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#ifndef STM32_H
#define STM32_H

#include <stdint.h>

struct NVIC_t {
	volatile uint32_t ISER[32];
	volatile uint32_t ICER[32];
	volatile uint32_t ISPR[32];
	volatile uint32_t ICPR[32];
	volatile uint32_t IABR[64];
	volatile uint8_t IPR[2816];
	volatile uint32_t STIR;
};

static NVIC_t& NVIC = *(NVIC_t*)0xe000e100;

struct SCB_t {
	volatile uint32_t CPUID;
	volatile uint32_t ICSR;
	volatile uint32_t VTOR;
	volatile uint32_t AIRCR;
	volatile uint32_t SCR;
	volatile uint32_t CCR;
	volatile uint8_t SHPR[12];
	volatile uint32_t SHCSR;
	volatile uint32_t CFSR;
	volatile uint32_t HFSR;
	volatile uint32_t DFSR;
	volatile uint32_t MMAR;
	volatile uint32_t BFAR;
};

static SCB_t& SCB = *(SCB_t*)0xe000ed00;

struct RCC_t {
	volatile uint32_t CR;
	volatile uint32_t CFGR;
	volatile uint32_t CIR;
	volatile uint32_t APB2RSTR;
	volatile uint32_t APB1RSTR;
	volatile uint32_t AHBENR;
	volatile uint32_t APB2ENR;
	volatile uint32_t APB1ENR;
	volatile uint32_t BDCR;
	volatile uint32_t CSR;
	
	enum AHB_dev {
		DMA1  = 1 << 0,
		DMA2  = 1 << 1,
		SRAM  = 1 << 2,
		FLITF = 1 << 4,
		CRC   = 1 << 6,
		FSMC  = 1 << 8,
		SDIO  = 1 << 10
	};
	
	enum APB1_dev {
		TIM2   = 1 << 0,
		TIM3   = 1 << 1,
		TIM4   = 1 << 2,
		TIM5   = 1 << 3,
		TIM6   = 1 << 4,
		TIM7   = 1 << 5,
		TIM12  = 1 << 6,
		TIM13  = 1 << 7,
		TIM14  = 1 << 8,
		WWDG   = 1 << 11,
		SPI2   = 1 << 14,
		SPI3   = 1 << 15,
		USART2 = 1 << 17,
		USART3 = 1 << 18,
		UART4  = 1 << 19,
		UART5  = 1 << 20,
		I2C1   = 1 << 21,
		I2C2   = 1 << 22,
		USB    = 1 << 23,
		CAN    = 1 << 25,
		BKP    = 1 << 27,
		PWR    = 1 << 28,
		DAC    = 1 << 29
	};
	
	enum APB2_dev {
		AFIO   = 1 << 0,
		IOPA   = 1 << 2,
		IOPB   = 1 << 3,
		IOPC   = 1 << 4,
		IOPD   = 1 << 5,
		IOPE   = 1 << 6,
		IOPF   = 1 << 7,
		IOPG   = 1 << 8,
		ADC1   = 1 << 9,
		ADC2   = 1 << 10,
		TIM1   = 1 << 11,
		SPI1   = 1 << 12,
		TIM8   = 1 << 13,
		USART1 = 1 << 14,
		ADC3   = 1 << 15,
		TIM9   = 1 << 19,
		TIM10  = 1 << 20,
		TIM11  = 1 << 21
	};
	
	inline void enable(AHB_dev dev) {
		AHBENR |= dev;
	}
	
	inline void enable(APB1_dev dev) {
		APB1ENR |= dev;
	}
	
	inline void enable(APB2_dev dev) {
		APB2ENR |= dev;
	}
};

static RCC_t& RCC = *(RCC_t*)0x40021000;

struct STK_t {
	volatile uint32_t CTRL;
	volatile uint32_t LOAD;
	volatile uint32_t VAL;
	volatile uint32_t CALIB;
};

static STK_t& STK = *(STK_t*)0xe000e010;

struct FLASH_t {
	volatile uint32_t ACR;
	volatile uint32_t KEYR;
	volatile uint32_t OPTKEYR;
	volatile uint32_t SR;
	volatile uint32_t CR;
	volatile uint32_t AR;
	volatile uint32_t RESERVED;
	volatile uint32_t OBR;
	volatile uint32_t WRPR;
};

static FLASH_t& FLASH = *(FLASH_t*)0x40022000;

struct GPIO_t {
	volatile uint32_t CRL;
	volatile uint32_t CRH;
	volatile uint32_t IDR;
	volatile uint32_t ODR;
	volatile uint32_t BSRR;
	volatile uint32_t BRR;
	volatile uint32_t LCKR;
};

static GPIO_t& GPIOA = *(GPIO_t*)0x40010800;
static GPIO_t& GPIOB = *(GPIO_t*)0x40010c00;
static GPIO_t& GPIOC = *(GPIO_t*)0x40011000;

struct I2C_t {
	volatile uint32_t CR1;
	volatile uint32_t CR2;
	volatile uint32_t OAR1;
	volatile uint32_t OAR2;
	volatile uint32_t DR;
	volatile uint32_t SR1;
	volatile uint32_t SR2;
	volatile uint32_t CCR;
	volatile uint32_t TRISE;
};

static I2C_t& I2C1 = *(I2C_t*)0x40005400;
static I2C_t& I2C2 = *(I2C_t*)0x40005800;

struct USART_t {
	volatile uint32_t SR;
	volatile uint32_t DR;
	volatile uint32_t BRR;
	volatile uint32_t CR1;
	volatile uint32_t CR2;
	volatile uint32_t CR3;
	volatile uint32_t GTPR;
};

static USART_t& USART1 = *(USART_t*)0x40013800;
static USART_t& USART2 = *(USART_t*)0x40004400;
static USART_t& USART3 = *(USART_t*)0x40004800;

struct TIM_t {
	volatile uint32_t CR1;
	volatile uint32_t CR2;
	volatile uint32_t SMCR;
	volatile uint32_t DIER;
	volatile uint32_t SR;
	volatile uint32_t EGR;
	volatile uint32_t CCMR1;
	volatile uint32_t CCMR2;
	volatile uint32_t CCER;
	volatile uint32_t CNT;
	volatile uint32_t PSC;
	volatile uint32_t ARR;
	volatile uint32_t RCR;
	volatile uint32_t CCR1;
	volatile uint32_t CCR2;
	volatile uint32_t CCR3;
	volatile uint32_t CCR4;
	volatile uint32_t BDTR;
	volatile uint32_t DCR;
	volatile uint32_t DMAR;
};

static TIM_t& TIM1 = *(TIM_t*)0x40012c00;
static TIM_t& TIM2 = *(TIM_t*)0x40000000;
static TIM_t& TIM3 = *(TIM_t*)0x40000400;
static TIM_t& TIM4 = *(TIM_t*)0x40000800;
static TIM_t& TIM5 = *(TIM_t*)0x40000c00;
static TIM_t& TIM6 = *(TIM_t*)0x40001000;
static TIM_t& TIM7 = *(TIM_t*)0x40001400;
static TIM_t& TIM8 = *(TIM_t*)0x40013400;

struct ADC_t {
	volatile uint32_t SR;
	volatile uint32_t CR1;
	volatile uint32_t CR2;
	volatile uint32_t SMPR1;
	volatile uint32_t SMPR2;
	volatile uint32_t JOFR1;
	volatile uint32_t JOFR2;
	volatile uint32_t JOFR3;
	volatile uint32_t JOFR4;
	volatile uint32_t HTR;
	volatile uint32_t LTR;
	volatile uint32_t SQR1;
	volatile uint32_t SQR2;
	volatile uint32_t SQR3;
	volatile uint32_t JSQR;
	volatile uint32_t JDR1;
	volatile uint32_t JDR2;
	volatile uint32_t JDR3;
	volatile uint32_t JDR4;
	volatile uint32_t DR;
};

static ADC_t& ADC1 = *(ADC_t*)0x40012400;
static ADC_t& ADC2 = *(ADC_t*)0x40012800;
static ADC_t& ADC3 = *(ADC_t*)0x40013c00;

struct DMA_t {
	struct CH_t {
		volatile uint32_t CCR;
		volatile uint32_t CNDTR;
		volatile uint32_t CPAR;
		volatile uint32_t CMAR;
		uint32_t _reserved;
	};
	
	volatile uint32_t ISR;
	volatile uint32_t IFCR;
	CH_t CH[7];
};

static DMA_t& DMA1 = *(DMA_t*)0x40020000;
static DMA_t& DMA2 = *(DMA_t*)0x40020400;

#endif