Search found 1067 matches

by kolban
Fri Nov 24, 2017 10:25 pm
Forum: ESP32 SDK
Topic: "No rule to make target" while compiling
Replies: 4
Views: 1886

Re: "No rule to make target" while compiling

When I rename files, occasionally, I have to delete the generated build folder and let it be recreated.
by kolban
Fri Nov 24, 2017 5:20 am
Forum: ESP32 SDK
Topic: Patterns for heap corruption resolution ...
Replies: 0
Views: 18

Patterns for heap corruption resolution ...

Imagine I am suffering from memory corruption issues. Using the latest ESP-IDF, I switch on "Comprehensive" heap memory debugging. I then inject a call to: heap_caps_check_integrity_all() This detects a problem ... and reports: CORRUPT HEAP: Invalid data at 0x3ffd0a90. Expected 0xfefefe go...
by kolban
Thu Nov 23, 2017 4:43 am
Forum: ESP32 SDK
Topic: Clarification on ULP co-processor REG_WR instruction
Replies: 1
Views: 22

Clarification on ULP co-processor REG_WR instruction

Am now studying the REG_WR instruction as found here: http://esp-idf.readthedocs.io/en/latest/api-guides/ulp_instruction_set.html#reg-wr-write-to-peripheral-register The docs seem to say that I can write 8 bits from a ULP regsiter into a peripheral register control structure. However, everything I s...
by kolban
Thu Nov 23, 2017 3:41 am
Forum: ESP32 SDK
Topic: Clarification on ULP co-processor REG_RD instruction
Replies: 1
Views: 22

Clarification on ULP co-processor REG_RD instruction

Am studying the REG_RD instruction in the documentation found here: http://esp-idf.readthedocs.io/en/latest/api-guides/ulp_instruction_set.html#reg-rd-read-from-peripheral-register In there, there is an example: REG_RD 0x120, 2, 0 // load 4 bits: R0 = {12'b0, REG[0x120][7:4]} My puzzle is, that I am...
by kolban
Thu Nov 23, 2017 2:46 am
Forum: ESP32 SDK
Topic: _FS_LOCK makes f_open return error in IDF 3.0
Replies: 9
Views: 91

Re: _FS_LOCK makes f_open return error in IDF 3.0

Howdy, I'm assuming by "f_open" you mean "fopen()" as in http://man7.org/linux/man-pages/man3/fopen.3.html fopen() returns a file pointer, so I am assuming that fopen() is returning NULL and that errno is set to 16 as per your description. The errno 16 (decimal) is defined here: ...
by kolban
Wed Nov 22, 2017 4:53 pm
Forum: ESP32 SDK
Topic: Stack overflow when trying to use tasks
Replies: 5
Views: 95

Re: Stack overflow when trying to use tasks

Howdy, Lets look at this statement you have coded: xTaskCreate(tskSDCard, "task_SD_card", 1024, NULL, tskIDLE_PRIORITY, NULL); If we take each parameter apart one by one, we find the third parameter (1024) is your stack size for the task. 1024 is pretty low. Remember you have about 100+ K ...
by kolban
Wed Nov 22, 2017 4:50 pm
Forum: ESP32 SDK
Topic: function to convert esp_ble_adv_data_t to raw data array ?
Replies: 6
Views: 76

Re: function to convert esp_ble_adv_data_t to raw data array ?

Howdy my friend, maybe some background on the puzzle you are looking to solve would help? To my understanding, the esp_ble_adv_data_t is a data structure we populate in an ESP32 BLE Server when we want to advertise data to the BLE environment. If what you want to do is receive the raw data from othe...
by kolban
Wed Nov 22, 2017 3:00 am
Forum: General Discussion
Topic: Is it ok to post jobs here on the forum?
Replies: 5
Views: 121

Re: Is it ok to post jobs here on the forum?

I for one would always be interested to hear about paid opportunities for ESP32 skills. I think this forum would be a good place. However, I'd suggest that needs and requirements and terms of the opportunity be clearly stated. I see too many posts on other forums that say "I have a need for an ...
by kolban
Tue Nov 21, 2017 3:17 pm
Forum: ESP32 SDK
Topic: function to convert esp_ble_adv_data_t to raw data array ?
Replies: 6
Views: 76

Re: function to convert esp_ble_adv_data_t to raw data array ?

Howdy my friend. To clarify what you are asking for ... when working with BLE advertising, a BLE server builds advertising packet payloads as documented in the BLE spec. We can then advertise/publish these packets and because the format is well defined, a BLE client can receive an advertised packet ...
by kolban
Tue Nov 21, 2017 3:38 am
Forum: ESP32 Arduino
Topic: Undefined Reference to "uxTaskGetSystemState" Upon Any Attempt to Use.
Replies: 6
Views: 68

Re: Undefined Reference to "uxTaskGetSystemState" Upon Any Attempt to Use.

Ahh just noticed that you are using Arduino. It may be that the ESP-IDF distributed with the Arduino version you are using pre-dates the latest ESP-IDF into which this option was recently added. You'd want to check the ESP-IDF commit history and find out what this option was added and then compare t...

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