#include "led_driver_config.h"

static void LED_TIMConfig ( void );
static void LED_SPIConfig ( void );

// ----------------------------------------------------------------------------
// Подготовка железа, прерываний и тд для работы с RGB светодиодиками
// ----------------------------------------------------------------------------
void LED_Driver_Config ( void )
{
  LED_TIMConfig ();
  LED_SPIConfig ();
}


// ----------------------------------------------------------------------------
//
// ----------------------------------------------------------------------------
static void LED_TIMConfig ( void )
{
  NVIC_InitTypeDef         NVIC_InitStructure;
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  
  /* LED_TIMx clock enable */
  LED_RCC_APBxPeriphClockCmd ( LED_TIM_RCC, ENABLE );
  
  /* Enable the LED_TIMx gloabal Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel         = LED_TIM_IRQx;
  NVIC_InitStructure.NVIC_IRQChannelPriority = 2;                               // Установим приоритет ниже, чем у модуля NixieDriver
  NVIC_InitStructure.NVIC_IRQChannelCmd      = ENABLE;
  NVIC_Init ( &NVIC_InitStructure );

  /* -----------------------------------------------------------------------
   In this example TIM7 counter clock (TIM7CLK) is set to APB1 clock (PCLK1), since
   APB1 prescaler is set to 1 and TIM7 prescaler is set to 0.
  
  In this example TIM7 input clock (TIM7CLK) is set to APB1 clock (PCLK1), 
  since APB1 prescaler is set to 1.   
  TIM7CLK = PCLK1 = HCLK = SystemCoreClock
  
  With Prescaler set to 479 and Period to 24999, the TIM7 counter is updated each 250 ms
  (i.e. and interrupt is generated each 250 ms)
     TIM7 counter clock = TIM7CLK /((Prescaler + 1)*(Period + 1))
                        = 48 MHz / ((25000)*(480))
                        = 4 Hz 
     ==> TIM7 counter period = 250 ms

  Note:
  SystemCoreClock variable holds HCLK frequency and is defined in system_stm32f0xx.c file.
  Each time the core clock (HCLK) changes, user had to call SystemCoreClockUpdate()
  function to update SystemCoreClock variable value. Otherwise, any configuration
  based on this variable will be incorrect.    
  ----------------------------------------------------------------------- */ 
  
  /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period        = 1000;                               // Это миксросекунды //24999
  TIM_TimeBaseStructure.TIM_Prescaler     = (SystemCoreClock/1000000)-1;        //479;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode   = TIM_CounterMode_Up;
  //TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
  TIM_TimeBaseInit ( LED_TIMx, &TIM_TimeBaseStructure );
  
  /* LED_TIMx Interrupts enable */
  TIM_ITConfig ( LED_TIMx, TIM_IT_Update, ENABLE );
  
  /* LED_TIMx enable counter */
  TIM_Cmd ( LED_TIMx, ENABLE );
}


// ----------------------------------------------------------------------------
//
// ----------------------------------------------------------------------------
static void LED_SPIConfig ( void )
{
  GPIO_InitTypeDef  GPIO_InitStructure;
  SPI_InitTypeDef   SPI_InitStructure;
  NVIC_InitTypeDef  NVIC_InitStructure;
  
  /* Enable the SPI periph */
  LED_SPIx_RCC_APBxPeriphClockCmd ( LED_SPIx_CLK, ENABLE );
  
  /* Enable SCK, MOSI, MISO and NSS GPIO clocks */
  RCC_AHBPeriphClockCmd ( LED_SPIx_SCK_GPIO_CLK     | 
                          LED_SPIx_MOSI_GPIO_CLK    | 
                          LED_SPIx_ST_GPIO_CLK,
                          ENABLE );
  
  GPIO_PinAFConfig ( LED_SPIx_SCK_GPIO_PORT,  LED_SPIx_SCK_SOURCE,  LED_SPIx_SCK_AF  );
  GPIO_PinAFConfig ( LED_SPIx_MOSI_GPIO_PORT, LED_SPIx_MOSI_SOURCE, LED_SPIx_MOSI_AF );
  //GPIO_PinAFConfig ( LED_SPIx_ST_GPIO_PORT,   LED_SPIx_ST_SOURCE,   LED_SPIx_ST_AF   );
  
  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_DOWN;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;

  /* SPI SCK pin configuration */
  GPIO_InitStructure.GPIO_Pin = LED_SPIx_SCK_PIN;
  GPIO_Init ( LED_SPIx_SCK_GPIO_PORT, &GPIO_InitStructure );

  /* SPI MOSI pin configuration */
  GPIO_InitStructure.GPIO_Pin = LED_SPIx_MOSI_PIN;
  GPIO_Init ( LED_SPIx_MOSI_GPIO_PORT, &GPIO_InitStructure );
  
  /* GPIO ST pin configuration */
  GPIO_InitStructure.GPIO_Pin   = LED_SPIx_ST_PIN;
  //GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_OUT;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  //GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_DOWN;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
  GPIO_Init ( LED_SPIx_ST_GPIO_PORT, &GPIO_InitStructure );
  
  /* SPI configuration -------------------------------------------------------*/
  SPI_I2S_DeInit ( LED_SPIx );
  //SPI_InitStructure.SPI_Direction         = SPI_Direction_1Line_Tx;             //SPI_Direction_2Lines_FullDuplex
  SPI_InitStructure.SPI_Direction         = SPI_Direction_2Lines_FullDuplex;     
  SPI_InitStructure.SPI_DataSize          = SPI_DataSize_16b;
  SPI_InitStructure.SPI_CPOL              = SPI_CPOL_Low;
  SPI_InitStructure.SPI_CPHA              = SPI_CPHA_1Edge;
  SPI_InitStructure.SPI_NSS               = SPI_NSS_Soft;
  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
  SPI_InitStructure.SPI_FirstBit          = SPI_FirstBit_MSB;
  SPI_InitStructure.SPI_CRCPolynomial     = 7;
  SPI_InitStructure.SPI_Mode              = SPI_Mode_Master;
  SPI_Init ( LED_SPIx, &SPI_InitStructure );
    
  /* Enable the SPI peripheral */
  SPI_Cmd ( LED_SPIx, ENABLE );
  
  /* Configure the SPI interrupt priority */
  NVIC_InitStructure.NVIC_IRQChannel         = LED_SPIx_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd      = ENABLE;
  NVIC_Init ( &NVIC_InitStructure );
  
  /* Enable the Rx buffer not empty interrupt */
  SPI_I2S_ITConfig ( LED_SPIx, SPI_I2S_IT_RXNE, ENABLE );
  
  LED_ST_PIN_RESET;
}