本帖最后由 binoo7 于 2022-3-4 23:00 编辑
学习第一步，点灯来开路。
上一篇帖子，我讲了一下开发板的拆箱和资料的下载，刚才我在测试LED的时候发现了一个问题，我发现我下载的例程不是这个开发板，下面跟大家分享一下，避免大家踩坑。
我这个开发板的板号是：N32G45XVL-STB_V1.1而我下载的例程对应的板号是：N32G457QE_EVB V1.0
不过没关系了，主芯片一样就行了，首先我们要下载一下PACK包，也就是用keil开发的话，需要支持一下这个芯片的型号和FLM算法。这样的话下载和调试的时候，编译器好操作对应的寄存器。
Nationstech.N32G45x_DFP.1.0.4.pack我下载的是这个版本的。安装的话就是无脑下一步，最后安装结束。
然后打开示例配置芯片型号，示例默认的型号和我们开发板上是不一样的，所以要记得重新修改一下。
配置C99模式，示例默认没有勾选。如果不配置的话，所有的函数声明都要放到开头，所以记得勾选一下。
初始化引脚我这里用了三个LED灯，通过看板子上的丝印来修改对应的IO口。
然后就是点亮LED灯了，让他闪动起来。
这里我要感谢一下咱们的版主，我用了他提供的两个延时函数。
/*****************************************************************************
* 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.
* ****************************************************************************/
/**
* [url=home.php?mod=space&uid=288409]@file[/url] main.c
* [url=home.php?mod=space&uid=187600]@author[/url] Nations
* [url=home.php?mod=space&uid=895143]@version[/url] v1.0.0
*
* [url=home.php?mod=space&uid=17282]@CopyRight[/url] Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
*/
#include "main.h"
#include <stdio.h>
#include <stdint.h>
/**
* [url=home.php?mod=space&uid=247401]@brief[/url] Inserts a delay time.
* @param count specifies the delay time length.
*/
void Delay(uint32_t count)
{
for (; count > 0; count--)
;
}
/**
* [url=home.php?mod=space&uid=247401]@brief[/url] Configures LED GPIO.
* @param GPIOx x can be A to G to select the GPIO port.
* @param Pin This parameter can be GPIO_PIN_0~GPIO_PIN_15.
*/
void LedInit(GPIO_Module* GPIOx, uint16_t Pin)
{
GPIO_InitType GPIO_InitStructure;
/* Check the parameters */
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
/* Enable the GPIO Clock */
if (GPIOx == GPIOA)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA, ENABLE);
}
else if (GPIOx == GPIOB)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOB, ENABLE);
}
else if (GPIOx == GPIOC)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOC, ENABLE);
}
else if (GPIOx == GPIOD)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOD, ENABLE);
}
else if (GPIOx == GPIOE)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOE, ENABLE);
}
else if (GPIOx == GPIOF)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOF, ENABLE);
}
else
{
if (GPIOx == GPIOG)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOG, ENABLE);
}
}
/* Configure the GPIO pin */
if (Pin <= GPIO_PIN_ALL)
{
GPIO_InitStructure.Pin = Pin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitPeripheral(GPIOx, &GPIO_InitStructure);
}
}
/**
* [url=home.php?mod=space&uid=247401]@brief[/url] Turns selected Led on.
* @param GPIOx x can be A to G to select the GPIO port.
* @param Pin This parameter can be GPIO_PIN_0~GPIO_PIN_15.
*/
void LedOn(GPIO_Module* GPIOx, uint16_t Pin)
{
GPIOx->PBSC = Pin;
}
/**
* [url=home.php?mod=space&uid=247401]@brief[/url] Turns selected Led Off.
* @param GPIOx x can be A to G to select the GPIO port.
* @param Pin This parameter can be GPIO_PIN_0~GPIO_PIN_15.
*/
void LedOff(GPIO_Module* GPIOx, uint16_t Pin)
{
GPIOx->PBC = Pin;
}
/**
* @brief Turns selected Led on or off.
* @param GPIOx x can be A to G to select the GPIO port.
* @param Pin This parameter can be one of the following values:
* [url=home.php?mod=space&uid=2817080]@ARG[/url] GPIO_PIN_0~GPIO_PIN_15: set related pin on
* [url=home.php?mod=space&uid=2817080]@ARG[/url] (GPIO_PIN_0<<16)~(GPIO_PIN_15<<16): clear related pin off
*/
void LedOnOff(GPIO_Module* GPIOx, uint32_t Pin)
{
GPIOx->PBSC = Pin;
}
/**
* @brief Toggles the selected Led.
* @param GPIOx x can be A to G to select the GPIO port.
* @param Pin This parameter can be GPIO_PIN_0~GPIO_PIN_15.
*/
void LedBlink(GPIO_Module* GPIOx, uint16_t Pin)
{
GPIOx->POD ^= Pin;
}
/**
* @brief Assert failed function by user.
* @param file The name of the call that failed.
* @param line The source line number of the call that failed.
*/
#ifdef USE_FULL_ASSERT
void assert_failed(const uint8_t* expr, const uint8_t* file, uint32_t line)
{
while (1)
{
}
}
#endif // USE_FULL_ASSERT
void simple_delay_us(uint32_t x)
{
for (uint32_t i = 0; i < x; ++i)
{
for (uint32_t j = 0; j < 40; ++j)
{
__nop();
}
}
}
void simple_delay_ms(uint32_t x)
{
for(uint32_t i = 0; i < x; ++i)
{
simple_delay_us(1000);
}
}
/**
* @brief Main program.
*/
uint32_t time_delay=0;
int main(void)
{
/*SystemInit() function has been called by startup file startup_n32g45x.s*/
LedInit(GPIOA, GPIO_PIN_8);
LedInit(GPIOB, GPIO_PIN_5);
while (1)
{
LedBlink(GPIOA,GPIO_PIN_8);
LedBlink(GPIOB,GPIO_PIN_5);
simple_delay_ms(100);
}
}
/**
* @}
*/
跑完了这个流程以后，基本上简单的程序大家应该可以写了，我看了一下他们提供的库，跟某32的标准库很像，嘿嘿，大家用起来应该问题不大。
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，一大早学习一下
