Search found 21 matches

by pctj101
Sat Apr 20, 2024 10:14 am
Forum: General Discussion
Topic: Espressif Reveals ESP32-P4, So close to perfection
Replies: 6
Views: 5875

Re: Espressif Reveals ESP32-P4, So close to perfection

A nice thing about ESP32 is with Ethernet and Wifi, one chip and one program could do everything. Adding C2 or C6 for Wifi is okay but the extra programming and juggling the programming header is a challenge, especially if each person needs to create their own protocol to go between P4 and C2 chips....
by pctj101
Mon Oct 24, 2022 2:44 pm
Forum: ESP-IDF
Topic: I2C Slave address masking
Replies: 3
Views: 3501

Re: I2C Slave address masking

Might be difficult due to the way the hardware has an address filter that only watches for a single address.
by pctj101
Tue Jun 01, 2021 2:37 pm
Forum: ESP-IDF
Topic: i2c slave read/write direction - how to determine?
Replies: 0
Views: 1276

i2c slave read/write direction - how to determine?

When using i2c_slave_read_buffer() It it possible to determine if the master wants to "read" or "write" to me as the esp32 i2c slave target? I figure the i2c address + write bit would allow me to figure out the intent, but it appears that write=true/false bit is not available via the esp-idf API. Di...
by pctj101
Wed Oct 28, 2020 6:27 am
Forum: General Discussion
Topic: emac_reset / EMAC_SW_RST not working
Replies: 0
Views: 1432

emac_reset / EMAC_SW_RST not working

esp-idf v3.3 My custom ESP32 board uses a LAN8720. Over the past year I had many of them fail, so I'm trying to determine the root cause (I already have 50Mhz clock start delay and TVS ESD protection). In esp_err_t emac_reset(void) It calls REG_SET_BIT(EMAC_DMABUSMODE_REG, EMAC_SW_RST) However one o...
by pctj101
Sun Aug 16, 2020 3:38 pm
Forum: General Discussion
Topic: Mixed Secure Boot v1 & v2
Replies: 2
Views: 3113

Re: Mixed Secure Boot v1 & v2

Solid reply. Thanks a bunch!
by pctj101
Fri Aug 14, 2020 4:27 pm
Forum: General Discussion
Topic: esp-cryptoauthlib binary source
Replies: 0
Views: 1616

esp-cryptoauthlib binary source

Hi, I was looking at this: https://github.com/espressif/esp-cryptoauthlib/tree/master/esp_cryptoauth_utility#using-atecc608a-with-esp32-wroom-32 I have a custom board with the ATECC608 but my I2C pins are on a different GPIO esp_cryptoauth_utility/sample_bins/secure_cert_mfg_esp32.bin Is it possible...
by pctj101
Sat Aug 08, 2020 6:03 pm
Forum: General Discussion
Topic: Mixed Secure Boot v1 & v2
Replies: 2
Views: 3113

Mixed Secure Boot v1 & v2

I have a number of deployed devices with Secure Boot V1 & OTA Updates. I want to make some new devices and read that ESP32-ECO3 uses Secure Boot V2 (RSA). 1) Does ESP32-ECO3 NOT support the old v1 AES signing? 2) Can I send the same OTA update binary to both devices? Seems it might be hard since the...
by pctj101
Tue Jul 28, 2020 6:48 am
Forum: General Discussion
Topic: Maximum Flashing Baud Rate
Replies: 2
Views: 6328

Re: Maximum Flashing Baud Rate

Hi thanks for the confirmation.
Yes if I have hit the flash speed limit then so be it!

Have a great day!
by pctj101
Mon Jul 27, 2020 3:42 pm
Forum: General Discussion
Topic: Maximum Flashing Baud Rate
Replies: 2
Views: 6328

Maximum Flashing Baud Rate

I am having trouble getting flashing to work above an effective 825kbps. So with a CH340 I was able to set flashing baud to 921600 and it flashes effectively at 850kbps. Wrote 1388912 bytes (858612 compressed) at 0x00020000 in 13.8 seconds (effective 806.8 kbit/s)... And with a CP2102N I was able to...
by pctj101
Thu Sep 26, 2019 2:19 pm
Forum: ESP-IDF
Topic: Raw ethernet packet
Replies: 1
Views: 3175

Re: Raw ethernet packet

Wanted to bump this back up in case anyone could share anything they know about raw ethernet packet sending causing problems in a multi-task freertos environment.