Frank 26080115
These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
ADC/INTERRUPT/adc_interrupt_test.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 | * @file adc_interrupt_test.c |
| frank26080115 | 0:bf7b9fba3924 | 3 | * @purpose This example describes how to use ADC conversion in |
| frank26080115 | 0:bf7b9fba3924 | 4 | * interrupt mode |
| frank26080115 | 0:bf7b9fba3924 | 5 | * @version 2.0 |
| frank26080115 | 0:bf7b9fba3924 | 6 | * @date 21. May. 2010 |
| frank26080115 | 0:bf7b9fba3924 | 7 | * @author NXP MCU SW Application Team |
| frank26080115 | 0:bf7b9fba3924 | 8 | *--------------------------------------------------------------------- |
| frank26080115 | 0:bf7b9fba3924 | 9 | * Software that is described herein is for illustrative purposes only |
| frank26080115 | 0:bf7b9fba3924 | 10 | * which provides customers with programming information regarding the |
| frank26080115 | 0:bf7b9fba3924 | 11 | * products. This software is supplied "AS IS" without any warranties. |
| frank26080115 | 0:bf7b9fba3924 | 12 | * NXP Semiconductors assumes no responsibility or liability for the |
| frank26080115 | 0:bf7b9fba3924 | 13 | * use of the software, conveys no license or title under any patent, |
| frank26080115 | 0:bf7b9fba3924 | 14 | * copyright, or mask work right to the product. NXP Semiconductors |
| frank26080115 | 0:bf7b9fba3924 | 15 | * reserves the right to make changes in the software without |
| frank26080115 | 0:bf7b9fba3924 | 16 | * notification. NXP Semiconductors also make no representation or |
| frank26080115 | 0:bf7b9fba3924 | 17 | * warranty that such application will be suitable for the specified |
| frank26080115 | 0:bf7b9fba3924 | 18 | * use without further testing or modification. |
| frank26080115 | 0:bf7b9fba3924 | 19 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 20 | #include "lpc17xx_adc.h" |
| frank26080115 | 0:bf7b9fba3924 | 21 | #include "lpc17xx_libcfg.h" |
| frank26080115 | 0:bf7b9fba3924 | 22 | #include "lpc17xx_pinsel.h" |
| frank26080115 | 0:bf7b9fba3924 | 23 | #include "debug_frmwrk.h" |
| frank26080115 | 0:bf7b9fba3924 | 24 | |
| frank26080115 | 0:bf7b9fba3924 | 25 | /* Example group ----------------------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 26 | /** @defgroup ADC_INTERRUPT INTERRUPT |
| frank26080115 | 0:bf7b9fba3924 | 27 | * @ingroup ADC_Examples |
| frank26080115 | 0:bf7b9fba3924 | 28 | * @{ |
| frank26080115 | 0:bf7b9fba3924 | 29 | */ |
| frank26080115 | 0:bf7b9fba3924 | 30 | |
| frank26080115 | 0:bf7b9fba3924 | 31 | /************************** PRIVATE DEFINITIONS ***********************/ |
| frank26080115 | 0:bf7b9fba3924 | 32 | #define MCB_LPC_1768 |
| frank26080115 | 0:bf7b9fba3924 | 33 | //#define IAR_LPC_1768 |
| frank26080115 | 0:bf7b9fba3924 | 34 | |
| frank26080115 | 0:bf7b9fba3924 | 35 | #ifdef MCB_LPC_1768 |
| frank26080115 | 0:bf7b9fba3924 | 36 | #define _ADC_INT ADC_ADINTEN2 |
| frank26080115 | 0:bf7b9fba3924 | 37 | #define _ADC_CHANNEL ADC_CHANNEL_2 |
| frank26080115 | 0:bf7b9fba3924 | 38 | #elif defined(IAR_LPC_1768) |
| frank26080115 | 0:bf7b9fba3924 | 39 | #define _ADC_INT ADC_ADINTEN5 |
| frank26080115 | 0:bf7b9fba3924 | 40 | #define _ADC_CHANNEL ADC_CHANNEL_5 |
| frank26080115 | 0:bf7b9fba3924 | 41 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 42 | |
| frank26080115 | 0:bf7b9fba3924 | 43 | /************************** PRIVATE VARIABLES *************************/ |
| frank26080115 | 0:bf7b9fba3924 | 44 | uint8_t menu1[] = |
| frank26080115 | 0:bf7b9fba3924 | 45 | "********************************************************************************\n\r" |
| frank26080115 | 0:bf7b9fba3924 | 46 | "Hello NXP Semiconductors \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 47 | " ADC demo \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 48 | "\t - MCU: LPC17xx \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 49 | "\t - Core: ARM CORTEX-M3 \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 50 | "\t - Communicate via: UART0 - 115200 bps \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 51 | " Use ADC with 12-bit resolution rate of 200KHz, read in interrupt mode\n\r" |
| frank26080115 | 0:bf7b9fba3924 | 52 | " To get ADC channel value and display via UART0\n\r" |
| frank26080115 | 0:bf7b9fba3924 | 53 | " Turn the potentiometer to see how ADC value changes\n\r" |
| frank26080115 | 0:bf7b9fba3924 | 54 | "********************************************************************************\n\r"; |
| frank26080115 | 0:bf7b9fba3924 | 55 | |
| frank26080115 | 0:bf7b9fba3924 | 56 | uint32_t adc_value; |
| frank26080115 | 0:bf7b9fba3924 | 57 | |
| frank26080115 | 0:bf7b9fba3924 | 58 | /************************** PRIVATE FUNCTION *************************/ |
| frank26080115 | 0:bf7b9fba3924 | 59 | void ADC_IRQHandler(void); |
| frank26080115 | 0:bf7b9fba3924 | 60 | |
| frank26080115 | 0:bf7b9fba3924 | 61 | void print_menu(void); |
| frank26080115 | 0:bf7b9fba3924 | 62 | |
| frank26080115 | 0:bf7b9fba3924 | 63 | /*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 64 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 65 | * @brief ADC interrupt handler sub-routine |
| frank26080115 | 0:bf7b9fba3924 | 66 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 67 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 68 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 69 | void ADC_IRQHandler(void) |
| frank26080115 | 0:bf7b9fba3924 | 70 | { |
| frank26080115 | 0:bf7b9fba3924 | 71 | adc_value = 0; |
| frank26080115 | 0:bf7b9fba3924 | 72 | #ifdef MCB_LPC_1768 |
| frank26080115 | 0:bf7b9fba3924 | 73 | if (ADC_ChannelGetStatus(LPC_ADC,ADC_CHANNEL_2,ADC_DATA_DONE)) |
| frank26080115 | 0:bf7b9fba3924 | 74 | { |
| frank26080115 | 0:bf7b9fba3924 | 75 | adc_value = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_2); |
| frank26080115 | 0:bf7b9fba3924 | 76 | NVIC_DisableIRQ(ADC_IRQn); |
| frank26080115 | 0:bf7b9fba3924 | 77 | } |
| frank26080115 | 0:bf7b9fba3924 | 78 | #elif defined(IAR_LPC_1768) |
| frank26080115 | 0:bf7b9fba3924 | 79 | if (ADC_ChannelGetStatus(LPC_ADC,ADC_CHANNEL_5,ADC_DATA_DONE)) |
| frank26080115 | 0:bf7b9fba3924 | 80 | { |
| frank26080115 | 0:bf7b9fba3924 | 81 | adc_value = ADC_ChannelGetData(LPC_ADC,ADC_CHANNEL_5); |
| frank26080115 | 0:bf7b9fba3924 | 82 | NVIC_DisableIRQ(ADC_IRQn); |
| frank26080115 | 0:bf7b9fba3924 | 83 | } |
| frank26080115 | 0:bf7b9fba3924 | 84 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 85 | } |
| frank26080115 | 0:bf7b9fba3924 | 86 | |
| frank26080115 | 0:bf7b9fba3924 | 87 | /*-------------------------PRIVATE FUNCTIONS------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 88 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 89 | * @brief Print menu |
| frank26080115 | 0:bf7b9fba3924 | 90 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 91 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 92 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 93 | void print_menu(void) |
| frank26080115 | 0:bf7b9fba3924 | 94 | { |
| frank26080115 | 0:bf7b9fba3924 | 95 | _DBG(menu1); |
| frank26080115 | 0:bf7b9fba3924 | 96 | } |
| frank26080115 | 0:bf7b9fba3924 | 97 | |
| frank26080115 | 0:bf7b9fba3924 | 98 | |
| frank26080115 | 0:bf7b9fba3924 | 99 | /*-------------------------MAIN FUNCTION------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 100 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 101 | * @brief c_entry: Main ADC program body |
| frank26080115 | 0:bf7b9fba3924 | 102 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 103 | * @return int |
| frank26080115 | 0:bf7b9fba3924 | 104 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 105 | int c_entry(void) |
| frank26080115 | 0:bf7b9fba3924 | 106 | { |
| frank26080115 | 0:bf7b9fba3924 | 107 | PINSEL_CFG_Type PinCfg; |
| frank26080115 | 0:bf7b9fba3924 | 108 | uint32_t tmp; |
| frank26080115 | 0:bf7b9fba3924 | 109 | |
| frank26080115 | 0:bf7b9fba3924 | 110 | /* Initialize debug via UART0 |
| frank26080115 | 0:bf7b9fba3924 | 111 | * 115200bps |
| frank26080115 | 0:bf7b9fba3924 | 112 | * 8 data bit |
| frank26080115 | 0:bf7b9fba3924 | 113 | * No parity |
| frank26080115 | 0:bf7b9fba3924 | 114 | * 1 stop bit |
| frank26080115 | 0:bf7b9fba3924 | 115 | * No flow control |
| frank26080115 | 0:bf7b9fba3924 | 116 | */ |
| frank26080115 | 0:bf7b9fba3924 | 117 | debug_frmwrk_init(); |
| frank26080115 | 0:bf7b9fba3924 | 118 | |
| frank26080115 | 0:bf7b9fba3924 | 119 | // print welcome screen |
| frank26080115 | 0:bf7b9fba3924 | 120 | print_menu(); |
| frank26080115 | 0:bf7b9fba3924 | 121 | |
| frank26080115 | 0:bf7b9fba3924 | 122 | /* Because the potentiometer on different boards (MCB & IAR) connect |
| frank26080115 | 0:bf7b9fba3924 | 123 | * with different ADC channel, so we have to configure correct ADC channel |
| frank26080115 | 0:bf7b9fba3924 | 124 | * on each board respectively. |
| frank26080115 | 0:bf7b9fba3924 | 125 | * If you want to check other ADC channels, you have to wire this ADC pin directly |
| frank26080115 | 0:bf7b9fba3924 | 126 | * to potentiometer pin (please see schematic doc for more reference) |
| frank26080115 | 0:bf7b9fba3924 | 127 | */ |
| frank26080115 | 0:bf7b9fba3924 | 128 | #ifdef MCB_LPC_1768 |
| frank26080115 | 0:bf7b9fba3924 | 129 | /* |
| frank26080115 | 0:bf7b9fba3924 | 130 | * Init ADC pin connect |
| frank26080115 | 0:bf7b9fba3924 | 131 | * AD0.2 on P0.25 |
| frank26080115 | 0:bf7b9fba3924 | 132 | */ |
| frank26080115 | 0:bf7b9fba3924 | 133 | PinCfg.Funcnum = 1; |
| frank26080115 | 0:bf7b9fba3924 | 134 | PinCfg.OpenDrain = 0; |
| frank26080115 | 0:bf7b9fba3924 | 135 | PinCfg.Pinmode = 0; |
| frank26080115 | 0:bf7b9fba3924 | 136 | PinCfg.Pinnum = 25; |
| frank26080115 | 0:bf7b9fba3924 | 137 | PinCfg.Portnum = 0; |
| frank26080115 | 0:bf7b9fba3924 | 138 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 139 | #elif defined (IAR_LPC_1768) |
| frank26080115 | 0:bf7b9fba3924 | 140 | /* select P1.31 as AD0.5 */ |
| frank26080115 | 0:bf7b9fba3924 | 141 | PinCfg.Funcnum = 3; |
| frank26080115 | 0:bf7b9fba3924 | 142 | PinCfg.OpenDrain = 0; |
| frank26080115 | 0:bf7b9fba3924 | 143 | PinCfg.Pinmode = 0; |
| frank26080115 | 0:bf7b9fba3924 | 144 | PinCfg.Pinnum = 31; |
| frank26080115 | 0:bf7b9fba3924 | 145 | PinCfg.Portnum = 1; |
| frank26080115 | 0:bf7b9fba3924 | 146 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 147 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 148 | |
| frank26080115 | 0:bf7b9fba3924 | 149 | |
| frank26080115 | 0:bf7b9fba3924 | 150 | /* Configuration for ADC: |
| frank26080115 | 0:bf7b9fba3924 | 151 | * select: ADC channel 2 (if using MCB1700 board) |
| frank26080115 | 0:bf7b9fba3924 | 152 | * ADC channel 5 (if using IAR-LPC1768 board) |
| frank26080115 | 0:bf7b9fba3924 | 153 | * ADC conversion rate = 200KHz |
| frank26080115 | 0:bf7b9fba3924 | 154 | */ |
| frank26080115 | 0:bf7b9fba3924 | 155 | ADC_Init(LPC_ADC, 200000); |
| frank26080115 | 0:bf7b9fba3924 | 156 | ADC_IntConfig(LPC_ADC,_ADC_INT,ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 157 | ADC_ChannelCmd(LPC_ADC,_ADC_CHANNEL,ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 158 | |
| frank26080115 | 0:bf7b9fba3924 | 159 | /* preemption = 1, sub-priority = 1 */ |
| frank26080115 | 0:bf7b9fba3924 | 160 | NVIC_SetPriority(ADC_IRQn, ((0x01<<3)|0x01)); |
| frank26080115 | 0:bf7b9fba3924 | 161 | |
| frank26080115 | 0:bf7b9fba3924 | 162 | while(1) |
| frank26080115 | 0:bf7b9fba3924 | 163 | { |
| frank26080115 | 0:bf7b9fba3924 | 164 | // Start conversion |
| frank26080115 | 0:bf7b9fba3924 | 165 | ADC_StartCmd(LPC_ADC,ADC_START_NOW); |
| frank26080115 | 0:bf7b9fba3924 | 166 | |
| frank26080115 | 0:bf7b9fba3924 | 167 | /* Enable ADC in NVIC */ |
| frank26080115 | 0:bf7b9fba3924 | 168 | NVIC_EnableIRQ(ADC_IRQn); |
| frank26080115 | 0:bf7b9fba3924 | 169 | |
| frank26080115 | 0:bf7b9fba3924 | 170 | //Display the result of conversion on the UART0 |
| frank26080115 | 0:bf7b9fba3924 | 171 | #ifdef MCB_LPC_1768 |
| frank26080115 | 0:bf7b9fba3924 | 172 | _DBG("ADC value on channel 2: "); |
| frank26080115 | 0:bf7b9fba3924 | 173 | #elif defined (IAR_LPC_1768) |
| frank26080115 | 0:bf7b9fba3924 | 174 | _DBG("ADC value on channel 5: "); |
| frank26080115 | 0:bf7b9fba3924 | 175 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 176 | _DBD32(adc_value); |
| frank26080115 | 0:bf7b9fba3924 | 177 | _DBG_(""); |
| frank26080115 | 0:bf7b9fba3924 | 178 | for(tmp = 0; tmp < 1000000; tmp++); |
| frank26080115 | 0:bf7b9fba3924 | 179 | } |
| frank26080115 | 0:bf7b9fba3924 | 180 | ADC_DeInit(LPC_ADC); |
| frank26080115 | 0:bf7b9fba3924 | 181 | return (0); |
| frank26080115 | 0:bf7b9fba3924 | 182 | } |
| frank26080115 | 0:bf7b9fba3924 | 183 | |
| frank26080115 | 0:bf7b9fba3924 | 184 | /* Support required entry point for other toolchain */ |
| frank26080115 | 0:bf7b9fba3924 | 185 | int main (void) |
| frank26080115 | 0:bf7b9fba3924 | 186 | { |
| frank26080115 | 0:bf7b9fba3924 | 187 | return c_entry(); |
| frank26080115 | 0:bf7b9fba3924 | 188 | } |
| frank26080115 | 0:bf7b9fba3924 | 189 | #ifdef DEBUG |
| frank26080115 | 0:bf7b9fba3924 | 190 | /******************************************************************************* |
| frank26080115 | 0:bf7b9fba3924 | 191 | * @brief Reports the name of the source file and the source line number |
| frank26080115 | 0:bf7b9fba3924 | 192 | * where the CHECK_PARAM error has occurred. |
| frank26080115 | 0:bf7b9fba3924 | 193 | * @param[in] file Pointer to the source file name |
| frank26080115 | 0:bf7b9fba3924 | 194 | * @param[in] line assert_param error line source number |
| frank26080115 | 0:bf7b9fba3924 | 195 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 196 | *******************************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 197 | void check_failed(uint8_t *file, uint32_t line) |
| frank26080115 | 0:bf7b9fba3924 | 198 | { |
| frank26080115 | 0:bf7b9fba3924 | 199 | /* User can add his own implementation to report the file name and line number, |
| frank26080115 | 0:bf7b9fba3924 | 200 | ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
| frank26080115 | 0:bf7b9fba3924 | 201 | |
| frank26080115 | 0:bf7b9fba3924 | 202 | /* Infinite loop */ |
| frank26080115 | 0:bf7b9fba3924 | 203 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 204 | } |
| frank26080115 | 0:bf7b9fba3924 | 205 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 206 | |
| frank26080115 | 0:bf7b9fba3924 | 207 | /* |
| frank26080115 | 0:bf7b9fba3924 | 208 | * @} |
| frank26080115 | 0:bf7b9fba3924 | 209 | */ |