4.2 inch version not displaying anything

[EagleeyeKai]

Hi, I already used this lovely peace of software but it is not working any longer. I am using several different ususal §SP32 dev boards and the Waveshare 4.3 inch EPD. In the arduino IDE, I updated all libraries and board definitions. The EPD is connected as described and my own credentials are set and checked.

However, after compiling the sketch and uploading it to the board, the display stays white / unchanged. The serial monitor shows that a connection to my WifI was established but nothing else happens.

Is there a known problem with the newest versions of the libraries? Is there any chance to debug my problem?

Any help is highly appreciated.

Thanks!!

PS: A hello world Test sketch works perfectly...

[AWSW-de]

Hi, I had something similar - as it sounds to me from your description…

Is the board able to reach the named time server ?

HTH

[EagleeyeKai]

How can I check this?

[G6EJD]

In the credentials file is a test url, enter your API key there and then click on the line it should return the JSON data

[EagleeyeKai]

The test link is regarding OWM, isnt it? But this works and shows the weather data... I can also ping the time server 0.europe.pool.ntp.org from my terminal

[G6EJD]

Which ESP32 extension are you using 1.0.6? IDE 1.8.13? Are you using a known good city location? Try London or Paris The serial port should show the weather data being received it’s doing no more than the browser is doing.

[EagleeyeKai]

IDE 1.8.13 and ESP32 V1.0.6

I was using Frankfurt, germany, but tried London, UK

` String City = "London"; // Your home city See: http://bulk.openweathermap.org/sample/ String Country = "UK"; // Your _ISO-3166-1_two-letter_country_code country code, on OWM find your nearest city and the country code is displayed // https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes String Language = "EN"; // NOTE: Only the weather description is translated by OWM // Examples: Arabic (AR) Czech (CZ) English (EN) Greek (EL) Persian(Farsi) (FA) Galician (GL) Hungarian (HU) Japanese (JA) // Korean (KR) Latvian (LA) Lithuanian (LT) Macedonian (MK) Slovak (SK) Slovenian (SL) Vietnamese (VI) String Hemisphere = "north"; // or "south"
String Units = "M"; // Use 'M' for Metric or I for Imperial //const char Timezone = "GMT0BST,M3.5.0/01,M10.5.0/02"; // Choose your time zone from: https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv // See below for examples const char ntpServer = "0.europe.pool.ntp.org"; // Or, choose a time server close to you, but in most cases it's best to use pool.ntp.org to find an NTP server // then the NTP system decides e.g. 0.pool.ntp.org, 1.pool.ntp.org as the NTP syem tries to find the closest available servers // EU "0.europe.pool.ntp.org" // US "0.north-america.pool.ntp.org" // See: https://www.ntppool.org/en/
int gmtOffset_sec = 0; // UK normal time is GMT, so GMT Offset is 0, for US (-5Hrs) is typically -18000, AU is typically (+8hrs) 28800 int daylightOffset_sec = 3600; // In the UK DST is +1hr or 3600-secs, other countries may use 2hrs 7200 or 30-mins 1800 or 5.5hrs 19800 Ahead of GMT use + offset behind - offset

// Example time zones //const char Timezone = "MET-1METDST,M3.5.0/01,M10.5.0/02"; // Most of Europe const char Timezone = "CET-1CEST,M3.5.0,M10.5.0/3"; // Central Europe `

After compiling and uploading, the serial monitor shows the following:

17:34:21.160 -> rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) 17:34:21.160 -> configsip: 0, SPIWP:0xee 17:34:21.160 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 17:34:21.160 -> mode:DIO, clock div:1 17:34:21.160 -> load:0x3fff0018,len:4 17:34:21.160 -> load:0x3fff001c,len:1216 17:34:21.160 -> ho 0 tail 12 room 4 17:34:21.194 -> load:0x40078000,len:10944 17:34:21.194 -> load:0x40080400,len:6388 17:34:21.194 -> entry 0x400806b4 17:34:21.473 -> 17:34:21.473 -> Connecting to: Schwalbennest 17:34:23.730 -> WiFi connected at: 192.168.0.41 17:34:23.835 ->

[G6EJD]

can you send me the code to david.g6ejd@gmail.com

[EagleeyeKai]

I just sent you the code, the compiler and terminal output..

[EagleeyeKai]

David, thanks a lot for helping me out and providing the files that helped me compile the project. Now it works :)

[G6EJD]

Good to hear, it was unfortunately the ArduinoJSON library that was causing the problems, I have already updated the library here, but will refresh all the files when I’ve tested each one.