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StamPLC SD Card
StamPLC SD example program
In this example, StamPLC uses the ESP32 Arduino SD library as the SD card driver. Refer to the example below to achieve a simple SD card test. For more API details, please refer to the arduino-esp32 source code.
cpp
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/*
* SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
*
* SPDX-License-Identifier: MIT
*/
#include <Arduino.h>
#include <M5StamPLC.h>
#include <SD.h>
void setup()
{
delay(3000);
/* Enable SD card */
auto config = M5StamPLC.config();
config.enableSdCard = true;
M5StamPLC.config(config);
M5StamPLC.begin();
}
void loop()
{
static int count = 0;
// Write file
printf("\nSD card write test\n");
auto file = SD.open("/test.txt", FILE_WRITE, true);
if (file) {
file.printf("Hello, World! Count: %d\n", count);
file.close();
printf("SD card write success\n");
} else {
printf("Failed to open file\n");
}
// Read file
printf("\nSD card read test\n");
file = SD.open("/test.txt");
if (file) {
printf("SD card read success:\n");
while (file.available()) {
printf("%c", file.read());
}
} else {
printf("Failed to open file\n");
}
count++;
delay(1000);
}