No Serial Monitor Output For Some Projects - PlatformIO Community Home » Arduino Println N R » No Serial Monitor Output For Some Projects - PlatformIO Community Maybe your like Arduino Print R N Arduino Pro Mini 5v 8mhz Arduino Pro Mini 5v Or 3.3v Arduino Pro Mini 5v Tutorial Arduino Pt1000 Circuit No serial monitor output for some projects PlatformIO IDE w4krl May 16, 2022, 4:35pm 1 There are many topics discussing this same problem but I don’t understand any of the solutions. I am using Platformio 6.0.0 on vsCode. Running a simple program yields the expected serial monitor output. But when I run my real project then nothing shows on the serial monitor. What am I missing? ======= working example: Platformio.ini: [env:d1_mini] platform = espressif8266 board = d1_mini framework = arduino monitor_speed = 115200 upload_speed = 921600 #include <Arduino.h> void setup() { Serial.begin(115200); } void loop() { Serial.println("Test"); delay(500); } > Executing task in folder Blink-D1 Mini: C:\Users\KarlB\.platformio\penv\Scripts\platformio.exe device monitor < --- Available filters and text transformations: colorize, debug, default, direct, esp8266_exception_decoder, nocontrol, printable --- More details at https://bit.ly/pio-monitor-filters --- Miniterm on COM3 115200,8,N,1 --- --- Quit: Ctrl+C | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H --- rl␀l�r␂$␒�n␌␌␌�␌l�␌b|��␂␇␒�r␒b�␌b␄�nn␂lnn␒b␌b␜p�$b␎lrlp�n0␂␌␌�␌l␌�␂␌␌␌b␌n�n�␌�␄␌b��nn'l�␄l`␂�␒␒nn␌$`␂␎␂nr���n␌␌rr�`␂p�n␐␂␌␌r�␜␜b␌␄␂␌b␌n�n␌␄␌b��nn'␌␄l`␂�␒␒nn␌$`␂␎␂nr���n␌␌r␒l`␂␎r��n␌␌r␒l`␂�␂␌␌␌$␄␜␂l`␂��n�`␂Test Test Test Test Test Test ============= Non-working example: platformio.ini [env:d1_mini] platform = espressif8266 board = d1_mini framework = arduino lib_deps = bblanchon/ArduinoJson@^6.19.1 ropg/ezTime@^0.8.3 adafruit/Adafruit GFX Library@^1.10.13 adafruit/Adafruit ST7735 and ST7789 Library@^1.9.0 tzapu/WiFiManager@^0.16.0 datacute/DoubleResetDetector@^1.0.3 adafruit/Adafruit BusIO@^1.11.0 adafruit/Adafruit HTU21DF Library@^1.0.5 adafruit/DHT sensor library@^1.4.3 monitor_speed = 115200 upload_speed = 921600 void setup() { Serial.begin(115200); Serial.println("Start"); . . . } Serial Monitor: > Executing task in folder D1S-Display-WBIO: C:\Users\KarlB\.platformio\penv\Scripts\platformio.exe device monitor --environment d1_mini < --- Available filters and text transformations: colorize, debug, default, direct, esp8266_exception_decoder, nocontrol, printable --- More details at https://bit.ly/pio-monitor-filters --- Miniterm on COM4 115200,8,N,1 --- --- Quit: Ctrl+C | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H --- rd␀d��|␀�d�|␃␌␄␌�␄l�␄c|ǃ␃�␛�s�b�␄c��g'�l'o���␄c␜pćlrd;lx�n�␘␃␄␌�␄l␌��␌␄␌c␄o�<␃�␄��␄c��og�␀$��$`␃�␛␛gn␌�␇l␇␃n{���o␌␄;s�`␂8�g�␐␃␌␄{����␜��␂␄c␌'�|␂␄�␌b��no�␀␄�l`␃�␓␛og␄�␏$␏␃gs�ۓo␌␄{␒d`␃␇s��'␄␌s␛l ␃�␂␄␄쏜|�␄l`␃��g�␇dS maxgerhardt May 16, 2022, 5:03pm 2 w4krl: monitor_speed = 115200 Set monitor_speed = 74880 instead and monitor the non-working project again. Does it print something human readable? w4krl May 16, 2022, 8:28pm 3 Nothing at all just like when it is at 115200. maxgerhardt May 16, 2022, 9:05pm 4 Does it work in the Arduino with the same set of libraries installed and the same code? w4krl May 17, 2022, 4:41pm 5 No, it does not! What is going on? It compiles in the Arduino IDE and runs. The usual string of nonsense comes out. The very last character is the first character of the first string to be printed. This also happens in platformio. void setup() { Serial.begin(115200); Serial.println(“Quark”); . . . } Serial Monitor: [snip]{⸮⸮or$⸮䏇p⸮l⸮⸮’⸮dQ ← first letter of Quark w4krl May 17, 2022, 4:44pm 6 Here are the libraries: // For general sketch #include <Arduino.h> // PlatformIO #include <Wire.h> // [builtin] #include <ESP8266WiFi.h> // [builtin] #include <ArduinoJson.h> // [manager] v6.19.1 #include <ESP8266HTTPClient.h> // [builtin] http // For Wemos TFT 1.4 display shield #include <Adafruit_GFX.h> // [manager] v1.10.13 Core graphics library #include <Adafruit_ST7735.h> // [manager] v1.9.0 Controller chip #include <SPI.h> // [builtin] #include “colors.h” // custom frame colors // For DHT11 sensor #include <Adafruit_Sensor.h> #include <DHT.h> // Time functions by Rop Gonggrijp GitHub - ropg/ezTime: ezTime — pronounced "Easy Time" — is a very easy to use Arduino time and date library that provides NTP network time lookups, extensive timezone support, formatted time and date strings, user events, millisecond precision and more. #include <ezTime.h> // [manager] v0.8.3 NTP & timezone // // For basic WiFi OTA // // #include <ESP8266mDNS.h> // // #include <WiFiUdp.h> // // #include <ArduinoOTA.h> // For HTTPS OTA #include <ESP8266HTTPClient.h> // [builtin] http #include <WiFiClientSecureBearSSL.h> // [builtin] https #include <ESP8266httpUpdate.h> // [builtin] OTA #include “ota.h” // web server paths // For WiFiManager library #include <LittleFS.h> // [builtin] LittleFS File System #include <DNSServer.h> // [builtin] For webserver #include <ESP8266WebServer.h> // [builtin] For webserver #include <WiFiManager.h> // [manager] GitHub - tzapu/WiFiManager: ESP8266 WiFi Connection manager with web captive portal #include <DoubleResetDetector.h> // [manager] Stephen Denne GitHub - datacute/DoubleResetDetector: Library to detect a double reset, using ESP8266 RTC User Memory /* maxgerhardt May 17, 2022, 5:46pm 7 It may be that one libraries allocates a global object whose constructor is crashing. If you just #include the headers but not use any objects within them in the sketch, can you one-by-one remove the #include.. lines for each library until it works again to find the culprit? w4krl May 18, 2022, 9:34pm 8 Let me make certain I understand you. Let’s say I am using the LittleFS library. I comment out every use of it and then comment out the include. Then I go to another library until teh serial print problem is solved. Correct? Do I need to remove the libraries in any other method? w4krl May 18, 2022, 11:15pm 9 OK, this was a stupid self inflicted wound. In a fit of misguided “cleverness” I redefined the TX and RX as output pins to supply an I2C device. This interfered with the serial output. Thank you so much for the help. I really appreciated it. I’ve posted teh offending code below so that no one else tries to do the same thing. Serial.begin(115200); Serial.println("Start"); // redefine TX & RX for output of +3.3V & 0V pinMode(RX_PLUS, FUNCTION_3); // plus pinMode(RX_PLUS, OUTPUT); digitalWrite(RX_PLUS, HIGH); pinMode(TX_MINUS, FUNCTION_3); // minus pinMode(TX_MINUS, OUTPUT); digitalWrite(TX_MINUS, LOW); 1 Like Tag » Arduino Println N R intln() - Arduino Reference int() - Arduino Reference int For Floating Numbers - Arduino Forum Won't Detect ad Most Of The Time. - Arduino Forum Arduino Nano Or intln() Corrupts Data Lcd Printing This Wierd Simbol - Displays - Arduino Forum Confusing Code Error - Programming Questions - Arduino Forum Problem With RS485 And Serial Print And ModbusMaster - #4 By Blh64 Problem With Python And Arduino In Pyserial - C++ - Stack Overflow Arduino + Serial Dat - Beginners - TouchDesigner Forum Communication Between Raspberry Pi Python And Arduino Arduino LM35DZ X6 Logger - Gists · GitHub Arduino Serial Monitor Tutorial: Basics And Alternatives To Try [PDF] Cursul 4 Programare Arduino - UPIT
