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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