2024-08-26 12:19 PM
wrote a basic test for ltdc and if i change any of the ltdc registers and pause the debug it crashes heres the functions for the ltdc ive wrote
void ltdc_gpio_init(void){
//GPIO B,C,D,E,F,G,H,I,J,K Clock Access
RCC->AHB4ENR |= (1U<<1);//PORTB
RCC->AHB4ENR |= (1U<<2);//PORTC
RCC->AHB4ENR |= (1U<<3);//PORTD
RCC->AHB4ENR |= (1U<<4);//PORTE
RCC->AHB4ENR |= (1U<<5);//PORTF
RCC->AHB4ENR |= (1U<<6);//PORTG
RCC->AHB4ENR |= (1U<<7);//PORTH
RCC->AHB4ENR |= (1U<<8);//PORTI
RCC->AHB4ENR |= (1U<<9);//PORTJ
RCC->AHB4ENR |= (1U<<10);//PORTK
//MODE
GPIOB->MODER |= (1U<<3);//PB1 AF MODE
GPIOB->MODER &=~(1U<<2);
GPIOC->MODER |= (1U<<1);//PC0 AF MODE
GPIOC->MODER &=~(1U<<0);
GPIOD->MODER |= (1U<<13);//PD6 AF MODE
GPIOD->MODER &=~(1U<<12);
GPIOE->MODER |= (1U<<9);//PE4 AF MODE
GPIOE->MODER &=~(1U<<8);
GPIOE->MODER |= (1U<<11);//PE5 AF MODE
GPIOE->MODER &=~(1U<<10);
GPIOE->MODER |= (1U<<13);//PE6 AF MODE
GPIOE->MODER &=~(1U<<12);
GPIOF->MODER |= (1U<<21);//PF10 AF MODE
GPIOF->MODER &=~(1U<<20);
GPIOG->MODER |= (1U<<15);//PG7 AF MODE
GPIOG->MODER &=~(1U<<14);
GPIOG->MODER |= (1U<<21);//PG10 AF MODE
GPIOG->MODER &=~(1U<<20);
GPIOG->MODER |= (1U<<23);//PG11 AF MODE
GPIOG->MODER &=~(1U<<22);
GPIOG->MODER |= (1U<<25);//PG12 AF MODE
GPIOG->MODER &=~(1U<<24);
GPIOH->MODER |= (1U<<5);//PH2 AF MODE
GPIOH->MODER &=~(1U<<4);
GPIOH->MODER |= (1U<<7);//PH3 AF MODE
GPIOH->MODER &=~(1U<<6);
GPIOH->MODER |= (1U<<17);//PH8 AF MODE
GPIOH->MODER &=~(1U<<16);
GPIOH->MODER |= (1U<<19);//PH9 AF MODE
GPIOH->MODER &=~(1U<<18);
GPIOH->MODER |= (1U<<21);//PH10 AF MODE
GPIOH->MODER &=~(1U<<20);
GPIOI->MODER |= (1U<<9);//PI4 AF MODE
GPIOI->MODER &=~(1U<<8);
GPIOI->MODER |= (1U<<11);//PI5 AF MODE
GPIOI->MODER &=~(1U<<10);
GPIOI->MODER |= (1U<<13);//PI6 AF MODE
GPIOI->MODER &=~(1U<<12);
GPIOI->MODER |= (1U<<15);//PI7 AF MODE
GPIOI->MODER &=~(1U<<14);
GPIOI->MODER |= (1U<<19);//PI9 AF MODE
GPIOI->MODER &=~(1U<<18);
GPIOI->MODER |= (1U<<21);//PI10 AF MODE
GPIOI->MODER &=~(1U<<20);
GPIOJ->MODER |= (1U<<13);//PJ6 AF MODE
GPIOJ->MODER &=~(1U<<12);
GPIOJ->MODER |= (1U<<19);//PJ9 AF MODE
GPIOJ->MODER &=~(1U<<18);
GPIOJ->MODER |= (1U<<23);//PJ11 AF MODE
GPIOJ->MODER &=~(1U<<22);
GPIOK->MODER |= (1U<<1);//PK0 AF MODE
GPIOK->MODER &=~(1U<<0);
GPIOK->MODER |= (1U<<3);//PK1 AF MODE
GPIOK->MODER &=~(1U<<2);
GPIOK->MODER |= (1U<<5);//PK2 AF MODE
GPIOK->MODER &=~(1U<<4);
//Alternate Function
GPIOB->AFR[0] |= (1U<<7);//PB1 AF 14
GPIOB->AFR[0] |= (1U<<6);
GPIOB->AFR[0] |= (1U<<5);
GPIOB->AFR[0] &=~(1U<<4);
GPIOC->AFR[0] |= (1U<<3);//PC0 AF 14
GPIOC->AFR[0] |= (1U<<2);
GPIOC->AFR[0] |= (1U<<1);
GPIOC->AFR[0] &=~(1U<<0);
GPIOD->AFR[0] |= (1U<<27);//PD6 AF 14
GPIOD->AFR[0] |= (1U<<26);
GPIOD->AFR[0] |= (1U<<25);
GPIOD->AFR[0] &=~(1U<<24);
GPIOE->AFR[0] |= (1U<<19);//PE4 AF 14
GPIOE->AFR[0] |= (1U<<18);
GPIOE->AFR[0] |= (1U<<17);
GPIOE->AFR[0] &=~(1U<<16);
GPIOE->AFR[0] |= (1U<<23);//PE5 AF 14
GPIOE->AFR[0] |= (1U<<22);
GPIOE->AFR[0] |= (1U<<21);
GPIOE->AFR[0] &=~(1U<<20);
GPIOE->AFR[0] |= (1U<<27);//PE6 AF 14
GPIOE->AFR[0] |= (1U<<26);
GPIOE->AFR[0] |= (1U<<25);
GPIOE->AFR[0] &=~(1U<<24);
GPIOF->AFR[1] |= (1U<<11);//PF10 AF 14
GPIOF->AFR[1] |= (1U<<10);
GPIOF->AFR[1] |= (1U<<9);
GPIOF->AFR[1] &=~(1U<<8);
GPIOG->AFR[0] |= (1U<<31);//PG7 AF 14
GPIOG->AFR[0] |= (1U<<30);
GPIOG->AFR[0] |= (1U<<29);
GPIOG->AFR[0] &=~(1U<<28);
GPIOG->AFR[1] |= (1U<<11);//PG10 AF 14
GPIOG->AFR[1] |= (1U<<10);
GPIOG->AFR[1] |= (1U<<9);
GPIOG->AFR[1] &=~(1U<<8);
GPIOG->AFR[1] |= (1U<<15);//PG11 AF 14
GPIOG->AFR[1] |= (1U<<14);
GPIOG->AFR[1] |= (1U<<13);
GPIOG->AFR[1] &=~(1U<<12);
GPIOG->AFR[1] |= (1U<<19);//PG12 AF 14
GPIOG->AFR[1] |= (1U<<18);
GPIOG->AFR[1] |= (1U<<17);
GPIOG->AFR[1] &=~(1U<<16);
GPIOH->AFR[0] |= (1U<<11);//PH2 AF 14
GPIOH->AFR[0] |= (1U<<10);
GPIOH->AFR[0] |= (1U<<9);
GPIOH->AFR[0] &=~(1U<<8);
GPIOH->AFR[0] |= (1U<<15);//PH3 AF 14
GPIOH->AFR[0] |= (1U<<14);
GPIOH->AFR[0] |= (1U<<13);
GPIOH->AFR[0] &=~(1U<<12);
GPIOH->AFR[1] |= (1U<<3);//PH8 AF 14
GPIOH->AFR[1] |= (1U<<2);
GPIOH->AFR[1] |= (1U<<1);
GPIOH->AFR[1] &=~(1U<<0);
GPIOH->AFR[1] |= (1U<<7);//PH9 AF 14
GPIOH->AFR[1] |= (1U<<6);
GPIOH->AFR[1] |= (1U<<5);
GPIOH->AFR[1] &=~(1U<<4);
GPIOH->AFR[1] |= (1U<<11);//PH10 AF 14
GPIOH->AFR[1] |= (1U<<10);
GPIOH->AFR[1] |= (1U<<9);
GPIOH->AFR[1] &=~(1U<<8);
GPIOI->AFR[0] |= (1U<<19);//PI4 AF 14
GPIOI->AFR[0] |= (1U<<18);
GPIOI->AFR[0] |= (1U<<17);
GPIOI->AFR[0] &=~(1U<<16);
GPIOI->AFR[0] |= (1U<<23);//PI5 AF 14
GPIOI->AFR[0] |= (1U<<22);
GPIOI->AFR[0] |= (1U<<21);
GPIOI->AFR[0] &=~(1U<<20);
GPIOI->AFR[0] |= (1U<<27);//PI6 AF 14
GPIOI->AFR[0] |= (1U<<26);
GPIOI->AFR[0] |= (1U<<25);
GPIOI->AFR[0] &=~(1U<<24);
GPIOI->AFR[0] |= (1U<<31);//PI7 AF 14
GPIOI->AFR[0] |= (1U<<30);
GPIOI->AFR[0] |= (1U<<29);
GPIOI->AFR[0] &=~(1U<<28);
GPIOI->AFR[1] |= (1U<<7);//PI9 AF 14
GPIOI->AFR[1] |= (1U<<6);
GPIOI->AFR[1] |= (1U<<5);
GPIOI->AFR[1] &=~(1U<<4);
GPIOI->AFR[1] |= (1U<<11);//PI10 AF 14
GPIOI->AFR[1] |= (1U<<10);
GPIOI->AFR[1] |= (1U<<9);
GPIOI->AFR[1] &=~(1U<<8);
GPIOJ->AFR[0] |= (1U<<27);//PJ6 AF 14
GPIOJ->AFR[0] |= (1U<<26);
GPIOJ->AFR[0] |= (1U<<25);
GPIOJ->AFR[0] &=~(1U<<24);
GPIOJ->AFR[1] |= (1U<<7);//PJ9 AF 14
GPIOJ->AFR[1] |= (1U<<6);
GPIOJ->AFR[1] |= (1U<<5);
GPIOJ->AFR[1] &=~(1U<<4);
GPIOJ->AFR[1] |= (1U<<15);//PJ11 AF 14
GPIOJ->AFR[1] |= (1U<<14);
GPIOJ->AFR[1] |= (1U<<13);
GPIOJ->AFR[1] &=~(1U<<12);
GPIOK->AFR[0] |= (1U<<3);//PK0 AF 14
GPIOK->AFR[0] |= (1U<<2);
GPIOK->AFR[0] |= (1U<<1);
GPIOK->AFR[0] &=~(1U<<0);
GPIOK->AFR[0] |= (1U<<7);//PK1 AF 14
GPIOK->AFR[0] |= (1U<<6);
GPIOK->AFR[0] |= (1U<<5);
GPIOK->AFR[0] &=~(1U<<4);
GPIOK->AFR[0] |= (1U<<11);//PK2 AF 14
GPIOK->AFR[0] |= (1U<<10);
GPIOK->AFR[0] |= (1U<<9);
GPIOK->AFR[0] &=~(1U<<8);
}
void ltdc_init(void){
//ltdc_gpio_init();
//clock access to LTDC
RCC->APB3ENR |= (1U<<3);
//RCC->APB3RSTR |= (1U<<3);
//RCC->APB3RSTR &=~(1U<<3);
//LTDC->GCR |= (1U<<0);
//LTDC->GCR &=~(1U<<0);
//for(int i = 0; i <(0xFFFFU * 20U); i++){}
//for(int i = 0; i <(0xFFFFU * 20U); i++){}
//H Synch Timings
LTDC->SSCR |= ((HSW - 1) << 16);
//test_led();
LTDC->BPCR |= ((HSW + HBP -1) << 16);
LTDC->AWCR |= (HSW + HBP + ACTIVE_WIDTH - 1) << 16;
LTDC->TWCR |= (HSW + HBP + ACTIVE_WIDTH + HFP -1) << 16;
//V sync timing
LTDC->SSCR |= (VSW - 1) << 0;
LTDC->BPCR |= (VSW + VBP -1) << 0;
LTDC->AWCR |= (VSW + VBP + ACTIVE_WIDTH - 1) << 0;
LTDC->TWCR |= (VSW + VBP + ACTIVE_WIDTH + VFP -1) << 0;
//background color
LTDC->BCCR |= 0xFF0000U;
//default polarity for hsync vsync dotcolck enable
//enable the LTDC Periph
LTDC->GCR |= (1U<<0);
}