touch & sd working

fatfs_time.c

@@ -0,0 +1,22 @@
+/*-----------------------------------------------------------------------*/
+/* Get current time for FatFS                                            */
+/*-----------------------------------------------------------------------*/
+
+#include "ff.h"
+#include "pico/stdlib.h"
+
+/* Get current time */
+DWORD get_fattime (void)
+{
+    // Return a fixed timestamp (2024-01-01 00:00:00)
+    // In a real application, you would get this from an RTC
+    // Format: bit31:25=Year(0-127 +1980), bit24:21=Month(1-12), bit20:16=Day(1-31)
+    //         bit15:11=Hour(0-23), bit10:5=Minute(0-59), bit4:0=Second/2(0-29)
+    
+    return ((DWORD)(2024 - 1980) << 25)  // Year: 2024
+         | ((DWORD)1 << 21)              // Month: January
+         | ((DWORD)1 << 16)              // Day: 1
+         | ((DWORD)0 << 11)              // Hour: 0
+         | ((DWORD)0 << 5)               // Minute: 0
+         | ((DWORD)0 >> 1);              // Second: 0
+}