Diff: NVIC/VecTable_Relocation/vt_relocation.c

Revision:

0:bf7b9fba3924

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/NVIC/VecTable_Relocation/vt_relocation.c	Sun Mar 20 05:38:56 2011 +0000
@@ -0,0 +1,171 @@
+/***********************************************************************//**
+ * @file		vt_relocation.c
+ * @purpose		This example used to test NVIC Vector Table relocation
+ * 				function
+ * @version		1.0
+ * @date		18. June. 2010
+ * @author		NXP MCU SW Application Team
+ *---------------------------------------------------------------------
+ * 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.
+ **********************************************************************/
+#include <stdio.h>
+
+#include "lpc17xx_libcfg.h"
+#include "debug_frmwrk.h"
+#include "lpc17xx_gpio.h"
+#include "lpc17xx_nvic.h"
+#include "lpc17xx_systick.h"
+
+
+/* Example group ----------------------------------------------------------- */
+/** @defgroup NVIC_VecTable_Relocation	VecTable_Relocation
+ * @ingroup NVIC_Examples
+ * @{
+ */
+
+/************************** PRIVATE DEFINITIONS ***********************/
+/* Vector Table Offset */
+#define VTOR_OFFSET		0x20080000
+
+/************************** PRIVATE VARIABLES *************************/
+uint8_t menu[]=
+	"********************************************************************************\n\r"
+	"Hello NXP Semiconductors \n\r"
+	"Privileged demo \n\r"
+	"\t - MCU: LPC17xx \n\r"
+	"\t - Core: ARM CORTEX-M3 \n\r"
+	"\t - Communicate via: UART0 - 115200 bps \n\r"
+	"This example used to test NVIC Vector Table Relocation function\n\r"
+	"********************************************************************************\n\r";
+FunctionalState Cur_State = DISABLE;
+
+/************************** PRIVATE FUNCTIONS *************************/
+
+void SysTick_Handler(void);
+void print_menu(void);
+
+/*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/
+/*********************************************************************//**
+ * @brief 		SysTick interrupt handler
+ * @param		None
+ * @return 		None
+ ***********************************************************************/
+void SysTick_Handler(void)
+{
+	//Clear System Tick counter flag
+	SYSTICK_ClearCounterFlag();
+	//toggle P0.0
+	if (Cur_State == ENABLE)
+	{
+		//pull-down pin
+		GPIO_ClearValue(1, (1<<28));
+		Cur_State = DISABLE;
+	}
+	else
+	{
+		GPIO_SetValue(1, (1<<28));
+		Cur_State = ENABLE;
+	}
+}
+/*-------------------------PRIVATE FUNCTIONS------------------------------*/
+/*********************************************************************//**
+ * @brief		Print Welcome menu
+ * @param[in]	none
+ * @return 		None
+ **********************************************************************/
+void print_menu(void)
+{
+	_DBG(menu);
+}
+
+
+/*-------------------------MAIN FUNCTION------------------------------*/
+/*********************************************************************//**
+ * @brief		c_entry: Main program body
+ * @param[in]	None
+ * @return 		int
+ **********************************************************************/
+int c_entry (void)
+{
+	/* Initialize debug via UART0
+	 * – 115200bps
+	 * – 8 data bit
+	 * – No parity
+	 * – 1 stop bit
+	 * – No flow control
+	 */
+	debug_frmwrk_init();
+
+	// print welcome screen
+	print_menu();
+
+	//Use P0.0 to test System Tick interrupt
+	GPIO_SetDir(1, (1<<28), 1); //Set P0.0 as output
+
+	_DBG("Remapping Vector Table at address: ");
+	_DBH32(VTOR_OFFSET); _DBG_("");
+	NVIC_SetVTOR(VTOR_OFFSET);
+
+	/* Copy Vector Table from 0x00000000 to new address
+	 * In ROM mode: Vector Interrupt Table is initialized at 0x00000000
+	 * In RAM mode: Vector Interrupt Table is initialized at 0x10000000
+	 * Aligned: 256 words
+	 */
+
+#if(__RAM_MODE__==0)//Run in ROM mode
+	memcpy(VTOR_OFFSET, 0x00000000, 256*4);
+#else
+	memcpy(VTOR_OFFSET, 0x10000000, 256*4);
+#endif
+
+	_DBG_("If Vector Table remapping is successful, LED P1.28 will blink by using SysTick interrupt");
+	//Initialize System Tick with 100ms time interval
+	SYSTICK_InternalInit(100);
+	//Enable System Tick interrupt
+	SYSTICK_IntCmd(ENABLE);
+	//Enable System Tick Counter
+	SYSTICK_Cmd(ENABLE);
+
+	while(1);
+	return 1;
+}
+
+/* With ARM and GHS toolsets, the entry point is main() - this will
+ allow the linker to generate wrapper code to setup stacks, allocate
+ heap area, and initialize and copy code and data segments. For GNU
+ toolsets, the entry point is through __start() in the crt0_gnu.asm
+ file, and that startup code will setup stacks and data */
+int main(void) {
+	return c_entry();
+}
+
+#ifdef  DEBUG
+/*******************************************************************************
+ * @brief		Reports the name of the source file and the source line number
+ * 				where the CHECK_PARAM error has occurred.
+ * @param[in]	file Pointer to the source file name
+ * @param[in]    line assert_param error line source number
+ * @return		None
+ *******************************************************************************/
+void check_failed(uint8_t *file, uint32_t line) {
+	/* User can add his own implementation to report the file name and line number,
+	 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+
+	/* Infinite loop */
+	while (1)
+		;
+}
+#endif
+
+/*
+ * @}
+ */