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Adding clear on first trigger of TIM #5

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Adding clear on first trigger of TIM #5

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e43838e
Adding clear on first trigger of TIM
burche1 Oct 11, 2018
cb87b10
Adding project of parallel tasks
burche1 Oct 11, 2018
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29 changes: 19 additions & 10 deletions Example_TIM_CLK/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,7 @@ void TIM4_IRQHandler(void)
{
if (TIM_GetITStatus(TIM4, TIM_IT_Update) != RESET)
{
// ����'������ ������� ������. ���� ����� �� �������, ���� ������� ����������� ����� �������� ����
// Îáîâ'ÿçêîâî ñêèäàºìî ïðàïîð. ßêùî öüîãî íå çðîáèòè, ï³ñëÿ îáðîáêè ïåðåðèâàííÿ çíîâó ïîïàäåìî ñþäè
TIM_ClearITPendingBit(TIM4, TIM_IT_Update);
GPIOC->ODR ^= GPIO_Pin_13;
}
Expand All @@ -77,17 +77,26 @@ int main(void)
TIM_TimeBaseInitTypeDef TIMER_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); // ������� ���������� ������� TIM4
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); // Âìèêàºìî òàêòóâàííÿ òàéìåðà TIM4

TIM_TimeBaseStructInit(&TIMER_InitStructure);
TIMER_InitStructure.TIM_CounterMode = TIM_CounterMode_Up; // ����� �������
TIMER_InitStructure.TIM_Prescaler = 8000; // �������� ������� ��� �������
// ����� �� ����������� �� ����������� ��������� RCC_HCLKConfig( RCC_SYSCLK_Div1); RCC_PCLK1Config(RCC_HCLK_Div1);
// � ������ ������� ������ = RCC_SYSCLK_Div1, ����� �� ��������� ������� �������� ������� ����������� ������ (8���)
TIMER_InitStructure.TIM_Period = 500; // �����, ����� ���� ���������� ����������� �� ������������ // F=8000000/8000/500 = 2 ����/���.
TIMER_InitStructure.TIM_CounterMode = TIM_CounterMode_Up; // Ðåæèì ðàõóíêó
TIMER_InitStructure.TIM_Prescaler = 8000; // Ïîä³ëþâà÷ ÷àñòîòè äëÿ òàéìåðà
// Òðåáà ùå âðàõîâóâàòè ÿê íàëàøòîâàí³ ïîä³ëþâà÷³ RCC_HCLKConfig( RCC_SYSCLK_Div1); RCC_PCLK1Config(RCC_HCLK_Div1);
// Ó íàøîìó âèïàäêó îáèäâà = RCC_SYSCLK_Div1, òîáòî äî ïîä³ëþâà÷à òàéìåðà äîõîäèòü ÷àñòîòà çîâí³øíüîãî êâàðöó (8ÌÃö)
TIMER_InitStructure.TIM_Period = 500; // Ïåð³îä, ÷åðåç ÿêèé âèêîíóºòüñÿ ïåðåðèâàííÿ ïî ïåðåïîâíåííþ // F=8000000/8000/500 = 2 ðàçè/ñåê.
TIM_TimeBaseInit(TIM4, &TIMER_InitStructure);
TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE); // ������� ����������� �� ������������ �������
TIM_Cmd(TIM4, ENABLE);// ������� ������

/*
This next line needs to be put here!!!
That's why the TIM_TimeBaseInit(TIM2, &TIMER_InitStructure); line sets the UIF flag
We are clearing it!!!
*/

TIM_ClearITPendingBit(TIM2,TIM_IT_Update);

TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE); // Âìèêàºìî ïåðåðèâàííÿ ïî ïåðåïîâíåííþ òàéìåðà
TIM_Cmd(TIM4, ENABLE);// Âìèêàºìî òàéìåð

/* NVIC Configuration */
/* Enable the TIM4_IRQn Interrupt */
Expand All @@ -99,6 +108,6 @@ int main(void)

while(1)
{
// � ��������� ���� ������ �� ��� ����������.
// Ó ãîëîâíîìó öèêë³ ðîáèìî ùî íàì çàìàíåòüñÿ.
}
}
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