Im curious about this too. Id like to use an SD card and an MCP2515 CAN controller on the same SPI bus...hopefully its possible...? why are you using an SPI can interface when there is a can interface built into the ESP32?? Look up TWAI in the esp-idf documentation. You need a transceiver like the ...

Im curious about this too. Id like to use an SD card and an MCP2515 CAN controller on the same SPI bus...hopefully its possible...?

Hello ESP_Sprit, I followed your recommendations and everything went well in the initialization of SDSPI_SDMMC, however, both the LORA and the W5500 showed totally strange behavior, and I found a little problem that I believe is related to your driver, in the case of LORA and SDCARD, I used the spi...

ESP_Sprite wrote: ↑

Sat Sep 04, 2021 1:56 am

No, there are not. You can pick any pin for this (that is not input-only or used for other things like flash).

Can you use an input-only pin for TWAI-Rx?

Yes, ADC2 is shared with the wifi/bluetooth radio and therefore cannot be used simultaneously.

If you want to measure analog voltages and use wifi/bluetooth simultaneously, you'll have to switch to pins that are mapped to ADC-1

Will there be an ESP32-S3 mini module?

Theres an arduino bootloader that is incompatible with IDF code. For example, if you have an arduino program with that that "bad" arduino bootloader in the ESP32, and then OTA to an IDF-build, it will soft-brick the ESP32. Are you using the latest arduino bootloader when you flash the ESP32? I forge...

I would be surprised if the ESP32-S3 removed the DAC....but I guess if thats the case, you could still do pseudo-DAC with PWM/LEDc and an RC filter...?

delayMicroseconds() works in arduino. For ESP-IDF, you can use this: unsigned long IRAM_ATTR micros() { return (unsigned long)(esp_timer_get_time()); } void IRAM_ATTR delayMicros(uint32_t us) { uint32_t m = micros(); if (us) { uint32_t e = (m + us); if (m > e) { //overflow while (micros() > e) { NOP...

So this is basically just a C3, but with WiFi 6 added?

Why would they even release the C3, if the C6 seems to supersede it?

(unless the C6 is going to be much more expensive than the C3).