keil5中的#define TRIG_PIN GPIO_Pin_0是什么
时间: 2023-04-10 08:03:37 浏览: 123
Keil5是一款嵌入式开发工具,主要用于编写和调试嵌入式系统的程序。它支持多种处理器架构和编程语言,包括C、C++和汇编语言。Keil5具有强大的调试功能,可以帮助开发人员快速定位和解决程序中的问题。此外,Keil5还提供了丰富的代码库和示例程序,方便开发人员快速开发嵌入式系统。
相关问题
STM32F103C8T6用keil5写超声波传感器的代码
以下是一个简单的超声波传感器代码示例,使用STM32F103C8T6和Keil5编写:
#include "stm32f10x.h"
#define TRIG_PIN GPIO_Pin_0
#define ECHO_PIN GPIO_Pin_1
#define TRIG_PORT GPIOA
#define ECHO_PORT GPIOA
void delay_us(uint32_t us) {
uint32_t i;
for (i = 0; i < us * 8; i++) {
__NOP();
}
}
void init_gpio() {
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = TRIG_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(TRIG_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = ECHO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(ECHO_PORT, &GPIO_InitStructure);
}
float measure_distance() {
uint32_t start_time, end_time;
float distance;
GPIO_ResetBits(TRIG_PORT, TRIG_PIN);
delay_us(2);
GPIO_SetBits(TRIG_PORT, TRIG_PIN);
delay_us(10);
GPIO_ResetBits(TRIG_PORT, TRIG_PIN);
while (GPIO_ReadInputDataBit(ECHO_PORT, ECHO_PIN) == RESET);
start_time = TIM2->CNT;
while (GPIO_ReadInputDataBit(ECHO_PORT, ECHO_PIN) == SET);
end_time = TIM2->CNT;
distance = (float)(end_time - start_time) / 58.0f;
return distance;
}
int main() {
init_gpio();
while (1) {
float distance = measure_distance();
// do something with distance
}
}
请注意,这只是一个简单的示例代码,您需要根据您的具体应用程序进行修改和调整。
keil5写stm32f103c8t6使用超声波的代码
非常感谢您的提问。以下是使用Keil5编写STM32F103C8T6超声波代码的示例:
#include "stm32f10x.h"
#include "delay.h"
#include "usart.h"
#define TRIG_PIN GPIO_Pin_0
#define ECHO_PIN GPIO_Pin_1
#define TRIG_PORT GPIOA
#define ECHO_PORT GPIOA
void TIM2_Init(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
TIM_TimeBaseStructure.TIM_Prescaler = 72 - 1;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_Cmd(TIM2, ENABLE);
}
void Ultrasonic_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = TRIG_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(TRIG_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = ECHO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(ECHO_PORT, &GPIO_InitStructure);
}
float Ultrasonic_GetDistance(void)
{
uint32_t start, end;
float distance;
GPIO_ResetBits(TRIG_PORT, TRIG_PIN);
delay_us(2);
GPIO_SetBits(TRIG_PORT, TRIG_PIN);
delay_us(10);
GPIO_ResetBits(TRIG_PORT, TRIG_PIN);
while (GPIO_ReadInputDataBit(ECHO_PORT, ECHO_PIN) == RESET);
start = TIM_GetCounter(TIM2);
while (GPIO_ReadInputDataBit(ECHO_PORT, ECHO_PIN) != RESET);
end = TIM_GetCounter(TIM2);
distance = (float)(end - start) * 0.017;
return distance;
}
int main(void)
{
float distance;
SystemInit();
delay_init();
USART1_Init();
Ultrasonic_Init();
TIM2_Init();
while (1)
{
distance = Ultrasonic_GetDistance();
printf("Distance: %.2f cm\r\n", distance);
delay_ms(500);
}
}
希望这可以帮助您!