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
Who changed what in which revision?
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 | */ |