Search found 15 matches
- Thu Jan 11, 2024 10:42 am
- Forum: ESP32 Arduino
- Topic: RMT Peripheral to send a variable number of pulses continuously
- Replies: 1
- Views: 35633
Re: RMT Peripheral to send a variable number of pulses continuously
I managed to fix the delay between two consecutive waves of pulses being sent by disabling the interrupt for the channel I use and simply launching my function sendPulses at regular interval. The delay between the pulses being sent becomes then exactly equal to the interval without the additional de...
- Wed Jan 10, 2024 6:10 pm
- Forum: ESP-IDF
- Topic: Using RMT to generate 'n' rising clock edges [faster than gpio twiddling]
- Replies: 7
- Views: 27987
Re: Using RMT to generate 'n' rising clock edges [faster than gpio twiddling]
Hey guys, Reviving this topic to see if you could share your full solution with me ... I actually have a piece of working code myself for the same purpose but my problem is that successive calls to send a wave of pulses yields at least a 15 us delay between the two waves and I cannot afford that in ...
- Wed Jan 10, 2024 5:39 pm
- Forum: ESP-IDF
- Topic: Why is there a 15us interval between rmt pulses between two rmt_transmit?
- Replies: 3
- Views: 53650
Re: Why is there a 15us interval between rmt pulses between two rmt_transmit?
Did you manage to solve your issue ? I have the same problem but for a different reason. I have an interactive application where I need to compute a sequence of pulses based on some sensor data I get. I use the rmt to send the pulses in a loop fashion : check sensor -> compute sequence -> send via R...
- Wed Jan 10, 2024 1:16 pm
- Forum: ESP32 Arduino
- Topic: RMT Peripheral to send a variable number of pulses continuously
- Replies: 1
- Views: 35633
RMT Peripheral to send a variable number of pulses continuously
Hi guys, I am tinkering around with the rmt peripheral and understand it is an amazing tool to generate complex and changing waveform overtime. I need to generate a certain amount of pulses over a GPIO that I would like to vary in terms of number of pulses, frequency and duty cycle. Here is my curre...
- Tue Jan 11, 2022 8:37 am
- Forum: Hardware
- Topic: ESP32 DevKit based on Wrover-E cannot use SDIO
- Replies: 2
- Views: 3979
Re: ESP32 DevKit based on Wrover-E cannot use SDIO
Thanks for the quick reply !
I’m using a normal breakout board with no level shifter ...
I’m using a normal breakout board with no level shifter ...
- Mon Jan 10, 2022 6:52 pm
- Forum: Hardware
- Topic: ESP32 DevKit based on Wrover-E cannot use SDIO
- Replies: 2
- Views: 3979
ESP32 DevKit based on Wrover-E cannot use SDIO
Hey guys, So i'm in a bit of a bummer here, I have troubles working out how to connect an SD card in native sdio 4-lines to my devkit. I followed the Arduino example which suggests the following pin connections : /* * Connect the SD card to the following pins: * * SD Card | ESP32 * D2 12 * D3 13 * C...
- Fri Oct 15, 2021 11:02 am
- Forum: ESP-IDF
- Topic: UDP Client example : where to get ESP32 UDP port
- Replies: 4
- Views: 12697
Re: UDP Client example : where to get ESP32 UDP port
Thanks for your reply guys. I actually meant the port from which the ESP32 can send messages through UDP. The port you guys are mentioning is the port of the UDP server (on my computer for instance). I'm actually looking for the port I can combine with the IP address of the ESP32 to send messages fr...
- Wed Sep 22, 2021 1:56 pm
- Forum: ESP-IDF
- Topic: OTA update : 2 partitions one with OTA program and second with application program
- Replies: 3
- Views: 5811
Re: OTA update : 2 partitions one with OTA program and second with application program
Thanks for the reply boarchuz ! I kept looking at this in the meanwhile and understood what you mentioned exactly. I got the example working and i can switch between the factory and OTA app through reboot. The following code snippet (found here : https://www.esp32.com/viewtopic.php?t=4210) allows to...
- Wed Sep 22, 2021 9:14 am
- Forum: ESP-IDF
- Topic: OTA update : 2 partitions one with OTA program and second with application program
- Replies: 3
- Views: 5811
OTA update : 2 partitions one with OTA program and second with application program
Hello, I wanted to inquire if it was possible to setup a 2 OTA partitions scheme where one contains the simple ota example for instance and its role would be to update then boot on the second partition (my actual application). Is it possible to OTA update just this second partition and for instance ...
- Sat Sep 11, 2021 9:28 am
- Forum: ESP-IDF
- Topic: UDP Client example : where to get ESP32 UDP port
- Replies: 4
- Views: 12697
UDP Client example : where to get ESP32 UDP port
Hey guys, I am playing around with the udp_client example. I can easily receive and send packets to the ESP32. However, I would like to know if there is a systematic way to know the UDP port of the ESP32. I currently can figure it out by looking at the source UDP port of the message the UDP sends an...