void adc_calibrate()
{
// Initialises clocks
CMU_ClockEnable(cmuClock_HFPER, true);
CMU_ClockEnable(cmuClock_ADC0, true);
//todo: use new calibration values
//todo: make adaptable for other ref voltages
uint32_t old_gain_calibration_value =
(DEVINFO->ADC0CAL0 & _DEVINFO_ADC0CAL0_1V25_GAIN_MASK)
>> _DEVINFO_ADC0CAL0_1V25_GAIN_SHIFT;
uint32_t old_offset_calibration_value =
(DEVINFO->ADC0CAL0 & _DEVINFO_ADC0CAL0_1V25_OFFSET_MASK)
>> _DEVINFO_ADC0CAL0_1V25_OFFSET_SHIFT;
//RTCDRV_Trigger(100, NULL);
uint32_t calibration_value = ADC_Calibration(ADC0, adcRef1V25);
uint32_t offset_calibration_value = (calibration_value & _ADC_CAL_SINGLEOFFSET_MASK) >> _ADC_CAL_SINGLEOFFSET_SHIFT;
uint32_t gain_calibration_value = (calibration_value & _ADC_CAL_SINGLEGAIN_MASK) >> _ADC_CAL_SINGLEGAIN_SHIFT;
log_print_stack_string(LOG_STACK_FWK, "ADC Calibration offset %d -> %d", old_offset_calibration_value, offset_calibration_value);
log_print_stack_string(LOG_STACK_FWK, "ADC Calibration gain %d -> %d", old_gain_calibration_value, gain_calibration_value);
}
/**
* @brief Configure ADC Configuration.
* @param None
* @retval None
*/
void ADC_OVERConfiguration(void)
{
/* Configure ADC ----------------------------------------------------------*/
ADC_InitPara ADC_InitStructure;
ADC_InitStructure.ADC_Mode_Scan = DISABLE ;
ADC_InitStructure.ADC_Mode_Continuous = DISABLE;
ADC_InitStructure.ADC_Trig_External = ADC_EXTERNAL_TRIGGER_MODE_NONE;
ADC_InitStructure.ADC_Data_Align = ADC_DATAALIGN_RIGHT;
ADC_InitStructure.ADC_Channel_Number = 1;
ADC_Init(&ADC_InitStructure);
/* ADC regular channels configuration */
ADC_RegularChannel_Config(ADC_CHANNEL_10, 1,ADC_SAMPLETIME_55POINT5);
ADC_OversamplingRatio_Config(ADC_OVERSAMPLING_RATIO_4X);
ADC_OversamplingShift_Config(ADC_OVERSAMPLING_SHIFT_NONE);
ADC_Oversampler_Enable(ENABLE);
/* Enable ADC */
ADC_Enable(ENABLE);
ADC_Calibration();
/* Start ADC Software Conversion */
ADC_SoftwareStartConv_Enable(ENABLE);
}
void adc_init(void)
{
DMA_InitPara DMA_InitStructure;
ADC_InitPara ADC_InitStructure;
RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_ADC1, ENABLE);
RCC_ADCCLKConfig(RCC_ADCCLK_APB2_DIV6);
RCC_AHBPeriphClock_Enable(RCC_AHBPERIPH_DMA1, ENABLE);
DMA_InitStructure.DMA_PeripheralBaseAddr = 0x4001244C;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adcarray;
DMA_InitStructure.DMA_DIR = DMA_DIR_PERIPHERALSRC;
DMA_InitStructure.DMA_BufferSize = 4;
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_CIRCULAR;
DMA_InitStructure.DMA_Priority = DMA_PRIORITY_HIGH;
DMA_InitStructure.DMA_MTOM = DMA_MEMTOMEM_DISABLE;
DMA_Init(DMA1_CHANNEL1, &DMA_InitStructure);
DMA_Enable(DMA1_CHANNEL1, ENABLE);
// ADC_DeInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode_Scan = ENABLE;
ADC_InitStructure.ADC_Mode_Continuous = ENABLE;
ADC_InitStructure.ADC_Trig_External = ADC_EXTERNAL_TRIGGER_MODE_NONE;
ADC_InitStructure.ADC_Data_Align = ADC_DATAALIGN_RIGHT;
ADC_InitStructure.ADC_Channel_Number = 4;
ADC_Init(&ADC_InitStructure);
// current?
ADC_RegularChannel_Config(ADC_CHANNEL_7, 1, ADC_SAMPLETIME_239POINT5);
// battery channel
ADC_RegularChannel_Config(ADC_CHANNEL_5, 2, ADC_SAMPLETIME_239POINT5);
ADC_RegularChannel_Config(ADC_CHANNEL_4, 3, ADC_SAMPLETIME_239POINT5);
ADC_RegularChannel_Config(ADC_CHANNEL_1, 4, ADC_SAMPLETIME_239POINT5);
ADC_DMA_Enable(ENABLE);
ADC_Enable(ENABLE);
ADC_Calibration();
ADC_SoftwareStartConv_Enable(ENABLE);
}
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/* Configure System clocks -----------------------------------------------*/
RCC_Configuration();
/* Configure GPIO ports --------------------------------------------------*/
GPIO_Configuration();
/* Configure DMA1 channel1 -----------------------------------------------*/
DMA_DeInit(DMA1_CHANNEL1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC_RDTR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADCConvertedValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PERIPHERALSRC;
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_MTOM = DMA_MEMTOMEM_DISABLE;
DMA_Init(DMA1_CHANNEL1, &DMA_InitStructure);
/* Enable DMA1 channel1 */
DMA_Enable(DMA1_CHANNEL1, ENABLE);
/* Configure ADC ---------------------------------------------------------*/
ADC_InitStructure.ADC_Mode_Scan = DISABLE;
ADC_InitStructure.ADC_Mode_Continuous = ENABLE;
ADC_InitStructure.ADC_Trig_External = ADC_EXTERNAL_TRIGGER_MODE_NONE;
ADC_InitStructure.ADC_Data_Align = ADC_DATAALIGN_RIGHT;
ADC_InitStructure.ADC_Channel_Number = 1;
ADC_Init(&ADC_InitStructure);
/* Configure ADC regular channelx */
ADC_RegularChannel_Config( BOARD_ADC_CHANNEL, 1, ADC_SAMPLETIME_239POINT5);
/* Enable ADC DMA */
ADC_DMA_Enable(ENABLE);
/* Enable ADC */
ADC_Enable(ENABLE);
ADC_Calibration();
/* Start ADC Software Conversion */
ADC_SoftwareStartConv_Enable(ENABLE);
while (1)
{
}
}
/**
* @brief Configure ADC_12B resolution.
* @param None
* @retval None
*/
void ADC_12BConfiguration(void)
{
/* Configure ADC ----------------------------------------------------------*/
ADC_InitStructure.ADC_Mode_Scan = DISABLE;
ADC_InitStructure.ADC_Mode_Continuous = DISABLE;
ADC_InitStructure.ADC_Trig_External = ADC_EXTERNAL_TRIGGER_MODE_NONE;
ADC_InitStructure.ADC_Data_Align = ADC_DATAALIGN_RIGHT;
ADC_InitStructure.ADC_Channel_Number = 1;
ADC_Init(&ADC_InitStructure);
/* Configure ADC regular channel10 */
ADC_RegularChannel_Config(ADC_CHANNEL_10, 1, ADC_SAMPLETIME_55POINT5);
/* Enable ADC DMA */
ADC_DMA_Enable(ENABLE);
ADC_Resolution_Config(ADC_RESOLUTION_12B);
/* Enable ADC */
ADC_Enable(ENABLE);
ADC_Calibration();
/* Start ADC Software Conversion */
ADC_SoftwareStartConv_Enable(ENABLE);
}
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/* Configure System clocks -----------------------------------------------*/
RCC_Configuration();
/* Configure NVIC --------------------------------------------------------*/
NVIC_Configuration();
/* Configure GPIO ports --------------------------------------------------*/
GPIO_Configuration();
/* Configure TIM2 --------------------------------------------------------*/
/* Configure Time Base */
TIMER_BaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIMER_Period = 256;
TIM_TimeBaseStructure.TIMER_Prescaler = 6;
TIM_TimeBaseStructure.TIMER_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIMER_CounterMode = TIMER_COUNTER_UP;
TIMER_BaseInit(TIMER2, &TIM_TimeBaseStructure);
/* Configure TIM2 channel2 in PWM mode */
TIM_OCInitStructure.TIMER_OCMode = TIMER_OC_MODE_PWM1;
TIM_OCInitStructure.TIMER_OutputState = TIMER_OUTPUT_STATE_ENABLE;
TIM_OCInitStructure.TIMER_Pulse = 128;
TIM_OCInitStructure.TIMER_OCPolarity = TIMER_OC_POLARITY_LOW;
TIMER_OC2_Init(TIMER2, &TIM_OCInitStructure);
/* Configure DMA1 Channel1 -----------------------------------------------*/
DMA_DeInit(DMA1_CHANNEL1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC_RDTR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_RegularConvertedValueTab;
DMA_InitStructure.DMA_DIR = DMA_DIR_PERIPHERALSRC;
DMA_InitStructure.DMA_BufferSize = 64;
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_HIGH;
DMA_InitStructure.DMA_MTOM = DMA_MEMTOMEM_DISABLE;
DMA_Init(DMA1_CHANNEL1, &DMA_InitStructure);
/* Enable DMA1 channel1 */
DMA_Enable(DMA1_CHANNEL1, ENABLE);
/* Configure ADC ---------------------------------------------------------*/
ADC_InitStructure.ADC_Mode_Scan = ENABLE;
ADC_InitStructure.ADC_Mode_Continuous = DISABLE;
ADC_InitStructure.ADC_Trig_External = ADC_EXTERNAL_TRIGGER_MODE_T2_CC2;
ADC_InitStructure.ADC_Data_Align = ADC_DATAALIGN_RIGHT;
ADC_InitStructure.ADC_Channel_Number = 1;
ADC_Init(&ADC_InitStructure);
/* Configure ADC regular channel14 */
ADC_RegularChannel_Config(ADC_CHANNEL_14, 1, ADC_SAMPLETIME_55POINT5);
/* Set inserted sequencer length */
ADC_InsertedSequencerLength_Config(1);
/* Configure ADC inserted channel */
ADC_InsertedChannel_Config(ADC_CHANNEL_11, 1, ADC_SAMPLETIME_55POINT5);
/* Configure ADC inserted external trigger */
ADC_ExternalTrigInsertedConv_Config(ADC_EXTERNAL_TRIG_INSERTCONV_NONE);
/* Enable automatic inserted conversion start after regular one */
ADC_AutoInsertedConv_Enable(ENABLE);
/* Enable ADC DMA */
ADC_DMA_Enable(ENABLE);
/* Enable ADC external trigger */
ADC_ExternalTrigConv_Enable( ENABLE);
/* Enable EOIC interrupt */
ADC_INTConfig(ADC_INT_EOIC, ENABLE);
/* Enable ADC */
ADC_Enable(ENABLE);
ADC_Calibration();
/* TIM2 counter enable */
TIMER_Enable(TIMER2, ENABLE);
/* TIM2 main Output enable */
TIMER_CtrlPWMOutputs(TIMER2, ENABLE);
/* Test on channel1 transfer complete flag */
while(!DMA_GetBitState(DMA1_FLAG_TC1));
/* Clear channel1 transfer complete flag */
DMA_ClearBitState(DMA1_FLAG_TC1);
/* TIM2 counter disable */
TIMER_Enable(TIMER2, DISABLE);
/* Turn on the Led1 */
GD_EVAL_LEDOn(LED1);
while (1)
{
}
}