LPC1700CMSIS_Examples - These are the examples provided for [[/users/fran…

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These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!

NVIC/Priority/nvic_priority.c@0:bf7b9fba3924, 2011-03-20 (annotated)

Committer:: frank26080115
Date:: Sun Mar 20 05:38:56 2011 +0000
Revision:: 0:bf7b9fba3924

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User	Revision	Line number	New contents of line
frank26080115	0:bf7b9fba3924	1	/*********************************************************************//
frank26080115	0:bf7b9fba3924	2	* @file nvic_priority.c
frank26080115	0:bf7b9fba3924	3	* @purpose This example used to test NVIC Grouping Priority function
frank26080115	0:bf7b9fba3924	4	* @version 1.0
frank26080115	0:bf7b9fba3924	5	* @date 18. June. 2010
frank26080115	0:bf7b9fba3924	6	* @author NXP MCU SW Application Team
frank26080115	0:bf7b9fba3924	7	*---------------------------------------------------------------------
frank26080115	0:bf7b9fba3924	8	* Software that is described herein is for illustrative purposes only
frank26080115	0:bf7b9fba3924	9	* which provides customers with programming information regarding the
frank26080115	0:bf7b9fba3924	10	* products. This software is supplied "AS IS" without any warranties.
frank26080115	0:bf7b9fba3924	11	* NXP Semiconductors assumes no responsibility or liability for the
frank26080115	0:bf7b9fba3924	12	* use of the software, conveys no license or title under any patent,
frank26080115	0:bf7b9fba3924	13	* copyright, or mask work right to the product. NXP Semiconductors
frank26080115	0:bf7b9fba3924	14	* reserves the right to make changes in the software without
frank26080115	0:bf7b9fba3924	15	* notification. NXP Semiconductors also make no representation or
frank26080115	0:bf7b9fba3924	16	* warranty that such application will be suitable for the specified
frank26080115	0:bf7b9fba3924	17	* use without further testing or modification.
frank26080115	0:bf7b9fba3924	18	**********************************************************************/
frank26080115	0:bf7b9fba3924	19	#include "lpc17xx_libcfg.h"
frank26080115	0:bf7b9fba3924	20	#include "lpc17xx_gpio.h"
frank26080115	0:bf7b9fba3924	21	#include "lpc17xx_nvic.h"
frank26080115	0:bf7b9fba3924	22	#include "lpc17xx_systick.h"
frank26080115	0:bf7b9fba3924	23	#include "lpc17xx_exti.h"
frank26080115	0:bf7b9fba3924	24	#include "lpc17xx_pinsel.h"
frank26080115	0:bf7b9fba3924	25
frank26080115	0:bf7b9fba3924	26	/* Example group ----------------------------------------------------------- */
frank26080115	0:bf7b9fba3924	27	/** @defgroup NVIC_Priority Priority
frank26080115	0:bf7b9fba3924	28	* @ingroup NVIC_Examples
frank26080115	0:bf7b9fba3924	29	* @{
frank26080115	0:bf7b9fba3924	30	*/
frank26080115	0:bf7b9fba3924	31
frank26080115	0:bf7b9fba3924	32	/************************ PRIVATE DEFINTIONS***********************/
frank26080115	0:bf7b9fba3924	33	/* Interrupt mode
frank26080115	0:bf7b9fba3924	34	* - 0: Tail-chaining interrupt
frank26080115	0:bf7b9fba3924	35	* - 1: Late-arriving interrupt
frank26080115	0:bf7b9fba3924	36	*/
frank26080115	0:bf7b9fba3924	37	#define INT_MODE 1
frank26080115	0:bf7b9fba3924	38
frank26080115	0:bf7b9fba3924	39	/************************ PRIVATE FUNCTIONS ***********************/
frank26080115	0:bf7b9fba3924	40	void EINT0_IRQHandler(void);
frank26080115	0:bf7b9fba3924	41	void EINT3_IRQHandler(void);
frank26080115	0:bf7b9fba3924	42
frank26080115	0:bf7b9fba3924	43	void print_menu(void);
frank26080115	0:bf7b9fba3924	44	void delay (void);
frank26080115	0:bf7b9fba3924	45
frank26080115	0:bf7b9fba3924	46	/----------------- INTERRUPT SERVICE ROUTINES --------------------------/
frank26080115	0:bf7b9fba3924	47	/*******************************************************************//
frank26080115	0:bf7b9fba3924	48	* @brief External interrupt 0 handler
frank26080115	0:bf7b9fba3924	49	* This interrupt occurs when pressing button INT0
frank26080115	0:bf7b9fba3924	50	* @param None
frank26080115	0:bf7b9fba3924	51	* @return None
frank26080115	0:bf7b9fba3924	52	***********************************************************************/
frank26080115	0:bf7b9fba3924	53	void EINT0_IRQHandler(void)
frank26080115	0:bf7b9fba3924	54	{
frank26080115	0:bf7b9fba3924	55	uint8_t i;
frank26080115	0:bf7b9fba3924	56	EXTI_ClearEXTIFlag(0);
frank26080115	0:bf7b9fba3924	57	for (i= 0; i<10; i++)
frank26080115	0:bf7b9fba3924	58	{
frank26080115	0:bf7b9fba3924	59	GPIO_SetValue(1,(1<<29));
frank26080115	0:bf7b9fba3924	60	delay();
frank26080115	0:bf7b9fba3924	61	GPIO_ClearValue(1,(1<<29));
frank26080115	0:bf7b9fba3924	62	delay();
frank26080115	0:bf7b9fba3924	63	}
frank26080115	0:bf7b9fba3924	64	}
frank26080115	0:bf7b9fba3924	65
frank26080115	0:bf7b9fba3924	66	/*******************************************************************//
frank26080115	0:bf7b9fba3924	67	* @brief External interrupt 3 handler
frank26080115	0:bf7b9fba3924	68	* This interrupt occurs when turn ADC potentiometer
frank26080115	0:bf7b9fba3924	69	* @param None
frank26080115	0:bf7b9fba3924	70	* @return None
frank26080115	0:bf7b9fba3924	71	***********************************************************************/
frank26080115	0:bf7b9fba3924	72	void EINT3_IRQHandler(void)
frank26080115	0:bf7b9fba3924	73	{
frank26080115	0:bf7b9fba3924	74	uint8_t j;
frank26080115	0:bf7b9fba3924	75	if (GPIO_GetIntStatus(0, 25, 1))
frank26080115	0:bf7b9fba3924	76	{
frank26080115	0:bf7b9fba3924	77	GPIO_ClearInt(0,(1<<25));
frank26080115	0:bf7b9fba3924	78	for (j= 0; j<10; j++)
frank26080115	0:bf7b9fba3924	79	{
frank26080115	0:bf7b9fba3924	80	GPIO_SetValue(1,(1<<28));
frank26080115	0:bf7b9fba3924	81	delay();
frank26080115	0:bf7b9fba3924	82	GPIO_ClearValue(1,(1<<28));
frank26080115	0:bf7b9fba3924	83	delay();
frank26080115	0:bf7b9fba3924	84	}
frank26080115	0:bf7b9fba3924	85	}
frank26080115	0:bf7b9fba3924	86	}
frank26080115	0:bf7b9fba3924	87	/-------------------------PRIVATE FUNCTIONS------------------------------/
frank26080115	0:bf7b9fba3924	88	/*******************************************************************//
frank26080115	0:bf7b9fba3924	89	* @brief delay function
frank26080115	0:bf7b9fba3924	90	* @param[in] none
frank26080115	0:bf7b9fba3924	91	* @return None
frank26080115	0:bf7b9fba3924	92	**********************************************************************/
frank26080115	0:bf7b9fba3924	93	void delay (void) {
frank26080115	0:bf7b9fba3924	94	unsigned int i;
frank26080115	0:bf7b9fba3924	95
frank26080115	0:bf7b9fba3924	96	for (i = 0; i < 0x400000; i++) {
frank26080115	0:bf7b9fba3924	97	}
frank26080115	0:bf7b9fba3924	98	}
frank26080115	0:bf7b9fba3924	99
frank26080115	0:bf7b9fba3924	100	/-------------------------MAIN FUNCTION------------------------------/
frank26080115	0:bf7b9fba3924	101	/*******************************************************************//
frank26080115	0:bf7b9fba3924	102	* @brief c_entry: Main program body
frank26080115	0:bf7b9fba3924	103	* @param[in] None
frank26080115	0:bf7b9fba3924	104	* @return int
frank26080115	0:bf7b9fba3924	105	**********************************************************************/
frank26080115	0:bf7b9fba3924	106	int c_entry (void)
frank26080115	0:bf7b9fba3924	107	{
frank26080115	0:bf7b9fba3924	108	EXTI_InitTypeDef EXTICfg;
frank26080115	0:bf7b9fba3924	109	PINSEL_CFG_Type PinCfg;
frank26080115	0:bf7b9fba3924	110
frank26080115	0:bf7b9fba3924	111	/* Configure:
frank26080115	0:bf7b9fba3924	112	* + LED1: P1.28
frank26080115	0:bf7b9fba3924	113	* + LED2: P1.29
frank26080115	0:bf7b9fba3924	114	*/
frank26080115	0:bf7b9fba3924	115	GPIO_SetDir(1, (1<<28)\|(1<<29), 1);
frank26080115	0:bf7b9fba3924	116
frank26080115	0:bf7b9fba3924	117	/* Setting P2.10 as EINT0 */
frank26080115	0:bf7b9fba3924	118	PinCfg.Funcnum = 1;
frank26080115	0:bf7b9fba3924	119	PinCfg.OpenDrain = 0;
frank26080115	0:bf7b9fba3924	120	PinCfg.Pinmode = 0;
frank26080115	0:bf7b9fba3924	121	PinCfg.Pinnum = 10;
frank26080115	0:bf7b9fba3924	122	PinCfg.Portnum = 2;
frank26080115	0:bf7b9fba3924	123	PINSEL_ConfigPin(&PinCfg);
frank26080115	0:bf7b9fba3924	124
frank26080115	0:bf7b9fba3924	125	/* Initialize External 0 interrupt */
frank26080115	0:bf7b9fba3924	126	EXTI_Init();
frank26080115	0:bf7b9fba3924	127	EXTICfg.EXTI_Line = EXTI_EINT0;
frank26080115	0:bf7b9fba3924	128	/* edge sensitive */
frank26080115	0:bf7b9fba3924	129	EXTICfg.EXTI_Mode = EXTI_MODE_EDGE_SENSITIVE;
frank26080115	0:bf7b9fba3924	130	EXTICfg.EXTI_polarity = EXTI_POLARITY_LOW_ACTIVE_OR_FALLING_EDGE;
frank26080115	0:bf7b9fba3924	131	EXTI_Config(&EXTICfg);
frank26080115	0:bf7b9fba3924	132
frank26080115	0:bf7b9fba3924	133
frank26080115	0:bf7b9fba3924	134	#if (INT_MODE == 0) //same group, different sub-levels (Tail-chaining example)
frank26080115	0:bf7b9fba3924	135	NVIC_SetPriorityGrouping(4); //sets group priorities: 8 - subpriorities: 3
frank26080115	0:bf7b9fba3924	136	NVIC_SetPriority(EINT0_IRQn, 2); //000:10 (bit 7:3) assign eint0 to group 0, sub-priority 2 within group 0
frank26080115	0:bf7b9fba3924	137	NVIC_SetPriority(EINT3_IRQn, 1); //000:01 (bit 7:3) assign gpioint to group 0, sub-priority 1 within group 0
frank26080115	0:bf7b9fba3924	138	#else //different group - (Late-arriving example)
frank26080115	0:bf7b9fba3924	139	NVIC_SetPriorityGrouping(4); //sets group priorities: 8 - subpriorities: 3
frank26080115	0:bf7b9fba3924	140	NVIC_SetPriority(EINT0_IRQn, 0); //000:00 (bit 7:3) assign eint0 to group 0, sub-priority 0 within group 0
frank26080115	0:bf7b9fba3924	141	NVIC_SetPriority(EINT3_IRQn, 4); //001:00 (bit 7:3) assign GPIO int to group 1, sub-priority 0 within group 1
frank26080115	0:bf7b9fba3924	142	#endif
frank26080115	0:bf7b9fba3924	143
frank26080115	0:bf7b9fba3924	144	NVIC_EnableIRQ(EINT0_IRQn);
frank26080115	0:bf7b9fba3924	145	NVIC_EnableIRQ(EINT3_IRQn);
frank26080115	0:bf7b9fba3924	146
frank26080115	0:bf7b9fba3924	147	//Enable GPIO interrupt P0.25/AD0.2
frank26080115	0:bf7b9fba3924	148	GPIO_IntCmd(0,(1<<25),1);
frank26080115	0:bf7b9fba3924	149
frank26080115	0:bf7b9fba3924	150	while(1);
frank26080115	0:bf7b9fba3924	151	return 1;
frank26080115	0:bf7b9fba3924	152	}
frank26080115	0:bf7b9fba3924	153
frank26080115	0:bf7b9fba3924	154	/* With ARM and GHS toolsets, the entry point is main() - this will
frank26080115	0:bf7b9fba3924	155	allow the linker to generate wrapper code to setup stacks, allocate
frank26080115	0:bf7b9fba3924	156	heap area, and initialize and copy code and data segments. For GNU
frank26080115	0:bf7b9fba3924	157	toolsets, the entry point is through __start() in the crt0_gnu.asm
frank26080115	0:bf7b9fba3924	158	file, and that startup code will setup stacks and data */
frank26080115	0:bf7b9fba3924	159	int main(void) {
frank26080115	0:bf7b9fba3924	160	return c_entry();
frank26080115	0:bf7b9fba3924	161	}
frank26080115	0:bf7b9fba3924	162
frank26080115	0:bf7b9fba3924	163	#ifdef DEBUG
frank26080115	0:bf7b9fba3924	164	/*******************************************************************************
frank26080115	0:bf7b9fba3924	165	* @brief Reports the name of the source file and the source line number
frank26080115	0:bf7b9fba3924	166	* where the CHECK_PARAM error has occurred.
frank26080115	0:bf7b9fba3924	167	* @param[in] file Pointer to the source file name
frank26080115	0:bf7b9fba3924	168	* @param[in] line assert_param error line source number
frank26080115	0:bf7b9fba3924	169	* @return None
frank26080115	0:bf7b9fba3924	170	*******************************************************************************/
frank26080115	0:bf7b9fba3924	171	void check_failed(uint8_t *file, uint32_t line) {
frank26080115	0:bf7b9fba3924	172	/* User can add his own implementation to report the file name and line number,
frank26080115	0:bf7b9fba3924	173	ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
frank26080115	0:bf7b9fba3924	174
frank26080115	0:bf7b9fba3924	175	/* Infinite loop */
frank26080115	0:bf7b9fba3924	176	while (1)
frank26080115	0:bf7b9fba3924	177	;
frank26080115	0:bf7b9fba3924	178	}
frank26080115	0:bf7b9fba3924	179	#endif
frank26080115	0:bf7b9fba3924	180
frank26080115	0:bf7b9fba3924	181	/*
frank26080115	0:bf7b9fba3924	182	* @}
frank26080115	0:bf7b9fba3924	183	*/

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Type:	Program
Created:	20 Mar 2011
Imports:	199
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	7

NVIC/Priority/nvic_priority.c@0:bf7b9fba3924, 2011-03-20 (annotated)

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