#include "adc.h"


// void adc_setup(void)
// {
//     rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
//     rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
// /* Set port PA1 for ADC1 to analogue mode. */
//     gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO0|GPIO1);
// /* Setup the ADC */
//     nvic_enable_irq(NVIC_ADC_IRQ);
//     u8 channel[2] = { ADC_CHANNEL0,ADC_CHANNEL1 };
//     adc_set_clk_prescale(ADC_CCR_ADCPRE_BY2);
//     adc_disable_scan_mode(ADC1);
//     adc_set_single_conversion_mode(ADC1);
//     adc_set_sample_time(ADC1, ADC_CHANNEL0, ADC_SMPR1_SMP_1DOT5CYC);
//     adc_set_sample_time(ADC1, ADC_CHANNEL1, ADC_SMPR1_SMP_1DOT5CYC);
//     adc_set_multi_mode(ADC_CCR_MULTI_INDEPENDENT);
//     adc_set_regular_sequence(ADC1, 2, channel);
//     adc_enable_eoc_interrupt(ADC1);
//     adc_power_on(ADC1);
// }

void adc_setup(void)
{
    rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
    rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPCEN);
    // rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
    /* Set port PA1 for ADC1 to analogue mode. */
    // gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO0|GPIO1|GPIO4);
    gpio_mode_setup(GPIOC, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO4);
/* Setup the ADC */
    nvic_enable_irq(NVIC_ADC_IRQ);
    // u8 channel[3] = {ADC_CHANNEL0 , ADC_CHANNEL1,  ADC_CHANNEL4};
    u8 channel[1] = {ADC_CHANNEL14};
    adc_set_clk_prescale(ADC_CCR_ADCPRE_BY2);
    adc_disable_scan_mode(ADC1);
    // Check if it needs to be in single conversion mode.
    adc_set_single_conversion_mode(ADC1);
    adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR1_SMP_1DOT5CYC);
    adc_set_multi_mode(ADC_CCR_MULTI_INDEPENDENT);
    adc_set_injected_sequence(ADC1, 1, channel);
    adc_enable_eoc_interrupt_injected(ADC1);
    // adc_eoc_after_each(ADC1);
    adc_power_on(ADC1);
}

// 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) */
    // value = adc_read_regular(ADC1);
    ADC_SR(ADC1) &= ~ADC_SR_JEOC;
    value = adc_read_injected(ADC1, 0);
    // value = adc_read_injected(ADC1, 3);
    // value = adc_read_injected(ADC1, 2);
}