添加一些关于midi播放的项目

2025-03-24 14:30:56 +08:00
parent e31eb22077
commit 498b4ef13b
699 changed files with 186162 additions and 1 deletions
@@ -0,0 +1,77 @@
+/******************************************************************************
+* @brief provide generic high-level routines for ARM Cortex M0/M0+ processors. 
+*
+*******************************************************************************/
+
+#include "common.h"
+
+/***********************************************************************/
+/*
+ * Configures the ARM system control register for STOP (deep sleep) mode
+ * and then executes the WFI instruction to enter the mode.
+ *
+ * Parameters:
+ * none
+ *
+ * Note: Might want to change this later to allow for passing in a parameter
+ *       to optionally set the sleep on exit bit.
+ */
+
+void stop (void)
+{
+	/* Set the SLEEPDEEP bit to enable deep sleep mode (STOP) */
+	SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;	
+
+	/* WFI instruction will start entry into STOP mode */
+#ifndef KEIL
+        // If not using KEIL's uVision use the standard assembly command
+	asm("WFI");
+#else
+        // If using KEIL's uVision, use the CMSIS intrinsic
+	__wfi();
+#endif
+}
+/***********************************************************************/
+/*
+ * Configures the ARM system control register for WAIT (sleep) mode
+ * and then executes the WFI instruction to enter the mode.
+ *
+ * Parameters:
+ * none
+ *
+ * Note: Might want to change this later to allow for passing in a parameter
+ *       to optionally set the sleep on exit bit.
+ */
+
+void wait (void)
+{
+	/* Clear the SLEEPDEEP bit to make sure we go into WAIT (sleep) mode instead
+	 * of deep sleep.
+	 */
+	SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;	
+
+	/* WFI instruction will start entry into WAIT mode */
+#ifndef KEIL
+        // If not using KEIL's uVision use the standard assembly command
+	asm("WFI");
+#else
+        // If using KEIL's uVision, use the CMSIS intrinsic
+    __wfi();
+#endif
+}
+/***********************************************************************/
+/*
+ * Change the value of the vector table offset register to the specified value.
+ *
+ * Parameters:
+ * vtor     new value to write to the VTOR
+ */
+
+void write_vtor (int vtor)
+{
+        /* Write the VTOR with the new value */
+        SCB->VTOR = vtor;	
+}
+
+/***********************************************************************/
+