No, the chips don't align any data. The compiler does. The flash and DRAM are byte-addressable/-accessible in hardware, hence gcc (usually) does 1-byte alignment on 8-bit values. You can check the value of sizeof(uint8_t) or sizeof(uint32_t) yourself. However, struct { uint8_t u8; uint32_t u32; } x...

Could someone please enlighten me.

Does the ESP32-S3 and other ESP32 chips align data on 32bit words.

In other words.

Does a unint32_t and a uint8_t take the same amount of memory space?

Thank you.

I could be wrong but I don't think that information is actually available to a scan.
I see no reason why they would add it either.

Oh My go esp-idf5.1.1 is worse
This is on several S3 units. What's going on guys?

I was just experimenting with the ADC one shot read and found that reading a pin basically pulled high will max out at 3.114 volts. The actual measured voltage at the pin is 3.3v. Is this normal or is there something wrong. if((adc->error = adc_oneshot_read(adc_handle, adc->adc_channel , &(adc->raw_...

ESP_Sprite wrote: ↑

Sun Jun 18, 2023 9:17 am

Yeah, I wouldn't put 3.3V on them indeed.

Sort of makes sense really.
Thanks I'll let him know.

ESP_Sprite wrote: ↑

Fri Jun 16, 2023 1:51 am

Yes, I can confirm this.

I had a friend ask if they where 3.3v tolerant and I replied

AFAIK they are not 3.3 v tollerant as they are connected to the internal SPI voltage and as such feeding in 3.3v would probably fry the psram

Is that case?
Is my presumption correct?

ESP_Sprite wrote: ↑

Fri Jun 16, 2023 1:51 am

Yes, I can confirm this.

Thanks that's all I needed.

HI In the datasheet it states As the VDD_SPI voltage of the ESP32-S3R8V chip has been set to 1.8 V, the working voltage for GPIO47 and GPIO48 would also be 1.8 V, which is different from other GPIOs. As I read this it suggests that I can still use them as GPIO however their voltage will be 1.8v. Can...

I am curious as I add my components with Kconfig.probuild files the order that they appear in is sort of random. Is there some sort of logic to the order in which they appear in the menuconfig menu. Thanks. Gregory Ok in answer to my own question I finally found the answer. They are sorted according...