Search found 26 matches

by philippe_44
Sat Aug 27, 2022 7:15 pm
Forum: Report Bugs
Topic: I2S 24bit Slave
Replies: 3
Views: 13085

Re: I2S 24bit Slave

Have a look ------------------ It’s similar when the data is 32-bit width, but take care when using 8-bit and 24-bit data width. For 8-bit width, the written buffer should still using uint16_t (i.e. align with 2 bytes), and only the high 8 bits will be valid, the low 8 bits are dropped, and for 24-b...
by philippe_44
Mon Jan 10, 2022 9:12 pm
Forum: ESP-IDF
Topic: Bluedroid and coverart
Replies: 1
Views: 2601

Bluedroid and coverart

I'm trying to add coverart support form my BT app but I can't figure out how to use the esp_avrc_feature_flag_t and especially the options ESP_AVRC_FEAT_FLAG_COVER_ART_GET_IMAGE_PROP = 0x0080, /*!< Cover Art GetImageProperties */ ESP_AVRC_FEAT_FLAG_COVER_ART_GET_IMAGE = 0x0100, /*!< Cover Art GetIma...
by philippe_44
Sat Oct 30, 2021 6:32 am
Forum: Hardware
Topic: Ethernet and I2S: I2S does not work as soon as 50MHz clock is fed to GPIO0
Replies: 1
Views: 2743

Re: Ethernet and I2S: I2S does not work as soon as 50MHz clock is fed to GPIO0

Solved ... it was a ground loop / power supply issue. Really interesting that the *external* DAC totally did "freak out" and produced white noise as soon as the 50 MHz pin was connected to GPIO0
by philippe_44
Sat Oct 30, 2021 2:23 am
Forum: Hardware
Topic: Ethernet and I2S: I2S does not work as soon as 50MHz clock is fed to GPIO0
Replies: 1
Views: 2743

Ethernet and I2S: I2S does not work as soon as 50MHz clock is fed to GPIO0

Hi - I'm trying to add ethernet to my audio project and need a precise audio clock, so I use APLL. Most of DAC that can be used do not need an MCLK and in case they need it, I set GPIO0 as an output of CLK_OUT1 which is I2S0_CLK. All that works fine. Problem happens with the ethernet. I know that, a...
by philippe_44
Mon Sep 21, 2020 1:07 am
Forum: General Discussion
Topic: change in code location in external flash causes major performances gap
Replies: 1
Views: 2422

change in code location in external flash causes major performances gap

Hi - I have a fairly CPU intensive application that works well, but I've noticed that I can have large changes in CPU consumed by the same thread just by changing the mapping of the flash (simply by having a part of code present or not). There is no difference in thread scheduling due to that code b...
by philippe_44
Wed Aug 12, 2020 2:57 am
Forum: IDEs for ESP-IDF
Topic: VSCode & debugging
Replies: 1
Views: 3791

VSCode & debugging

Hi - I've finally got VSCode and esp32 installed properly. I can build, download, monitor ... Now I'm facing an issue with debugging. My debug platform works, I'm able to use is running command line outside of VSCode Inside VSCode, openocd is launched succesfully and received a connection when I sta...
by philippe_44
Sun Aug 09, 2020 6:42 am
Forum: General Discussion
Topic: Debugging Stack/heap problems with VisualGDB
Replies: 1
Views: 4016

Re: Debugging Stack/heap problems with VisualGDB

Very late reply, but I can't see in you zip that you have increased stack size. You know that opus takes a fair bit of stack. Try as much as 32k or compile libopus with NONTHREADSAFE_PSEUDOSTACK
by philippe_44
Fri Jul 31, 2020 6:19 am
Forum: ESP-IDF
Topic: Reading IO configuration
Replies: 1
Views: 2594

Reading IO configuration

Hi - It might sound a bit a silly question, but is there a way to read/probe IO configuration? The reason is that some part of my large application need to probe HW environment by configuring some IO to I2C and trying to read something. But these IO might already have been configured for another use...
by philippe_44
Sat May 09, 2020 5:37 am
Forum: ESP-IDF
Topic: RMT and infrared on IDF 3.3
Replies: 1
Views: 3016

Re: RMT and infrared on IDF 3.3

Replying to my own question ... my bad (to some extend). I was reading the duration0/duration1 value before scaling to µs. So the different is not 7300 vs 9000, but more the fact that the margin should be set to 150µs rather than 20µs. I've tried with different remotes and got the same result ...