在环境搭建时首先将PACK安装至Keil当中：
在PACK Installer当中选取Import Packs，然后找到文件安装即可
官方资料给出了PACK安装包，
安装完成之后再Pack当中可以找到N32A455VEL7：
首先测试例程中的LedBlink，程序如下：
/*****************************************************************************
* Copyright (c) 2022, 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.
* ****************************************************************************/
/**
*
* @copyright Copyright (c) 2022, Nations Technologies Inc. All rights reserved.
*/
#include "main.h"
#include <stdio.h>
#include <stdint.h>
/**
*
@brief Inserts a delay time.
* @param count specifies the delay time length.
*/
void Delay(uint32_t count)
{
for (; count > 0; count--)
;
}
/**
* @brief 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
{
}
/* 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);
}
}
/**
* @brief 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->PBC = Pin;
}
/**
* @brief 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->PBSC = 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:
*
@arg GPIO_PIN_0~GPIO_PIN_15: set related pin on
* @arg (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
/**
* @brief Main program.
*/
int main(void)
{
/*SystemInit() function has been called by startup file startup_n32a455.s*/
/* Initialize Led1~Led5 as output pushpull mode*/
LedInit(PORT_GROUP2, LED1_PIN | LED2_PIN);
LedInit(PORT_GROUP2, LED3_PIN | LED4_PIN | LED5_PIN);
/*Turn on Led1*/
LedOn(PORT_GROUP2, LED1_PIN);
while (1)
{
/*LED1_PORT and LED2_PORT are the same port group.Enable Led2 blink and not effect Led1 by Exclusive-OR
* operation.*/
LedBlink(PORT_GROUP2, LED2_PIN);
/*LED3_PORT, LED4_PORT and LED5_PORT are the same port group.*/
/*Turn Led4 and Led5 off and not effect other ports by PBC register,correspond to
* PORT_GROUP2->POD&=~(LED4_PIN|LED5_PIN);*/
LedOn(PORT_GROUP2, LED4_PIN | LED5_PIN);
/* Insert delay */
Delay(0x28FFFF);
/*Turn Led4 and Led5 on,turn Led3 off and not effect other ports by PBSC register,correspond to
* PORT_GROUP2->POD&=~(LED3_PIN),then PORT_GROUP2->POD|=(LED4_PIN|LED5_PIN);*/
LedOnOff(PORT_GROUP2, (LED3_PIN << 16) | LED4_PIN | LED5_PIN);
/* Insert delay */
Delay(0x28FFFF);
/*Turn on Led3*/
LedOff(PORT_GROUP2, LED3_PIN);
/* Insert delay */
Delay(0x28FFFF);
}
}
/**
* @}
*/
编译以及下载不在此处赘述，以上程序完成红色LED常亮，绿色闪烁，照片如下：
之后修改程序，将其改为绿灯常亮，红灯闪烁，即修改程序中LED1和LED2即可
效果如图所示：
整体来说上手较为容易。
提升卡
变色卡
千斤顶
1/8 
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