[National Technology Low Power Series N32L43x Review] 1. Development Board Unboxing

emmnn

[National Technology Low Power Series N32L43x Review] 1. Development Board Unboxing [Copy link]

 

Preface

I happened to go home two days ago, and I didn't get the board back from the courier station until today to prepare for the evaluation. First of all, I would like to thank the EEWORLD forum for providing a platform and hosting various development board and module evaluation activities, and also thank National Technology for providing the evaluation board. Without further ado, let's start with this issue's unboxing introduction.

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1. Unboxing

After opening the box, you can see that in addition to providing the development board, the official also thoughtfully provides a communication cable with a mini-USB interface.

Take out the development board, and the onboard peripherals are also clear at a glance. In addition to the common LEDs and buttons, the evaluation board leads out all the IO pins on the MCU, which is convenient for the subsequent development and use of the MCU. In addition, the board also integrates the NS-LINK module, through the mini-USB interface (DEBUG USB) on the board, it is very convenient to burn or debug the development board.

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2. Download

Regarding the data part, there is a development data package on the forum, or you can download it directly from the official server at the following address:

[National Technology N32 MCU Development Package] --N32L43x Series

FTP server: ftp://58.250.18.138

As you can see, the official information provided is very complete, from basic MCU user and data manuals, hardware schematics, to instructions for setting up the development environment, etc., which is very friendly to novices.

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3. Development environment construction

As for setting up the development environment, we can see from the documentation that the official website provides a variety of development environment application documentation guidance. Here I choose the more familiar MDK keil as the basic development environment. I only need to install the official pack package, and then I can directly compile and debug the project under MDK keil.

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4. Project demo

Regarding the demonstration of the project demo, usart outputs "hello world" as a demonstration project.

As can be seen from the schematic diagram, PA9 and PA10 can be reused as USART output pins. Here I directly use the USB-TTL module and need to disconnect the jumper on J5.

Directly use the official routines, compile and burn.

/*****************************************************************************
 * 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.
 * ****************************************************************************/

/**
 * @File main.c
 * @author Nations
 * @version 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;

/**
 * @brief  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)
    {
    }
}

/**
 * @brief  Configures 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);
}

/**
 * @brief  Configures 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

/**
 * @brief  Reports 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

/**
 * @}
 */

/**
 * @}
 */

The final demonstration results are as follows:

freebsder

Thanks for sharing, looking forward to the follow-up!

emmnn

freebsder posted on 2022-7-5 17:56 Thank you for sharing, looking forward to the follow-up!