Circuit Documentation

Summary

This document provides a detailed overview of a circuit that integrates an ESP32-C3 microcontroller with a Micro SD Card Module. The ESP32-C3 is used to interface with the SD card for data storage and retrieval. The document includes a list of components, wiring details, and the embedded code used in the microcontroller.

Component List

ESP32-C3 Supermini

• Description: A compact and powerful microcontroller with built-in Wi-Fi and Bluetooth capabilities.
• Pins: GPIO05, GPIO06, GPIO07, GPIO08, GPIO09, GPIO10, GPIO20, GPIO21, GPIO00, GPIO01, GPIO02, GPIO03, GPIO04, 3.3V, GND, +5V

Micro SD Card Module

• Description: A module used to interface with micro SD cards for data storage.
• Pins: cs, sck, mosi, miso, vcc, gnd

Wiring Details

ESP32-C3 Supermini

• GPIO05: Connected to mosi pin of the Micro SD Card Module
• GPIO07: Connected to cs pin of the Micro SD Card Module
• GPIO08: Connected to miso pin of the Micro SD Card Module
• GPIO04: Connected to sck pin of the Micro SD Card Module
• 3.3V: Connected to vcc pin of the Micro SD Card Module
• GND: Connected to gnd pin of the Micro SD Card Module

Micro SD Card Module

• mosi: Connected to GPIO05 pin of the ESP32-C3 Supermini
• cs: Connected to GPIO07 pin of the ESP32-C3 Supermini
• miso: Connected to GPIO08 pin of the ESP32-C3 Supermini
• sck: Connected to GPIO04 pin of the ESP32-C3 Supermini
• vcc: Connected to 3.3V pin of the ESP32-C3 Supermini
• gnd: Connected to GND pin of the ESP32-C3 Supermini

Code Documentation

ESP32-C3 Supermini Code

#include <SPI.h>
#include <SD.h>

// Define the chip select pin
const int chipSelect = 7;  // GPIO 7 as Chip Select for SD card

void setup() {
  // Start the serial communication
  Serial.begin(115200);
  Serial.println("Hello, ESP32-C3!");

  // Initialize SPI with the correct pins (SCK, MISO, MOSI, CS)
  SPI.begin(4, 8, 5, chipSelect);  // (SCK, MISO, MOSI, CS)

  Serial.println("Initializing SD card...");

  if (!SD.begin(chipSelect)) {
    Serial.println("SD Card initialization failed!");
    return;
  }
  Serial.println("SD card initialized successfully.");
}

void loop() {
  // Main loop - You can add your SD card read/write operations here.
  delay(1000);  // Just a delay for simulation purposes, adjust as needed
}

This code initializes the SPI interface and the SD card module. It sets up the serial communication for debugging purposes and checks if the SD card is properly initialized. If the initialization fails, it prints an error message. The main loop currently contains a delay, which can be replaced with actual read/write operations to the SD card.