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developer2
developer2
Senior
August 7, 2013
Solved

DMA issue - transfer error flag TEIF

  • August 7, 2013
  • 6 replies
  • 3083 views
Posted on August 07, 2013 at 18:55

Hi all,

i'm having issue with DMA on STM32F417, i have configuration DMA1_Stream1 is having trigger updates from TIM6_UP (Channel7),

i get after start TIM6 error TEIF1 :(

my source code was functional with configuration:

DMA2_Stream1 Channel7 + TIM8_UP :(

please could you review my sources: ?

#define ADC_READ_DMA_TIM_UP TIM6

#define ADC_READ_DMA DMA1_Stream1

static __IO uint8_t ADC_Buffer1[20002];

RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIM6, ENABLE);

RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_DMA1, ENABLE);

TIM_Cmd( ADC_READ_DMA_TIM_UP, DISABLE);

DMA_DeInit( ADC_READ_DMA );

DMA_InitTypeDef DMA_InitStructure;

DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;

DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;

DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;

DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;

DMA_InitStructure.DMA_Channel = DMA_Channel_7;

DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&GPIOE->IDR)+0;

DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)ADC_Buffer1;

DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;

DMA_InitStructure.DMA_BufferSize = 20000;

DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;

DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;

DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;

DMA_InitStructure.DMA_Priority = DMA_Priority_High; // VeryHigh

DMA_Init(ADC_READ_DMA, &DMA_InitStructure);

TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

TIM_TimeBaseStructure.TIM_Period=9;

TIM_TimeBaseStructure.TIM_Prescaler = 0x0000;

TIM_TimeBaseStructure.TIM_ClockDivision = 0;

TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;

TIM_TimeBaseInit( ADC_READ_DMA_TIM_UP, &TIM_TimeBaseStructure);

TIM_UpdateRequestConfig( ADC_READ_DMA_TIM_UP, TIM_UpdateSource_Regular );

TIM_DMACmd( ADC_READ_DMA_TIM_UP, TIM_DMA_Update, ENABLE);

DMA_ITConfig( ADC_READ_DMA, DMA_IT_TC, ENABLE);

DMA_Cmd( ADC_READ_DMA, ENABLE);

DMA_ClearFlag( ADC_READ_DMA, DMA_FLAG_TCIF1 | DMA_FLAG_TEIF1 );

USARTdebug_puthex_32bit( DMA1->LISR );

TIM_Cmd( ADC_READ_DMA_TIM_UP, ENABLE);

Delay(0xaff);

USARTdebug_puthex_32bit( DMA1->LISR );

USARTdebug_puthex_32bit( DMA_GetCurrDataCounter(ADC_READ_DMA) );

output is:

00000000 00000200 00004e1f

Thanks for all replies,

Kind regards,
    This topic has been closed for replies.
    Best answer by Tesla DeLorean
    Posted on April 23, 2018 at 17:18

    Jive should have a better way of closing out old threads, and provide a means to ask a related/linked question.

    Until then posters should pay attention to whether they are waking a zombie thread from 5 years ago when they randomly Google or find it via forum search.

    6 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    August 7, 2013
    Posted on August 07, 2013 at 19:01

    You'll probably want to be using DMA2 to transact with a peripheral on AHB1, which would be classified as a Memory-to-Memory

    Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
    developer2
    developer2Author
    Senior
    August 7, 2013
    Posted on August 07, 2013 at 19:05

    well, i need to use DMA1 for transfer GPIOE to memory,

    and DMA2 i will use for different purposes,

    is the DMA1 usable for my purpose ? do i have some mistake in initialization ?

    Tesla DeLorean
    Tesla DeLorean
    Guru
    August 7, 2013
    Posted on August 07, 2013 at 19:27

    DMA1 and DMA2 have multiple streams

    To rephrase, DMA1 talks between peripherals on APB1 and memory. It won't talk to peripherals on APB2 or AHB1 (GPIOE)

    AHB1, APB2 and Memory are classified as ''memory'', only DMA2 permits memory-to-memory transfers.
    Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
    Bill Finger
    Bill Finger
    Associate II
    September 19, 2017
    Posted on September 19, 2017 at 16:29

    This should be in the datasheet and Reference Manual.

    waclawek.jan
    waclawek.jan
    Super User
    September 19, 2017
    Posted on September 19, 2017 at 16:52

    Well, it is.

    0690X00000608I2QAI.png

    It's repeated as a footnote at the DMA block schematics in the DMA chapter.

    That GPIOs are on AHB1 is in Table1.

    Both facts can be seen from the block diagram in the DS, too.

    0690X00000608HyQAI.png

    JW

    developer2
    developer2Author
    Senior
    August 7, 2013
    Posted on August 07, 2013 at 19:38

    ohhh, :(

    i didn't catch that fact :(

    well my situation is that i need transferring A/D digital results on GPIOE as fast as possible and with roughly same periodicity, i mean delays between sampling of GPIOE,

    and i need to use USART6 as debug port and it's on DMA2 :(

    i'm affraid if i use DMA2_Stream1 for GPIOE -> buffer and DMA2_Stream6 for Buffer -> USART_TX i will get various delays between samples of A/D :(

    what is your opinion ?

    Tesla DeLorean
    Tesla DeLorean
    Guru
    August 7, 2013
    Posted on August 07, 2013 at 20:06

    what is your opinion ?

    You're going to get some degree of contention between the CPU, DMA1 and DMA2 against memory. Can you deal with a dozen or so cycles of jitter?

    Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
    developer2
    developer2Author
    Senior
    August 7, 2013
    Posted on August 07, 2013 at 20:39

    could you please explain the meaning of your question ?

    for me it's most important the delays between sampling of GPIOE,

    and speeds of other streams is not important,

    i don't sample GPIOE using CPU because i will not have time to process the data ...

    Dan Mackie
    Dan Mackie
    Associate III
    April 23, 2018
    Posted on April 23, 2018 at 15:56

    What resolution are you looking for, and over what duration?

    developer2
    developer2Author
    Senior
    April 23, 2018
    Posted on April 23, 2018 at 16:04

    Thanks to everybody for answers ,

    administrators: please close this thread, i consider this thread as unanswered and nobody attached new ideas or answers to my questions ...

    thread was started in previous version of forum where i didn't notice functionality of closing thread ...

    Kind regards

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