21ic电子技术开发论坛 › 单片机与嵌入式系统 › 新唐MCU › 求MNIN51 用PWM点LED渐明渐暗示例程序
返回列表 发新帖我要提问

[DemoCode下载] 求MNIN51 用PWM点LED渐明渐暗示例程序

[复制链接]
2042|7
 楼主| wuchengyong 发表于 2017-3-14 14:46 | 显示全部楼层 |阅读模式
LED, PWM, ni, MCU, 新塘
请那位大哥提供一个，MNIN51  用PWM点LED渐明渐暗示例程序 。开始学习新塘MCU

回复

收藏 举报

相关帖子
huangcunxiake 发表于 2017-3-14 18:44 | 显示全部楼层
复制
  1. /******************************************************************************
    

  2.  * [url=home.php?mod=space&uid=288409]@file[/url]     main.c
    

  3.  * [url=home.php?mod=space&uid=895143]@version[/url]  V1.00
    

  4.  * $Revision: 2 $
    

  5.  * $Date: 15/09/24 5:28p $
    

  6.  * [url=home.php?mod=space&uid=247401]@brief[/url]    Demonstrate the PWM double buffer feature.
    

  7.  *
    

  8.  * @note
    

  9.  * Copyright (C) 2015 Nuvoton Technology Corp. All rights reserved.
    

  10. *****************************************************************************/
    

  11. #include <stdio.h>
    

  12. #include "Mini51Series.h"
    


  13. 

  14. uint32_t duty30, duty60;
    

  15. void PWM_IRQHandler(void)
    

  16. {
    

  17.     static int toggle = 0;  // First two already fill into PWM, so start from 30%
    


  18. 

  19.     // Update PWM channel 0 duty
    

  20.     if(toggle == 0) {
    

  21.         PWM_SET_CMR(PWM, 0, duty30);
    

  22.     } else {
    

  23.         PWM_SET_CMR(PWM, 0, duty60);
    

  24.     }
    

  25.     toggle ^= 1;
    

  26.     // Clear channel 0 period interrupt flag
    

  27.     PWM_ClearPeriodIntFlag(PWM, 0);
    

  28. }
    


  29. 


  30. 


  31. 

  32. void SYS_Init(void)
    

  33. {
    

  34.     /*---------------------------------------------------------------------------------------------------------*/
    

  35.     /* Init System Clock                                                                                       */
    

  36.     /*---------------------------------------------------------------------------------------------------------*/
    


  37. 

  38.     /* Unlock protected registers */
    

  39.     SYS_UnlockReg();
    


  40. 

  41.     /* Set P5 multi-function pins for XTAL1 and XTAL2 */
    

  42.     SYS->P5_MFP = SYS_MFP_P50_XTAL1 | SYS_MFP_P51_XTAL2;
    


  43. 

  44.     /* Enable external 12MHz XTAL (UART), HIRC */
    

  45.     CLK->PWRCON = CLK_PWRCON_OSC22M_EN_Msk | CLK_PWRCON_HXT;
    


  46. 

  47.     /* Waiting for clock ready */
    

  48.     CLK_WaitClockReady(CLK_CLKSTATUS_OSC22M_STB_Msk | CLK_CLKSTATUS_XTL_STB_Msk);
    


  49. 

  50.     /* Switch HCLK clock source to XTL */
    

  51.     CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_XTAL,CLK_CLKDIV_HCLK(1));
    


  52. 

  53.     /* Enable IP clock */
    

  54.     CLK->APBCLK = CLK_APBCLK_UART_EN_Msk | CLK_APBCLK_PWM01_EN_Msk;
    


  55. 

  56.     /* Select UART clock source from external crystal*/
    

  57.     CLK->CLKSEL1 = (CLK->CLKSEL1 & ~CLK_CLKSEL1_UART_S_Msk) | CLK_CLKSEL1_UART_S_XTAL;
    


  58. 

  59.     /* Update System Core Clock */
    

  60.     /* User can use SystemCoreClockUpdate() to calculate SystemCoreClock and CycylesPerUs automatically. */
    

  61.     SystemCoreClockUpdate();
    


  62. 


  63. 

  64.     /*---------------------------------------------------------------------------------------------------------*/
    

  65.     /* Init I/O Multi-function                                                                                 */
    

  66.     /*---------------------------------------------------------------------------------------------------------*/
    

  67.     /* Set P0 multi-function pins for UART RXD, TXD */
    

  68.     SYS->P0_MFP = SYS_MFP_P00_TXD | SYS_MFP_P01_RXD;
    


  69. 


  70. 

  71.     /* Set P2 multi-function pin for PWM Channel 0  */
    

  72.     SYS->P2_MFP = SYS_MFP_P22_PWM0;
    


  73. 


  74. 

  75.     /* Lock protected registers */
    

  76.     SYS_LockReg();
    

  77. }
    


  78. 

  79. int32_t main (void)
    

  80. {
    

  81.     /* Init System, IP clock and multi-function I/O
    

  82.        In the end of SYS_Init() will issue SYS_LockReg()
    

  83.        to lock protected register. If user want to write
    

  84.        protected register, please issue SYS_UnlockReg()
    

  85.        to unlock protected register if necessary */
    

  86.     SYS_Init();
    


  87. 

  88.     /* Init UART to 115200-8n1 for print message */
    

  89.     UART_Open(UART0, 115200);
    


  90. 

  91.     printf("This sample changed PWM0 output between 30%% and 60%% duty ratio\n");
    

  92.     /*
    

  93.         PWM channel 0 wave form of this sample changed between 30% and 60% duty ratio
    

  94.     */
    

  95.     PWM_ConfigOutputChannel(PWM, 0, 1000, 30);
    


  96. 

  97.     // Save 30% duty setting
    

  98.     duty30 = PWM->CMR[0];
    

  99.     // Calculate 60% duty setting. CMR store the actual value minus 1.
    

  100.     duty60 = (duty30 + 1) * 2 - 1;
    


  101. 

  102.     // Enable output of all PWM channel 0
    

  103.     PWM_EnableOutput(PWM, 1);
    


  104. 

  105.     // Enable PWM channel 0 period interrupt
    

  106.     PWM_EnablePeriodInt(PWM, 0, PWM_PERIOD_INT_UNDERFLOW);
    

  107.     NVIC_EnableIRQ(PWM_IRQn);
    


  108. 

  109.     // Start
    

  110.     PWM_Start(PWM, 0x1);
    


  111. 

  112.     // Fill second duty setting immediately after PWM start
    

  113.     PWM_SET_CMR(PWM, 0, duty60);
    


  114. 

  115.     while(1);
    


  116. 

  117. }
    


  118. 

  119. /*** (C) COPYRIGHT 2015 Nuvoton Technology Corp. ***/
    


  120.
回复

收藏 举报

huangcunxiake 发表于 2017-3-14 18:45 | 显示全部楼层
这个是官方提供的例程序，你可以修改一下就能用了。一会儿再给你个。
回复

收藏 举报

huangcunxiake 发表于 2017-3-14 18:47 | 显示全部楼层
复制

  1. 

  2. /******************************************************************************
    

  3.  * @file     main.c
    

  4.  * @version  V1.00
    

  5.  * $Revision: 7 $
    

  6.  * $Date: 15/10/06 1:21p $
    

  7.  * @brief    Demonstrate the dead-zone feature with PWM.
    

  8.  *
    

  9.  * @note
    

  10.  * Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
    

  11. *****************************************************************************/
    

  12. #include <stdio.h>
    

  13. #include "Mini51Series.h"
    


  14. 


  15. 

  16. void PWM_IRQHandler(void)
    

  17. {
    

  18.     static uint32_t cnt;
    

  19.     static uint32_t out;
    


  20. 

  21.     // Channel 0 frequency is 100Hz, every 1 second enter this IRQ handler 100 times.
    

  22.     if(++cnt == 100) {
    

  23.         if(out)
    

  24.             PWM_EnableOutput(PWM, 0x3F);
    

  25.         else
    

  26.             PWM_DisableOutput(PWM, 0x3F);
    

  27.         out ^= 1;
    

  28.         cnt = 0;
    

  29.     }
    

  30.     // Clear channel 0 period interrupt flag
    

  31.     PWM_ClearPeriodIntFlag(PWM, 0);
    

  32. }
    


  33. 


  34. 

  35. void SYS_Init(void)
    

  36. {
    

  37.     /*---------------------------------------------------------------------------------------------------------*/
    

  38.     /* Init System Clock                                                                                       */
    

  39.     /*---------------------------------------------------------------------------------------------------------*/
    


  40. 

  41.     /* Unlock protected registers */
    

  42.     SYS_UnlockReg();
    


  43. 

  44.     /* Set P5 multi-function pins for XTAL1 and XTAL2 */
    

  45.     SYS->P5_MFP &= ~(SYS_MFP_P50_Msk | SYS_MFP_P51_Msk);
    

  46.     SYS->P5_MFP |= (SYS_MFP_P50_XTAL1 | SYS_MFP_P51_XTAL2);
    


  47. 

  48.     /* Enable external 12MHz XTAL, internal 22.1184MHz */
    

  49.     CLK->PWRCON = CLK_PWRCON_XTL12M | CLK_PWRCON_IRC22M_EN_Msk;
    


  50. 

  51.     /* Waiting for clock ready */
    

  52.     CLK_WaitClockReady(CLK_CLKSTATUS_XTL_STB_Msk | CLK_CLKSTATUS_IRC22M_STB_Msk);
    


  53. 

  54.     /* Enable IP clock */
    

  55.     CLK->APBCLK = CLK_APBCLK_UART_EN_Msk | CLK_APBCLK_PWM01_EN_Msk | CLK_APBCLK_PWM23_EN_Msk | CLK_APBCLK_PWM45_EN_Msk;
    


  56. 

  57.     /* Select UART clock source from external crystal*/
    

  58.     CLK->CLKSEL1 = (CLK->CLKSEL1 & ~CLK_CLKSEL1_UART_S_Msk) | CLK_CLKSEL1_UART_S_XTAL;
    


  59. 

  60.     /* Update System Core Clock */
    

  61.     /* User can use SystemCoreClockUpdate() to calculate SystemCoreClock and CycylesPerUs automatically. */
    

  62.     SystemCoreClockUpdate();
    


  63. 


  64. 

  65.     /*---------------------------------------------------------------------------------------------------------*/
    

  66.     /* Init I/O Multi-function                                                                                 */
    

  67.     /*---------------------------------------------------------------------------------------------------------*/
    

  68.     /* Set P1 multi-function pins for UART RXD, TXD */
    

  69.     SYS->P0_MFP = SYS_MFP_P00_TXD | SYS_MFP_P01_RXD;
    


  70. 

  71.     /* Set P0 multi-function pins for PWM Channel 5  */
    

  72.     SYS->P0_MFP = SYS_MFP_P04_PWM5;
    

  73.     /* Set P2 multi-function pins for PWM Channel 0~4  */
    

  74.     SYS->P2_MFP = SYS_MFP_P22_PWM0 | SYS_MFP_P23_PWM1 | SYS_MFP_P24_PWM2 | SYS_MFP_P25_PWM3 | SYS_MFP_P26_PWM4;
    


  75. 


  76. 

  77.     /* Lock protected registers */
    

  78.     SYS_LockReg();
    

  79. }
    


  80. 


  81. 

  82. int32_t main (void)
    

  83. {
    

  84.     /* Init System, IP clock and multi-function I/O
    

  85.        In the end of SYS_Init() will issue SYS_LockReg()
    

  86.        to lock protected register. If user want to write
    

  87.        protected register, please issue SYS_UnlockReg()
    

  88.        to unlock protected register if necessary */
    

  89.     SYS_Init();
    


  90. 

  91.     /* Init UART to 115200-8n1 for print message */
    

  92.     UART_Open(UART, 115200);
    


  93. 

  94.     printf("\nThis sample code will output PWM channel 0 to with different\n");
    

  95.     printf("frequency and duty, enable dead zone function of all PWM pairs.\n");
    

  96.     printf("And also enable/disable PWM output every 1 second.\n");
    

  97.     // PWM0 frequency is 100Hz, duty 30%,
    

  98.     PWM_ConfigOutputChannel(PWM, 0, 100, 30);
    

  99.     PWM_EnableDeadZone(PWM, 0, 400);
    


  100. 

  101.     // PWM2 frequency is 300Hz, duty 50%
    

  102.     PWM_ConfigOutputChannel(PWM, 2, 300, 50);
    

  103.     PWM_EnableDeadZone(PWM, 2, 200);
    


  104. 

  105.     // PWM4 frequency is 500Hz, duty 70%
    

  106.     PWM_ConfigOutputChannel(PWM, 4, 600, 70);
    

  107.     PWM_EnableDeadZone(PWM, 4, 100);
    


  108. 

  109.     // Enable output of all PWM channels
    

  110.     PWM_EnableOutput(PWM, 0x3F);
    


  111. 

  112.     // Enable PWM channel 0 period interrupt, use channel 0 to measure time.
    

  113.     PWM_EnablePeriodInt(PWM, 0, 0);
    

  114.     NVIC_EnableIRQ(PWM_IRQn);
    


  115. 

  116.     // Start
    

  117.     PWM_Start(PWM, 0x3F);
    


  118. 

  119.     while(1);
    


  120. 

  121. }
    


  122. 

  123. /*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
    


  124.
回复

收藏 举报

 楼主| wuchengyong 发表于 2017-3-14 18:52 | 显示全部楼层
好的。先了解一下，谢谢！！！
回复

收藏 举报

598330983 发表于 2017-3-14 20:39 | 显示全部楼层
http://www.nuvoton.com/resource- ... CMSIS_v3.01.001.zip
下载这个开发包啊，然后例子和库函数都有，参考一下。
回复

收藏 举报

mintspring 发表于 2017-3-14 20:52 | 显示全部楼层
弄个循环操作PWM。
回复

收藏 举报

wahahaheihei 发表于 2017-3-17 19:17 | 显示全部楼层
也可以用定时器模拟这个PWM。
回复

收藏 举报

返回列表 发新帖
高级模式
B Color Image Link Quote Code Smilies
您需要登录后才可以回帖 登录 | 注册

本版积分规则

wuchengyong

4

主题

6

帖子

0

粉丝
快速回复 在线客服 返回列表 返回顶部