【国民技术低功耗系列N32L43x测评】1、开发板开箱

emmnn 发表于 2022-7-2 22:45

本帖最后由 emmnn 于 2022-7-4 21:35 编辑

前言   

    前两天刚好有事回家，直到今天才到快递站取回板子准备测评工作。在此，首先非常感谢EEWORLD论坛，提供平台及举办各种开发板和模组的测评活动，也感谢国民技术提供的测评板。话不多说，下面就开始进入本期的开箱介绍。



<hr />
1、开箱

    打开包装盒，可以看到，官方除了提供开发板外，还很贴心的提供了一根mini-usb接口的通讯线。



    拿出开发板，板载外设也是一目了然。除了常见的led，按键外，测评板将mcu上所有IO引脚引出，方便后续对mcu的开发及使用。此外，板上还集成了NS-LINK模块，通过板上的mini-usb接口（DEBUG USB)，可以很方便的对开发板进行烧录或调试。

<hr />
2、资料下载

    关于资料部分，论坛上有开发资料包，也可以直接到官方服务器下载，地址如下：

    <a href="https://bbs.eeworld.com.cn/thread-1202649-1-1.html" target="_blank">【国民技术 N32 MCU 开发资料包】--N32L43x系列</a>

    FTP服务器：ftp://58.250.18.138

     可以看到，官方提供的资料还是很齐全的，从基本的mcu用户和数据手册，硬件原理图，到开发环境的搭建说明等，对于新手来说还是特别友好的。

<hr />
3、开发环境搭建

     关于开发环境的搭建，从文档资料可以看到，官方提供了多种开发环境应用文档指导。这里我选择较为熟悉的MDK keil作为基本的开发环境，只需要安装好官方提供的pack包，就可以直接在MDK keil下编译及调试工程项目了。



<hr />
4、工程demo演示

    关于工程demo的演示，就usart输出"hello world"作为演示工程。

     从原理图可以看出，PA9，PA10可复用为USART输出脚使用，这里我直接使用USB-TTL模块，需要把J5上的跳线断开。

     直接使用官方提供的例程，编译烧录。

<pre>
<code class="language-cpp">/*****************************************************************************
* Copyright (c) 2019, Nations Technologies Inc.
*
* All rights reserved.
* ****************************************************************************
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Nations' name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL NATIONS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ****************************************************************************/

/**
* <a href="home.php?mod=space&uid=1307177" target="_blank">@File</a> main.c
* <a href="home.php?mod=space&uid=1315547" target="_blank">@author</a> Nations
* <a href="home.php?mod=space&uid=252314" target="_blank">@version</a> v1.0.0
*
* @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
*/
#include <stdio.h>
#include "main.h"

/** @addtogroup N32L43X_StdPeriph_Examples
* @{
*/

/** @addtogroup USART_Printf
* @{
*/

USART_InitType USART_InitStructure;

/**
* <a href="home.php?mod=space&uid=159083" target="_blank">@brief</a>Main program
*/
int main(void)
{
/* System Clocks Configuration */
RCC_Configuration();

/* Configure the GPIO ports */
GPIO_Configuration();

/* USARTy and USARTz configuration ------------------------------------------------------*/
USART_StructInit(&USART_InitStructure);
USART_InitStructure.BaudRate = 115200;
USART_InitStructure.WordLength = USART_WL_8B;
USART_InitStructure.StopBits = USART_STPB_1;
USART_InitStructure.Parity = USART_PE_NO;
USART_InitStructure.HardwareFlowControl = USART_HFCTRL_NONE;
USART_InitStructure.Mode = USART_MODE_RX | USART_MODE_TX;

/* Configure USARTx */
USART_Init(USARTx, &USART_InitStructure);
/* Enable the USARTx */
USART_Enable(USARTx, ENABLE);

/* Output a message on Hyperterminal using printf function */
printf("\n\rUSART Printf Example: retarget the C library printf function to the USART\n\r");
printf("hello world. \r\n");

while (1)
{
}
}

/**
* @briefConfigures the different system clocks.
*/
void RCC_Configuration(void)
{
/* Enable GPIO clock */
GPIO_APBxClkCmd(USARTx_GPIO_CLK, ENABLE);
/* Enable USARTx Clock */
USART_APBxClkCmd(USARTx_CLK, ENABLE);
}

/**
* @briefConfigures the different GPIO ports.
*/
void GPIO_Configuration(void)
{
GPIO_InitType GPIO_InitStructure;

/* Initialize GPIO_InitStructure */
GPIO_InitStruct(&GPIO_InitStructure);

/* Configure USARTx Tx as alternate function push-pull */
GPIO_InitStructure.Pin = USARTx_TxPin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Alternate = USARTx_Tx_GPIO_AF;
GPIO_InitPeripheral(USARTx_GPIO, &GPIO_InitStructure);

/* Configure USARTx Rx as alternate function push-pull and pull-up */
GPIO_InitStructure.Pin = USARTx_RxPin;
GPIO_InitStructure.GPIO_Pull = GPIO_Pull_Up;
GPIO_InitStructure.GPIO_Alternate = USARTx_Rx_GPIO_AF;
GPIO_InitPeripheral(USARTx_GPIO, &GPIO_InitStructure);
}

/* retarget the C library printf function to the USART */
int fputc(int ch, FILE* f)
{
USART_SendData(USARTx, (uint8_t)ch);
while (USART_GetFlagStatus(USARTx, USART_FLAG_TXDE) == RESET)
 ;

return (ch);
}

#ifdef USE_FULL_ASSERT

/**
* @briefReports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file pointer to the source file name
* @param line assert_param error line source number
*/
void assert_failed(const uint8_t* expr, const uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

/* Infinite loop */
while (1)
{
}
}

#endif

/**
* @}
*/

/**
* @}
*/
</code></pre>

最后演示结果如下：

freebsder 发表于 2022-7-5 17:56

谢谢分享，期待后续！

emmnn 发表于 2022-7-7 09:16

freebsder 发表于 2022-7-5 17:56
谢谢分享，期待后续！

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【国民技术低功耗系列N32L43x测评】1、开发板开箱