeout              <sdk>/core/utils.toit:181:10
  7: Driver.read-data_.<block>.<block> <pkg:toit-dhtxx>/driver_.toit:89:9
  8: catch.<block>             <sdk>/core/exceptions.toit:124:10
  9: catch                     <sdk>/core/exceptions.toit:122:1
 10: catch                     <sdk>/core/exceptions.toit:73:10
 11: Driver.read-data_.<block> <pkg:toit-dhtxx>/driver_.toit:88:7
 12: SmallInteger_.repeat      <sdk>/core/numbers.toit:1288:3
 13: Driver.read-data_         <pkg:toit-dhtxx>/driver_.toit:87:14
 14: Driver.read-temperature   <pkg:toit-dhtxx>/driver_.toit:63:31
 15: main.<block>              test.toit:19:18
 16: Duration.of               <sdk>/core/time.toit:221:10
 17: Duration.periodic         <sdk>/core/time.toit:276:19
 18: main                      test.toit:17:20
****************

~~boss~~ 09/13/2025 03:34 PM

But when I use driver.read it works like normal

floitsch 09/13/2025 03:34 PM

Apparently the esp32 wasn't able to receive data from the sensor.
I think it usually tries 3 times, but apparently that didn't work.

floitsch 09/13/2025 03:34 PM

Is this happening all the time?

~~boss~~ 09/13/2025 03:34 PM

Yes

floitsch 09/13/2025 03:34 PM

interesting.
Could you put a sleep between your first and second read?

floitsch 09/13/2025 03:34 PM

maybe we are not giving the sensor enough time.

~~boss~~ 09/13/2025 03:34 PM

I am trying that.

floitsch 09/13/2025 03:35 PM

Also: if you need both anyway, consider using read. That gives you a DhtResult which contains both values.

~~boss~~ 09/13/2025 03:36 PM

Oh it worked

~~boss~~ 09/13/2025 03:36 PM

I just need to sleep it for a little because sensor has a delayed time to read

floitsch 09/13/2025 03:36 PM

Ok. So that means that we need to put some code in there to avoid reads that are too close (timewise) to each other.

floitsch 09/13/2025 03:37 PM

As I said: use read (instead of read-temperature and read-humidity) to get both at the same time. Then you don't need any sleep.

~~boss~~ 09/13/2025 03:38 PM

But how can I store them in 2 different variables?

floitsch 09/13/2025 03:38 PM

result := sensor.read
temperature := result.temperature
humidity := result.humidity

~~boss~~ 09/13/2025 03:38 PM

Thanks

~~boss~~ 09/13/2025 03:48 PM

Are there any ways to round float.(edited)

floitsch 09/13/2025 03:50 PM

Round how? (The initial "no" was a fat-finger response from Android)(edited)

~~boss~~ 09/13/2025 03:51 PM

So I need to stringtify it and cut it?

~~boss~~ 09/13/2025 03:52 PM

Like 20.1234566789737 to 20.12

floitsch 09/13/2025 03:52 PM

So you want something like to-string --fixed?
Unfortunately that's not implemented yet.
A bit embarrassing, since I published a paper on how to do it efficiently...

floitsch 09/13/2025 03:54 PM

The easiest is (x * 100).to-int or .round and then insert the dot. (Paying attention to the 0)

floitsch 09/13/2025 03:55 PM

Alternatively I would just send the multiplied integer and let the Google sheet transform it back to a float

floitsch

The easiest is (x * 100).to-int or .round and then insert the dot. (Paying attention to the 0)

~~boss~~ 09/13/2025 04:25 PM

This rounded the output has no decimal (25.3830 to 25)(edited)

floitsch 09/13/2025 04:26 PM

If you multiply with 100 first, you should have more digits than just 25.

~~boss~~ 09/13/2025 04:27 PM

temp := driver.read-temperature
            temp2 := ((temp*10000).round)
            sleep --ms=500
            humid:= driver.read-humidity
            humid2 := ((humid*10000).round)
            print "$((temp2/10000).to-float) $((humid2/10000).to-float)"

~~boss~~ 09/13/2025 04:28 PM

25.0 53.0
25.0 53.0
24.0 53.0
24.0 53.0
24.0 53.0
24.0 53.0
24.0 53.0
24.0 53.0
24.0 53.0
24.0 53.0
24.0 53.0

~~boss~~ 09/13/2025 04:28 PM

^^output

floitsch 09/13/2025 04:28 PM

int/int -> int.

floitsch 09/13/2025 04:29 PM

so you would need to temp2/10000.0.

floitsch 09/13/2025 04:29 PM

but once you convert back to a float you will end up again with long numbers.

floitsch 09/13/2025 04:30 PM

the current to-string algorithm doesn't pick the shortest string representation of a floating point number.

~~boss~~ 09/13/2025 04:31 PM

I turned it back Float because I need 2 decimals

floitsch 09/13/2025 04:31 PM

as I said: just insert the dot.

~~boss~~ 09/13/2025 04:32 PM

Insert the dot?

floitsch 09/13/2025 04:33 PM

temp2 := (temp * 100).round
str := temp2.to-string
if temp2 != 0:
  str = "$(str[..str.size - 2]).$str[str.size - 2..]"

floitsch 09/13/2025 04:33 PM

Or send the multiplied number to the server. If you don't need to print it right now, let Google sheets do the division.

~~boss~~ 09/13/2025 04:35 PM

~~boss~~ 09/14/2025 04:31 AM

Why does this code make relay on for ~~10 sec and off for 10 sec

~~boss~~ 09/14/2025 04:31 AM

import http
import dhtxx
import gpio
import net
import certificate-roots
sensor ::= 18
relay-pump ::= 4
relay-fan ::= 5
URL ::= "https://script.google.com/macros/s/AKfycbzGpAen9NMdYgqbyilihGGVSC6IfYVyuz0mc-dlelItSFaq8DwnfSLUGZucXEEUdPFttw/exec"
main:
        pin := gpio.Pin sensor --output
        pump := gpio.Pin relay-pump --output
        fan := gpio.Pin relay-fan --output
        driver := dhtxx.Dht22 pin
        network := net.open
        client := http.Client.tls network
        certificate-roots.install-common-trusted-roots
        while true:
            sleep --ms=500
            temp := driver.read-temperature
            sleep --ms=500
            humid:= driver.read-humidity
            response := client.post-json --no-follow-redirects --uri=URL {"timestamp": Time.now.utc.to-iso8601-string,"temperature": temp,"humidity": humid,}
            if humid > 50:
                fan.set 1
                pump.set 0
                sleep --ms=11000
            if humid < 40 and temp > 29.4:
                pump.set 1
                fan.set 1
                sleep --ms=11000
            else:
                pump.set 0
                fan.set 0
                sleep --ms=11000

~~boss~~ 09/14/2025 04:31 AM

The conditions is second condition

floitsch 09/15/2025 08:38 AM

Are you sure you don't need an else if for the humid < 40 part?
Currently, if the humid > 50 you set the fan and sleep 10s. Then if checks for humid < 40 which it isn't, and therefore enters the else branch, stopping the fan for 10s.

105 messages in total