Welcome - Serial CLI and Plotter

I'm just a passionate engineer, wrestling daily with complex microcontroller debugging. Serial CLI and Plotter has been my lifesaver—a powerful tool that transforms raw data from Arduino, STM32, Microchip, and countless other microcontrollers into clear, real-time insights via its intuitive CLI and plotting features.

There were days when I felt overwhelmed by the sheer complexity of my projects. But with this application, I could watch live graphs unfold as I fed in serial data; the patterns revealed hidden issues and guided me to solutions. Its simplicity and elegant interface made it easy to use and reliable for troubleshooting even the most intricate systems.

Whether you’re using Arduino, STM32, Microchip, or any other brand of microcontrollers, this tool provides a streamlined, user-friendly experience that cuts through the noise. It is my secret weapon that not only saved endless hours but also inspired confidence amidst chaos.

Getting Started Example


 // Arduino example that sends sensor data as JSON
 void setup() {
     Serial.begin(115200);
 }
 
 void loop() {
     // Simulate sensor readings
     float temp = analogRead(A0) * 0.1;    // Example temp sensor
     float humid = analogRead(A1) * 0.1;     // Example humidity sensor
     // Create JSON string
     Serial.print("{");
     Serial.print("\"temperature\":");
     Serial.print(temp);
     Serial.print(",");
     Serial.print("\"humidity\":");
     Serial.print(humid);
     Serial.println("}");
     delay(1000);  // Update every second
 }


 // STM32 example using format_json to send sensor data as JSON
 #include "stm32f1xx.h"
 #include <stdio.h>
 #include <stdarg.h>
 
 void format_json(char *buffer, size_t buffer_size, int num_pairs, ...) {
     va_list args;
     va_start(args, num_pairs);
     size_t offset = snprintf(buffer, buffer_size, "{");
     for (int i = 0; i < num_pairs; i++) {
         const char *key = va_arg(args, const char *);
         double value = va_arg(args, double);
         offset += snprintf(buffer + offset, buffer_size - offset,
             "\"%s\": %.2f%s", key, value, (i < num_pairs - 1) ? ", " : "");
     }
     snprintf(buffer + offset, buffer_size - offset, "}\n");
     va_end(args);
 }
 

 int main(void) {
     char buffer[256];
     //setup uart for printf or use HAL_UART
     while(1) {
         float temp = 25.4; // Sample temperature
         float humid = 65.2; // Sample humidity
         format_json(buffer, sizeof(buffer), 2, "temperature", temp, "humidity", humid);
         printf("%s", buffer);
         HAL_Delay(1000); // Delay for 1 second
     }
     return 0;
 }