Search found 20 matches
- Thu Feb 22, 2024 11:26 am
- Forum: ESP-IDF
- Topic: ESPNOW Slower than expected RTT (Round Trip Time)
- Replies: 7
- Views: 17807
Re: ESPNOW Slower than expected RTT (Round Trip Time)
Is this still working for anyone? I'm seeing minimum round trip times of about 6ms with 250 byte payload with no observable impact from calling esp_wifi_internal_set_fix_rate after disabling ampdu. I found issue https://github.com/espressif/esp-idf/issues/3238 which has one similar report of fix_rat...
- Sat Mar 26, 2022 1:34 am
- Forum: ESP-IDF
- Topic: UART flush doesn't clear RX buffer
- Replies: 3
- Views: 8021
Re: UART flush doesn't clear RX buffer
Many thanks - this problem has been driving me up the wall for weeks, so it's great to know the solution is on it's way.
- Wed Dec 08, 2021 11:44 pm
- Forum: ESP-IDF
- Topic: ESP32-C3 timer peripheral problems? (no, user error)
- Replies: 1
- Views: 3020
Re: ESP32-C3 timer peripheral problems? (no, user error)
To close this out, the root cause was unsafe access to spi_device_polling_transmit() from multiple tasks, eventually causing that function to hang and block the task driven from the timer interrupts. I miss-interpreted the lack of activity from that task as it not getting triggered when in fact it h...
- Tue Dec 07, 2021 10:46 pm
- Forum: ESP-IDF
- Topic: ESP32-C3 timer peripheral problems? (no, user error)
- Replies: 1
- Views: 3020
ESP32-C3 timer peripheral problems? (no, user error)
Update: so this is definitely a user code problem (i.e. me), not a hardware or esp-idf problem. I added some debug pin wiggling to the timer library and I can see that it's still generating interrupts when my app goes down. I chased back up to my isr callback function and it's still getting to there...
- Thu Oct 21, 2021 1:57 pm
- Forum: ESP-IDF
- Topic: ESP32-C3-DEVKITM-1 continously resetting
- Replies: 6
- Views: 7801
Re: ESP32-C3-DEVKITM-1 continously resetting
I’m just wondering how you are connecting to the ESP32-C3 Dev Kit and debugging with Visual Studio Code and PlatformIO. And what OS. I filled this PlatformIO issue because I couldn’t get that setup to work without wiring up a separate USB connector. https://github.com/platformio/platform-espressif3...
- Wed Oct 20, 2021 5:41 pm
- Forum: ESP-IDF
- Topic: ESP32-C3-DEVKITM-1 continously resetting
- Replies: 6
- Views: 7801
Re: ESP32-C3-DEVKITM-1 continously resetting
Thanks @silbstep, this was driving me nuts!
- Tue Sep 29, 2020 3:28 pm
- Forum: Hardware
- Topic: TTGO T-Display Serial Pins
- Replies: 1
- Views: 7696
Re: TTGO T-Display Serial Pins
They are remappable so you can choose which pins you want to use when you initialise the serial port. There are some defaults defined: #ifndef RX1 #define RX1 9 #endif #ifndef TX1 #define TX1 10 #endif #ifndef RX2 #define RX2 16 #endif #ifndef TX2 #define TX2 17 #endif See void HardwareSerial::begin...
- Thu Sep 24, 2020 12:15 pm
- Forum: Hardware
- Topic: Gaps in ADC voltage response when using DMA
- Replies: 15
- Views: 17533
Re: Gaps in ADC voltage response when using DMA
Hi Scott, Thanks for your thoughts. Espressif have acknowledged the problem and are working on a fix. see https://www.esp32.com/viewtopic.php?p=65313#p65313 I'd love to know more about the mechanism of the failure too - it's quite intriguing. Input signal is clean on the scope, and I've tried severa...
- Fri Sep 18, 2020 1:37 am
- Forum: Hardware
- Topic: Gaps in ADC voltage response when using DMA
- Replies: 15
- Views: 17533
Re: Gaps in ADC voltage response when using DMA
That's great news! Thanks for the update.
- Tue Sep 15, 2020 2:51 pm
- Forum: Hardware
- Topic: Gaps in ADC voltage response when using DMA
- Replies: 15
- Views: 17533
Re: Gaps in ADC voltage response when using DMA
Hey @plusorc many thanks for trying it out! It's good to know it's not just me/the esp32s I have here.
It seems unlikely this is a real problem in the hardware, after all, the ADC works if we call it without using DMA/I2S, so now the thing is to figure out what I've done wrong
It seems unlikely this is a real problem in the hardware, after all, the ADC works if we call it without using DMA/I2S, so now the thing is to figure out what I've done wrong