国民技术MCU(Microcontroller Unit)是一种集成了微处理器、存储器、输入输出接口等硬件功能的集成电路芯片。以下是一些常见的国民技术MCU种类及其代码举例:
- 国民技术STM32F103C8T6:这是一个基于ARM Cortex-M3内核的32位MCU,具有丰富的外设和接口,适用于各种嵌入式应用。以下是一个简单的示例代码,用于点亮一个LED灯:
#include "stm32f10x.h"
void delay(uint32_t count) {
for (; count != 0; count--);
}
int main(void) {
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
while (1) {
GPIO_SetBits(GPIOC, GPIO_Pin_13);
delay(1000000);
GPIO_ResetBits(GPIOC, GPIO_Pin_13);
delay(1000000);
}
}
- 国民技术STM32F407ZGT6:这是一个基于ARM Cortex-M4内核的32位MCU,具有更高的性能和更多的外设。以下是一个简单的示例代码,用于控制一个舵机:
#include "stm32f4xx.h"
void delay(uint32_t count) {
for (; count != 0; count--);
}
void TIM2_IRQHandler(void) {
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) {
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
if (TIM_GetCounter(TIM2) < 1000) {
GPIO_SetBits(GPIOA, GPIO_Pin_5);
} else {
GPIO_ResetBits(GPIOA, GPIO_Pin_5);
}
}
}
int main(void) {
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
TIM_TimeBaseStructure.TIM_Period = 1999;
TIM_TimeBaseStructure.TIM_Prescaler = 71;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
TIM_Cmd(TIM2, ENABLE);
while (1) {
}
}
以上代码仅供参考,实际使用时需要根据具体的硬件平台和需求进行修改。
标签:TIM2,国民,Pin,技术,NVIC,TIM,InitStructure,GPIO,MCU From: https://blog.51cto.com/u_15950621/9116258