UM1561 datasheet(17/39 Pages) STMICROELECTRONICS

17 / 39 page

UM1561

Data sensing section for the closed loop control

Doc ID 023556 Rev 1

17/39

TIM_TimeBaseStructure.TIM_ClockDivision = 0;

TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_CenterAligned1;

TIM_TimeBaseStructure.TIM_RepetitionCounter = 1;

TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);

TIM_SelectOutputTrigger(TIM8, TIM_TRGOSource_Update);

}

where:

●

TIM_SelectOutputTrigger(TIM8, TIM_TRGOSource_Update);

is (Configures

the TIM8 as trigger for ADC1 and ADC2).

DS_DMA_Configuration(..):

The direct memory access (DMA1) peripheral is configured to store the information

acquired by the ADC in a buffer called the data register. It is a vector that includes all the I/O

information, for example AC line voltage, AC line current, DC bus voltage, DC panel current,

and DC panel voltage.

/*************************************************************************

* Function Name

: DS_DMA_Configuration

* Description

: Analog to digital converter configuration

* Input

: NONE

* Return

: None

*************************************************************************/

void DS_DMA_Configuration(void)

{

/* DMA1 channel1 configuration ----------------------------------------*/

DMA_DeInit(DMA1_Channel1);

DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;

DMA_InitStructure.DMA_MemoryBaseAddr =

(vu32)DataSensing.Init.DataRegister;

DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;

DMA_InitStructure.DMA_BufferSize = DataSensing.Init.RegisterSize;

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_Circular;

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);

/* Clear channel1 transfer complete flag */

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