/**
 * @file stm8s003_registers.h
 * @brief STM8S003F3 常用外设寄存器的最小定义集。
 *
 * 本工程暂不引入完整厂商库，先使用经过数据手册地址核对的最小寄存器集。
 * 后续如果切换到 ST 标准外设库，只应替换本文件和 drivers 层，不改变业务层接口。
 */
#ifndef STM8S003_REGISTERS_H
#define STM8S003_REGISTERS_H

#include <stdint.h>

/* GPIO 端口寄存器布局：ODR、IDR、DDR、CR1、CR2。 */
#define GPIOA_ODR_ADDR 0x5000u
#define GPIOA_IDR_ADDR 0x5001u
#define GPIOA_DDR_ADDR 0x5002u
#define GPIOA_CR1_ADDR 0x5003u
#define GPIOA_CR2_ADDR 0x5004u
#define GPIOB_ODR_ADDR 0x5005u
#define GPIOB_IDR_ADDR 0x5006u
#define GPIOB_DDR_ADDR 0x5007u
#define GPIOB_CR1_ADDR 0x5008u
#define GPIOB_CR2_ADDR 0x5009u
#define GPIOC_ODR_ADDR 0x500Au
#define GPIOC_IDR_ADDR 0x500Bu
#define GPIOC_DDR_ADDR 0x500Cu
#define GPIOC_CR1_ADDR 0x500Du
#define GPIOC_CR2_ADDR 0x500Eu
#define GPIOD_ODR_ADDR 0x500Fu
#define GPIOD_IDR_ADDR 0x5010u
#define GPIOD_DDR_ADDR 0x5011u
#define GPIOD_CR1_ADDR 0x5012u
#define GPIOD_CR2_ADDR 0x5013u
#define SPI1_CR1_ADDR 0x5200u
#define SPI1_CR2_ADDR 0x5201u
#define SPI1_SR_ADDR  0x5203u
#define SPI1_DR_ADDR  0x5204u

/* UART1 寄存器地址。 */
#define UART1_SR_ADDR  0x5230u
#define UART1_DR_ADDR  0x5231u
#define UART1_BRR1_ADDR 0x5232u
#define UART1_BRR2_ADDR 0x5233u
#define UART1_CR1_ADDR 0x5234u
#define UART1_CR2_ADDR 0x5235u
#define UART1_CR3_ADDR 0x5236u
#define UART1_CR4_ADDR 0x5237u
#define UART1_CR5_ADDR 0x5238u

/* ADC1 寄存器地址。 */
#define ADC1_CSR_ADDR  0x5400u
#define ADC1_CR1_ADDR  0x5401u
#define ADC1_CR2_ADDR  0x5402u
#define ADC1_CR3_ADDR  0x5403u
#define ADC1_DRH_ADDR  0x5404u
#define ADC1_DRL_ADDR  0x5405u

/* TIM4 低功耗 8 位定时器寄存器地址。 */
#define TIM4_CR1_ADDR  0x5340u
#define TIM4_IER_ADDR  0x5343u
#define TIM4_SR1_ADDR  0x5344u
#define TIM4_EGR_ADDR  0x5345u
#define TIM4_CNTR_ADDR 0x5346u
#define TIM4_PSCR_ADDR 0x5347u
#define TIM4_ARR_ADDR  0x5348u

/* 独立看门狗寄存器。 */
#define IWDG_KR_ADDR   0x50E0u
#define IWDG_PR_ADDR   0x50E1u
#define IWDG_RLR_ADDR  0x50E2u

#define REG8(address) (*((volatile uint8_t *)(address)))

#define PA1_MASK 0x02u
#define PA2_MASK 0x04u
#define PC3_MASK 0x08u
#define PC4_MASK 0x10u
/** PC4 在 STM8S003F3P6 上对应 ADC1 的 AIN2 通道。 */
#define ADC1_CHANNEL_PC4 2u
#define PD3_MASK 0x08u
#define PD5_MASK 0x20u
#define PD6_MASK 0x40u
#define PC5_MASK 0x20u
#define PC6_MASK 0x40u
#define PC7_MASK 0x80u
#define PD2_MASK 0x04u
#define PD4_MASK 0x10u
#define PB5_MASK 0x20u
#define PB4_MASK 0x10u

#define SPI1_CR1 REG8(SPI1_CR1_ADDR)
#define SPI1_CR2 REG8(SPI1_CR2_ADDR)
#define SPI1_SR  REG8(SPI1_SR_ADDR)
#define SPI1_DR  REG8(SPI1_DR_ADDR)
#define SPI_CR1_SPE  0x40u
#define SPI_CR1_MSTR 0x04u
#define SPI_CR1_BR0  0x08u
#define SPI_CR1_BR1  0x10u
#define SPI_CR1_BR2  0x20u
#define SPI_CR2_SSI  0x01u
#define SPI_CR2_SSM  0x02u
#define SPI_SR_RXNE  0x01u
#define SPI_SR_TXE   0x02u

#endif