Can not add any devices or widgets

shramik_salgaonkar · May 19, 2020, 1:23pm

do you know python programming?

MaxM · May 19, 2020, 1:24pm

Bassics, but do you mean the Example-03?

shramik_salgaonkar · May 19, 2020, 1:55pm

this code works for ads1115, you need to modify it for ads1015 (i guess you know this much basics)

#!/usr/bin/env python
import Adafruit_ADS1x15
import cayenne.client
import time

# Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
MQTT_USERNAME = "MQTT_USERNAME"
MQTT_PASSWORD = "MQTT_PASSWORD"
MQTT_CLIENT_ID = "MQTT_CLIENT_ID"

# The callback for when a message is received from Cayenne.


def on_message(message):
    print("message received: " + str(message))
    # If there is an error processing the message return an error string, otherwise return nothing.


client = cayenne.client.CayenneMQTTClient()
client.on_message = on_message
client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID)
# For a secure connection use port 8883 when calling client.begin:
# client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, port=8883, loglevel=logging.INFO)

i = 0
timestamp = 0

# Simple demo of reading each analog input from the ADS1x15 and printing it to
# the screen.
# Author: Tony DiCola
# License: Public Domain

# Import the ADS1x15 module.


# Create an ADS1115 ADC (16-bit) instance.
# adc = Adafruit_ADS1x15.ADS1115()

# Or create an ADS1015 ADC (12-bit) instance.
adc = Adafruit_ADS1x15.ADS1015()

# Note you can change the I2C address from its default (0x48), and/or the I2C
# bus by passing in these optional parameters:
# adc = Adafruit_ADS1x15.ADS1015(address=0x49, busnum=1)

# Choose a gain of 1 for reading voltages from 0 to 4.09V.
# Or pick a different gain to change the range of voltages that are read:
#  - 2/3 = +/-6.144V
#  -   1 = +/-4.096V
#  -   2 = +/-2.048V
#  -   4 = +/-1.024V
#  -   8 = +/-0.512V
#  -  16 = +/-0.256V
# See table 3 in the ADS1015/ADS1115 datasheet for more info on gain.
GAIN = 1

# Main loop.
while True:
    client.loop()
    # Read all the ADC channel values in a list.
    values = [0]*4
    if (time.time() > timestamp + 10):
        for i in range(4):
            # Read the specified ADC channel using the previously set gain value.
            values[i] = adc.read_adc(i, gain=GAIN)
            client.virtualWrite(i, values[i])
        timestamp = time.time()

MaxM · May 19, 2020, 2:09pm

It was already optimised for ads1015. Does not want to work.

Connecting to mqtt.mydevices.com:1883
Traceback (most recent call last):
File “ADS1015.py”, line 65, in
values[i] = adc.read_adc(i, gain=GAIN)
File “/usr/local/lib/python2.7/dist-packages/Adafruit_ADS1x15/ADS1x15.py”, line 192, in read_adc
return self._read(channel + 0x04, gain, data_rate, ADS1x15_CONFIG_MODE_SINGLE)
File “/usr/local/lib/python2.7/dist-packages/Adafruit_ADS1x15/ADS1x15.py”, line 133, in _read
result = self._device.readList(ADS1x15_POINTER_CONVERSION, 2)
File “/usr/local/lib/python2.7/dist-packages/Adafruit_GPIO/I2C.py”, line 134, in readList
results = self._bus.read_i2c_block_data(self._address, register, length)
File “/usr/local/lib/python2.7/dist-packages/Adafruit_PureIO/smbus.py”, line 216, in read_i2c_block_data
cmdstring[i] = val
TypeError: one character string expected

MaxM · May 19, 2020, 2:14pm

ADS1015 is the file with your code. and yes, ADS1x15 is in the same folder

shramik_salgaonkar · May 19, 2020, 2:16pm

can you install with python3 the ads library and run the file with python3. Also make sure the ads is detected by i2cdetect -y 1

MaxM · May 19, 2020, 2:25pm

This one?

shramik_salgaonkar · May 19, 2020, 2:31pm

this one.

MaxM · May 19, 2020, 2:38pm

Works

MaxM · May 19, 2020, 2:40pm

I mean the program

shramik_salgaonkar · May 19, 2020, 2:44pm

and which program is it? can you share?

shramik_salgaonkar · May 19, 2020, 3:18pm

nevermind, it will just increase my work. follow this steps:

git clone GitHub - adafruit/Adafruit_Python_ADS1x15: Python code to use the ADS1015 and ADS1115 analog to digital converters with a Raspberry Pi or BeagleBone black.
cd Adafruit_Python_ADS1x15
sudo python3 setup.py install
i2cdetect -y 1 //check whether ads is detected
run this code with ads1015 selected and see whether you are getting data from the ads.
create a new file and add the below code:

code:

#!/usr/bin/env python
import Adafruit_ADS1x15
import cayenne.client
import time

# Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
MQTT_USERNAME = "MQTT_USERNAME"
MQTT_PASSWORD = "MQTT_PASSWORD"
MQTT_CLIENT_ID = "MQTT_CLIENT_ID"

# The callback for when a message is received from Cayenne.


def on_message(message):
    print("message received: " + str(message))
    # If there is an error processing the message return an error string, otherwise return nothing.


client = cayenne.client.CayenneMQTTClient()
client.on_message = on_message
client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID)
# For a secure connection use port 8883 when calling client.begin:
# client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, port=8883, loglevel=logging.INFO)

i = 0
timestamp = 0

# Simple demo of reading each analog input from the ADS1x15 and printing it to
# the screen.
# Author: Tony DiCola
# License: Public Domain

# Import the ADS1x15 module.


# Create an ADS1115 ADC (16-bit) instance.
# adc = Adafruit_ADS1x15.ADS1115()

# Or create an ADS1015 ADC (12-bit) instance.
adc = Adafruit_ADS1x15.ADS1015()

# Note you can change the I2C address from its default (0x48), and/or the I2C
# bus by passing in these optional parameters:
# adc = Adafruit_ADS1x15.ADS1015(address=0x49, busnum=1)

# Choose a gain of 1 for reading voltages from 0 to 4.09V.
# Or pick a different gain to change the range of voltages that are read:
#  - 2/3 = +/-6.144V
#  -   1 = +/-4.096V
#  -   2 = +/-2.048V
#  -   4 = +/-1.024V
#  -   8 = +/-0.512V
#  -  16 = +/-0.256V
# See table 3 in the ADS1015/ADS1115 datasheet for more info on gain.
GAIN = 1

# Main loop.
while True:
    client.loop()
    # Read all the ADC channel values in a list.
    values = [0]*4
    if (time.time() > timestamp + 10):
        for i in range(4):
            # Read the specified ADC channel using the previously set gain value.
            values[i] = adc.read_adc(i, gain=GAIN)
            client.virtualWrite(i, values[i])
        timestamp = time.time()

MaxM · May 20, 2020, 5:27am

First of all, this is my code:

from ADS1x15 import ADS1015
import time

adc = ADS1015()
channel = 0
gain = 1
t = 0

while True:
data = adc.read_adc(channel, gain)
print t, “s:”, data
t += 0.5
time.sleep(0.5)

It works and gives me good results.

MaxM · May 20, 2020, 5:34am

I did as you said

I cloned the files and installed them using python3. I did i2ctetect and the ads was at 48 as it always does.

Then I tried your code and it responded with the error:

Connecting to mqtt.mydevices.com:1883
Traceback (most recent call last):
File “ADS1015.py”, line 65, in
values[i] = adc.read_adc(i, gain=GAIN)
File “/usr/local/lib/python2.7/dist-packages/Adafruit_ADS1x15/ADS1x15.py”, line 192, in read_adc
return self._read(channel + 0x04, gain, data_rate, ADS1x15_CONFIG_MODE_SINGLE)
File “/usr/local/lib/python2.7/dist-packages/Adafruit_ADS1x15/ADS1x15.py”, line 133, in _read
result = self._device.readList(ADS1x15_POINTER_CONVERSION, 2)
File “/usr/local/lib/python2.7/dist-packages/Adafruit_GPIO/I2C.py”, line 134, in readList
results = self._bus.read_i2c_block_data(self._address, register, length)
File “/usr/local/lib/python2.7/dist-packages/Adafruit_PureIO/smbus.py”, line 216, in read_i2c_block_data
cmdstring[i] = val
TypeError: one character string expected

Then I tried sudo python3 <your_code> with the result:

^CTraceback (most recent call last):
File “ADS1015.py”, line 59, in
client.loop()
File “/usr/local/lib/python3.7/dist-packages/cayenne_mqtt-1.1.0-py3.7.egg/cayenne/client.py”, line 122, in loop
File “/usr/local/lib/python3.7/dist-packages/paho_mqtt-1.5.0-py3.7.egg/paho/mqtt/client.py”, line 1163, in loop
socklist = select.select(rlist, wlist, , timeout)

shramik_salgaonkar · May 20, 2020, 9:12am

so can you add this code into the cayenne code and send data. you can check the code i gave above.

MaxM · May 20, 2020, 9:24am

do you receive something?

shramik_salgaonkar · May 20, 2020, 9:40am

receive what?

MaxM · May 20, 2020, 9:49am

I’m running the program n

MaxM · May 20, 2020, 10:53am

I’m getting those readings on the console:

PUB v1/xxxxxxxxxxxxxxxx/things/xxxxxxxxxxxxxx/data/1
-15

PUB v1/xxxxxxxxxxxxxxx/things/xxxxxxxxxxxxxx/data/1
-15

PUB v1/xxxxxxxxxxxxxxxxxxxx/things/xxxxxxxxxxxxxxxxxxxxxx/data/1
-15

PUB v1/xxxxxxxxxxxxxxxxxx/things/xxxxxxxxxxxxxxxxx/data/1
-15

Is this how this should look like?

shramik_salgaonkar · May 20, 2020, 10:54am

yes, if -15 is your ads value. can you share your code also.

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Can not add any devices or widgets

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