Posted on November 09, 2013 at 21:11
but the program does not stop never on the breakpoint at lines 80, 82 and 84 (ADC3ConvertedVoltage = ADC3ConvertedValue *3300/0xFFF; GPIOD->BSRRL = LED6_PIN; GPIOD->BSRRH = LED6_PIN;) but only at lines 81 and 83 (x=x+1; y=y+1;)
has someone already had a similar problem?and can give me suggestions?
thanks
if shoud to be help I have attached the main
Hi,
I bought a development board STM32F4 discovery. I wanted to try the debug and I modified the example ADC3_DMA in STM32F4-Discovery_FW_V1.1.0 in this mode:
but the program does not stop never on the breakpoint at lines 80, 82 and 84 (ADC3ConvertedVoltage = ADC3ConvertedValue *3300/0xFFF; GPIOD->BSRRL = LED6_PIN; GPIOD->BSRRH = LED6_PIN;) but only at lines 81 and 83 (x=x+1; y=y+1;)
has someone already had a similar problem?and can give me suggestions?
thanks
if shoud to be help I have attached the main
/**
******************************************************************************
* @file ADC3_DMA/main.c
* @author MCD Application Team
* @version V1.0.0
* @date 19-September-2011
* @brief Main program body
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <
h2
><
center
>© COPYRIGHT 2011 STMicroelectronics</
center
></
h2
>
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include ''stm32f4_discovery.h''
#include <
stdio.h
>
/** @addtogroup STM32F4_Discovery_Peripheral_Examples
* @{
*/
/** @addtogroup ADC_ADC3_DMA
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define ADC3_DR_ADDRESS ((uint32_t)0x4001224C)
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* You can monitor the converted value by adding the variable ''ADC3ConvertedValue''
to the debugger watch window */
__IO uint16_t ADC3ConvertedValue = 0;
__IO uint32_t ADC3ConvertedVoltage = 0;
int x;
int y;
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
void ADC3_CH12_DMA_Config(void);
void InizializzaPorta(void);
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/*!<
At
this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f4xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f4xx.c file
*/
/* ADC3 configuration *******************************************************/
/* - Enable peripheral clocks */
/* - DMA2_Stream0 channel2 configuration */
/* - Configure ADC Channel12 pin as analog input */
/* - Configure ADC3 Channel12 */
ADC3_CH12_DMA_Config();
/* Start ADC3 Software Conversion */
ADC_SoftwareStartConv(ADC3);
InizializzaPorta();
while (1)
{
/* convert the ADC value (from 0 to 0xFFF) to a voltage value (from 0V to 3.3V)*/
ADC3ConvertedVoltage
=
ADC3ConvertedValue
*3300/0xFFF;
y
=y+1;
GPIOD->BSRRL = LED6_PIN;
x=x+1;
GPIOD->BSRRH = LED6_PIN;
}
}
/**
* @brief ADC3 channel12 with DMA configuration
* @param None
* @retval None
*/
void InizializzaPorta(void)
{
GPIO_InitTypeDef NomePorta;
/* Abilito il segnale di clock della porta */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
/* Enable SYSCFG clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* Configura il pin della porta D numero 15 PD15 al quale é collegato il led */
NomePorta.GPIO_Mode = 0x01; // scrivo 0x01 nel registro MODER il che vuol dire porre il pin in output ---> NomePorta.GPIO_Mode = GPIO_Mode_OUT; vedi manuale STM32F4xxx.PDF
NomePorta.GPIO_OType =0x00; // scrivo 0x00 nel registro OTYPER il che vuol dire porre l'output in push pull (se scrivevamo 0x01 lo poneva in open drain) --->NomePorta.GPIO_OType =GPIO_OType_PP; vedi manuale STM32F4xxx.PDF
NomePorta.GPIO_Pin = ((uint16_t)0x8000);//GPIO_Pin_12; //non sostituisco con esadecimale per semplicità
NomePorta.GPIO_PuPd = 0x01; //Imposto il pin in pull up scrivendo nel registro NomePorta.GPIO_PuPd =GPIO_PuPd_UP
NomePorta.GPIO_Speed = 0x02; //Imposto la velocità del pin ----> NomePorta.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOD, &NomePorta); //Funzione che va a mettere i valori dei campi della struttura NomePorta che abbiamo definito nei registri elencati nei commenti precedenti
}
void ADC3_CH12_DMA_Config(void)
{
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
DMA_InitTypeDef DMA_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable ADC3, DMA2 and GPIO clocks ****************************************/
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2 | RCC_AHB1Periph_GPIOC, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC3, ENABLE);
/* DMA2 Stream0 channel0 configuration **************************************/
DMA_InitStructure.DMA_Channel = DMA_Channel_2;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC3_DR_ADDRESS;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADC3ConvertedValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = 1;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA2_Stream0, &DMA_InitStructure);
DMA_Cmd(DMA2_Stream0, ENABLE);
/* Configure ADC3 Channel12 pin as analog input ******************************/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* ADC Common Init **********************************************************/
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
/* ADC3 Init ****************************************************************/
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC3, &ADC_InitStructure);
/* ADC3 regular channel12 configuration *************************************/
ADC_RegularChannelConfig(ADC3, ADC_Channel_12, 1, ADC_SampleTime_3Cycles);
/* Enable DMA request after last transfer (Single-ADC mode) */
ADC_DMARequestAfterLastTransferCmd(ADC3, ENABLE);
/* Enable ADC3 DMA */
ADC_DMACmd(ADC3, ENABLE);
/* Enable ADC3 */
ADC_Cmd(ADC3, ENABLE);
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf(''Wrong parameters value: file %s on line %d\r\n'', file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
Posted on November 10, 2013 at 17:54
In order to see linear and simplified code flow you need to turn optimization off so that the compiler does not reorganize your code. Alternatively you can look at the disassembly window and the flow of the instructions generated, but don't always expect line level equivalence. Instead of breakpointing everything use the step in, step over, step out buttons.
