Question
EXTI0_1_IRQ and EXTI4_15_IRQ don't work independent ?
Posted on November 04, 2017 at 22:25
Hello everybody,
I use two interrupts in the STM32F051K4 MCU.
There are EXTI0_1_IRQ and EXTI4_15_ORQ.
With EXTI0 will be PA0 used (Hall sensor) and to EXTI4_15 are PB5, PB6, PB7 Pins (user keys) connected.
Both interrupts work independently very well, but wenn I try to use EXTI0 and EXTI4_15 together (any key will be pressed and EXTI4_15 ocurred) break EXTI0 to work.
My question is : can I use by STM32F051K4 different Ports for for different EXTI-Lines ? For example in my case I use PA0 for EXTI0_1 Interrupt and PB7, PB6, PB5 for EXTI4_15 Interrupt.
Thank you for your help!
.
Initialisation code listed below:
void exti_exti0_1Config(void)
{
/* Enable GPIOA clock */ // already done in gpioctrl.c
//RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
/* Enable SYSCFG clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* Configure PA0 */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Connect EXTI0 to pin Sensor Event*/
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource0);
/* Configure EXTI0 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line0;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI0 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0x2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void exti_exti4_15Config(void)
{
/* Enable GPIOB clock */
//RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
/* Enable SYSCFG clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* Configure PB7, PB6, PB5 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_6 | GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Connect EXTI7, 6, 5 Line to PB7, PB6, PB5 pin Sensor Event*/
//SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource7 | EXTI_PinSource6 | EXTI_PinSource5);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource7);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource6);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource5);
/* Configure EXTIx line */
EXTI_InitStructure.EXTI_Line = EXTI_Line7 | EXTI_Line6 | EXTI_Line5;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = EXTI4_15_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0x3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTI0_1_IRQHandler(void)
{
NVIC_DisableIRQ(EXTI0_1_IRQn);
// Hall1 signal
if(EXTI_GetITStatus(EXTI_Line0) != RESET)
{
/* Clear the EXTI line 5 pending bit */
EXTI_ClearITPendingBit(EXTI_Line0);
switchVar = ~switchVar; // just for debugging purpose
if(switchVar)
{
GPIOA->BSRR |= GPIO_Pin_12; // set green LED on
}
else
{
GPIOA->BRR |= GPIO_Pin_12; // set green LED on
}
}
// Hall2 signal
if(EXTI_GetITStatus(EXTI_Line1) != RESET)
{
/* Clear the EXTI line 6 pending bit */
EXTI_ClearITPendingBit(EXTI_Line1);
// To Do: clear blockade timer der auf ca. 180 - 200ms eingestellt ist
//sw_getSwCtrl()->flHall2Ev = 1;
}
NVIC_EnableIRQ(EXTI0_1_IRQn);
}
void EXTI4_15_IRQHandler(void)
{
NVIC_DisableIRQ(EXTI4_15_IRQn); // IRQ will bei in keyctrl.c Module enabled
if(EXTI_GetITStatus(EXTI_Line5) != RESET)
{
/* Clear the EXTI line 5 pending bit */
EXTI_ClearITPendingBit(EXTI_Line5);
// set key press flag as TRUE
key_getKeyCtrl()->biKeyPresRelInt = TRUE;
}
if(EXTI_GetITStatus(EXTI_Line6) != RESET)
{
/* Clear the EXTI line 6 pending bit */
EXTI_ClearITPendingBit(EXTI_Line6);
// set key press flag as TRUE
key_getKeyCtrl()->biKeyPresRelInt = TRUE;
}
if(EXTI_GetITStatus(EXTI_Line7) != RESET)
{
/* Clear the EXTI line 7 pending bit */
EXTI_ClearITPendingBit(EXTI_Line7);
// set key press flag as TRUE
key_getKeyCtrl()->biKeyPresRelInt = TRUE;
}
// IRQ will bei in keyctrl.c Module enabled
//NVIC_EnableIRQ(EXTI4_15_IRQn);
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