add lpcopen lpc11u6x files

hw/mcu/nxp/lpc_chip_11u6x/src/chip_11u6x.c

@@ -0,0 +1,84 @@
+/*
+ * @brief LPC11u6x Miscellaneous chip specific functions
+ *
+ * @note
+ * Copyright(C) NXP Semiconductors, 2013
+ * All rights reserved.
+ *
+ * @par
+ * Software that is described herein is for illustrative purposes only
+ * which provides customers with programming information regarding the
+ * LPC products.  This software is supplied "AS IS" without any warranties of
+ * any kind, and NXP Semiconductors and its licensor disclaim any and
+ * all warranties, express or implied, including all implied warranties of
+ * merchantability, fitness for a particular purpose and non-infringement of
+ * intellectual property rights.  NXP Semiconductors assumes no responsibility
+ * or liability for the use of the software, conveys no license or rights under any
+ * patent, copyright, mask work right, or any other intellectual property rights in
+ * or to any products. NXP Semiconductors reserves the right to make changes
+ * in the software without notification. NXP Semiconductors also makes no
+ * representation or warranty that such application will be suitable for the
+ * specified use without further testing or modification.
+ *
+ * @par
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation is hereby granted, under NXP Semiconductors' and its
+ * licensor's relevant copyrights in the software, without fee, provided that it
+ * is used in conjunction with NXP Semiconductors microcontrollers.  This
+ * copyright, permission, and disclaimer notice must appear in all copies of
+ * this code.
+ */
+
+#include "chip.h"
+
+/*****************************************************************************
+ * Private types/enumerations/variables
+ ****************************************************************************/
+
+/*****************************************************************************
+ * Public types/enumerations/variables
+ ****************************************************************************/
+
+/* System Clock Frequency (Core Clock) */
+uint32_t SystemCoreClock;
+
+/*****************************************************************************
+ * Private functions
+ ****************************************************************************/
+
+/*****************************************************************************
+ * Public functions
+ ****************************************************************************/
+
+/* Update system core clock rate, should be called if the system has
+   a clock rate change */
+void SystemCoreClockUpdate(void)
+{
+	/* CPU core speed */
+	SystemCoreClock = Chip_Clock_GetSystemClockRate();
+}
+
+void Chip_USB_Init(void)
+{
+	/* Set USB PLL input to main oscillator */
+	Chip_Clock_SetUSBPLLSource(SYSCTL_USBPLLCLKSRC_MAINOSC);
+	/* Setup USB PLL  (FCLKIN = 12MHz) * 4 = 48MHz
+	   MSEL = 3 (this is pre-decremented), PSEL = 1 (for P = 2)
+	   FCLKOUT = FCLKIN * (MSEL + 1) = 12MHz * 4 = 48MHz
+	   FCCO = FCLKOUT * 2 * P = 48MHz * 2 * 2 = 192MHz (within FCCO range) */
+	Chip_Clock_SetupUSBPLL(3, 1);
+
+	/* Powerup USB PLL */
+	Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_USBPLL_PD);
+
+	/* Wait for PLL to lock */
+	while (!Chip_Clock_IsUSBPLLLocked()) {}
+
+	/* enable USB main clock */
+	Chip_Clock_SetUSBClockSource(SYSCTL_USBCLKSRC_PLLOUT, 1);
+	/* Enable AHB clock to the USB block and USB RAM. */
+	Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_USB);
+	Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_USBRAM);
+	/* power UP USB Phy */
+	Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_USBPAD_PD);
+}