RT-Thread-【NuMaker-M2354试用】GPIO+PWM测试分享(持续更新中)RT-Thread问答社区

【NuMaker-M2354试用】GPIO+PWM测试分享(持续更新中)

发布于 2021-12-05 12:51:30 浏览：984 订阅该版

# M2354-开发板使用流程
[TOC]
##  *此次任务*
任务说明：
时间：要求一个月内完成任务
完成任务时间：11月19日-12月19日
这次我的任务就是GPIO+PWM的测试：
其中
 - GPIO为测试基础外设;
 - PWM为测试复杂外设。
## start
之前其实接触不是很多，算是边学边弄，新手遇到问题比较多。
###  开发环境
 - win10
 - git
 - sourcetree(个人习惯)
 - RT-Thread EVN 工具 + MDK5
### *功能模块的硬件介绍*
 - nu-maker-m2354-外设的简单示意图
![image.png](https://oss-club.rt-thread.org/uploads/20211205/3de3ef606f3e8726bb28be4071725ce3.png.webp)

- 收到的实物
![image.png](https://oss-club.rt-thread.org/uploads/20211205/a7eedaba7b059f482b38a9e719c7531e.png.webp)
  
 收到的实物有送一块屏幕  (需要自备一条可以烧写的micro usb线，不要单纯充电的)
### 功能模块的使用说明
  从gitee上下载rtthread完整版  再选择 gitee-master 分支，标签为 v4.0.4 及以上。
  我使用的是sourcetree ，直接git命令亦可。
![image.png](https://oss-club.rt-thread.org/uploads/20211205/5c81e4b4ebb54bf334d82303929c26be.png.webp)

- 删除bsp文件夹下，与numaker-m2354 无关的文件(即 bsp\nuvoton\numaker-m2354等) ，以减少文件的大小。
 - 在bsp\nuvoton\numaker-m2354 文件下，使用ENV工具，依次输入命令
    `menuconfig --generate`  
    `pkgs --update`  
    `scons --target=mdk5`

再用`menuconfig` 命令 裁剪自己需要的模块

### 外设性能指标测试
 ·main
```c
/**************************************************************************//**
*
* @copyright (C) 2019 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date            Author       Notes
* 2020-8-26       Wayne        First version
*
******************************************************************************/

#include <rtconfig.h>
#include <rtdevice.h>
#include <drv_gpio.h>
#include "NuMicro.h"

int main(int argc, char **argv)
{
#if defined(RT_USING_PIN)
    while (1)
    {
		rt_thread_mdelay(1000);
    }
#endif
    return 0;
}
```
 ·GPIO
```c
#include <rtconfig.h>
#include <rtdevice.h>
#include <drv_gpio.h>
/******

1.GPIO 输入
2.GPIO 输出
3.GPIO 中断

*********/
/* defined the LEDR pin: PD3 */
#define LEDY   NU_GET_PININDEX(NU_PD, 3)
#define LEDG   NU_GET_PININDEX(NU_PD, 2)
#define SW2   NU_GET_PININDEX(NU_PF, 11)
void led_entery(void *parameter);
void keycan_entery(void *parameter);
void led_entery(void *parameter)
{
	rt_pin_mode(LEDY, PIN_MODE_OUTPUT);
    rt_pin_mode(LEDG, PIN_MODE_OUTPUT);
	rt_kprintf("led_entery running...\n");
	while(1)
	{
		rt_pin_write(LEDY, PIN_HIGH);
		rt_pin_write(LEDG, PIN_LOW);
        rt_thread_mdelay(500);
        rt_pin_write(LEDY, PIN_LOW);
		rt_pin_write(LEDG, PIN_HIGH);
        rt_thread_mdelay(500);	
	}
}
static int led_entery_init(void){
    rt_thread_t thread = RT_NULL;
    thread = rt_thread_create("led_demo",led_entery,RT_NULL,1024,15,5);
    if(thread == RT_NULL)
    {
        rt_kprintf("rt_thread_create led_entery failed...\n");
        return RT_ERROR;
    }
    rt_thread_startup(thread);
	rt_kprintf("rt_thread_create led_entery successed...\n");
}
INIT_APP_EXPORT(led_entery_init); // 线程自动初始化

void keycan_entery(void *parameter)
{
	int SW2_pin_read,SW2_pin_read_last=0;
	rt_pin_mode(SW2, PIN_MODE_INPUT_PULLUP);
	rt_kprintf("sw2_entery running...\n");	
	while(1)
	{
		rt_thread_mdelay(20);
		SW2_pin_read=rt_pin_read(SW2);
		if(SW2_pin_read!=SW2_pin_read_last)//SW2有变化
		{
			rt_thread_mdelay(10);//消抖
			if(SW2_pin_read==0)
			{
				rt_kprintf("Button 2 is on\n");
			}
			if(SW2_pin_read==1)
			{
				rt_kprintf("Button 2 is off\n");
			}
			SW2_pin_read_last=SW2_pin_read;
		}
	}
}
static int sw2_entery_init(void){
    rt_thread_t thread = RT_NULL;
    thread = rt_thread_create("key_demo",keycan_entery,RT_NULL,1024,15,5);
    if(thread == RT_NULL)
    {
        rt_kprintf("rt_thread_create keycan_entery failed...\n");
        return RT_ERROR;
    }
    rt_thread_startup(thread);
	rt_kprintf("rt_thread_create keycan_entery successed...\n");
}
INIT_APP_EXPORT(sw2_entery_init); // 线程自动初始化

void read_pin(void *parameter)
{
	rt_pin_mode(SW2, PIN_MODE_INPUT_PULLUP);
    rt_kprintf("Button 2 = %d\n",rt_pin_read(SW2));
}
/* 导出到 msh 命令列表中 */
MSH_CMD_EXPORT(read_pin,read pin);
```
  ·PWM
```c
#include <rtconfig.h>
#include <rtdevice.h>
#include <drv_gpio.h>
#include "NuMicro.h"
/********************
MCU:M2354KJFAE(LQFP128)
Pin5:EPWM1_CH0
Pin6:EPWM1_CH1
Pin7:EPWM1_CH2
Pin8:EPWM1_CH3
Pin73:EPWM1_CH4
Pin74:EPWM1_CH5
Pin97:EPWM0_CH0
Pin98:EPWM0_CH1

********************/

#define PWM_DEV_NAME        "epwm0"      /* PWM 设备名称 */
#define PWM_DEV_CHANNEL     0           /* PWM 通道 */

int argv=100;
void pwm_example(void)
{
	
	int result = 0;
	struct rt_device_pwm *device = RT_NULL;
	struct rt_pwm_configuration cfg = {0};
	
    device = (struct rt_device_pwm *)rt_device_find(PWM_DEV_NAME);

if(argv>=1000)argv=0;else argv=argv+200;
	rt_pwm_set(device,PWM_DEV_CHANNEL,1000,argv);
	rt_pwm_enable(device,PWM_DEV_CHANNEL);
	
	cfg.channel =PWM_DEV_CHANNEL;
	result = rt_pwm_get(device, &cfg);
    if (result != RT_EOK)
    {
        rt_kprintf("Get info of device: [%s] error.\n", device);
    }
    else
    {
        rt_kprintf("Get info of device: [%s]:\n",device);
        rt_kprintf("period     : %d\n", cfg.period);
        rt_kprintf("pulse      : %d\n", cfg.pulse);
        rt_kprintf("Duty cycle : %d%%\n", (int)(((double)(cfg.pulse)/(cfg.period)) * 100));
    }
}
/* 导出到 msh 命令列表中 */
MSH_CMD_EXPORT(pwm_example,pwm_example0);

void example(void)
{
    /* Set multi-function pins for EPWM */
    SYS->GPE_MFPL = (SYS->GPE_MFPL & ~(SYS_GPE_MFPL_PE7MFP_Msk)) | EPWM0_CH0_PE7;
    SYS->GPE_MFPL = (SYS->GPE_MFPL & ~(SYS_GPE_MFPL_PE6MFP_Msk)) | EPWM0_CH1_PE6;
    SYS->GPE_MFPL = (SYS->GPE_MFPL & ~(SYS_GPE_MFPL_PE5MFP_Msk)) | EPWM0_CH2_PE5;
    SYS->GPE_MFPL = (SYS->GPE_MFPL & ~(SYS_GPE_MFPL_PE4MFP_Msk)) | EPWM0_CH3_PE4;	
	
	/* EPWM0 channel 0 frequency is 160000Hz, duty 50%, */
    EPWM_ConfigOutputChannel(EPWM0, 0, 160000, 50);

/* Enable output of EPWM0 channel 0 */
    EPWM_EnableOutput(EPWM0, EPWM_CH_0_MASK);

/* Enable EPWM0 channel 0 period interrupt, use channel 0 to measure time. */
    EPWM_EnablePeriodInt(EPWM0, 0, 0);
    NVIC_EnableIRQ(EPWM0_P0_IRQn);

/* Start */
    EPWM_Start(EPWM0, EPWM_CH_0_MASK);

//  EPWM_ConfigCaptureChannel(EPWM1, 0, 1000, 20);//PC12  Pin5
	EPWM_ConfigOutputChannel(EPWM0, 0,1000, 20);//占空比
}
/* 导出到 msh 命令列表中 */
MSH_CMD_EXPORT(example,example0);

void EPWM0_P0_IRQHandler(void)
{
    static int32_t i32Toggle = 0;

/* Update EPWM0 channel 0 period and duty */
    if(i32Toggle == 0)
    {
        EPWM_SET_CNR(EPWM0, 0, 99);
        EPWM_SET_CMR(EPWM0, 0, 40);
    }
    else
    {
        EPWM_SET_CNR(EPWM0, 0, 399);
        EPWM_SET_CMR(EPWM0, 0, 200);
    }
    i32Toggle ^= 1;
    /* Clear channel 0 period interrupt flag */
    EPWM_ClearPeriodIntFlag(EPWM0, 0);
}

```

### 可编译下载的代码，可给出gitee或者github链接

* （温馨提示：功能演示的视频可上传至B站，视频链接可放在测评文章里）

### issue记录地址：https://github.com/RT-Thread/rt-thread/issues

![image.png](https://oss-club.rt-thread.org/uploads/20211205/c73930b282994efb486e9a9903027e6f.png.webp)

## 下载路径

## 编译过程

## 调试
###pwm
我使用的是epwm0 通道0 ,97号引脚。
![image.png](https://oss-club.rt-thread.org/uploads/20211227/a22e389bb98c50e121abfb215946e369.png.webp)
终端显示的epwm的参数。
![image.png](https://oss-club.rt-thread.org/uploads/20211227/91ffab2bb54b956628d5a9958f35f55e.png)
示波器显示的波形。
![image.png](https://oss-club.rt-thread.org/uploads/20211227/287f66e288ba8b10267d4ace6e8a06ad.jpg.webp)

###gpio
读取引脚电平高低，及按键上下沿扫描 
![image.png](https://oss-club.rt-thread.org/uploads/20211227/44b81531a99790235fe36d6efd434c15.png)

#  过程中我遇到的问题及解决

1. 连接线，需要可以烧写的micro usb ，   之前一直识别不了开发板，最后发现是线的问题，还需要安装Nu-Link_Keil_Driver 3.07.7246r.exe  驱动。
 2. 在使用ENV工具的时候，pkgs --update  命令不能正常使用，在网上找了很多
 https://club.rt-thread.org/ask/question/429846.html?order=date    根据这个方法，再多次安装 pip工具及setuptools  ，正常更新了。  再  pip install requests 命令+ install python-requests命令   解决这个问题。