Hello. I am learning rtos and using led blink example. Here is my code: Main:
#include "RTE_Components.h"
#include "cmsis_os2.h"
#include "stm32f4xx_rcc.h" // Keil::Device:StdPeriph Drivers:RCC
#include "STM32F4XX.h"
#include "Threads.h"
#ifdef RTE_Compiler_EventRecorder
#include "EventRecorder.h"
#endif
void app_main (void *argument) {
for (;;) {
Thread1_Sus();
}
}
struct message {
uint8_t start;
uint8_t function;
uint8_t data1;
uint8_t data2;
uint8_t checksum;
};
int main (void) {
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
GPIO_InitTypeDef GPIO_LED;
GPIO_LED.GPIO_Pin = GPIO_Pin_15 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14;
GPIO_LED.GPIO_Mode= GPIO_Mode_OUT;
GPIO_LED.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_LED.GPIO_OType = GPIO_OType_PP;
GPIO_Init(GPIOD , &GPIO_LED);
// System Initialization
SystemCoreClockUpdate();
#ifdef RTE_Compiler_EventRecorder
// Initialize and start Event Recorder
EventRecorderInitialize(EventRecordError, 1U);
#endif
// ...
osKernelInitialize(); // Initialize CMSIS-RTOS
osThreadNew(app_main, NULL, NULL); // Create application main thread
Init_Thread1();
Init_Thread2();
Init_Thread3();
Init_Thread4();
osKernelStart(); // Start thread execution
for (;;) {}
}
thread1.c:
#include "Threads.h"
osThreadId_t tid_Thread1;
int Init_Thread1 (void) {
tid_Thread1 = osThreadNew (Thread1, NULL, NULL);
if (!tid_Thread1) return(-1);
return(0);
}
void Thread1_Sus(void)
{
osThreadSuspend (tid_Thread1);
}
void Thread1_Res(void)
{
osThreadResume (tid_Thread1);
}
void Thread1 (void *argument) {
while (1) {
GPIO_ToggleBits(GPIOD , GPIO_Pin_15);
osDelay (1000);
osThreadYield (); // suspend thread
}
}
Thread 2 , 3 , 4 are identical to thread1 only leds and durations are different.
My issue is , I use "osKernelGetTickFreq" and it returns "1000" (and the value of "osDelay" is "1000" as well ) but still the duration of the led on my board is close to 3 seconds. What can this be cauesed by and how can i fix it ?
