Description
Board
ESP32S3 Dev Module
Device Description
DevKitC-1, N32R8V, just a single board.
Hardware Configuration
Only connected to the computer without anything else. All GPIOs are free.
Version
v2.0.9
IDE Name
Arduino IDE 2.1.1
Operating System
macOS Ventura 13.4.1（M1 chip）
Flash frequency
80 MHz
PSRAM enabled
no
Upload speed
921600
Description
Try a simple example "StartCounter"(libraries/Preferences/examples/StartCounter/StartCounter.ino) on my board. Code as follows:
/*
ESP32 startup counter example with Preferences library.
This simple example demonstrates using the Preferences library to store how many times
the ESP32 module has booted. The Preferences library is a wrapper around the Non-volatile
storage on ESP32 processor.
created for arduino-esp32 09 Feb 2017
by Martin Sloup (Arcao)
*/
#include <Preferences.h>
Preferences preferences;
void setup() {
Serial.begin(115200);
Serial.println();
// Open Preferences with my-app namespace. Each application module, library, etc
// has to use a namespace name to prevent key name collisions. We will open storage in
// RW-mode (second parameter has to be false).
// Note: Namespace name is limited to 15 chars.
preferences.begin("my-app", false);
// Remove all preferences under the opened namespace
//preferences.clear();
// Or remove the counter key only
//preferences.remove("counter");
// Get the counter value, if the key does not exist, return a default value of 0
// Note: Key name is limited to 15 chars.
unsigned int counter = preferences.getUInt("counter", 0);
// Increase counter by 1
counter++;
// Print the counter to Serial Monitor
Serial.printf("Current counter value: %u\n", counter);
// Store the counter to the Preferences
preferences.putUInt("counter", counter);
Serial.print("Free:");
Serial.println(preferences.freeEntries());
// Close the Preferences
preferences.end();
// Wait 3 seconds
Serial.println("Restarting in 3 seconds...");
delay(3000);
// Restart ESP
ESP.restart();
}
void loop() {}I changed 10 seconds to 3 seconds it doesn't matter I think. After I uploaded, the counter value is always "1". However, it was supposed to add "1" everytime, instead of keeping "1".
This is just a simple example. Thus, more complex things like this, too. "putString" doesn't save the string you provided, etc.
Sketch
...
unsigned int counter = preferences.getUInt("counter", 0);
counter++;
Serial.printf("Current counter value: %u\n", counter);
preferences.putUInt("counter", counter);
...Debug Message
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0xc (RTC_SW_CPU_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x42022fd2
SPIWP:0xee
Octal Flash Mode Enabled
For OPI Flash, Use Default Flash Boot Mode
mode:SLOW_RD, clock div:1
load:0x3fce3808,len:0x3ac
load:0x403c9700,len:0x9b4
load:0x403cc700,len:0x28d8
entry 0x403c98bc
Current counter value: 1
Free:628
Restarting in 3 seconds...
�ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0xc (RTC_SW_CPU_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x42022fd2
SPIWP:0xee
Octal Flash Mode Enabled
For OPI Flash, Use Default Flash Boot Mode
mode:SLOW_RD, clock div:1
load:0x3fce3808,len:0x3ac
load:0x403c9700,len:0x9b4
load:0x403cc700,len:0x28d8
entry 0x403c98bc
Current counter value: 1
Free:628
Restarting in 3 seconds...
//output loops like this
Other Steps to Reproduce
-
Just verify the code and upload, then open the monitor, "Current counter value" is always "1", nothing special.
-
If you check with "int pStatus = preferences.putUInt("counter", counter);", and the "pStatus" is "4", which is the right return value.
-
My friend who uses Windows 10 and uses the same ESP32S3 board also meet the problem.
-
I tested the code on "wokwi.com"(an online simulator) but it works normally...(God, That's weird?)
I have checked existing issues, online documentation and the Troubleshooting Guide
- I confirm I have checked existing issues, online documentation and Troubleshooting guide.