写一段程序,使stm32f405每秒钟收集50组数据,并采集片上时间
时间: 2024-04-14 21:27:44 浏览: 8
Sure, here's a sample code that collects 50 sets of data per second and captures the on-chip time on STM32F405:
```c
#include "stm32f4xx.h"
#include <stdio.h>
volatile uint32_t ticks = 0;
void SysTick_Handler(void) {
ticks++;
}
void configureSysTick(void) {
SystemCoreClockUpdate();
SysTick_Config(SystemCoreClock / 1000); // Generate interrupt every 1ms
}
void configureGPIO(void) {
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStruct);
}
void configureADC(void) {
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
ADC_InitTypeDef ADC_InitStruct;
ADC_InitStruct.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStruct.ADC_ScanConvMode = DISABLE;
ADC_InitStruct.ADC_ContinuousConvMode = ENABLE;
ADC_InitStruct.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStruct.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStruct.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStruct);
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_3Cycles);
ADC_Cmd(ADC1, ENABLE);
ADC_SoftwareStartConv(ADC1);
}
uint32_t getMilliseconds(void) {
return ticks;
}
int main(void) {
configureSysTick();
configureGPIO();
configureADC();
uint32_t startMillis = getMilliseconds();
while (1) {
if ((getMilliseconds() - startMillis) >= 1000) {
startMillis = getMilliseconds();
for (int i = 0; i < 50; i++) {
while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);
uint16_t adcValue = ADC_GetConversionValue(ADC1);
printf("Data: %d, Time: %d ms\n", adcValue, startMillis);
}
}
}
}
```
In this code, we are using the SysTick timer to generate an interrupt every 1 millisecond. Inside the interrupt handler, we increment a `ticks` variable, which keeps track of the elapsed milliseconds.
The `configureSysTick()` function sets up the SysTick timer, and the `configureGPIO()` and `configureADC()` functions configure the necessary GPIO pins and ADC for data collection.
In the main loop, we periodically check if 1 second has elapsed using the `getMilliseconds()` function. If it has, we collect 50 sets of data from the ADC and print them along with the on-chip time captured using `startMillis`.
Please note that this is just a sample code to give you an idea of how you can achieve the desired functionality. You may need to modify it based on your specific requirements and hardware setup.