mirror of
https://github.com/keirf/greaseweazle-firmware.git
synced 2025-10-31 11:06:44 -07:00
119 lines
3.7 KiB
C
119 lines
3.7 KiB
C
/*
|
|
* stm32/common.h
|
|
*
|
|
* Core and peripheral registers.
|
|
*
|
|
* Written & released by Keir Fraser <keir.xen@gmail.com>
|
|
*
|
|
* This is free and unencumbered software released into the public domain.
|
|
* See the file COPYING for more details, or visit <http://unlicense.org>.
|
|
*/
|
|
|
|
/* C pointer types */
|
|
#define STK volatile struct stk * const
|
|
#define SCB volatile struct scb * const
|
|
#define NVIC volatile struct nvic * const
|
|
#define DBG volatile struct dbg * const
|
|
#define FLASH volatile struct flash * const
|
|
#define PWR volatile struct pwr * const
|
|
#define RCC volatile struct rcc * const
|
|
#define IWDG volatile struct iwdg * const
|
|
#define GPIO volatile struct gpio * const
|
|
#define EXTI volatile struct exti * const
|
|
#define DMA volatile struct dma * const
|
|
#define TIM volatile struct tim * const
|
|
#define SPI volatile struct spi * const
|
|
#define I2C volatile struct i2c * const
|
|
#define USART volatile struct usart * const
|
|
#define SER_ID volatile uint32_t * const
|
|
|
|
/* NVIC table */
|
|
extern uint32_t vector_table[];
|
|
|
|
/* System */
|
|
void stm32_init(void);
|
|
void stm32_bootloader_enter(void);
|
|
void system_reset(void);
|
|
|
|
/* Clocks */
|
|
#define SYSCLK (SYSCLK_MHZ * 1000000)
|
|
#define sysclk_ns(x) (((x) * SYSCLK_MHZ) / 1000)
|
|
#define sysclk_us(x) ((x) * SYSCLK_MHZ)
|
|
#define sysclk_ms(x) ((x) * SYSCLK_MHZ * 1000)
|
|
#define sysclk_stk(x) ((x) * (SYSCLK_MHZ / STK_MHZ))
|
|
|
|
/* SysTick Timer */
|
|
#define STK_MHZ (SYSCLK_MHZ / 8)
|
|
void delay_ticks(unsigned int ticks);
|
|
void delay_ns(unsigned int ns);
|
|
void delay_us(unsigned int us);
|
|
void delay_ms(unsigned int ms);
|
|
|
|
typedef uint32_t stk_time_t;
|
|
#define stk_now() (stk->val)
|
|
#define stk_diff(x,y) (((x)-(y)) & STK_MASK) /* d = y - x */
|
|
#define stk_add(x,d) (((x)-(d)) & STK_MASK) /* y = x + d */
|
|
#define stk_sub(x,d) (((x)+(d)) & STK_MASK) /* y = x - d */
|
|
#define stk_timesince(x) stk_diff(x,stk_now())
|
|
|
|
#define stk_us(x) ((x) * STK_MHZ)
|
|
#define stk_ms(x) stk_us((x) * 1000)
|
|
#define stk_sysclk(x) ((x) / (SYSCLK_MHZ / STK_MHZ))
|
|
|
|
/* NVIC */
|
|
#define IRQx_enable(x) do { \
|
|
barrier(); \
|
|
nvic->iser[(x)>>5] = 1u<<((x)&31); \
|
|
} while (0)
|
|
#define IRQx_disable(x) do { \
|
|
nvic->icer[(x)>>5] = 1u<<((x)&31); \
|
|
cpu_sync(); \
|
|
} while (0)
|
|
#define IRQx_is_enabled(x) ((nvic->iser[(x)>>5]>>((x)&31))&1)
|
|
#define IRQx_set_pending(x) (nvic->ispr[(x)>>5] = 1u<<((x)&31))
|
|
#define IRQx_clear_pending(x) (nvic->icpr[(x)>>5] = 1u<<((x)&31))
|
|
#define IRQx_is_pending(x) ((nvic->ispr[(x)>>5]>>((x)&31))&1)
|
|
#define IRQx_set_prio(x,y) (nvic->ipr[x] = (y) << 4)
|
|
#define IRQx_get_prio(x) (nvic->ipr[x] >> 4)
|
|
|
|
/* GPIO */
|
|
struct gpio;
|
|
void gpio_configure_pin(GPIO gpio, unsigned int pin, unsigned int mode);
|
|
#define gpio_write_pin(gpio, pin, level) \
|
|
((gpio)->bsrr = ((level) ? 0x1u : 0x10000u) << (pin))
|
|
#define gpio_write_pins(gpio, mask, level) \
|
|
((gpio)->bsrr = (uint32_t)(mask) << ((level) ? 0 : 16))
|
|
#define gpio_read_pin(gpio, pin) (((gpio)->idr >> (pin)) & 1)
|
|
bool_t gpio_pins_connected(GPIO gpio1, unsigned int pin1,
|
|
GPIO gpio2, unsigned int pin2);
|
|
|
|
/* FPEC */
|
|
void fpec_init(void);
|
|
void fpec_page_erase(uint32_t flash_address);
|
|
void fpec_write(const void *data, unsigned int size, uint32_t flash_address);
|
|
|
|
/* Pin mappings */
|
|
enum { _A = 0, _B, _C, _D, _E, _F, _G, _H, _I };
|
|
enum { _OD = 0, _PP };
|
|
struct pin_mapping {
|
|
uint8_t pin_id;
|
|
uint8_t gpio_bank;
|
|
uint8_t gpio_pin;
|
|
bool_t push_pull;
|
|
};
|
|
GPIO gpio_from_id(uint8_t id);
|
|
uint8_t write_mapped_pin(
|
|
const struct pin_mapping *map, int pin_id, bool_t level);
|
|
uint8_t read_mapped_pin(
|
|
const struct pin_mapping *map, int pin_id, bool_t *p_level);
|
|
|
|
/*
|
|
* Local variables:
|
|
* mode: C
|
|
* c-file-style: "Linux"
|
|
* c-basic-offset: 4
|
|
* tab-width: 4
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*/
|