The best, fastest and most reliable way I've found to access the µSD card on the Tab5 is via the SD_MMC.h library. Try the below;
#include <M5Unified.h> #include <SD_MMC.h> #define sd_D0 GPIO_NUM_39 #define sd_D1 GPIO_NUM_40 #define sd_D2 GPIO_NUM_41 #define sd_D3 GPIO_NUM_42 #define sd_CLK GPIO_NUM_43 #define sd_CMD GPIO_NUM_44 #define GPS_RX_PIN 48 // CoreS3 GPIO RX #define GPS_TX_PIN 2 // CoreS3 GPIO TX #define sd_speed 20000 void setup() { M5.delay(500); M5.begin(); M5.Lcd.setTextColor(GREEN, BLACK); M5.Lcd.setTextFont(2); SD_MMC.setPins(sd_CLK, sd_CMD, sd_D0, sd_D1, sd_D2, sd_D3); M5.Lcd.println("Mounting Tab5 µSD"); //M5.delay(5000); if (!SD_MMC.begin("/sdcard", false, false, sd_speed)) { // SD_MMC.begin("/sdcard", false, false, sd_speed) M5.Lcd.println("µSD mount failed!"); while (1); } else { M5.Lcd.println("µSD mounted."); } // List files on SD card root File root = SD_MMC.open("/"); if (!root) { M5.Lcd.println("Failed to open root dir"); } else { M5.Lcd.println("Files:"); File file = root.openNextFile(); while (file) { M5.Lcd.println(file.name()); file = root.openNextFile(); } root.close(); } } void loop() { M5.delay(50); }K
