Frank 26080115
These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
PWR/NMI_PowerDown/nmi_powerdown.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 nmi_powerdown.c |
| frank26080115 | 0:bf7b9fba3924 | 3 | * @purpose This example describes how to enter the system in Power |
| frank26080115 | 0:bf7b9fba3924 | 4 | * Down mode and wake-up by using NMI (Non-maskable Interrupt) |
| frank26080115 | 0:bf7b9fba3924 | 5 | * @version 1.0 |
| frank26080115 | 0:bf7b9fba3924 | 6 | * @date 18. June. 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.h" |
| frank26080115 | 0:bf7b9fba3924 | 21 | #include "lpc17xx_clkpwr.h" |
| frank26080115 | 0:bf7b9fba3924 | 22 | #include "lpc17xx_libcfg.h" |
| frank26080115 | 0:bf7b9fba3924 | 23 | #include "debug_frmwrk.h" |
| frank26080115 | 0:bf7b9fba3924 | 24 | #include "lpc17xx_gpio.h" |
| frank26080115 | 0:bf7b9fba3924 | 25 | #include "lpc17xx_pinsel.h" |
| frank26080115 | 0:bf7b9fba3924 | 26 | |
| frank26080115 | 0:bf7b9fba3924 | 27 | /* Example group ----------------------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 28 | /** @defgroup PWR_NMI_PowerDown NMI_PowerDown |
| frank26080115 | 0:bf7b9fba3924 | 29 | * @ingroup PWR_Examples |
| frank26080115 | 0:bf7b9fba3924 | 30 | * @{ |
| frank26080115 | 0:bf7b9fba3924 | 31 | */ |
| frank26080115 | 0:bf7b9fba3924 | 32 | |
| frank26080115 | 0:bf7b9fba3924 | 33 | /************************** PRIVATE VARIABLES *************************/ |
| frank26080115 | 0:bf7b9fba3924 | 34 | uint8_t menu[]= |
| frank26080115 | 0:bf7b9fba3924 | 35 | "********************************************************************************\n\r" |
| frank26080115 | 0:bf7b9fba3924 | 36 | "Hello NXP Semiconductors \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 37 | "Power control demo \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 38 | "\t - MCU: LPC17xx \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 39 | "\t - Core: ARM CORTEX-M3 \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 40 | "\t - Communicate via: UART0 - 115200 bps \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 41 | "This example used to enter system in PowerDown mode and wake up it by using \n\r " |
| frank26080115 | 0:bf7b9fba3924 | 42 | "NMI (Non-Maskable Interrupt) \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 43 | "********************************************************************************\n\r"; |
| frank26080115 | 0:bf7b9fba3924 | 44 | void print_menu(void); |
| frank26080115 | 0:bf7b9fba3924 | 45 | void NMI_Handler(void); |
| frank26080115 | 0:bf7b9fba3924 | 46 | |
| frank26080115 | 0:bf7b9fba3924 | 47 | |
| frank26080115 | 0:bf7b9fba3924 | 48 | /*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 49 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 50 | * @brief Non-Maskable interrupt handler |
| frank26080115 | 0:bf7b9fba3924 | 51 | * @param[in] none |
| frank26080115 | 0:bf7b9fba3924 | 52 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 53 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 54 | void NMI_Handler(void) |
| frank26080115 | 0:bf7b9fba3924 | 55 | { |
| frank26080115 | 0:bf7b9fba3924 | 56 | //do nothing |
| frank26080115 | 0:bf7b9fba3924 | 57 | } |
| frank26080115 | 0:bf7b9fba3924 | 58 | |
| frank26080115 | 0:bf7b9fba3924 | 59 | /*-------------------------PRIVATE FUNCTIONS------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 60 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 61 | * @brief Print Welcome menu |
| frank26080115 | 0:bf7b9fba3924 | 62 | * @param[in] none |
| frank26080115 | 0:bf7b9fba3924 | 63 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 64 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 65 | void print_menu(void) |
| frank26080115 | 0:bf7b9fba3924 | 66 | { |
| frank26080115 | 0:bf7b9fba3924 | 67 | _DBG(menu); |
| frank26080115 | 0:bf7b9fba3924 | 68 | } |
| frank26080115 | 0:bf7b9fba3924 | 69 | |
| frank26080115 | 0:bf7b9fba3924 | 70 | /*-------------------------MAIN FUNCTION------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 71 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 72 | * @brief c_entry: Main program body |
| frank26080115 | 0:bf7b9fba3924 | 73 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 74 | * @return int |
| frank26080115 | 0:bf7b9fba3924 | 75 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 76 | int c_entry (void) |
| frank26080115 | 0:bf7b9fba3924 | 77 | { |
| frank26080115 | 0:bf7b9fba3924 | 78 | PINSEL_CFG_Type PinCfg; |
| frank26080115 | 0:bf7b9fba3924 | 79 | /* Initialize debug via UART0 |
| frank26080115 | 0:bf7b9fba3924 | 80 | * 115200bps |
| frank26080115 | 0:bf7b9fba3924 | 81 | * 8 data bit |
| frank26080115 | 0:bf7b9fba3924 | 82 | * No parity |
| frank26080115 | 0:bf7b9fba3924 | 83 | * 1 stop bit |
| frank26080115 | 0:bf7b9fba3924 | 84 | * No flow control |
| frank26080115 | 0:bf7b9fba3924 | 85 | */ |
| frank26080115 | 0:bf7b9fba3924 | 86 | debug_frmwrk_init(); |
| frank26080115 | 0:bf7b9fba3924 | 87 | |
| frank26080115 | 0:bf7b9fba3924 | 88 | // print welcome screen |
| frank26080115 | 0:bf7b9fba3924 | 89 | print_menu(); |
| frank26080115 | 0:bf7b9fba3924 | 90 | |
| frank26080115 | 0:bf7b9fba3924 | 91 | /* Pin selection: |
| frank26080115 | 0:bf7b9fba3924 | 92 | * P2.10 as NMI |
| frank26080115 | 0:bf7b9fba3924 | 93 | */ |
| frank26080115 | 0:bf7b9fba3924 | 94 | PinCfg.Funcnum = 2; |
| frank26080115 | 0:bf7b9fba3924 | 95 | PinCfg.OpenDrain = 0; |
| frank26080115 | 0:bf7b9fba3924 | 96 | PinCfg.Pinmode = 0; |
| frank26080115 | 0:bf7b9fba3924 | 97 | PinCfg.Portnum = 2; |
| frank26080115 | 0:bf7b9fba3924 | 98 | PinCfg.Pinnum = 10; |
| frank26080115 | 0:bf7b9fba3924 | 99 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 100 | |
| frank26080115 | 0:bf7b9fba3924 | 101 | SCB->ICSR |=(1<<31); //changes NMI exception state to pending |
| frank26080115 | 0:bf7b9fba3924 | 102 | |
| frank26080115 | 0:bf7b9fba3924 | 103 | _DBG_("Press '1' to enter system in PowerDown mode"); |
| frank26080115 | 0:bf7b9fba3924 | 104 | while(_DG !='1'); |
| frank26080115 | 0:bf7b9fba3924 | 105 | |
| frank26080115 | 0:bf7b9fba3924 | 106 | _DBG_("Enter PowerDown mode..."); |
| frank26080115 | 0:bf7b9fba3924 | 107 | _DBG_("Press INT0 button to wake-up system"); |
| frank26080115 | 0:bf7b9fba3924 | 108 | |
| frank26080115 | 0:bf7b9fba3924 | 109 | // Enter target power down mode |
| frank26080115 | 0:bf7b9fba3924 | 110 | |
| frank26080115 | 0:bf7b9fba3924 | 111 | /*---------- Disable and disconnect the main PLL0 before enter into Deep-Sleep |
| frank26080115 | 0:bf7b9fba3924 | 112 | * or Power-Down mode <according to errata.lpc1768-16.March.2010> ------------ |
| frank26080115 | 0:bf7b9fba3924 | 113 | */ |
| frank26080115 | 0:bf7b9fba3924 | 114 | LPC_SC->PLL0CON &= ~(1<<1); /* Disconnect the main PLL (PLL0) */ |
| frank26080115 | 0:bf7b9fba3924 | 115 | LPC_SC->PLL0FEED = 0xAA; /* Feed */ |
| frank26080115 | 0:bf7b9fba3924 | 116 | LPC_SC->PLL0FEED = 0x55; /* Feed */ |
| frank26080115 | 0:bf7b9fba3924 | 117 | while ((LPC_SC->PLL0STAT & (1<<25)) != 0x00); /* Wait for main PLL (PLL0) to disconnect */ |
| frank26080115 | 0:bf7b9fba3924 | 118 | LPC_SC->PLL0CON &= ~(1<<0); /* Turn off the main PLL (PLL0) */ |
| frank26080115 | 0:bf7b9fba3924 | 119 | LPC_SC->PLL0FEED = 0xAA; /* Feed */ |
| frank26080115 | 0:bf7b9fba3924 | 120 | LPC_SC->PLL0FEED = 0x55; /* Feed */ |
| frank26080115 | 0:bf7b9fba3924 | 121 | while ((LPC_SC->PLL0STAT & (1<<24)) != 0x00); /* Wait for main PLL (PLL0) to shut down */ |
| frank26080115 | 0:bf7b9fba3924 | 122 | /*------------Then enter into PowerDown mode ----------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 123 | |
| frank26080115 | 0:bf7b9fba3924 | 124 | CLKPWR_PowerDown(); |
| frank26080115 | 0:bf7b9fba3924 | 125 | SystemInit(); |
| frank26080115 | 0:bf7b9fba3924 | 126 | debug_frmwrk_init(); |
| frank26080115 | 0:bf7b9fba3924 | 127 | _DBG_("\n\rSystem waked-up!"); |
| frank26080115 | 0:bf7b9fba3924 | 128 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 129 | return 1; |
| frank26080115 | 0:bf7b9fba3924 | 130 | } |
| frank26080115 | 0:bf7b9fba3924 | 131 | |
| frank26080115 | 0:bf7b9fba3924 | 132 | |
| frank26080115 | 0:bf7b9fba3924 | 133 | /* With ARM and GHS toolsets, the entry point is main() - this will |
| frank26080115 | 0:bf7b9fba3924 | 134 | allow the linker to generate wrapper code to setup stacks, allocate |
| frank26080115 | 0:bf7b9fba3924 | 135 | heap area, and initialize and copy code and data segments. For GNU |
| frank26080115 | 0:bf7b9fba3924 | 136 | toolsets, the entry point is through __start() in the crt0_gnu.asm |
| frank26080115 | 0:bf7b9fba3924 | 137 | file, and that startup code will setup stacks and data */ |
| frank26080115 | 0:bf7b9fba3924 | 138 | int main(void) |
| frank26080115 | 0:bf7b9fba3924 | 139 | { |
| frank26080115 | 0:bf7b9fba3924 | 140 | return c_entry(); |
| frank26080115 | 0:bf7b9fba3924 | 141 | } |
| frank26080115 | 0:bf7b9fba3924 | 142 | |
| frank26080115 | 0:bf7b9fba3924 | 143 | #ifdef DEBUG |
| frank26080115 | 0:bf7b9fba3924 | 144 | /******************************************************************************* |
| frank26080115 | 0:bf7b9fba3924 | 145 | * @brief Reports the name of the source file and the source line number |
| frank26080115 | 0:bf7b9fba3924 | 146 | * where the CHECK_PARAM error has occurred. |
| frank26080115 | 0:bf7b9fba3924 | 147 | * @param[in] file Pointer to the source file name |
| frank26080115 | 0:bf7b9fba3924 | 148 | * @param[in] line assert_param error line source number |
| frank26080115 | 0:bf7b9fba3924 | 149 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 150 | *******************************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 151 | void check_failed(uint8_t *file, uint32_t line) |
| frank26080115 | 0:bf7b9fba3924 | 152 | { |
| frank26080115 | 0:bf7b9fba3924 | 153 | /* User can add his own implementation to report the file name and line number, |
| frank26080115 | 0:bf7b9fba3924 | 154 | ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
| frank26080115 | 0:bf7b9fba3924 | 155 | |
| frank26080115 | 0:bf7b9fba3924 | 156 | /* Infinite loop */ |
| frank26080115 | 0:bf7b9fba3924 | 157 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 158 | } |
| frank26080115 | 0:bf7b9fba3924 | 159 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 160 | |
| frank26080115 | 0:bf7b9fba3924 | 161 | /* |
| frank26080115 | 0:bf7b9fba3924 | 162 | * @} |
| frank26080115 | 0:bf7b9fba3924 | 163 | */ |