Hello guys, I am newbie here. I would like to make a programme that take from 2 channels ADC and via DMA store them in an array and then shows flags HT and TC.Do u have any example? How can I set an input of 600 khz?
It's my first programme in keil. i used to programme in C and I am not yet graduate still student. My programme should be based on this
/* Includes ------------------------------------------------------------------*/ #include "stm32f10x.h" /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ #define ADC1_DR_Address ((uint32_t)0x4001244C)
/* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ ADC_InitTypeDef ADC_InitStructure; DMA_InitTypeDef DMA_InitStructure; __IO uint32_t ADC_DualConvertedValueTab[200];
/* Private function prototypes -----------------------------------------------*/ void RCC_Configuration(void); void GPIO_Configuration(void);
/* Private functions ---------------------------------------------------------*/
/** * @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_stm32f10x_xx.s) before to branch to application main. To reconfigure the default setting of SystemInit() function, refer to system_stm32f10x.c file */
/* System clocks configuration ---------------------------------------------*/ RCC_Configuration();
/* GPIO configuration ------------------------------------------------------*/ GPIO_Configuration();
/* DMA1 channel1 configuration ----------------------------------------------*/ DMA_DeInit(DMA1_Channel1); DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_Address; DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_DualConvertedValueTab; DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; DMA_InitStructure.DMA_BufferSize = 16; DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word; DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word; DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; DMA_InitStructure.DMA_Priority = DMA_Priority_High; DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; DMA_Init(DMA1_Channel1, &DMA_InitStructure); /* Enable DMA1 Channel1 */ DMA_Cmd(DMA1_Channel1, ENABLE);
/* ADC1 configuration ------------------------------------------------------*/ ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult; ADC_InitStructure.ADC_ScanConvMode = ENABLE; ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; ADC_InitStructure.ADC_NbrOfChannel = 2; ADC_Init(ADC1, &ADC_InitStructure); /* ADC1 regular channels configuration */ ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_239Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_17, 2, ADC_SampleTime_239Cycles5); /* Enable ADC1 DMA */ ADC_DMACmd(ADC1, ENABLE);
/* ADC2 configuration ------------------------------------------------------*/ ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult; ADC_InitStructure.ADC_ScanConvMode = ENABLE; ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; ADC_InitStructure.ADC_NbrOfChannel = 2; ADC_Init(ADC2, &ADC_InitStructure); /* ADC2 regular channels configuration */ ADC_RegularChannelConfig(ADC2, ADC_Channel_11, 1, ADC_SampleTime_239Cycles5); ADC_RegularChannelConfig(ADC2, ADC_Channel_12, 2, ADC_SampleTime_239Cycles5); /* Enable ADC2 external trigger conversion */ ADC_ExternalTrigConvCmd(ADC2, ENABLE);
/* Enable ADC1 */ ADC_Cmd(ADC1, ENABLE); /* Enable Vrefint channel17 */ ADC_TempSensorVrefintCmd(ENABLE);
/* Enable ADC1 reset calibration register */ ADC_ResetCalibration(ADC1); /* Check the end of ADC1 reset calibration register */ while(ADC_GetResetCalibrationStatus(ADC1));
/* Start ADC1 calibration */ ADC_StartCalibration(ADC1); /* Check the end of ADC1 calibration */ while(ADC_GetCalibrationStatus(ADC1));
/* Enable ADC2 */ ADC_Cmd(ADC2, ENABLE);
/* Enable ADC2 reset calibration register */ ADC_ResetCalibration(ADC2); /* Check the end of ADC2 reset calibration register */ while(ADC_GetResetCalibrationStatus(ADC2));
/* Start ADC2 calibration */ ADC_StartCalibration(ADC2); /* Check the end of ADC2 calibration */ while(ADC_GetCalibrationStatus(ADC2));
/* Start ADC1 Software Conversion */ ADC_SoftwareStartConvCmd(ADC1, ENABLE);
/* Test on DMA1 channel1 transfer complete flag */ while(!DMA_GetFlagStatus(DMA1_FLAG_TC1)); /* Clear DMA1 channel1 transfer complete flag */ DMA_ClearFlag(DMA1_FLAG_TC1); while (1) /* Test on DMA1 channel1 transfer half flag */ while (!DMA_GetFlagStatus (DMA1_FLAG_HT1)); /* Clear DMA1 channel1 transfer half flag */ DMA_ClearFlag (DMA2_FLAG_HT1) ; while (1) { } }
/** * @brief Configures the different system clocks. * @param None * @retval None */ void RCC_Configuration(void) { /* ADCCLK = PCLK2/4 */ RCC_ADCCLKConfig(RCC_PCLK2_Div4); /* Enable peripheral clocks ------------------------------------------------*/ /* Enable DMA1 clock */ RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
/* Enable ADC1, ADC2 and GPIOC clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_ADC2 | RCC_APB2Periph_GPIOC, ENABLE); }
/** * @brief Configures the different GPIO ports. * @param None * @retval None */ void GPIO_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure;
/* Configure PC.01, PC.02 and PC.04 (ADC Channel11, Channel12 and Channel14) as analog input ----------------------------------------------------------*/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_4; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_Init(GPIOC, &GPIO_InitStructure); }
#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****/
where I have added a HT flag still don't know if it is right. I should use an array of 200 for storing adc1 and adc2 from the respective channels c1 and c2 via dma. I will only debug in simulator,i don't have any board and micontroller yet. Please let me know if u want more specification about the project. Thanks a lot!