These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
Diff: ADC/HardwareTrigger/adc_hardware_trigger_test.c
- Revision:
- 0:bf7b9fba3924
diff -r 000000000000 -r bf7b9fba3924 ADC/HardwareTrigger/adc_hardware_trigger_test.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ADC/HardwareTrigger/adc_hardware_trigger_test.c Sun Mar 20 05:38:56 2011 +0000 @@ -0,0 +1,188 @@ +/*** + * @file adc_hardware_trigger_test.c + * @purpose This example describes how to use ADC conversion in + * interrupt mode + * @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 "lpc17xx_adc.h" +#include "lpc17xx_libcfg.h" +#include "lpc17xx_pinsel.h" +#include "debug_frmwrk.h" + +/* Example group ----------------------------------------------------------- */ +/** @defgroup ADC_HardwareTrigger HardwareTrigger + * @ingroup ADC_Examples + * @{ + */ + +/************************** PRIVATE DEFINITIONS ***********************/ +#define _ADC_INT ADC_ADINTEN2 +#define _ADC_CHANNEL ADC_CHANNEL_2 + +/************************** PRIVATE VARIABLES *************************/ +uint8_t menu1[] = +"********************************************************************************\n\r" +"Hello NXP Semiconductors \n\r" +" ADC 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, read in hardware-triggred mode\n\r" +" Press INT0 button to start ADC conversion, ADC interrupt when conversion completed\n\r" +" ADC channel value is read back and displayed via UART0\n\r" +" Turn the potentiometer to see how ADC value changes\n\r" +"********************************************************************************\n\r"; + +uint32_t adc_value; + +/************************** PRIVATE FUNCTION *************************/ +void ADC_IRQHandler(void); + +void print_menu(void); + +/*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/ +/*********************************************************************//** + * @brief ADC interrupt handler sub-routine + * @param[in] None + * @return None + **********************************************************************/ +void ADC_IRQHandler(void) +{ + adc_value = 0; + if (ADC_ChannelGetStatus(LPC_ADC,ADC_CHANNEL_2,ADC_DATA_DONE)) + { + adc_value = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_2); + NVIC_DisableIRQ(ADC_IRQn); + } +} + +/*-------------------------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; + + /* Initialize debug via UART0 + * 115200bps + * 8 data bit + * No parity + * 1 stop bit + * No flow control + */ + debug_frmwrk_init(); + + // print welcome screen + print_menu(); + + /* + * 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); + + /* + * Init P2.10 + * + */ + PinCfg.Funcnum = 1; //EINT0 + PinCfg.OpenDrain = 0; + PinCfg.Pinmode = 0; + PinCfg.Pinnum = 10; + PinCfg.Portnum = 2; + PINSEL_ConfigPin(&PinCfg); + + /* 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_IntConfig(LPC_ADC,_ADC_INT,ENABLE); + ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL,ENABLE); + ADC_EdgeStartConfig(LPC_ADC,ADC_START_ON_FALLING); + + /* preemption = 1, sub-priority = 1 */ + NVIC_SetPriority(ADC_IRQn, ((0x01<<3)|0x01)); + + while(1) + { + adc_value = 0; + + // Start conversion on EINT0 falling edge + ADC_StartCmd(LPC_ADC,ADC_START_ON_EINT0); + + /* Enable ADC in NVIC */ + NVIC_EnableIRQ(ADC_IRQn); + + _DBG("Press INT0 button to start ADC conversion on AD0.2...");_DBG_(""); + while(adc_value==0); + + //Display the result of conversion on the UART0 + _DBG("ADC value on channel 2: "); + + _DBD32(adc_value); + _DBG_(""); + } + 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 +/* + * @} + */