Search found 14 matches

by KevinA
Sun Feb 20, 2022 8:58 pm
Forum: ESP32 Arduino
Topic: ESP32-S3-DevKitC Installed package_esp32_dev_index but no S3 devices
Replies: 1
Views: 1673

ESP32-S3-DevKitC Installed package_esp32_dev_index but no S3 devices

In the Adruino-ESP32 docs it says to use https://raw.githubusercontent.com/espre ... index.json to develop for ESP32-S3 but there is no S3 based boards with the ESP32-S3 in the board selector. I have a nice ESP32-S3-DevKitC-1-N32R8V Development Board waiting...
by KevinA
Sat Feb 19, 2022 10:44 pm
Forum: Hardware
Topic: Lolin D32 Pro v2 and SPIRAM access
Replies: 3
Views: 4172

Re: Lolin D32 Pro v2 and SPIRAM access

I could not get the above to work in Arduino, had to rewrite it after I remembered how. void setup() { Serial.begin(115200); } void loop() { //Serial.printf("ESP32 Chip model = %s Rev %d\n", ESP.getChipModel(), ESP.getChipRevision()); Serial.printf("Total heap: %d\n", ESP.getHeapSize()); Serial.prin...
by KevinA
Tue Oct 18, 2016 5:59 am
Forum: Report Bugs
Topic: Bios Default BAUD [esp8266]
Replies: 4
Views: 14702

Re: Bios Default BAUD

My bad, I should have posted in the esp8266 forum, the latest NodeMCU from LoLin has sdk 5.2 on it and this is what it does: print(uart.setup(0, 74880, 8, 0, 1, 1 )) ERROR Communication with MCU..Got answer! Communication with MCU established. AutoDetect firmware... Can't autodetect firmware, becaus...
by KevinA
Mon Oct 03, 2016 2:53 am
Forum: Hardware
Topic: Documentation Clarification
Replies: 3
Views: 9384

Re: Documentation Clarification

I couldn't find a GPIO list with the pins or GPIO number I could sort so I made one:
Image
by KevinA
Mon Oct 03, 2016 2:44 am
Forum: Hardware
Topic: Documentation Clarification
Replies: 3
Views: 9384

Re: Documentation Clarification

More issues: ESP Technical Reference Table 16: GPIO Matrix Peripheral Signals What is "Direct I/O in IO_MUX" mean? I found my answer after a few more hours of reading, the thing that is throwing me is your use of GPIO labels instead of mapping to PIN numbers. I was believing that a PIN could have a ...
by KevinA
Sun Oct 02, 2016 9:26 pm
Forum: Report Bugs
Topic: Bios Default BAUD [esp8266]
Replies: 4
Views: 14702

Bios Default BAUD [esp8266]

While working on the latest SDK I was trying to figure out the garbage on my screen every time I rebooted to discover 74880 baud would allow me to see what was being dumped to the screen. Is there a reason for 74880 instead of a standard baud rates? Some terminal programs do not have 74880 support a...
by KevinA
Sun Oct 02, 2016 9:09 pm
Forum: Hardware
Topic: Documentation Clarification
Replies: 3
Views: 9384

Documentation Clarification

In Espressif documentation I've noticed that some times they use 0 (Zero) based numbering and other times it is based on 1 (One): SD_* is for the signals of the SDIO slave HS1_* is for the signals of the Port 1 of SDIO host HS2_* is for the signals of the Port 2 of SDIO host MT* is for the signals o...
by KevinA
Sun Oct 02, 2016 8:31 pm
Forum: Hardware
Topic: xSPI and UARTx muxing?
Replies: 4
Views: 10845

Re: xSPI and UARTx muxing?

The Technical Reference Manual section 4 goes over the options for pin muxing in details, but the short answer is "yes you can map most peripherals anywhere". Is there any documentation with example of: UART1 - TX, RX, RTS, CTS pins being assigned to GPIO MUX, DMA setup, Interrupts setup and enable...
by KevinA
Sun Oct 02, 2016 12:25 am
Forum: Documentation
Topic: [Latest Update] ESP32 Hardware Reference Design
Replies: 54
Views: 164599

Re: [Latest Update] ESP32 Hardware Reference Design

SPIRAM: MR25H40MDF 4M as 512KX8 $21.82 qty 1 Earlier I had read we could add external SRAM as IRAM... I don't think so, maybe after it's moved into IRAM but this SPIRAM stuff is painful to work with. It has 1 byte writes, after you set it up and 40 clock cycles later your done. I could see it as a b...
by KevinA
Sat Oct 01, 2016 8:06 pm
Forum: Documentation
Topic: [Latest Update] ESP32 Hardware Reference Design
Replies: 54
Views: 164599

Re: [Latest Update] ESP32 Hardware Reference Design

I can't find where to post documentation errors: ESP32 Datasheet 3.1.3 External Flash and SRAM "ESP32 supports 4 X 16 MBytes of external QSPI Flash" this indicates 4 times 16MBytes "ESP32 supports up to 128 Mbits of external DUAL or QUAD SPI Flash memory" The SRAM issue: On the IO_MUX page where is...