Hier der Code, wie ich es für ADC3 getriggert durch Timer 3 gemacht
habe. Vergiss nicht die Clocks einzuschalten und den DMA Interrupt zu
konfigurieren.
void init_ADC(void)
{
#define ADC1_DR_Address ((u32)0x4001244C)
#define ADC3_DR_Address ((u32)0x40013C4C)
DMA_InitTypeDef DMA_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
/* TIM3CC1 configuration
------------------------------------------------------*/
/* Time Base configuration*/
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = 36000;
TIM_TimeBaseStructure.TIM_Prescaler = 0x1;
TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0x3F;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
ADC_buf_wr_ptr = ADC_buf_A;
ADC_buf_rd_ptr = ADC_buf_B;
DevStatus.TCmux =0;
DevStatus.num_avg=0;
//Mbox ADC3 DMA
DMA_DeInit(DMA2_Channel5);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC3_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)ADC_buf_wr_ptr;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 12;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize =
DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA2_Channel5, &DMA_InitStructure);
DMA_ITConfig(DMA2_Channel5, DMA_IT_TC, ENABLE);
DMA_Cmd(DMA2_Channel1, DISABLE);
DMA_Cmd(DMA2_Channel2, DISABLE);
DMA_Cmd(DMA2_Channel3, DISABLE);
DMA_Cmd(DMA2_Channel4, DISABLE);
DMA_Cmd(DMA2_Channel5, ENABLE);
/* ADC3 configuration
------------------------------------------------------*/
ADC_DeInit( ADC3);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
// ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T3_CC1;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 12;
ADC_Init(ADC3, &ADC_InitStructure);
/* ADC3 regular channel configuration */
ADC_RegularChannelConfig(ADC3, ADC_Channel_4, 1,
ADC_SampleTime_239Cycles5);//AIN_T_KK
ADC_RegularChannelConfig(ADC3, ADC_Channel_7, 2,
ADC_SampleTime_239Cycles5);//AIN420_1
ADC_RegularChannelConfig(ADC3, ADC_Channel_8, 3,
ADC_SampleTime_239Cycles5);//AIN420_2
ADC_RegularChannelConfig(ADC3, ADC_Channel_10, 4,
ADC_SampleTime_239Cycles5);//AIN420_3
ADC_RegularChannelConfig(ADC3, ADC_Channel_11, 5,
ADC_SampleTime_239Cycles5);//AIN420_4
ADC_RegularChannelConfig(ADC3, ADC_Channel_12, 6,
ADC_SampleTime_239Cycles5);//AIN420_5
ADC_RegularChannelConfig(ADC3, ADC_Channel_13, 7,
ADC_SampleTime_239Cycles5);//AIN420_6
ADC_RegularChannelConfig(ADC3, ADC_Channel_5, 8,
ADC_SampleTime_239Cycles5);//AIN_T_TC1
ADC_RegularChannelConfig(ADC3, ADC_Channel_6, 9,
ADC_SampleTime_239Cycles5);//AIN_T_TC2
ADC_RegularChannelConfig(ADC3, ADC_Channel_0, 10,
ADC_SampleTime_239Cycles5);//AIN_T_TC3
ADC_RegularChannelConfig(ADC3, ADC_Channel_1, 11,
ADC_SampleTime_239Cycles5);//AIN_T_TC4
ADC_RegularChannelConfig(ADC3, ADC_Channel_3, 12,
ADC_SampleTime_239Cycles5);//AIN_T_TC5
//Init TC MUX
CLR_TC1_A0;
CLR_TC2_A0;
CLR_TC1_A1;
CLR_TC2_A1;
DevStatus.TCmux=0;
/* Enable ADC3 DMA */
ADC_DMACmd(ADC3, ENABLE);
/* Enable ADC3 */
ADC_Cmd(ADC3, ENABLE);
/* Enable ADC1 reset calibaration register */
ADC_ResetCalibration(ADC3);
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC3));
/* Start ADC1 calibaration */
ADC_StartCalibration(ADC3);
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC3));
/* Enable ADC1 reset calibaration register */
TIM_Cmd(TIM3, ENABLE);//ADC startet noch nicht, erst durch Ext. Trigger
command
}