Search found 6 matches

by rma-31
Sat May 04, 2019 5:19 am
Forum: Showcase
Topic: ESP32 real-time audio synthesis platform
Replies: 1
Views: 1623

ESP32 real-time audio synthesis platform

Hi, we've created an open source real-time audio synthesis hardware platform using the ESP32. It allows stereo audio IO at 44.1kHz-24bit and DSP processing using the ESP32 FPU of the audio stream. Buffer size is small enough to allow for latencies <1ms, e.g. reacting to a key press event. We have cr...
by rma-31
Mon Nov 05, 2018 7:56 am
Forum: Showcase
Topic: ESP32 DSP Library
Replies: 1
Views: 2825

Re: ESP32 DSP Library

Hi, very nice! Have you looked into supporting integer algorithms? Possibly using the MAC16 from the ESP32?

Thanks!
by rma-31
Sat Oct 06, 2018 10:33 am
Forum: ESP32 IDF
Topic: GCC stdfix fixed point math support
Replies: 0
Views: 576

GCC stdfix fixed point math support

Hi, I was wondering if fixed point support for the esp32 using gcc will be added. Currently, if one tries to use this gcc feature, the compiler responds with "error: fixed-point types not supported for this target". This would be very useful, when implementing DSP code. Example snippet: #include "st...
by rma-31
Thu Oct 04, 2018 8:54 am
Forum: Hardware
Topic: Issue with Flashing WROVER Module CP2102N
Replies: 1
Views: 791

Issue with Flashing WROVER Module CP2102N

Hi, I have designed a PCB with a WROVER module and the SiliconLabs CP2102N with the option to use external power or USB power. I also use the SDCARD interface, where IO2 is in use. I adapted the USB circuitry from the WROVER dev board. When on external power I have frequently issues with flashing / ...
by rma-31
Tue Oct 10, 2017 8:12 pm
Forum: ESP32 IDF
Topic: SD card fwrite large file issue
Replies: 1
Views: 1049

Re: SD card fwrite large file issue

The test above has been carried out with SPI mode.
Looking on the clk line it seems that the transaction eventually brakes down after a while, actually earlier than the reported 1023 blocks.

Am really puzzled, no clue what is happening, any help much appreciated;)
by rma-31
Sun Oct 08, 2017 5:10 pm
Forum: ESP32 IDF
Topic: SD card fwrite large file issue
Replies: 1
Views: 1049

SD card fwrite large file issue

When using fwrite on SD card write fails once file approaches 1Mbyte size, anyone has an idea? edit: I used SPI mode, today I checked the clock line, it seems that some blocks are transferred but eventually the transaction brakes down, possibly a DMA issue? char * buf= malloc(1024); bzero(buf, 1024)...

Go to advanced search