Not working: \STM32Cube_FW_F4_V1.1.0\Projects\STM32F429I-Discovery\Examples\ADC\ADC_RegularConversion_DMA

Linda · ‎2014-06-13

Posted on June 13, 2014 at 17:43

Hi,

I copy \STM32Cube_FW_F4_V1.1.0\Projects\STM32F429I-Discovery\Examples\ADC\ADC_RegularConversion_DMA to following location:

\STM32Cube_FW_F4_V1.1.0\Projects\STM32F429I-Discovery\Demonstrations\Modules

The ADC is not working.

Then I change ADC3 channel 8 to ADC2 channel 13, PF10 to PC3, by change the main.h:

~~~~~~~~~~~~~~~~~~~~~~~

/* Definition for ADCx clock resources */

&sharpdefine ADCx ADC3

&sharpdefine ADCx_CLK_ENABLE() __ADC3_CLK_ENABLE()

&sharpdefine DMAx_CLK_ENABLE() __DMA2_CLK_ENABLE()

&sharpdefine ADCx_CHANNEL_GPIO_CLK_ENABLE() __GPIOF_CLK_ENABLE()

&sharpdefine ADCx_FORCE_RESET() __ADC_FORCE_RESET()

&sharpdefine ADCx_RELEASE_RESET() __ADC_RELEASE_RESET()

/* Definition for ADCx Channel Pin */

&sharpdefine ADCx_CHANNEL_PIN GPIO_PIN_10

&sharpdefine ADCx_CHANNEL_GPIO_PORT GPIOF

/* Definition for ADCx's Channel */

&sharpdefine ADCx_CHANNEL ADC_CHANNEL_8

/* Definition for ADCx's DMA */

&sharpdefine ADCx_DMA_CHANNEL DMA_CHANNEL_2

&sharpdefine ADCx_DMA_STREAM DMA2_Stream0

/* Definition for ADCx's NVIC */

&sharpdefine ADCx_DMA_IRQn DMA2_Stream0_IRQn

&sharpdefine ADCx_DMA_IRQHandler DMA2_Stream0_IRQHandler

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Change to:

~~~~~~~~~~~~~~~~~~~

/* Definition for ADCx clock resources */

&sharpdefine ADCx ADC2

&sharpdefine ADCx_CLK_ENABLE() __ADC2_CLK_ENABLE()

&sharpdefine DMAx_CLK_ENABLE() __DMA2_CLK_ENABLE()

&sharpdefine ADCx_CHANNEL_GPIO_CLK_ENABLE() __GPIOC_CLK_ENABLE()

&sharpdefine ADCx_FORCE_RESET() __ADC_FORCE_RESET()

&sharpdefine ADCx_RELEASE_RESET() __ADC_RELEASE_RESET()

/* Definition for ADCx Channel Pin */

&sharpdefine ADCx_CHANNEL_PIN GPIO_PIN_3

&sharpdefine ADCx_CHANNEL_GPIO_PORT GPIOC

/* Definition for ADCx's Channel */

&sharpdefine ADCx_CHANNEL ADC_CHANNEL_13

/* Definition for ADCx's DMA */

&sharpdefine ADCx_DMA_CHANNEL DMA_CHANNEL_2

&sharpdefine ADCx_DMA_STREAM DMA2_Stream0

/* Definition for ADCx's NVIC */

&sharpdefine ADCx_DMA_IRQn DMA2_Stream0_IRQn

&sharpdefine ADCx_DMA_IRQHandler DMA2_Stream0_IRQHandler

~~~~~~~~~~~~~~~~~~~~~~~~

It is still not working,

Please help.

Thanks a lot

#lmgtfy:-stm32-resources #whiskey-tango-foxtrot

raptorhal2 · ‎2014-06-13

Posted on June 13, 2014 at 21:57

ADC2 is on your choice of stream 2 or 3, not stream 0. See the DMA Request Mapping Table in Section 10.3.3 of the reference manual.

Cheers, Hal

Linda · ‎2014-06-13

Posted on June 14, 2014 at 00:02

Thanks Baird.

But which reference manual? I don't have it. Could you please send me a link or the manual?

Thanks a lot.

Tesla DeLorean · ‎2014-06-13

Posted on June 14, 2014 at 00:30

But which reference manual? I don't have it. Could you please send me a link or the manual?

The one for YOUR part?

http://www.google.com/search?q=Reference+Manual+STM32F429

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/reference_manual/DM00031020.pdf

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Linda · ‎2014-06-13

Posted on June 14, 2014 at 01:58

Thanks clive1!!

Linda · ‎2014-06-14

Posted on June 14, 2014 at 21:30

New Problem comes out:

program do not respone, after I push stop in debugger, it stop at B:

SPI4_IRQHandler

SPI5_IRQHandler

SPI6_IRQHandler

SAI1_IRQHandler

LTDC_IRQHandler

LTDC_ER_IRQHandler

DMA2D_IRQHandler

B .

ENDP

ALIGN

;*******************************************************************************

; User Stack and Heap initialization

;**************************************************

Tesla DeLorean · ‎2014-06-14

Posted on June 15, 2014 at 00:51

I have practically no visibility into your code, I will guess that you haven't renamed and corrected your IRQ handler for the different stream, or enabled in the NVIC. The place it is ending up is where unhandled interrupts go to die.

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raptorhal2 · ‎2014-06-14

Posted on June 15, 2014 at 02:22

Did you use the same interrupt handler file as the example ? It doesn't have the other peripheral handlers you listed here.

Try stepping through the code to find the departure line for the errant interrupt.

Cheers, Hal

Linda · ‎2014-06-15

Posted on June 15, 2014 at 10:32

My an other try is: do not copy this project to other place, keep in the same folder(\STM32Cube_FW_F4_V1.1.0\Projects\STM32F429I-Discovery\Examples\ADC\ADC_RegularConversion_DMA), I just change the ADC to other pin PC3 (instead of PF10), the program doesn't give a correct converting. The main.h is:

~~~~~~~~~~~~~~

/* Definition for ADCx clock resources */

#define ADCx ADC3

#define ADCx_CLK_ENABLE() __ADC3_CLK_ENABLE()

#define DMAx_CLK_ENABLE() __DMA2_CLK_ENABLE()

#define ADCx_CHANNEL_GPIO_CLK_ENABLE() __GPIOC_CLK_ENABLE()

#define ADCx_FORCE_RESET() __ADC_FORCE_RESET()

#define ADCx_RELEASE_RESET() __ADC_RELEASE_RESET()

/* Definition for ADCx Channel Pin */

#define ADCx_CHANNEL_PIN GPIO_PIN_3

#define ADCx_CHANNEL_GPIO_PORT GPIOC

/* Definition for ADCx's Channel */

#define ADCx_CHANNEL ADC_CHANNEL_8

/* Definition for ADCx's DMA */

#define ADCx_DMA_CHANNEL DMA_CHANNEL_2

#define ADCx_DMA_STREAM DMA2_Stream0

/* Definition for ADCx's NVIC */

#define ADCx_DMA_IRQn DMA2_Stream0_IRQn

#define ADCx_DMA_IRQHandler DMA2_Stream0_IRQHandler

~~~~~~~~~~~~~~~

How to fix this problem ?

Thanks a lot

Tesla DeLorean · ‎2014-06-15

Posted on June 15, 2014 at 17:29

Ok, so it's not crashing now, but PC3 (ADC123_IN13) on the ADC3 doesn't seem to be reading the right value?

So important information to impart would be:

What is the nature of the signal? Source, Impedance, Static or Oscillating

What is the voltage?

What is the actual 12-bit measurement/reading from the STM32?

ADC_CHANNEL_8 ?? PC3 Will be Channel 13 !!

The

http://www.st.com/web/en/resource/technical/document/datasheet/DM00071990.pdf

for you part describes the pins and peripheral / adc associations.

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