Hi,

thank you for the answer.


DECOUPLING CAPACITOR
------------------------------
Are you aware that the antenna and the LNA input pin are not galvanic isolated?


thank you,
Enrico Migliore

Hi,

I'm designing a board with the ESP32.

I noticed that in the latest hardware guideline, I mean the version V 2.4, the matching network changed.

At chapter "2.1.5 RF" the document says:
"A PI-type matching network is essential for antenna matching in the circuit design.
C-L-C structure is ...

Dear WiFive,

thank you for your reply.

I'll wait for the IDF to support the ESP-PSRAM64.

Thanks,
Enrico Migliore

Hi,

I purchased and received 3k ESP32-D2WD and 3k ESP-PSRAM64 chips.

I'm designing a board with the ESP32-D2WD and with the ESP-PSRAM64.

At page 9 of the 2.5 version of the datasheet I'm reading this:

"ESP32-D2WD’s pins GPIO16, GPIO17, SD_CMD, SD_CLK, SD_DATA_0 and SD_DATA_1 are used for ...

Hi,

I forgot to say in my very previous post that:

1. The I2S is assisted by the DMA. That means that there's no CPU intervention.

2. The I2S will generate a CPU interrupt only at the end of the data burst capture

Ciao,
Enrico Migliore

Dear Kolban,

we too started out from:

1. The CAM-DEMO examples

2. The source file i2s_stream.c which is gittable at https://gist.github.com/cnlohr/2b9f8a26e891aa1a118f634cff9d04fe

We've got something working right now.
We are not ready yet for sharing the code though because the code is still ...

Hi,

I need to read a 4-bit parallel port device. The external device provides also the clock to the ESP32.

The bit rate is 1 Mbit/s and each data burst is made of 8192 bits

In idle, the clock signal is low. When transmitting, the clock signal goes high and low at 1 Mbit/s.

Is there any reliable ...

Dear Archibald,

>> I do not understand why you are thinking of using I²S.

I don't want the CPU busy in reading an decoding a bit at a time.

I want the hardware (I2S + DMA) to sample the pin and put the value into RAM.
Afterwards I will need the CPU intervention only for decoding the bit stream ...

Hi,

I'll also would like to see:


9. Wettable flanks QFN package like Texas Instruments and NXP for easy automatice AOI inspection:

https://e2e.ti.com/blogs_/b/behind_the_wheel/archive/2016/02/03/the-value-of-wettable-flank-plated-qfn-packaging-for-automotive-applications

https://e2e.ti.com ...

Hi,

I would like to give my little contribution to the "What I would like to see in the next IoT chip" discussion.

This is my backgorund:
I've been designing boards with GSM/GPRS/3G modules and software drivers for 22 years.
I started to work in 1998 on the old Siemens M20 and I'm now working on ...