cm3cpp_adc.cpp


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#include "cm3cpp_adc.h"

namespace cm3cpp {

namespace adc {

Adc::Adc(Number adc)
{
    switch (adc) {
        case ADC_1:
            _adc = ADC1;
            break;
        case ADC_2:
            _adc = ADC2;
            break;
        case ADC_3:
            _adc = ADC3;
            break;
    }
}

void Adc::set_resolution(Resolution res)
{
    ADC_CR1(_adc) &= ~ADC_CR1_RES_MASK;
    ADC_CR1(_adc) |= (uint32_t)res;
}

void Adc::enable_scan_mode()
{
    ADC_CR1(_adc) |= ADC_CR1_SCAN_MASK;
}

void Adc::disable_scan_mode()
{
    ADC_CR1(_adc) &= ~ADC_CR1_SCAN_MASK;
}

void Adc::set_data_alignment(Alignment align)
{
    switch (align) {
        case RIGHT_ALIGN:
            ADC_CR2(_adc) &= ~ADC_CR2_ALIGN_MASK;
            break;
        case LEFT_ALIGN:
            ADC_CR2(_adc) |= ADC_CR2_ALIGN_MASK;
            break;
    }
}

void Adc::set_external_trigger_for_regular_group(RegularGroupTrigger trigger)
{
    ADC_CR2(_adc) &= ~ADC_CR2_EXTSEL_MASK;
    ADC_CR2(_adc) |= (uint32_t)trigger;
}

void Adc::set_external_trigger_polarity_for_regular_group(
  RegularGroupTriggerPolarity polarity)
{
    ADC_CR2(_adc) &= ~ADC_CR2_EXTEN_MASK;
    ADC_CR2(_adc) |= (uint32_t)polarity;
}

void Adc::set_conversion_mode(ConversionMode mode)
{
    switch (mode) {
        case CONTINUOUS_CONV:
            ADC_CR2(_adc) |= ADC_CR2_CONT_MASK;
            break;
        case SINGLE_CONV:
            ADC_CR2(_adc) &= ~ADC_CR2_CONT_MASK;
            break;
    }
}

void Adc::enable_dma_request()
{
    ADC_CR2(_adc) |= ADC_CR2_DDS_MASK;
}

void Adc::disable_dma_request()
{
    ADC_CR2(_adc) &= ~ADC_CR2_DDS_MASK;
}

void Adc::enable_dma()
{
    ADC_CR2(_adc) |= ADC_CR2_DMA_MASK;
}

void Adc::disable_dma()
{
    ADC_CR2(_adc) &= ~ADC_CR2_DMA_MASK;
}

void Adc::enable()
{
    ADC_CR2(_adc) |= ADC_CR2_ADON_MASK;
}

void Adc::disable()
{
    ADC_CR2(_adc) &= ~ADC_CR2_ADON_MASK;
}

void Adc::start_conversion()
{
    ADC_CR2(_adc) |= ADC_CR2_SWSTART_MASK;
}

void Adc::set_number_of_conversions(uint8_t number)
{
    ADC_SQR1(_adc) &= ~ADC_SQR1_L_MASK;
    ADC_SQR1(_adc) |= (uint32_t)((number - 1) & 0x0F);
}

void Adc::set_channel_sampling_time_selection(SamplingTime time,
                                              Channel channel)
{
    uint32_t offset;

    if (channel < ADC_CHANNEL10) {
        offset = ((uint8_t)channel * ADC_SMP_MASK);
        ADC_SMPR2(_adc) &= ~(ADC_SMP_MASK << offset);
        ADC_SMPR2(_adc) |= ((uint8_t)time << offset);
    }

    else {
        offset = (((uint8_t)channel - ADC_CHANNEL10) * ADC_SMP_MASK);
        ADC_SMPR1(_adc) &= ~(ADC_SMP_MASK << offset);
        ADC_SMPR1(_adc) |= ((uint8_t)time << offset);
    }
}

void Adc::set_conversion_number_in_sequence(uint8_t length, Channel* channel)
{
    uint32_t fifth6 = 0;
    uint32_t fourth6 = 0;
    uint32_t third6 = 0;
    uint32_t second6 = 0;
    uint32_t first6 = 0;
    uint8_t i = 0;

    if (length > 16) {
        return;
    }

    for (i = 1; i <= length; i++) {
        if (i <= 6) {
            first6 |= (channel[i - 1] << ((i - 1) * 5));
        }
        if ((i > 6) & (i <= 12)) {
            second6 |= (channel[i - 1] << ((i - 6 - 1) * 5));
        }
        if ((i > 12) & (i <= 18)) {
            third6 |= (channel[i - 1] << ((i - 12 - 1) * 5));
        }
        if ((i > 18) & (i <= 24)) {
            fourth6 |= (channel[i - 1] << ((i - 18 - 1) * 5));
        }
        if ((i > 24) & (i <= 28)) {
            fifth6 |= (channel[i - 1] << ((i - 24 - 1) * 5));
        }
    }

    ADC_SQR1(_adc) = third6 | ((length - 1) << 20);
    ADC_SQR2(_adc) = second6;
    ADC_SQR3(_adc) = first6;
}

void Adc::set_prescaler(Prescaler prescaler)
{
    ADC_CCR &= ~ADC_CCR_ADCPRE_MASK;
    ADC_CCR |= (uint32_t)prescaler;
}

void Adc::set_dma_mode(DmaMode mode)
{
    ADC_CCR &= ~ADC_CCR_DMA_MASK;
    ADC_CCR |= (uint32_t)mode;
}

void Adc::set_delay_between_two_samples(Delay delay)
{
    ADC_CCR &= ~ADC_CCR_DELAY_MASK;
    ADC_CCR |= (uint32_t)delay;
}

void Adc::set_multi_mode(MultiMode mode)
{
    ADC_CCR &= ~ADC_CCR_MULTI_MASK;
    ADC_CCR |= (uint32_t)mode;
}

void Adc::enable_temp_sensor()
{
    ADC_CCR |= ADC_CCR_TSVREFE_MASK;
}

void Adc::disable_temp_sensor()
{
    ADC_CCR &= ~ADC_CCR_TSVREFE_MASK;
}

}  // namespace adc

}  // namespace cm3cpp