Frank 26080115
These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
PWM/Single_Edge/pwm_single_edge.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 pwm_single_edge.c |
| frank26080115 | 0:bf7b9fba3924 | 3 | * @purpose This program illustrates the PWM signal on 6 Channels |
| frank26080115 | 0:bf7b9fba3924 | 4 | * in single edge 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_pwm.h" |
| frank26080115 | 0:bf7b9fba3924 | 21 | #include "lpc17xx_libcfg.h" |
| frank26080115 | 0:bf7b9fba3924 | 22 | #include "lpc17xx_pinsel.h" |
| frank26080115 | 0:bf7b9fba3924 | 23 | |
| frank26080115 | 0:bf7b9fba3924 | 24 | /* Example group ----------------------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 25 | /** @defgroup PWM_Single_Edge Single_Edge |
| frank26080115 | 0:bf7b9fba3924 | 26 | * @ingroup PWM_Examples |
| frank26080115 | 0:bf7b9fba3924 | 27 | * @{ |
| frank26080115 | 0:bf7b9fba3924 | 28 | */ |
| frank26080115 | 0:bf7b9fba3924 | 29 | |
| frank26080115 | 0:bf7b9fba3924 | 30 | /*-------------------------MAIN FUNCTION------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 31 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 32 | * @brief c_entry: Main PWM program body |
| frank26080115 | 0:bf7b9fba3924 | 33 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 34 | * @return int |
| frank26080115 | 0:bf7b9fba3924 | 35 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 36 | int c_entry(void) |
| frank26080115 | 0:bf7b9fba3924 | 37 | { |
| frank26080115 | 0:bf7b9fba3924 | 38 | uint8_t temp, temp2; |
| frank26080115 | 0:bf7b9fba3924 | 39 | PWM_TIMERCFG_Type PWMCfgDat; |
| frank26080115 | 0:bf7b9fba3924 | 40 | PWM_MATCHCFG_Type PWMMatchCfgDat; |
| frank26080115 | 0:bf7b9fba3924 | 41 | PINSEL_CFG_Type PinCfg; |
| frank26080115 | 0:bf7b9fba3924 | 42 | |
| frank26080115 | 0:bf7b9fba3924 | 43 | /* PWM block section -------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 44 | /* Initialize PWM peripheral, timer mode |
| frank26080115 | 0:bf7b9fba3924 | 45 | * PWM prescale value = 1 (absolute value - tick value) */ |
| frank26080115 | 0:bf7b9fba3924 | 46 | PWMCfgDat.PrescaleOption = PWM_TIMER_PRESCALE_TICKVAL; |
| frank26080115 | 0:bf7b9fba3924 | 47 | PWMCfgDat.PrescaleValue = 1; |
| frank26080115 | 0:bf7b9fba3924 | 48 | PWM_Init(LPC_PWM1, PWM_MODE_TIMER, (void *) &PWMCfgDat); |
| frank26080115 | 0:bf7b9fba3924 | 49 | |
| frank26080115 | 0:bf7b9fba3924 | 50 | /* |
| frank26080115 | 0:bf7b9fba3924 | 51 | * Initialize PWM pin connect |
| frank26080115 | 0:bf7b9fba3924 | 52 | */ |
| frank26080115 | 0:bf7b9fba3924 | 53 | PinCfg.Funcnum = 1; |
| frank26080115 | 0:bf7b9fba3924 | 54 | PinCfg.OpenDrain = 0; |
| frank26080115 | 0:bf7b9fba3924 | 55 | PinCfg.Pinmode = 0; |
| frank26080115 | 0:bf7b9fba3924 | 56 | PinCfg.Portnum = 2; |
| frank26080115 | 0:bf7b9fba3924 | 57 | for (temp = 0; temp <= 6; temp++){ |
| frank26080115 | 0:bf7b9fba3924 | 58 | PinCfg.Pinnum = temp; |
| frank26080115 | 0:bf7b9fba3924 | 59 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 60 | } |
| frank26080115 | 0:bf7b9fba3924 | 61 | |
| frank26080115 | 0:bf7b9fba3924 | 62 | |
| frank26080115 | 0:bf7b9fba3924 | 63 | /* Set match value for PWM match channel 0 = 256, update immediately */ |
| frank26080115 | 0:bf7b9fba3924 | 64 | PWM_MatchUpdate(LPC_PWM1, 0, 256, PWM_MATCH_UPDATE_NOW); |
| frank26080115 | 0:bf7b9fba3924 | 65 | /* PWM Timer/Counter will be reset when channel 0 matching |
| frank26080115 | 0:bf7b9fba3924 | 66 | * no interrupt when match |
| frank26080115 | 0:bf7b9fba3924 | 67 | * no stop when match */ |
| frank26080115 | 0:bf7b9fba3924 | 68 | PWMMatchCfgDat.IntOnMatch = DISABLE; |
| frank26080115 | 0:bf7b9fba3924 | 69 | PWMMatchCfgDat.MatchChannel = 0; |
| frank26080115 | 0:bf7b9fba3924 | 70 | PWMMatchCfgDat.ResetOnMatch = ENABLE; |
| frank26080115 | 0:bf7b9fba3924 | 71 | PWMMatchCfgDat.StopOnMatch = DISABLE; |
| frank26080115 | 0:bf7b9fba3924 | 72 | PWM_ConfigMatch(LPC_PWM1, &PWMMatchCfgDat); |
| frank26080115 | 0:bf7b9fba3924 | 73 | |
| frank26080115 | 0:bf7b9fba3924 | 74 | /* Configure each PWM channel: --------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 75 | /* - Single edge |
| frank26080115 | 0:bf7b9fba3924 | 76 | * - PWM Duty on each PWM channel determined by |
| frank26080115 | 0:bf7b9fba3924 | 77 | * the match on channel 0 to the match of that match channel. |
| frank26080115 | 0:bf7b9fba3924 | 78 | * Example: PWM Duty on PWM channel 1 determined by |
| frank26080115 | 0:bf7b9fba3924 | 79 | * the match on channel 0 to the match of match channel 1. |
| frank26080115 | 0:bf7b9fba3924 | 80 | */ |
| frank26080115 | 0:bf7b9fba3924 | 81 | |
| frank26080115 | 0:bf7b9fba3924 | 82 | /* Configure PWM channel edge option |
| frank26080115 | 0:bf7b9fba3924 | 83 | * Note: PWM Channel 1 is in single mode as default state and |
| frank26080115 | 0:bf7b9fba3924 | 84 | * can not be changed to double edge mode */ |
| frank26080115 | 0:bf7b9fba3924 | 85 | for (temp = 2; temp < 7; temp++) |
| frank26080115 | 0:bf7b9fba3924 | 86 | { |
| frank26080115 | 0:bf7b9fba3924 | 87 | PWM_ChannelConfig(LPC_PWM1, temp, PWM_CHANNEL_SINGLE_EDGE); |
| frank26080115 | 0:bf7b9fba3924 | 88 | } |
| frank26080115 | 0:bf7b9fba3924 | 89 | |
| frank26080115 | 0:bf7b9fba3924 | 90 | |
| frank26080115 | 0:bf7b9fba3924 | 91 | /* Configure match value for each match channel */ |
| frank26080115 | 0:bf7b9fba3924 | 92 | temp2 = 10; |
| frank26080115 | 0:bf7b9fba3924 | 93 | for (temp = 1; temp < 7; temp++) |
| frank26080115 | 0:bf7b9fba3924 | 94 | { |
| frank26080115 | 0:bf7b9fba3924 | 95 | /* Set up match value */ |
| frank26080115 | 0:bf7b9fba3924 | 96 | PWM_MatchUpdate(LPC_PWM1, temp, temp2, PWM_MATCH_UPDATE_NOW); |
| frank26080115 | 0:bf7b9fba3924 | 97 | /* Configure match option */ |
| frank26080115 | 0:bf7b9fba3924 | 98 | PWMMatchCfgDat.IntOnMatch = DISABLE; |
| frank26080115 | 0:bf7b9fba3924 | 99 | PWMMatchCfgDat.MatchChannel = temp; |
| frank26080115 | 0:bf7b9fba3924 | 100 | PWMMatchCfgDat.ResetOnMatch = DISABLE; |
| frank26080115 | 0:bf7b9fba3924 | 101 | PWMMatchCfgDat.StopOnMatch = DISABLE; |
| frank26080115 | 0:bf7b9fba3924 | 102 | PWM_ConfigMatch(LPC_PWM1, &PWMMatchCfgDat); |
| frank26080115 | 0:bf7b9fba3924 | 103 | /* Enable PWM Channel Output */ |
| frank26080115 | 0:bf7b9fba3924 | 104 | PWM_ChannelCmd(LPC_PWM1, temp, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 105 | /* Increase match value by 10 */ |
| frank26080115 | 0:bf7b9fba3924 | 106 | temp2 += 10; |
| frank26080115 | 0:bf7b9fba3924 | 107 | } |
| frank26080115 | 0:bf7b9fba3924 | 108 | |
| frank26080115 | 0:bf7b9fba3924 | 109 | /* Reset and Start counter */ |
| frank26080115 | 0:bf7b9fba3924 | 110 | PWM_ResetCounter(LPC_PWM1); |
| frank26080115 | 0:bf7b9fba3924 | 111 | PWM_CounterCmd(LPC_PWM1, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 112 | |
| frank26080115 | 0:bf7b9fba3924 | 113 | /* Start PWM now */ |
| frank26080115 | 0:bf7b9fba3924 | 114 | PWM_Cmd(LPC_PWM1, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 115 | |
| frank26080115 | 0:bf7b9fba3924 | 116 | /* Loop forever */ |
| frank26080115 | 0:bf7b9fba3924 | 117 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 118 | return 1; |
| frank26080115 | 0:bf7b9fba3924 | 119 | } |
| frank26080115 | 0:bf7b9fba3924 | 120 | |
| frank26080115 | 0:bf7b9fba3924 | 121 | /* With ARM and GHS toolsets, the entry point is main() - this will |
| frank26080115 | 0:bf7b9fba3924 | 122 | allow the linker to generate wrapper code to setup stacks, allocate |
| frank26080115 | 0:bf7b9fba3924 | 123 | heap area, and initialize and copy code and data segments. For GNU |
| frank26080115 | 0:bf7b9fba3924 | 124 | toolsets, the entry point is through __start() in the crt0_gnu.asm |
| frank26080115 | 0:bf7b9fba3924 | 125 | file, and that startup code will setup stacks and data */ |
| frank26080115 | 0:bf7b9fba3924 | 126 | int main(void) |
| frank26080115 | 0:bf7b9fba3924 | 127 | { |
| frank26080115 | 0:bf7b9fba3924 | 128 | return c_entry(); |
| frank26080115 | 0:bf7b9fba3924 | 129 | } |
| frank26080115 | 0:bf7b9fba3924 | 130 | |
| frank26080115 | 0:bf7b9fba3924 | 131 | |
| frank26080115 | 0:bf7b9fba3924 | 132 | #ifdef DEBUG |
| frank26080115 | 0:bf7b9fba3924 | 133 | /******************************************************************************* |
| frank26080115 | 0:bf7b9fba3924 | 134 | * @brief Reports the name of the source file and the source line number |
| frank26080115 | 0:bf7b9fba3924 | 135 | * where the CHECK_PARAM error has occurred. |
| frank26080115 | 0:bf7b9fba3924 | 136 | * @param[in] file Pointer to the source file name |
| frank26080115 | 0:bf7b9fba3924 | 137 | * @param[in] line assert_param error line source number |
| frank26080115 | 0:bf7b9fba3924 | 138 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 139 | *******************************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 140 | void check_failed(uint8_t *file, uint32_t line) |
| frank26080115 | 0:bf7b9fba3924 | 141 | { |
| frank26080115 | 0:bf7b9fba3924 | 142 | /* User can add his own implementation to report the file name and line number, |
| frank26080115 | 0:bf7b9fba3924 | 143 | ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
| frank26080115 | 0:bf7b9fba3924 | 144 | |
| frank26080115 | 0:bf7b9fba3924 | 145 | /* Infinite loop */ |
| frank26080115 | 0:bf7b9fba3924 | 146 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 147 | } |
| frank26080115 | 0:bf7b9fba3924 | 148 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 149 | |
| frank26080115 | 0:bf7b9fba3924 | 150 | /* |
| frank26080115 | 0:bf7b9fba3924 | 151 | * @} |
| frank26080115 | 0:bf7b9fba3924 | 152 | */ |