void Send_CMD(uint8_t dat)
{ //Otpravka komand
      GPIOB->ODR &= ~(1<<7);  //ChipSelect loy
   GPIOB->ODR &= ~(1<<6);  //DC LoyLevel   
   SPI1->CR1 &= ~SPI_CR1_DFF;
   
   while (!(SPI1->SR & SPI_SR_TXE));
   SPI1->DR = dat;

    while (!(SPI1->SR & SPI_SR_TXE));
   while ((SPI1->SR & SPI_SR_BSY));
        GPIOB->ODR |= (1<<7);  //ChipSelect Up
}
void Send_DAT(uint8_t dat){ // danue 8 bit
     GPIOB->ODR &= ~(1<<7);  //ChipSelect loy
   GPIOB->ODR |= (1<<6);  //DC UpLevel
      
   SPI1->CR1 &= ~SPI_CR1_DFF;   
   
   while (!(SPI1->SR & SPI_SR_TXE));
   SPI1->DR = dat;

   while (!(SPI1->SR & SPI_SR_TXE));
   while ((SPI1->SR & SPI_SR_BSY));   
       
   GPIOB->ODR |= (1<<7);  //ChipSelect Up
}
void Send_DAT16(uint16_t dat){ // danue 16 bit
         GPIOB->ODR &= ~(1<<7);  //ChipSelect loy
   GPIOB->ODR |= (1<<6);  //DC UpLevel
   
   SPI1->CR1 |= SPI_CR1_DFF;
      
   while (!(SPI1->SR & SPI_SR_TXE)){};
   SPI1->DR = dat;

   while (!(SPI1->SR & SPI_SR_TXE)){};
   while ((SPI1->SR & SPI_SR_BSY)){};
       
       GPIOB->ODR |= (1<<7);  //ChipSelect Up
}

void LCD_Init(){ 
        SPI1->CR1 |= SPI_CR1_SPE;//On Spi1
        GPIOB->ODR |= (1<<4);  //RST Hay
        delay(15);
   GPIOB->ODR &= ~(1<<4);  //RST loy
   delay(15);
        GPIOB->ODR |= (1<<4);  //RST Hay
   delay(15);
       
        Send_CMD(0x01);//Sbros nastroek
        delay(50);
        Send_CMD(0x28);//Programnoe wukl
        Send_CMD(0xC0);//Obuchnaja pitanie
   Send_CMD(0x11);//SlipOut
   delay(150);
        Send_CMD(0x29);//DispOn 
   Send_CMD(0x3A);    //Format peredachi piksela
   Send_DAT(0x55);      
   Send_CMD(0x20);//Vukl inversiu
   Send_CMD(0x36);//hz 
   Send_DAT(0x80);
        Send_DAT(0x40);
        Send_DAT(0x08);
        Send_DAT(0x20);   
}

void SetWindow(uint16_t startX, uint16_t startY, uint16_t stopX, uint16_t stopY) {
   Send_CMD(0x2A);
   Send_DAT(startX >> 8);
   Send_DAT(startX);
   Send_DAT(stopX >> 8);
   Send_DAT(stopX); 
   Send_CMD(0x2B);
   Send_DAT(0x00);
   Send_DAT(startY);
   Send_DAT(stopY);
}
void bufer()
{
  uint16_t x = 0, y = 0;
  SetWindow(0, 0, 240, 320);
   Send_CMD(0x2C);
        while(y++ < 320)
        {
          x=0;
          while(x++ <  240)
          {
            Send_DAT16(0xFFE0);//0xFFE0
          }
        }
}

#define RCC_PLLCFGR_PLLP_div2              (0x0U << RCC_PLLCFGR_PLLP_Pos)
#define RCC_PLLCFGR_PLLP_div4              (0x1U << RCC_PLLCFGR_PLLP_Pos)
#define RCC_CFGR_MCO2_HSE                  (0x2U << RCC_CFGR_MCO2_Pos)
#define RCC_CFGR_MCO2PRE_div1              (0x0U << RCC_CFGR_MCO2PRE_Pos)
#define RCC_CFGR_MCO1PRE_div1              (0x0U << RCC_CFGR_MCO1PRE_Pos)
#define RCC_CFGR_I2SSRC_PLLI2S             (0x0U << RCC_CFGR_I2SSRC_Pos)
#define RCC_CFGR_MCO1_HSE                  (0x2U << RCC_CFGR_MCO1_Pos)

#include <stddef.h>
#include "stm32f411xe.h"

#ifdef __cplusplus
extern "C" {
#endif

int __low_level_init(void)
{
 
   //Kvarc 25MHz, Proc 100MHzbegin
 RCC->CR = _VAL2FLD(RCC_CR_HSITRIM,16) | RCC_CR_HSION | RCC_CR_HSEON;
  while(!(RCC->CR & RCC_CR_HSERDY));
 RCC->PLLCFGR = RCC_PLLCFGR_PLLSRC_HSE | _VAL2FLD(RCC_PLLCFGR_PLLQ,4) | _VAL2FLD(RCC_PLLCFGR_PLLN,192) | _VAL2FLD(RCC_PLLCFGR_PLLM,25) | RCC_PLLCFGR_PLLP_div2;
  RCC->CR = _VAL2FLD(RCC_CR_HSITRIM,16) | RCC_CR_HSION | RCC_CR_HSEON | RCC_CR_PLLON;
  while(!(RCC->CR & RCC_CR_PLLRDY));
  RCC->CFGR = RCC_CFGR_MCO2_HSE | RCC_CFGR_MCO2PRE_div1 | RCC_CFGR_MCO1PRE_div1 | RCC_CFGR_I2SSRC_PLLI2S | RCC_CFGR_MCO1_HSE
         | _VAL2FLD(RCC_CFGR_RTCPRE,8) | RCC_CFGR_PPRE2_DIV1 | RCC_CFGR_PPRE1_DIV2 | RCC_CFGR_HPRE_DIV1  | RCC_CFGR_SW_PLL;
  FLASH->ACR = FLASH_ACR_PRFTEN | FLASH_ACR_ICEN | FLASH_ACR_DCEN | FLASH_ACR_LATENCY_3WS;
  //*///Kvarc 25MHz, Proc 100MHz End
  //Timer begin
  RCC->APB1ENR |=  RCC_APB1ENR_TIM2EN;// Taktirovanie Timer 2
   __enable_irq ();
  //Timer end
    RCC->APB2ENR |= RCC_APB2ENR_SPI1EN; //Taktirovanie SPI1
    RCC->AHB1ENR |= RCC_AHB1ENR_GPIOBEN;//Taktirovanie Port B
    GPIOB->AFR[0] |= 0x00505000;
    GPIOB->MODER |= ( GPIO_MODER_MODER4_0 | GPIO_MODER_MODER6_0 | GPIO_MODER_MODER7_0 | GPIO_MODER_MODER8_0 | GPIO_MODER_MODER10_0 ); // Port B Vihod
    GPIOB->PUPDR |= ( GPIO_PUPDR_PUPD4_1 | GPIO_PUPDR_PUPD6_1 | GPIO_PUPDR_PUPD7_1 | GPIO_PUPDR_PUPD8_1 | GPIO_PUPDR_PUPD10_1 );    // Port B Vihod
    GPIOB->MODER |= (GPIO_MODER_MODER3_1 | GPIO_MODER_MODER5_1);
    GPIOB->OSPEEDR |= (3<<10)|(3<<6)|(3<<8)|(3<<12)|(3<<14)|(3<<19);  // HIGH Speed for PA5, PA6, PA7, PA9
    SPI1->CR1  |= (SPI_CR1_MSTR | SPI_CR1_SSM | SPI_CR1_SSI);
     NVIC_EnableIRQ(TIM2_IRQn); //Prerivania
  return 0;
}

#ifdef __cplusplus
}
#endif

static uint8_t flagon = 1;

void delay(uint32_t _delay){
  TIM2->PSC =9600;
  TIM2->ARR = _delay*10;//ms
  TIM2->CR1 |= TIM_CR1_CEN;
   TIM2->DIER |= TIM_DIER_UIE;
  flagon = 1;
  while(flagon);}

 void TIM2_IRQHandler(void)
{
  TIM2->SR &= ~TIM_SR_UIF;
  TIM2->CR1 &= ~TIM_CR1_CEN;
  flagon = 0;
}

//Draiver displeja, svistok stm32F411CEU6, TFT 126x160 ST7735
/*3.3v PB3(SPI1_SCK)-SCL
       PB5(SPI1_MOSI)-SDA
       PB4-RES
       PB6-DC (Dannye|Komandy)
       PB7-CS
       PB8-BL (Pitanie???)
       PB10-HL na GND
*/
#include <stddef.h>
#include "stm32f411xe.h"
#include "displey.h"

int main()
{
 
  //GPIOB->ODR |= 0x400;//On svetodiod
    GPIOB->ODR |= 0x100;//On podsvetka
 
   LCD_Init();
 //bufer();
while(1){
   delay(1000);//1s
 
    //    GPIOB->ODR |= (1<<8);//On svetodiod
     // delay(1000);//1s
    //    GPIOB->ODR &= ~(1<<8);//On svetodiod
} }
void SystemInit(void){}

 //Kvarc 25MHz, Proc 100MHzbegin
   FLASH->ACR = FLASH_ACR_PRFTEN | FLASH_ACR_ICEN | FLASH_ACR_DCEN | FLASH_ACR_LATENCY_3WS;
 RCC->CR = _VAL2FLD(RCC_CR_HSITRIM,16) | RCC_CR_HSION | RCC_CR_HSEON;
  while(!(RCC->CR & RCC_CR_HSERDY));
   
 RCC->PLLCFGR = RCC_PLLCFGR_PLLSRC_HSE | _VAL2FLD(RCC_PLLCFGR_PLLQ,4) | _VAL2FLD(RCC_PLLCFGR_PLLN,192) | _VAL2FLD(RCC_PLLCFGR_PLLM,25) | RCC_PLLCFGR_PLLP_div2;
  RCC->CR = _VAL2FLD(RCC_CR_HSITRIM,16) | RCC_CR_HSION | RCC_CR_HSEON | RCC_CR_PLLON;
  while(!(RCC->CR & RCC_CR_PLLRDY));
  RCC->CFGR = RCC_CFGR_MCO2_HSE | RCC_CFGR_MCO2PRE_div1 | RCC_CFGR_MCO1PRE_div1 | RCC_CFGR_I2SSRC_PLLI2S | RCC_CFGR_MCO1_HSE
         | _VAL2FLD(RCC_CFGR_RTCPRE,8) | RCC_CFGR_PPRE2_DIV1 | RCC_CFGR_PPRE1_DIV2 | RCC_CFGR_HPRE_DIV1  | RCC_CFGR_SW_PLL;