Search found 102 matches

by gunar.kroeger
Fri Jan 10, 2020 2:03 pm
Forum: General Discussion
Topic: How to tranfer big files with bad connection
Replies: 0
Views: 199

How to tranfer big files with bad connection

What is the recommended way of uploading and downloading files of a few MB with bad internet connection? if we try to upload a big file and the connection stops for a few minutes at 99%, the whole upload must start again. Is there a protocol that handles this case without having creating multiple sm...
by gunar.kroeger
Tue Dec 10, 2019 1:10 pm
Forum: General Discussion
Topic: How to use AT sockets?
Replies: 6
Views: 701

How to use AT sockets?

Hi, We are currently using pppos_client to connect to the internet using the BG96 GSM module. But ppp does not meet our requirements. We need to be able to constantly being connected to the internet AND sending AT commands to get information like signal strength. I know it is possible to do this usi...
by gunar.kroeger
Fri Nov 08, 2019 8:10 pm
Forum: ESP32 IDF
Topic: PPP does not detect modem disconnection
Replies: 2
Views: 291

Re: PPP does not detect modem disconnection

We see this issue on esp-idf-v3.3 aswell.
there are a few issues opened on github regarding pppos disconnection and reconnection problems but no official answer yet /:

https://github.com/espressif/esp-idf/is ... 3Aopen+ppp
by gunar.kroeger
Thu Nov 07, 2019 5:39 pm
Forum: General Discussion
Topic: [Solved] How can I open the same file twice? not the same behaviour as on windows..
Replies: 2
Views: 499

[Solved] How can I open the same file twice? not the same behaviour as on windows..

How can I open the same file once to write a log continuously, and second to read it and upload it through wifi. I wish to have 2 cursors moving on the file, and not have to fseek back and forth to impelement this feature. I tested this code with esp-idf-v3.3 and on windows with CodeBlocks int main(...
by gunar.kroeger
Tue Nov 05, 2019 8:19 pm
Forum: General Discussion
Topic: crash on uart_read_bytes after some time
Replies: 0
Views: 223

crash on uart_read_bytes after some time

I have seen this crash a few times on esp_idf_v3.3 what could cause the crash when calling the uart_read_bytes function?? We only read one byte at a time to get NMEA messages // Read data from the UART int len = uart_read_bytes(gps_uart_port, (uint8_t*) data, 1, pdMS_TO_TICKS(2000)); Guru Meditation...
by gunar.kroeger
Tue Nov 05, 2019 5:49 pm
Forum: ESP32 IDF
Topic: Error on secondary bluetooth connection
Replies: 3
Views: 1139

Re: Error on secondary bluetooth connection

Anyone?
by gunar.kroeger
Thu Oct 31, 2019 4:18 pm
Forum: General Discussion
Topic: Maximum number of open files
Replies: 3
Views: 787

Re: Maximum number of open files

FATFS on sdcard through spi
by gunar.kroeger
Thu Oct 31, 2019 2:03 pm
Forum: General Discussion
Topic: Maximum number of open files
Replies: 3
Views: 787

Maximum number of open files

What is the maximum number of open files that we can have at the same time with esp-idf, and what are the configurations to get to this value?

currently we can't open more than 5. Is there a way to increase this number?
by gunar.kroeger
Mon Oct 28, 2019 4:19 pm
Forum: ESP32 IDF
Topic: CoAP server uri scheme error dtls= 0 tls = 0 scheme = 1
Replies: 0
Views: 193

CoAP server uri scheme error dtls= 0 tls = 0 scheme = 1

How can I run the coap_client_example with coaps://californium.eclipse.org:5684? It works fine using coap, but coaps returns E (6097) CoAP_client: CoAP server uri scheme error dtls= 0 tls = 0 scheme = 1 (I edited just this log line to ESP_LOGE(TAG, "CoAP server uri scheme error dtls= %d tls = %d sch...

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