Search found 12 matches

by error404
Fri Sep 01, 2023 7:09 am
Forum: ESP-IDF
Topic: Some invalid I2C register reads
Replies: 4
Views: 2820

Re: Some invalid I2C register reads

May want to play with those; enable internal pullups or change to e.g. 5k. I did try 1k and 4k7, but that did not make any difference. The error persisted. But I'll use 4k7 from now on, thank you for the info! 0xA3 happens to be (0x51<<1)+1, which may be a hint that the first bit (MSB) gets missed....
by error404
Thu Aug 31, 2023 6:05 am
Forum: ESP-IDF
Topic: Some invalid I2C register reads
Replies: 4
Views: 2820

Some invalid I2C register reads

ESP32 Wrover-E IDF 4.4 ADF 2.4 Hi, I'm currently facing some problems when reading registers from an IC via I2C. I'm getting like hundres of correct reads, but at some point I get an incorrect one. I've watched the I2C lines with an oscilloscope and the data looks fine, so the problem happens intern...
by error404
Thu Jun 22, 2023 7:54 am
Forum: General Discussion
Topic: How much SRAM is actually usable?
Replies: 2
Views: 1850

Re: How much SRAM is actually usable?

That's sad news unfortunately.

But thank you for your answer!
by error404
Tue Jun 20, 2023 6:35 am
Forum: General Discussion
Topic: How much SRAM is actually usable?
Replies: 2
Views: 1850

How much SRAM is actually usable?

I'm developing a relatively large application on an ESP32-­WROVER­-E. Currently I'm running into an issue, where i need more RAM. My goal is to store a JPEG (640x480), but i have only 35kB left, which isn't enough in some cases. I don't wanna go into discussions about using dynamically allocated mem...
by error404
Thu Feb 16, 2023 12:21 pm
Forum: ESP-ADF
Topic: A2DP sink volume cap
Replies: 2
Views: 4215

Re: A2DP sink volume cap

I've looked into that problem again and still didn't find an answer. In `btc_a2dp_sink_handle_inc_media` in the file `btc_a2dp_sink.c` the incoming data gets converted via `OI_CODEC_SBC_DecodeFrame`. If i check the data directly after the conversation i can see the same problem as in the output. A v...
by error404
Mon Dec 19, 2022 11:09 am
Forum: ESP-ADF
Topic: A2DP sink volume cap
Replies: 2
Views: 4215

A2DP sink volume cap

ESP32 Wrover-E IDF 4.4 ADF 2.4 Hi, i've set up an A2DP sink ( https://github.com/espressif/esp-adf/blob/master/examples/player/pipeline_a2dp_sink_stream/main/play_bt_music_example.c ) and modified it. I can play music via bluetooth and the remote control also works well. However i have difficulties ...
by error404
Thu Nov 10, 2022 8:05 am
Forum: ESP-IDF
Topic: How do I use flash encryption and non-OTA updates?
Replies: 5
Views: 3628

Re: Flash Encryption and non-OTA updates

I want to achieve a goal similar to what @M-Schiller wants.

Does someone have answers to his questions? :?:
by error404
Thu Aug 25, 2022 1:30 pm
Forum: ESP-ADF
Topic: A2DP sink controls stop working
Replies: 0
Views: 2672

A2DP sink controls stop working

Hi, I'm currently trying to get this example to work on my custom-board: https://github.com/espressif/esp-adf/blob/master/examples/player/pipeline_a2dp_sink_stream/main/play_bt_music_example.c I changed it up a litte. The code is below. My problem is, that the controls (prev, play, pause, next) stop...
by error404
Mon May 16, 2022 6:15 am
Forum: ESP-IDF
Topic: ESP32 IDF SPI slave not receiving any data
Replies: 6
Views: 4515

Re: ESP32 IDF SPI slave not receiving any data

Let me share my results with you: At first the most important info: You need a CS for an ESP32 as a SPI slave, if you don't want to overcomplicate your software. 1st issue I had: What the ESP32 IDF really needs is the end of the transaction as a rising edge on CS. Else it doesn't know when the trans...
by error404
Fri May 13, 2022 6:00 am
Forum: ESP-IDF
Topic: ESP32 IDF SPI slave not receiving any data
Replies: 6
Views: 4515

Re: ESP32 IDF SPI slave not receiving any data

I tried pulling a GPIO to low (CS is active low) and selected it as CS, but it isn't working. I'll try using a CS line from the master to the slave, but it will take a while since we have to modify our custom board. => Sharing my results later! But I think in general this implementation is just inco...