In microcontroller design, to ensure specific functions are realized, many electronic engineers equip delay functions. However, many beginners in electronics do not understand the purpose of these delay functions and may not even know how to write them. This article will list the delay functions for microcontrollers, hoping to assist everyone.
Generally speaking, a microcontroller delay function refers to a function used to implement a certain time delay in the microcontroller program. Such functions are very useful in many applications, such as LED blinking, debouncing buttons, and initializing timers.
Below is a simple delay function code for microcontrollers, using C language as an example:
#include
#include
// Define delay function
void delay(int milliseconds)
{
clock_t start_time = clock(); // Get start time
while (clock() < start_time + milliseconds); // Wait for time to pass
}
int main()
{
int i;
for (i = 0; i < 10; i++)
{
printf(“Delay %d ms\n”, i);
delay(i); // Call delay function to achieve different time delays
}
return 0;
}
In the above code, the delay() function is used to implement the delay. The parameter milliseconds indicates the time to delay, measured in milliseconds. The function uses clock() to get the current clock time and waits in a loop until the specified milliseconds have passed. In the main function, we call the delay() function to achieve different time delays and output the corresponding information.
It is important to note that in practical applications, different microcontroller systems may use different hardware timers or software timers to achieve delays. Therefore, the specific implementation of the delay function may vary depending on the model of the microcontroller and the development environment. In actual development, it is necessary to write the corresponding delay function code according to the specific microcontroller model and development environment.
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