Working with an ESP32-s2, using platformIO with Visual Code Studio. I was running into some logic issues with my code (not necessary what, just background) and was attempting to use the serial monitor to debug. I added the necessary functionality to my program, made some adjustments to the baud rate and the PlatformIO config file to default to the correct COM port. After uploading the sketch I got this in the Serial Monitor.
ESP-ROM:esp32s2-rc4-20191025
Build:Oct 25 2019
rst:0x1 (POWERON),boot:0x8 (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3ffe6100,len:0x1684
load:0x4004c000,len:0x1018
load:0x40050000,len:0x2f04
entry 0x4004c354
␛[0;32mI (21) boot: ESP-IDF v4.4.1-405-g6c5fb29c2c 2nd stage bootloader␛[0m
␛[0;32mI (21) boot: compile time 04:22:07␛[0m
␛[0;32mI (22) boot: chip revision: 0␛[0m
␛[0;32mI (25) qio_mode: Enabling default flash chip QIO␛[0m
␛[0;32mI (31) boot.esp32s2: SPI Speed : 80MHz␛[0m
␛[0;32mI (35) boot.esp32s2: SPI Mode : QIO␛[0m
␛[0;32mI (40) boot.esp32s2: SPI Flash Size : 4MB␛[0m
␛[0;32mI (45) boot: Enabling RNG early entropy source...␛[0m
␛[0;32mI (50) boot: Partition Table:␛[0m
␛[0;32mI (54) boot: ## Label Usage Type ST Offset Length␛[0m
␛[0;32mI (61) boot: 0 nvs WiFi data 01 02 00009000 00005000␛[0m
␛[0;32mI (69) boot: 1 otadata OTA data 01 00 0000e000 00002000␛[0m
␛[0;32mI (76) boot: 2 ota_0 OTA app 00 10 00010000 00160000␛[0m
␛[0;32mI (83) boot: 3 ota_1 OTA app 00 11 00170000 00160000␛[0m
␛[0;32mI (91) boot: 4 uf2 factory app 00 00 002d0000 00040000␛[0m
␛[0;32mI (98) boot: 5 ffat Unknown data 01 81 00310000 000f0000␛[0m
␛[0;32mI (106) boot: End of partition table␛[0m
␛[0;32mI (610) esp_image: segment 0: paddr=00010020 vaddr=3f000020 size=0b458h ( 46168) map␛[0m
␛[0;32mI (618) esp_image: segment 1: paddr=0001b480 vaddr=3ffbedb0 size=02fech ( 12268) load␛[0m
␛[0;32mI (621) esp_image: segment 2: paddr=0001e474 vaddr=40024000 size=01ba4h ( 7076) load␛[0m
␛[0;32mI (626) esp_image: segment 3: paddr=00020020 vaddr=40080020 size=234ech (144620) map␛[0m
␛[0;32mI (657) esp_image: segment 4: paddr=00043514 vaddr=40025ba4 size=0920ch ( 37388) load␛[0m
␛[0;32mI (666) esp_image: segment 5: paddr=0004c728 vaddr=50000000 size=00010h ( 16) load␛[0m
␛[0;32mI (672) boot: Loaded app from partition at offset 0x10000␛[0m
␛[0;32mI (672) boot: Disabling RNG early entropy source...␛[0m
E (696) esp_core_dump_flash: No core dump partition found!
E (696) esp_core_dump_flash: No core dump partition found!
I received this error twice, once with my actual code and the second with the following code below. I adjusted the baud rate, restarted VSC and tried again thinking something in configuration was hanging me up. Still nothing. The only thing that's different is for the test code, I'm getting an error message inside VSC that says it can't find "Serial" library. So I had to include it, which is strange since I didn't have to with my actual code I'm guessing it was included through another library, but eh?
#include <HardwareSerial.h>
void setup() {
Serial.begin(115200);
}
void loop() {
Serial.println("hello");
delay(1000);
}
Regardless, when running my actual code everything uploads fine with no issues and I have feedback from my LCD screen. Touch is working, the logic for the touch is working. It's just this error message and I'm not getting some of the lines I was expecting inside of the serial monitor in order to debug some logic issues.
The point is that the ESP tells you did not provide a section in the partition so that it can handle core dump for future analysis.
When something goes wrong, the ESP will record the state of the software (aka the core dump) as it were. Then you can take you esp and read the dump on your PC whenever you want to analyse what was wrong.
To remove the notice, you have to add the section in your partition file. Here is mine for example (suitable for 16MB flash version):
pepsr_16MB_84KBnvs.csv
See the last line that reserves 64KB (0x100000) of space for the ESP to dump the data into.
@see ESP core dump doc for more information