adc

#include "adc.h"

extern volatile u16 temperature = 0;
extern volatile u16 v_refint = 0;
extern volatile u16 lisam_ADC3 = 0;
extern volatile u16 lisam_adc2 = 0;
u8 channel_array[4]; /* for injected sampling, 4 channels max, for regular, 16 max */

void timer2_setup(void)
{
    rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_TIM2EN);

    /* Time Base configuration */
    timer_reset(TIM2);
    timer_set_mode(TIM2, TIM_CR1_CKD_CK_INT,
        TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP);
    timer_set_period(TIM2, 0xFF);
    timer_set_prescaler(TIM2, 0x8);
    timer_set_clock_division(TIM2, 0x0);
    /* Generate TRGO on every update. */
    timer_set_master_mode(TIM2, TIM_CR2_MMS_UPDATE);
    timer_enable_counter(TIM2);
    // printf("timer2_setup\r\n");
}

void adc_setup(void)
{
    int i;

    rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC3EN);

    /* Make sure the ADC doesn't run during config. */
    adc_off(ADC3);

    /* We configure everything for one single timer triggered injected conversion with interrupt generation. */
    /* While not needed for a single channel, try out scan mode which does all channels in one sweep and
     * generates the interrupt/EOC/JEOC flags set at the end of all channels, not each one.
     */
    adc_enable_scan_mode(ADC3);
    adc_set_single_conversion_mode(ADC3);
    /* We want to start the injected conversion with the TIM2 TRGO */
    adc_enable_external_trigger_injected(ADC3, ADC_CR2_JEXTSEL_TIM2_TRGO, ADC_CR2_EXTEN_FALLING_EDGE);
    /* Generate the ADC3_2_IRQ */
    adc_enable_eoc_interrupt_injected(ADC3);
    adc_set_right_aligned(ADC3);
    /* We want to read the temperature sensor, so we have to enable it. */
    // adc_enable_temperature_sensor();
    adc_set_sample_time_on_all_channels(ADC3, ADC_SMPR_SMP_28DOT5CYC);

    /* Select the channels we want to convert.
     * 16=temperature_sensor, 17=Vrefint, 13=ADC3, 10=ADC2
     */
    channel_array[0] = 16;
    channel_array[1] = 17;
    channel_array[2] = 13;
    channel_array[3] = 10;
    adc_set_injected_sequence(ADC3, 4, channel_array);

    adc_power_on(ADC3);

    /* Wait for ADC starting up. */
    for (i = 0; i < 800000; i++)    /* Wait a bit. */
        __asm__("nop");

    // adc_reset_calibration(ADC3);
    // while ((ADC_CR2(ADC3) & ADC_CR2_RSTCAL) != 0); //added this check
    // adc_calibration(ADC3);
    // while ((ADC_CR2(ADC3) & ADC_CR2_CAL) != 0); //added this check
    // printf("adc_setup\r\n");
    // adc_reset_calibration(ADC3);
    // adc_calibration(ADC3);
}

// void adc_setup(void)
// {
//     int i;
//  gpio_mode_setup(GPIOF, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO3);
//     rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC3EN);

//     /* Make sure the ADC doesn't run during config. */
//     adc_off(ADC3);

//     /* We configure everything for one single conversion. */
//     adc_disable_scan_mode(ADC3);
//     adc_set_single_conversion_mode(ADC3);
//     adc_disable_external_trigger_regular(ADC3);
//     adc_set_right_aligned(ADC3);
//     /* We want to read the temperature sensor, so we have to enable it. */
//     // adc_enable_temperature_sensor();
//     adc_set_sample_time_on_all_channels(ADC3, ADC_SMPR_SMP_28DOT5CYC);
//     adc_power_on(ADC3);

//     /* Wait for ADC starting up. */
//     for (i = 0; i < 800000; i++)    /* Wait a bit. */
//             __asm__("nop");

//     //adc_reset_calibration(ADC3);
//     //adc_calibration(ADC3);
// }

void adc_isr(void)
{
    /* Clear Injected End Of Conversion (JEOC) */
    ADC_SR(ADC3) &= ~ADC_SR_JEOC;
    temperature = adc_read_injected(ADC3,1);
    v_refint = adc_read_injected(ADC3,2);
    lisam_ADC3 = adc_read_injected(ADC3,3);
    lisam_adc2 = adc_read_injected(ADC3,4);
    printf("ADC_ISR\r\n");
}