Created
January 20, 2016 15:50
-
-
Save trollcop/970a1fc6602b8bf6acc7 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// ADC driver assumes all the GPIO was already placed in 'AIN' mode | |
DMA_DeInit(DMA1_Channel1); | |
dma.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR; | |
dma.DMA_MemoryBaseAddr = (uint32_t)adcValues; | |
dma.DMA_DIR = DMA_DIR_PeripheralSRC; | |
dma.DMA_BufferSize = numChannels; | |
dma.DMA_PeripheralInc = DMA_PeripheralInc_Disable; | |
dma.DMA_MemoryInc = numChannels > 1 ? DMA_MemoryInc_Enable : DMA_MemoryInc_Disable; | |
dma.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; | |
dma.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; | |
dma.DMA_Mode = DMA_Mode_Circular; | |
dma.DMA_Priority = DMA_Priority_High; | |
dma.DMA_M2M = DMA_M2M_Disable; | |
DMA_Init(DMA1_Channel1, &dma); | |
DMA_Cmd(DMA1_Channel1, ENABLE); | |
adc.ADC_Mode = ADC_Mode_Independent; | |
adc.ADC_ScanConvMode = numChannels > 1 ? ENABLE : DISABLE; | |
adc.ADC_ContinuousConvMode = ENABLE; | |
adc.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; | |
adc.ADC_DataAlign = ADC_DataAlign_Right; | |
adc.ADC_NbrOfChannel = numChannels; | |
ADC_Init(ADC1, &adc); | |
// Configure ADC channels. Skip if channel is zero, means can't use PA0, but OK for this situation. | |
for (i = 0; i < ADC_CHANNEL_MAX; i++) | |
if (adcConfig[i].adcChannel > 0) | |
ADC_RegularChannelConfig(ADC1, adcConfig[i].adcChannel, rank++, ADC_SampleTime_239Cycles5); | |
ADC_DMACmd(ADC1, ENABLE); | |
ADC_Cmd(ADC1, ENABLE); | |
// Calibrate ADC | |
ADC_ResetCalibration(ADC1); | |
while (ADC_GetResetCalibrationStatus(ADC1)); | |
ADC_StartCalibration(ADC1); | |
while (ADC_GetCalibrationStatus(ADC1)); | |
// Fire off ADC | |
ADC_SoftwareStartConvCmd(ADC1, ENABLE); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment