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

Users » frank26080115 » Code » LPC1700CMSIS_Examples

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

EMAC/Easy_Web/ADC.c@0:bf7b9fba3924, 2011-03-20 (annotated)

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

Who changed what in which revision?

User	Revision	Line number	New contents of line
frank26080115	0:bf7b9fba3924	1	/*----------------------------------------------------------------------------
frank26080115	0:bf7b9fba3924	2	* Name: ADC.c
frank26080115	0:bf7b9fba3924	3	* Purpose: MCB1700 low level ADC functions
frank26080115	0:bf7b9fba3924	4	* Version: V1.00
frank26080115	0:bf7b9fba3924	5	* Note(s):
frank26080115	0:bf7b9fba3924	6	*----------------------------------------------------------------------------
frank26080115	0:bf7b9fba3924	7	* This file is part of the uVision/ARM development tools.
frank26080115	0:bf7b9fba3924	8	* This software may only be used under the terms of a valid, current,
frank26080115	0:bf7b9fba3924	9	* end user licence from KEIL for a compatible version of KEIL software
frank26080115	0:bf7b9fba3924	10	* development tools. Nothing else gives you the right to use this software.
frank26080115	0:bf7b9fba3924	11	*
frank26080115	0:bf7b9fba3924	12	* This software is supplied "AS IS" without warranties of any kind.
frank26080115	0:bf7b9fba3924	13	*
frank26080115	0:bf7b9fba3924	14	* Copyright (c) 2009 Keil - An ARM Company. All rights reserved.
frank26080115	0:bf7b9fba3924	15	*----------------------------------------------------------------------------
frank26080115	0:bf7b9fba3924	16	* History:
frank26080115	0:bf7b9fba3924	17	* V1.00 Initial Version
frank26080115	0:bf7b9fba3924	18	----------------------------------------------------------------------------/
frank26080115	0:bf7b9fba3924	19
frank26080115	0:bf7b9fba3924	20	#include "LPC17xx.h" /* LPC17xx definitions */
frank26080115	0:bf7b9fba3924	21	#include "ADC.h"
frank26080115	0:bf7b9fba3924	22
frank26080115	0:bf7b9fba3924	23	/*----------------------------------------------------------------------------
frank26080115	0:bf7b9fba3924	24	initialize ADC Pins
frank26080115	0:bf7b9fba3924	25	----------------------------------------------------------------------------/
frank26080115	0:bf7b9fba3924	26	void ADC_init (void) {
frank26080115	0:bf7b9fba3924	27	#ifdef MCB_LPC_1768
frank26080115	0:bf7b9fba3924	28	/* Using MCB1700 board :
frank26080115	0:bf7b9fba3924	29	* ADC channel 2 is available
frank26080115	0:bf7b9fba3924	30	*/
frank26080115	0:bf7b9fba3924	31	LPC_PINCON->PINSEL1 &= ~(3<<18); /* P0.25 is GPIO */
frank26080115	0:bf7b9fba3924	32	LPC_PINCON->PINSEL1 \|= (1<<18); /* P0.25 is AD0.2 */
frank26080115	0:bf7b9fba3924	33
frank26080115	0:bf7b9fba3924	34	LPC_SC->PCONP \|= (1<<12); /* Enable power to ADC block */
frank26080115	0:bf7b9fba3924	35
frank26080115	0:bf7b9fba3924	36	LPC_ADC->ADCR = (1<< 2) \| /* select AD0.2 pin */
frank26080115	0:bf7b9fba3924	37	(1<< 8) \|
frank26080115	0:bf7b9fba3924	38	(1<<21); /* enable ADC */
frank26080115	0:bf7b9fba3924	39	#elif defined(IAR_LPC_1768)
frank26080115	0:bf7b9fba3924	40	/* Using IAR LPC1768 KickStart board
frank26080115	0:bf7b9fba3924	41	* ADC channel 5 is available
frank26080115	0:bf7b9fba3924	42	*/
frank26080115	0:bf7b9fba3924	43	LPC_PINCON->PINSEL3 \|= (3<<30); /* P1.31 is AD0.5 */
frank26080115	0:bf7b9fba3924	44
frank26080115	0:bf7b9fba3924	45	LPC_SC->PCONP \|= (1<<12); /* Enable power to ADC block */
frank26080115	0:bf7b9fba3924	46
frank26080115	0:bf7b9fba3924	47	LPC_ADC->ADCR = (1<<5) \| /* select AD0.5 pin */
frank26080115	0:bf7b9fba3924	48	(1<< 8) \|
frank26080115	0:bf7b9fba3924	49	(1<<21); /* enable ADC */
frank26080115	0:bf7b9fba3924	50	#endif
frank26080115	0:bf7b9fba3924	51	}
frank26080115	0:bf7b9fba3924	52
frank26080115	0:bf7b9fba3924	53
frank26080115	0:bf7b9fba3924	54	/*----------------------------------------------------------------------------
frank26080115	0:bf7b9fba3924	55	start ADC Conversion
frank26080115	0:bf7b9fba3924	56	----------------------------------------------------------------------------/
frank26080115	0:bf7b9fba3924	57	void ADC_startCnv (void) {
frank26080115	0:bf7b9fba3924	58	LPC_ADC->ADCR &= ~(7<<24); /* stop conversion */
frank26080115	0:bf7b9fba3924	59	LPC_ADC->ADCR \|= (1<<24); /* start conversion */
frank26080115	0:bf7b9fba3924	60	}
frank26080115	0:bf7b9fba3924	61
frank26080115	0:bf7b9fba3924	62
frank26080115	0:bf7b9fba3924	63	/*----------------------------------------------------------------------------
frank26080115	0:bf7b9fba3924	64	stop ADC Conversion
frank26080115	0:bf7b9fba3924	65	----------------------------------------------------------------------------/
frank26080115	0:bf7b9fba3924	66	void ADC_stopCnv (void) {
frank26080115	0:bf7b9fba3924	67	LPC_ADC->ADCR &= ~(7<<24); /* stop conversion */
frank26080115	0:bf7b9fba3924	68	}
frank26080115	0:bf7b9fba3924	69
frank26080115	0:bf7b9fba3924	70
frank26080115	0:bf7b9fba3924	71	/*----------------------------------------------------------------------------
frank26080115	0:bf7b9fba3924	72	get converted ADC value
frank26080115	0:bf7b9fba3924	73	----------------------------------------------------------------------------/
frank26080115	0:bf7b9fba3924	74	uint32_t ADC_getCnv (void) {
frank26080115	0:bf7b9fba3924	75	uint32_t adGdr;
frank26080115	0:bf7b9fba3924	76
frank26080115	0:bf7b9fba3924	77	while (!(LPC_ADC->ADGDR & (1UL<<31))); /* Wait for Conversion end */
frank26080115	0:bf7b9fba3924	78	adGdr = LPC_ADC->ADGDR;
frank26080115	0:bf7b9fba3924	79	return((adGdr >> 4) & ADC_VALUE_MAX); /* read converted value */
frank26080115	0:bf7b9fba3924	80	}

Repository toolbox

Export to desktop IDE

Build repository

Repository details

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

EMAC/Easy_Web/ADC.c@0:bf7b9fba3924, 2011-03-20 (annotated)

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning