Problem with UART : UART event queue full about micropython_esp32_psram_lobo HOT 14 CLOSED

Hi Lobo and Liberasys
I have same problem too with UART its becouse I dont writre a new issue. Im reading some data with UART but ture data returns only 21 times (21x12=252byte) after 66th cycle returns true data again until 88th cycle
var = uart.read(12)
How is that possible and Is this the source of the error because of the code I wrote?
P.S. : This code running in a thread

King Regards

from micropython_esp32_psram_lobo.

Thanks for reporting this.
machine.UART is now updated, bug fixed and should function as intended.

One new argument is added to the machine.UART.init(): buffer_size
The default buffer size is 256 bytes and can be now set in the range 256 - 4096
For example:
uart = machine.UART(2, tx=22, rx=21, buffer_size=1024)

The full documentation for the UART module will be added soon.

from micropython_esp32_psram_lobo.

Thank you for your update @loboris but still same error how can I clean the buffer every cycle
true data = b'2.012/022\x00\r\n'
after fill the buffer 98th cycle
wrong data = b'2/022\x00\r\n3.26'

I want to clean buffer every cycle in my loop

Thank you so much for your help
King regards

from micropython_esp32_psram_lobo.

@elektrobil
I'm not shure if I understand the problem.
Maybe you could give more detailes, what method you are using to read, what the other side sends, ...

If you need to clean the input buffer, you should read until nothing is returned.

I'm planning to update the UART module with more methods like input buffer clear, read with timeout, read until a specified pathern, etc.

from micropython_esp32_psram_lobo.

Hi @loboris thank you for your helps
My project is nrf24le1 reads the sensor and send to the main nrf24le1. Main Nrf chip connected to Esp32 via Uart.

import machine

uart = machine.UART(2, tx=pin1, rx=pin2, buffer_size=1024)
uart.init(9600, bits=8, parity=None, stop=1, timeout=10000)
var = uart.read(12)

This code runs in a thread function continious
Everything ok untill buffer size full
true data = b'2.012/022\x00\r\n'
after fill the buffer 98th cycle (buffer size 1024)(when buffersize =256 cycle return error at 21st cycle)
wrong data = b'2/022\x00\r\n3.26' last 3.26 must be in front of the variable.
I think I need to clean input buffer. Is that possible with micropython code because Im new in micropython
Thank you so much again

from micropython_esp32_psram_lobo.

Could you please post your complete thread function. I think there should be a simple solution for that.

from micropython_esp32_psram_lobo.

Hi @loboris this is my thread function below Thank you for your help
gc.collect()
i=0
inx=0
htext = 35
vtext = 10
if uart.any():
gelen = uart.read(12)received data = b'2.012/022\x00\r\n
l+=1
print(gelen)
print("SAYI = ",l)#count loop cycle
gelens = gelen.decode()
print(len(gelens))
print(gelens)
gelens = gelens.rstrip('\n')
gelens = gelens.rstrip('\r')
gelens = gelens.rstrip('\x00')
if len(gelens) == 9:
gelens,sets = gelens.split('/')
sb = list(sets)
print(sb)
if int(sb[1])>1:
inx = int(sb[2]) + (4 * (int(sb[1])-1))
else:
inx = int(sb[2])
vals[inx-1] = float(gelens)
King Regards...

from micropython_esp32_psram_lobo.

I suppose this code is included in an infinite loop in your thread function ?
If not, it will run only once.

uart.read(12) reads 12 bytes from uart buffer and removes them from the buffers, so if it is executed regularly no buffer overflow should occur.

You can use if uart.any() >= 12: to test if at leas 12 bytes have arrived.

The UART module is updated today, some new functions are added as well as callbacks on some uart events. Full documentation will be on Wiki tomorrow.

Note:
When you insert the code here, paste the code, select all code and press <>.
The code should apear betveen two sets of ```
That way the code structure will be preserved.

from micropython_esp32_psram_lobo.

I think buffer can't clean and I have the same error. How could I be sure to clean the buffer ?
This sample : using uart = machine.UART(2, tx=pin1, rx=pin2, buffer_size=256)
(it seems to me) Buffer Not Full Output:
b'3.269/023\x00\r\n'
SAYI = 21
12 (chars)
3.269/023 -- (mydata/id)
['0', '2', '3']
-------------------------------------- after 21st cycle it means 21x12 = 252bytes
(it seems to me)Buffer Full Output:
b'2/022\x00\r\n3.26'
SAYI = 22
12
2/022
3.26

Thank you for help on saturday night

from micropython_esp32_psram_lobo.

Hi @loboris I pulled the new version but data comes like that.

0;0.0;0.0;0.
b'0;0.0;0.0;0.'
SAYI =  3

from micropython_esp32_psram_lobo.

Thank you @loboris
UART works good
King Regards

from micropython_esp32_psram_lobo.

Please check the new UART Wiki page.
There are some new methods, and you can now use callback in your code.
For your application which reads the messages ending with '\r\n' you can use the new method uart.readln().

from micropython_esp32_psram_lobo.

I sow Wiki page when you commit. Thank you so much. It works perfect

from micropython_esp32_psram_lobo.

Hello, UART update seems great Boris ! UART callback with pattern is very cool !
I tested with putty as serial terminal client under Linux. uart.readln() works great with lineend='\r'.
Thank you Boris !

from micropython_esp32_psram_lobo.