Diff: source/lpc17xx_nvic.c

Revision:

0:1063a091a062

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/lpc17xx_nvic.c	Wed Feb 17 16:22:39 2010 +0000
@@ -0,0 +1,135 @@
+/**
+ * @file	: lpc17xx_nvic.c
+ * @brief	: Contains all expansion functions support for
+ * 				NVIC firmware library on LPC17xx. The main
+ * 				NVIC functions are defined in core_cm3.h
+ * @version	: 1.0
+ * @date	: 18. Mar. 2009
+ * @author	: HieuNguyen
+ **************************************************************************
+ * Software that is described herein is for illustrative purposes only
+ * which provides customers with programming information regarding the
+ * products. This software is supplied "AS IS" without any warranties.
+ * NXP Semiconductors assumes no responsibility or liability for the
+ * use of the software, conveys no license or title under any patent,
+ * copyright, or mask work right to the product. NXP Semiconductors
+ * reserves the right to make changes in the software without
+ * notification. NXP Semiconductors also make no representation or
+ * warranty that such application will be suitable for the specified
+ * use without further testing or modification.
+ **********************************************************************/
+
+/* Peripheral group ----------------------------------------------------------- */
+/** @addtogroup NVIC
+ * @{
+ */
+
+/* Includes ------------------------------------------------------------------- */
+#include "lpc17xx_nvic.h"
+
+
+/* Private Macros ------------------------------------------------------------- */
+/** @addtogroup NVIC_Private_Macros
+ * @{
+ */
+
+/* Vector table offset bit mask */
+#define NVIC_VTOR_MASK              0x3FFFFF80
+
+/**
+ * @}
+ */
+
+
+/* Public Functions ----------------------------------------------------------- */
+/** @addtogroup NVIC_Public_Functions
+ * @{
+ */
+
+
+/*****************************************************************************//**
+ * @brief		De-initializes the NVIC peripheral registers to their default
+ * 				reset values.
+ * @param		None
+ * @return      None
+ *
+ * These following NVIC peripheral registers will be de-initialized:
+ * - Disable Interrupt (32 IRQ interrupt sources that matched with LPC17xx)
+ * - Clear all Pending Interrupts (32 IRQ interrupt source that matched with LPC17xx)
+ * - Clear all Interrupt Priorities (32 IRQ interrupt source that matched with LPC17xx)
+ *******************************************************************************/
+void NVIC_DeInit(void)
+{
+	uint8_t tmp;
+
+	/* Disable all interrupts */
+	NVIC->ICER[0] = 0xFFFFFFFF;
+	NVIC->ICER[1] = 0x00000001;
+	/* Clear all pending interrupts */
+	NVIC->ICPR[0] = 0xFFFFFFFF;
+	NVIC->ICPR[1] = 0x00000001;
+
+	/* Clear all interrupt priority */
+	for (tmp = 0; tmp < 32; tmp++) {
+		NVIC->IP[tmp] = 0x00;
+	}
+}
+
+/*****************************************************************************//**
+ * @brief			De-initializes the SCB peripheral registers to their default
+ *                  reset values.
+ * @param			none
+ * @return 			none
+ *
+ * These following SCB NVIC peripheral registers will be de-initialized:
+ * - Interrupt Control State register
+ * - Interrupt Vector Table Offset register
+ * - Application Interrupt/Reset Control register
+ * - System Control register
+ * - Configuration Control register
+ * - System Handlers Priority Registers
+ * - System Handler Control and State Register
+ * - Configurable Fault Status Register
+ * - Hard Fault Status Register
+ * - Debug Fault Status Register
+ *******************************************************************************/
+void NVIC_SCBDeInit(void)
+{
+	uint8_t tmp;
+
+	SCB->ICSR = 0x0A000000;
+	SCB->VTOR = 0x00000000;
+	SCB->AIRCR = 0x05FA0000;
+	SCB->SCR = 0x00000000;
+	SCB->CCR = 0x00000000;
+
+	for (tmp = 0; tmp < 32; tmp++) {
+		SCB->SHP[tmp] = 0x00;
+	}
+
+	SCB->SHCSR = 0x00000000;
+	SCB->CFSR = 0xFFFFFFFF;
+	SCB->HFSR = 0xFFFFFFFF;
+	SCB->DFSR = 0xFFFFFFFF;
+}
+
+
+/*****************************************************************************//**
+ * @brief		Set Vector Table Offset value
+ * @param		offset Offset value
+ * @return      None
+ *******************************************************************************/
+void NVIC_SetVTOR(uint32_t offset)
+{
+	SCB->VTOR  = (offset & NVIC_VTOR_MASK);
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* --------------------------------- End Of File ------------------------------ */