Search found 8917 matches
- Sat Apr 02, 2022 1:39 am
- Forum: General Discussion
- Topic: Connecting multiple ESP32 | ESP-NOW | WiFi | RPi
- Replies: 4
- Views: 2961
Re: Connecting multiple ESP32 | ESP-NOW | WiFi | RPi
The thing with ESP32s only having one radio is true, indeed, and for some things like BT/BLE, coexistence means the radio needs to switch between BT and WiFi channels. However, WiFi and ESP-Now both use the same protocol, and if you use the same channel for both, there's no switching necessary.
- Sat Apr 02, 2022 1:27 am
- Forum: ESP-IDF
- Topic: StoreProhibited error when equating two pointers
- Replies: 3
- Views: 1550
Re: StoreProhibited error when equating two pointers
My point is that you're allocating about 48K of RAM, which is a non-trivial amount. Malloc will fail if you do not have that amount of free RAM and will return a NULL pointer. That guru meditation has all the hallmarks of you trying to dereference a null pointer (specifically EXCVADDR: 0x00000000). ...
- Sat Apr 02, 2022 1:21 am
- Forum: General Discussion
- Topic: Initial flash needed for download boot over internal USB?
- Replies: 5
- Views: 4315
Re: Initial flash needed for download boot over internal USB?
Yes, given that you put the chip into download mode by starting with GPIO0 low.
- Fri Apr 01, 2022 2:58 pm
- Forum: General Discussion
- Topic: Initial flash needed for download boot over internal USB?
- Replies: 5
- Views: 4315
Re: Initial flash needed for download boot over internal USB?
Yes, you can; the ROM contains a driver that can flash the device over USB. You do need a way to be able to put it into download mode by grounding GPIO0, though.
- Fri Apr 01, 2022 2:56 pm
- Forum: General Discussion
- Topic: Connecting multiple ESP32 | ESP-NOW | WiFi | RPi
- Replies: 4
- Views: 2961
- Fri Apr 01, 2022 6:07 am
- Forum: ESP-IDF
- Topic: StoreProhibited error when equating two pointers
- Replies: 3
- Views: 1550
Re: StoreProhibited error when equating two pointers
You're very optimistically assuming your malloc() succeeds.
- Fri Apr 01, 2022 1:35 am
- Forum: Hardware
- Topic: ADC ISR pinned in a specific core
- Replies: 3
- Views: 2065
Re: ADC ISR pinned in a specific core
The ADC actually does have multi-channel, DMA etc functionality, but the ESP32 uses the I2S peripheral to do that (essentially the ADC is seen as an I2S input that way). Later chips make the ADC a standalone peripheral. Suggest you look there, perhaps you'll find what you're looking for.
- Fri Apr 01, 2022 1:30 am
- Forum: ESP-IDF
- Topic: Does ESP32-S3 supports any functions like Bit-band operation?
- Replies: 1
- Views: 1012
- Fri Apr 01, 2022 1:26 am
- Forum: General Discussion
- Topic: Getting partition table error
- Replies: 1
- Views: 1168
Re: Getting partition table error
You have a partition table that has 6MiB worth of partitions, but your chip only seems to have 4MiB of flash.
- Fri Apr 01, 2022 1:03 am
- Forum: Hardware
- Topic: ESP32-S2: fractional SPI byte in master mode: input not captured
- Replies: 5
- Views: 2349
Re: ESP32-S2: fractional SPI bits in master mode: input not captured
By the way, we would appreciate it if you could share a project with the minimum code to reproduce this issue, that way we know for sure we can reproduce this. If you can't do that, that's okay too, though, it doesn't look like this should be too hard to reproduce.