Search found 13 matches

by vm__dm
Fri Dec 16, 2022 1:19 pm
Forum: Hardware
Topic: ESP32-C3 Mini Devkit: Configure for Built in USB JTAG?
Replies: 22
Views: 36082

Re: ESP32-C3 Mini Devkit: Configure for Built in USB JTAG?

Sorry to reopen an old thread, but I stumbled into an issue after doing the modifications suggested by this post. This work perfectly well for the USB connection, but I had to remove also two extra resistors (R21-R22) to disconnect the CP210 from U0TXD and U0RXD. Before doing that I was able to send...
by vm__dm
Fri Dec 16, 2022 1:17 pm
Forum: ESP-IDF
Topic: Using UART0 and U0TXD U0RXD as regular UART on ESP32-C3
Replies: 4
Views: 5472

Re: Using UART0 and U0TXD U0RXD as regular UART on ESP32-C3

Ok, I found the issue. We re-wired the ESP32C3 board to bypass the on-board USB2UART (we wanted to test in a situation close to the final HW setup). We moved R1-R2 to R3-R4, as suggested here: https://esp32.com/viewtopic.php?t=21007 But we didn't remove R21 and R22 so the UART pins were still connec...
by vm__dm
Fri Dec 16, 2022 10:42 am
Forum: ESP-IDF
Topic: Using UART0 and U0TXD U0RXD as regular UART on ESP32-C3
Replies: 4
Views: 5472

Re: Using UART0 and U0TXD U0RXD as regular UART on ESP32-C3

This thing is really driving me crazy. I use the uart_echo example and I still can't receive any character on U0RXD/GPIO20. I see output from ROM and the "hello" string, but sending character to that pin doesn't seem to lead to any result. I also tried to use esp_rom to route that signal via GPIO ma...
by vm__dm
Fri Dec 16, 2022 8:10 am
Forum: ESP-IDF
Topic: Using UART0 and U0TXD U0RXD as regular UART on ESP32-C3
Replies: 4
Views: 5472

Re: Using UART0 and U0TXD U0RXD as regular UART on ESP32-C3

I did some more testing. I took the serial echo sample and leave log output only on USB Jtag/CDC. I could run it using UART 1 controller on pins MTMS/GPIO4 for TX and MTDI/GPIO5 for RX. I changed UART controller to UART 0 and it still works on the same pinout (so it doesn't seem to be an issue using...
by vm__dm
Thu Dec 15, 2022 4:03 pm
Forum: ESP-IDF
Topic: Using UART0 and U0TXD U0RXD as regular UART on ESP32-C3
Replies: 4
Views: 5472

Using UART0 and U0TXD U0RXD as regular UART on ESP32-C3

I need to use U0TXD and U0RXD as regular UART on ESP32-C3. For testing, I am implementing a USB-to-UART bridge, from the physical UART to the USB-CDC one. My test application is quite simple: #include <stdio.h> #include <driver/gpio.h> #include <driver/uart.h> #include <freertos/FreeRTOS.h> #define ...
by vm__dm
Thu Dec 15, 2022 9:47 am
Forum: General Discussion
Topic: ESP RF Test tool and ESP32-C3 over USB
Replies: 5
Views: 4733

Re: ESP RF Test tool and ESP32-C3 over USB

Thank you for the clarification, I contacted tech support.
by vm__dm
Thu Dec 15, 2022 8:04 am
Forum: General Discussion
Topic: ESP32-C3FH4AZ
Replies: 1
Views: 1712

ESP32-C3FH4AZ

I see this part number mentioned in the latest ESP32-C3 datasheet, but I couldn't find any description of the differences between this variant and those already available. I see from DS that SPI-flash pins are labeled as NC. From PN I suppose that flash size is 4MB, but I would like to know if there...
by vm__dm
Wed Dec 14, 2022 4:20 pm
Forum: General Discussion
Topic: ESP RF Test tool and ESP32-C3 over USB
Replies: 5
Views: 4733

Re: ESP RF Test tool and ESP32-C3 over USB

As an alternative, is there a low-level documented APIs that allow me to perform the same operations done by that tool?
Continous TX etc.
by vm__dm
Wed Dec 14, 2022 1:34 pm
Forum: General Discussion
Topic: ESP RF Test tool and ESP32-C3 over USB
Replies: 5
Views: 4733

ESP RF Test tool and ESP32-C3 over USB

Is it possible to run the tool using the integrate USB2CDC converter of the chip, without having to connect an external port? I am testing with ESP32-C3-DevKitM-1 (rewired to route USB signals to the ESP, without using the on-board converter) and I can download the firmware, but get an access denied...
by vm__dm
Tue Dec 13, 2022 7:53 am
Forum: ESP-IDF
Topic: Use SPICLK as GPIO15 on ESP32-C3
Replies: 5
Views: 2563

Re: Use SPICLK as GPIO15 on ESP32-C3

Thanks a lot for the clarification.
Is this true for all the SPI interface signals, including WP, even if no external flash is connected?