Diff: ADC/Burst/adc_burst_test.c

Revision:

0:bf7b9fba3924

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ADC/Burst/adc_burst_test.c	Sun Mar 20 05:38:56 2011 +0000
@@ -0,0 +1,256 @@
+/******************** (C) COPYRIGHT 2010 NXPSemiconductors ************
+ * @file		adc_interrupt_test.c
+ * @purpose		This example describes how to use ADC conversion in
+ * 			  	burst mode
+ * @version		2.0
+ * @date		16. July. 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 "lpc17xx_adc.h"
+#include "lpc17xx_libcfg.h"
+#include "lpc17xx_pinsel.h"
+#include "debug_frmwrk.h"
+#include "lpc17xx_gpio.h"
+
+/* Example group ----------------------------------------------------------- */
+/** @defgroup ADC_Burst		Burst
+ * @ingroup ADC_Examples
+ * @{
+ */
+
+/************************** PRIVATE DEFINITIONS ***********************/
+#define MCB_LPC_1768
+//#define IAR_LPC_1768
+#define MCB_LPC17XX_ADC_INJECT_TEST
+
+#ifdef MCB_LPC_1768
+#define MCB_LPC_1768_ADC_BURST_MULTI
+#endif
+
+#ifdef MCB_LPC_1768
+#define _ADC_INT			ADC_ADINTEN2
+#define _ADC_CHANNEL		ADC_CHANNEL_2
+
+#ifdef MCB_LPC_1768_ADC_BURST_MULTI
+#define _ADC_INT_3			ADC_ADINTEN3
+#define _ADC_CHANNEL_3		ADC_CHANNEL_3
+#endif
+
+#elif defined(IAR_LPC_1768)
+#define _ADC_INT			ADC_ADINTEN5
+#define _ADC_CHANNEL		ADC_CHANNEL_5
+#endif
+
+/** DMA size of transfer */
+#define DMA_SIZE		8
+
+#ifdef MCB_LPC17XX_ADC_INJECT_TEST
+#define GPIO_INT	(1<<10)
+#define POLL_LED	(1<<4)		// P1.28
+#endif
+/************************** PRIVATE VARIABLES *************************/
+uint8_t menu1[] =
+"********************************************************************************\n\r"
+"Hello NXP Semiconductors \n\r"
+" ADC burst demo \n\r"
+"\t - MCU: LPC17xx \n\r"
+"\t - Core: ARM CORTEX-M3 \n\r"
+"\t - Communicate via: UART0 - 115200 bps \n\r"
+" Use ADC with 12-bit resolution rate of 200KHz, running burst mode (single or multiple input)\n\r"
+" Display ADC value via UART0\n\r"
+" Turn the potentiometer to see how ADC value changes\n\r"
+"********************************************************************************\n\r";
+
+#ifdef MCB_LPC17XX_ADC_INJECT_TEST
+static BOOL_8 toggle=FALSE;
+#endif
+/************************** PRIVATE FUNCTION *************************/
+void print_menu(void);
+
+#ifdef MCB_LPC17XX_ADC_INJECT_TEST
+void EINT3_IRQHandler(void);
+#endif
+
+/*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/
+#ifdef MCB_LPC17XX_ADC_INJECT_TEST
+void EINT3_IRQHandler(void)
+{
+	  if (GPIO_GetIntStatus(1, 10, 1))
+	  {
+		  GPIO_ClearInt(2,(1<<10));
+		  toggle=~toggle;
+#ifdef MCB_LPC_1768_ADC_BURST_MULTI
+		  if(toggle)
+		  {
+			  ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL_3,ENABLE);
+			  FIO_ByteSetValue(1, 3, POLL_LED);
+		  }
+		  else
+		  {
+			  ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL_3,DISABLE);
+			  FIO_ByteClearValue(1, 3, POLL_LED);
+		  }
+#endif
+	  }
+}
+#endif
+/*-------------------------PRIVATE FUNCTIONS------------------------------*/
+/*********************************************************************//**
+ * @brief		Print menu
+ * @param[in]	None
+ * @return 		None
+ **********************************************************************/
+void print_menu(void)
+{
+	_DBG(menu1);
+}
+
+
+/*-------------------------MAIN FUNCTION------------------------------*/
+/*********************************************************************//**
+ * @brief		c_entry: Main ADC program body
+ * @param[in]	None
+ * @return 		int
+ **********************************************************************/
+int c_entry(void)
+{
+	PINSEL_CFG_Type PinCfg;
+#ifdef MCB_LPC_1768_ADC_BURST_MULTI
+	PINSEL_CFG_Type PinCfg1;
+#endif
+	uint32_t tmp;
+	uint32_t adc_value;
+	/* Initialize debug via UART0
+	 * – 115200bps
+	 * – 8 data bit
+	 * – No parity
+	 * – 1 stop bit
+	 * – No flow control
+	 */
+	debug_frmwrk_init();
+
+	// print welcome screen
+	print_menu();
+
+	/* Because the potentiometer on different boards (MCB & IAR) connect
+	 * with different ADC channel, so we have to configure correct ADC channel
+	 * on each board respectively.
+	 * If you want to check other ADC channels, you have to wire this ADC pin directly
+	 * to potentiometer pin (please see schematic doc for more reference)
+	 */
+#ifdef MCB_LPC_1768
+	/*
+	 * Init ADC pin connect
+	 * AD0.2 on P0.25
+	 */
+	PinCfg.Funcnum = 1;
+	PinCfg.OpenDrain = 0;
+	PinCfg.Pinmode = 0;
+	PinCfg.Pinnum = 25;
+	PinCfg.Portnum = 0;
+	PINSEL_ConfigPin(&PinCfg);
+#ifdef MCB_LPC_1768_ADC_BURST_MULTI
+	/*
+	 * Init ADC pin connect
+	 * AD0.3 on P0.26
+	 */
+	PinCfg1.Funcnum = 1;
+	PinCfg1.OpenDrain = 0;
+	PinCfg1.Pinmode = 0;
+	PinCfg1.Pinnum = 26;
+	PinCfg1.Portnum = 0;
+	PINSEL_ConfigPin(&PinCfg1);
+#endif
+#elif defined (IAR_LPC_1768)
+	/* select P1.31 as AD0.5 */
+	PinCfg.Funcnum = 3;
+	PinCfg.OpenDrain = 0;
+	PinCfg.Pinmode = 0;
+	PinCfg.Pinnum = 31;
+	PinCfg.Portnum = 1;
+	PINSEL_ConfigPin(&PinCfg);
+#endif
+
+
+	/* Configuration for ADC:
+	 *  select: ADC channel 2 (if using MCB1700 board)
+	 *  		ADC channel 5 (if using IAR-LPC1768 board)
+	 *  ADC conversion rate = 200KHz
+	 */
+	ADC_Init(LPC_ADC, 200000);
+	ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL,ENABLE);
+#ifdef MCB_LPC_1768_ADC_BURST_MULTI
+	ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL_3,ENABLE);
+#endif
+
+#ifdef MCB_LPC17XX_ADC_INJECT_TEST
+	FIO_ByteSetDir(1, 3, POLL_LED, 1);
+	FIO_ByteClearValue(1, 3, POLL_LED);
+	// Enable GPIO interrupt P2.10
+	GPIO_IntCmd(2,(1<<10),1);
+	NVIC_EnableIRQ(EINT3_IRQn);
+#endif
+
+	//Start burst conversion
+	ADC_BurstCmd(LPC_ADC,ENABLE);
+	while(1)
+	{
+#ifdef MCB_LPC_1768
+		adc_value =  ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_2);
+		_DBG("ADC value on channel 2: ");
+#elif defined (IAR_LPC_1768)
+		adc_value =  ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_5);
+		_DBG("ADC value on channel 5: ");
+#endif
+		_DBD32(adc_value);
+		_DBG_("");
+#ifdef MCB_LPC_1768_ADC_BURST_MULTI
+		adc_value =  ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_3);
+		_DBG("ADC value on channel 3: ");
+		_DBD32(adc_value);
+		_DBG_("");
+#endif
+		// Wait for a while
+		for(tmp = 0; tmp < 1500000; tmp++);
+	}
+	ADC_DeInit(LPC_ADC);
+	return (0);
+}
+
+/* Support required entry point for other toolchain */
+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
+
+/*
+ * @}
+ */