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megahercas6
megahercas6
Associate III
April 28, 2017
Solved

SDIO IRQ does not work with GPIO interrupt

  • April 28, 2017
  • 7 replies
  • 1435 views
Posted on April 28, 2017 at 20:51

Hello, writing support library for my dev board, and i run into the problem.

I have simple txt file generated by Print_SD() function.

If this function is called from mains, it does produce TEST.TXT file, no problems

But if i map this function to GPIO interrupt, and call Print_SD() function from IRQ program, it simply hangs. It looks like it is preventing functions to be executed:

void SDIO_IRQHandler(void);

void SD_SDIO_DMA_IRQHANDLER(void);

How can i fix this ? SDIO does have higher priority, so why it should hang ?

void NVIC_Config(void) //SDIO

{

  NVIC_InitTypeDef NVIC_InitStructure;

  /* Configure the NVIC Preemption Priority Bits */

  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

  NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

  NVIC_InitStructure.NVIC_IRQChannel = SD_SDIO_DMA_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;

  NVIC_Init(&NVIC_InitStructure);  

}

void Button_IRQ_Config(void)

{

  /* SW1 PJ5 | SW2 PB10 */

 

  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;

  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;  

  EXTI_InitStructure.EXTI_LineCmd = ENABLE;

 

  EXTI_InitStructure.EXTI_Line = EXTI_Line5;

  EXTI_Init(&EXTI_InitStructure);

  EXTI_InitStructure.EXTI_Line = EXTI_Line10;

  EXTI_Init(&EXTI_InitStructure);

 

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0xF;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0xF;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

 

  NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;

  NVIC_Init(&NVIC_InitStructure);

 

  NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;

  NVIC_Init(&NVIC_InitStructure);

}

#ftfs #sdio #fat32 #irq #gpio
This topic has been closed for replies.
Best answer by Tesla DeLorean
Posted on April 28, 2017 at 21:34

With 

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); or something more appropriate?

7 replies

Tesla DeLorean
Tesla DeLorean
Guru
April 28, 2017
Posted on April 28, 2017 at 21:03

Unless I'm mistaken you've selected one bit for premption level, and you only have 4 bits total to work with. Setting 0xF/0xF is counter productive. Select a 2/2-bit split, and configure the 'don't care' interrupt with 0x3/0x3

Writing data to the SD from an interrupt is probably something best avoided, it will block for a long while, buffer the data, and write in a worker thread, so you can serialize access to FatFs and SDIO.

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megahercas6
megahercas6Author
Associate III
April 28, 2017
Posted on April 28, 2017 at 21:22

Hi,

I try to run with different values, but did not helped, try one higher, one lower, Other way around, same, it is still hanging...
Tesla DeLorean
Tesla DeLoreanBest answer
Guru
April 28, 2017
Posted on April 28, 2017 at 21:34

With 

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); or something more appropriate?

Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
megahercas6
megahercas6Author
Associate III
April 28, 2017
Posted on April 28, 2017 at 21:37

Hey, it did the trick, i was only changing sub- priority 

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);  //placed before GPIO NVIC config
David Henretty
David Henretty
Visitor II
July 31, 2017
Posted on July 31, 2017 at 16:17

Hi,

Sorry to 'piggyback' on this question but where can I find the implementation of NVIC_PriorityGroupConfig() and the definition of NVIC_PriorityGroup_4 ?

The FreeRTOS website states that this call is required when using the STM32 Driver Library with FreeRTOS but I cannot find it in either the Driver Library or the CMSIS code that is generated when creating a project using STM32CubeMX. Reference is, however, made to it from stm32f7xx_hal_cortex.c in the header documentation for the function HAL_NVIC_EnableIRQ().

Is this no longer required on STM32F7 and only required for M3/M4 ?

Any clarification would be appreciated.

David

waclawek.jan
waclawek.jan
Super User
July 31, 2017
Posted on July 31, 2017 at 17:05

NVIC_PriorityGroupConfig() is the SPL's version of CMSIS's standard NVIC_SetPriorityGrouping(). Cube has another one, HAL_NVIC_SetPriorityGrouping().

JW

David Henretty
David Henretty
Visitor II
July 31, 2017
Posted on July 31, 2017 at 18:18

Thanks Jan !

With that pointer, I was able to find NVIC_PRIORITYGROUP_4 too.

I should have searched without case sensitivity on !!!

David

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