#include "stm32f0xx_hal.h"
#include "si5351.h"
#include "jtencode.h"
#include "adc.h"
#include "dma.h"
#include "i2c.h"
#include "usart.h"
#include "gpio.h"
#include "gps.h"


void sysclk_init(void);
#define WSPR_DEFAULT_FREQ 14097100UL
#define WSPR_TONE_SPACING 146 // ~1.46 Hz
#define WSPR_CTC 10672 // CTC value for WSPR

char call[7] = "N0CALL";
char loc[5] = "AA00";
uint8_t dbm = 27;
uint8_t tx_buffer[255];


uint32_t freq = WSPR_DEFAULT_FREQ;
uint8_t symbol_count = WSPR_SYMBOL_COUNT;
uint16_t ctc = WSPR_CTC;
uint16_t tone_spacing = WSPR_TONE_SPACING;
volatile uint8_t proceed = 0;

void encode_wspr(void)
{
    uint8_t i;
    //for(i=0; i<255; i++)
    //    tx_buffer[i] = 0;

    wspr_encode(call, loc, dbm, tx_buffer);


    //si5351_output_enable(SI5351_CLK0, 1);

    for(i=0; i<symbol_count; i++)
    {

        uint32_t freq2 = (freq * 100) + (tx_buffer[i] * tone_spacing);
        si5351_set_freq(freq2, 0, SI5351_CLK0);

          //si5351_set_freq((freq * 100) + (tx_buffer[i] * tone_spacing), 0, SI5351_CLK0);
          HAL_Delay(300);
          //proceed = 0;
          //while(!proceed);
    }
}

int main(void)
{
    HAL_Init();

    sysclk_init();
    gpio_init();
    MX_DMA_Init();
    MX_ADC_Init();
    i2c_init();

    HAL_GPIO_WritePin(OSC_NOTEN, 0);
    HAL_GPIO_WritePin(TCXO_EN, 1);
    HAL_Delay(100);

//    MX_USART1_UART_Init();

    jtencode_init();
    //gps_init();
    si5351_init(i2c_get(), SI5351_CRYSTAL_LOAD_8PF, 0);
    si5351_set_correction(0);
    //si5351_set_pll(SI5351_PLL_FIXED, SI5351_PLLA);
    //si5351_set_ms_source(SI5351_CLK0, SI5351_PLLA);
    si5351_set_freq(WSPR_DEFAULT_FREQ * 100, 0, SI5351_CLK0);
    si5351_drive_strength(SI5351_CLK0, SI5351_DRIVE_2MA); // Set for max power if desired (8ma max)
    si5351_output_enable(SI5351_CLK0, 1);
    //si5351_pll_reset(SI5351_PLLA);

    //wspr_encode(call, loc, dbm, tx_buffer);

    encode_wspr();

    HAL_Delay(1000);

    uint32_t led_timer = HAL_GetTick();
    uint32_t last_gps  = HAL_GetTick();
    uint32_t last_wspr  = HAL_GetTick();

    while (1)
    {
        if(HAL_GetTick() - last_wspr > 6000)
        {
            last_wspr = HAL_GetTick();
        }
        
        if(HAL_GetTick() - led_timer > 100)
        {
            //HAL_GPIO_TogglePin(LED_BLUE);
            led_timer = HAL_GetTick();
        }
        if(HAL_GetTick() - last_gps > 100)
        {
//            gps_process();
            last_gps = HAL_GetTick();
        }
    }
}


// Initialize system clocks
void sysclk_init(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct;
    RCC_ClkInitTypeDef RCC_ClkInitStruct;
    RCC_PeriphCLKInitTypeDef PeriphClkInit;

    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_HSI14;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSI14State = RCC_HSI14_ON;
    RCC_OscInitStruct.HSICalibrationValue = 16;
    RCC_OscInitStruct.HSI14CalibrationValue = 16;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    HAL_RCC_OscConfig(&RCC_OscInitStruct);

    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);

    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_I2C1;
    PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
    PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_SYSCLK;
    HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);

    HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

    HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

    // SysTick_IRQn interrupt configuration 
    HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}