TommyPROM VS WiFiManager

I have tried the script from u/nib85 from his github here (https://github.com/TomNisbet/TommyPROM/blob/master/unlock-ben-eater-hardware/unlock-ben-eater-hardware.ino) His code is for the 256k rather than the 64k version and I changed the sequence of writes as required by the datasheet for the 64k version as follows:

Oh ok. I did upload the sketch from the arduino ide, but I was following the documentation at https://tomnisbet.github.io/TommyPROM/.

Which chip are you using? If it is the 28C256 and you built the Ben Eater programmer, try this sketch: https://github.com/TomNisbet/TommyPROM/tree/master/unlock-ben-eater-hardware

Also, although not necessarily the root cause based on the symptoms you are describing, the AT28C256 comes with a software data protection feature which, if it was somehow enabled prior to shipping, needs to be disabled. Ben's EEPROM code does not unlock these chips. If your testing reveals that the EEPROM was in fact not written to, then one option would be to implement u/nib85's TommyPROM arduino programmer, which supports unlocking. It uses a few different chips, but you can make it work with Ben's hardware. There is a section somewhere in the hardware notes that speaks to that.

Here is one of th3m that works with your setup: https://github.com/TomNisbet/TommyPROM I will search for the other one and send. Also, read the README of the github repository

When I encountered the problem I tried to find the solution and found references to TommyRom. After trying I had the same behaviour then before. From the Datasheet I couldn't find mutch about extra steps to writing the Chip. I haven't build the first thing where Ben programmed the Chip manually, but I will recreate it next.

Really not sure about that programmer... according to what I could read here it mostly supports micro-controllers and serial EEPROM chips. If you only run on Windows, then the XGecu T48 would be a safer bet, IMO. One of XGecu's official distributors has a store on AliExpress under the name of 'XGecu Official Store'. Most reliable source if you are willing to wait a bit. If you run Mac OS or Linux, then the older TL-866II-Plus model is best for compatibility as the minipro open source software works with it on these platforms. Still available out there, but good chance it will be a clone. A third option is a breadboard/arduino version like the TommyPROM from u/nib85.

I just added support for these chips to my programmer. Take a look at this project if you want to see some working code: https://github.com/TomNisbet/TommyPROM

#include "WiFiManager.h" //https://github.com/tzapu/WiFiManager WiFi Configuration Magic #include "ezTime.h" // Time Library - get your POSIX Timezone 'string' to replace TZ/GMT if needed, below, here: https://support.cyberdata.net/index.php?/Knowledgebase/Article/View/438/10/posix-timezone-strings #include "SevenSegmentExtended.h" #include "SevenSegmentTM1637.h" #include "SevenSegmentFun.h" // For Text readouts #include "SoftwareSerial.h" #include "DFMiniMp3.h" //========================USEFUL VARIABLES============================= const char* ssid = "R2D2"; // R2D2 Access point network name (to connect to R2D2, to change/add your WiFi details) const char* password = "Droidyouarelookingfor"; // R2D2 Access point password uint16_t notification_volume = 25; // Speaker volume int Display_backlight = 45; // 4 Digit Display brightness when operating normally (outside of initialisation) int BlueLED_brightness = 50; // Two blue LED's (when connected to ESP32 pin 14, instead of VCC) const char* ntpServer = "pool.ntp.org"; // Your chosen TimeServer const String timezone_posix_string = "EST5EDT,M3.2.0/2:00:00,M11.1.0/2:00:00"; // Insert your own POSIX Timezone string here. See link above for info. //===================================================================== // Avoid changing below here... // Call WiFi Manager WiFiManager wifiManager; // Call a Timezone Timezone TZ; #define CLK 25 #define DT 26 #define SW 27 #define RED_LED 17 #define WHITE_LED 16 const int BLUE_LED = 14; // 14 corresponds to GPIO14 float counter = 0; int currentStateCLK; int lastStateCLK; String currentDir = ""; unsigned long lastButtonPress = 0; int btnState = 0; // timer int timer_secs = 0; int timer_mins = 0; float inc_red_led = 0; // the number of the Blue LED's pin const int BlueChannel = 1; // setting PWM properties const int freq = 5000; const int resolution = 8; class Mp3Notify { public: static void PrintlnSourceAction(DfMp3_PlaySources source, const char* action) { if (source & DfMp3_PlaySources_Sd) { Serial.print("SD Card, "); } if (source & DfMp3_PlaySources_Usb) { Serial.print("USB Disk, "); } if (source & DfMp3_PlaySources_Flash) { Serial.print("Flash, "); } Serial.println(action); } static void OnError(uint16_t errorCode) { // see DfMp3_Error for code meaning Serial.println(); Serial.print("Com Error "); Serial.println(errorCode); } static void OnPlayFinished(DfMp3_PlaySources source, uint16_t track) { Serial.print("Play finished for #"); Serial.println(track); } static void OnPlaySourceOnline(DfMp3_PlaySources source) { PrintlnSourceAction(source, "online"); } static void OnPlaySourceInserted(DfMp3_PlaySources source) { PrintlnSourceAction(source, "inserted"); } static void OnPlaySourceRemoved(DfMp3_PlaySources source) { PrintlnSourceAction(source, "removed"); } }; SevenSegmentExtended blue1(21, 22); // CLK, DIO SevenSegmentFun words(21, 22); // CLK, DIO SoftwareSerial secondarySerial(18, 19); // TX, RX DFMiniMp3 mp3(secondarySerial); void configModeCallback (WiFiManager *myWiFiManager) { Serial.println("Entered WiFi Manager config mode.."); Serial.println(WiFi.softAPIP()); Serial.println(myWiFiManager->getConfigPortalSSID()); } //flag for saving data bool shouldSaveConfig = false; //callback notifying us of the need to save config void saveConfigCallback () { Serial.println("Should save config"); shouldSaveConfig = true; } void setup() { words.setBacklight(80); words.begin(); words.scrollingText("R2D2 START", 2);

Many examples in Arduino tell you to embed HTML to your C++ code (look https://github.com/tzapu/WiFiManager/blob/master/wm_strings_en.h), but my approach is different: The frontend is written in different language (TypeScript + Vue), with separate build process (no C compiler involved). It even is tested independently from Arduino code, on PC.

Hello. Some time ago I' ve strugled with seting up wifi manager in esp_idf framework. Most popular wifi manager made by tzapu was not working on esp-idf framework inside PlatformIo. So I have found tonyp7. It started to work after many changes in library code and makefiles. I have some free time and I can make WifiManager suited to bare esp-idf and esp-idf inside PlatformIo. My question is- do somebody need this ? Maybe there are alternatives which i did not find and my work is pointless. Please share your opinion

#include // Using the Arduino Library Manager, install "WifiManager by tzapu" - lib at https://github.com/tzapu/WiFiManager void setup() { WiFiManager wifiManager; // Start a Wifi link wifiManager.autoConnect("NewDevice"); // (on first use: will set up as a Wifi name; set up by selecting new Wifi network on iPhone for instance) } void loop() { }

include // Using the Arduino Library Manager, // install "WifiManager by tzapu" // lib at https://github.com/tzapu/WiFiManager void setup() { WiFiManager wifiManager; // Start a Wifi link. wifiManager.autoConnect("NewDevice"); // (on first use: will set up as // a Wifi name; set up by // selecting new Wifi network on // iPhone for instance) }

Is that fork needed still? It seems like the main project claims support for esp32 now? https://github.com/tzapu/WiFiManager

Use this one instead: https://github.com/tzapu/WiFiManager