55 lines
2.3 KiB
C
55 lines
2.3 KiB
C
// We use the ST Cube HAL library for most hardware peripherals
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#include STM32_HAL_H
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#include "pin.h"
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// The unique id address differs per MCU. Ideally this define should
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// go in some MCU-specific header, but for now it lives here.
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#if defined(MCU_SERIES_F4)
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#define MP_HAL_UNIQUE_ID_ADDRESS (0x1fff7a10)
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#elif defined(MCU_SERIES_F7)
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#define MP_HAL_UNIQUE_ID_ADDRESS (0x1ff0f420)
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#elif defined(MCU_SERIES_L4)
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#define MP_HAL_UNIQUE_ID_ADDRESS (0x1fff7590)
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#else
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#error mphalport.h: Unrecognized MCU_SERIES
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#endif
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// Basic GPIO functions
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#define GPIO_read_pin(gpio, pin) (((gpio)->IDR >> (pin)) & 1)
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#if defined(MCU_SERIES_F7) || defined(MCU_SERIES_L4)
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#define GPIO_set_pin(gpio, pin_mask) (((gpio)->BSRR) = (pin_mask))
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#define GPIO_clear_pin(gpio, pin_mask) (((gpio)->BSRR) = ((pin_mask) << 16))
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#else
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#define GPIO_set_pin(gpio, pin_mask) (((gpio)->BSRRL) = (pin_mask))
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#define GPIO_clear_pin(gpio, pin_mask) (((gpio)->BSRRH) = (pin_mask))
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#endif
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#define GPIO_read_output_pin(gpio, pin) (((gpio)->ODR >> (pin)) & 1)
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void mp_hal_gpio_clock_enable(GPIO_TypeDef *gpio);
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void mp_hal_gpio_config(GPIO_TypeDef *gpio, uint32_t pin, uint32_t mode, uint32_t pull, uint32_t alt);
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bool mp_hal_gpio_set_af(const pin_obj_t *pin, GPIO_InitTypeDef *init, uint8_t fn, uint8_t unit);
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extern const unsigned char mp_hal_status_to_errno_table[4];
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NORETURN void mp_hal_raise(HAL_StatusTypeDef status);
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void mp_hal_set_interrupt_char(int c); // -1 to disable
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// timing functions
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#include "stmhal/systick.h"
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#define mp_hal_delay_ms HAL_Delay
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#define mp_hal_delay_us_fast(us) sys_tick_udelay(us)
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#define mp_hal_ticks_ms HAL_GetTick
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#define mp_hal_ticks_us() sys_tick_get_microseconds()
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// C-level pin HAL
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#include "stmhal/pin.h"
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#define mp_hal_pin_obj_t const pin_obj_t*
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#define mp_hal_get_pin_obj(o) pin_find(o)
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#define mp_hal_pin_input(p) mp_hal_gpio_config((p)->gpio, (p)->pin, 0, 0, 0)
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#define mp_hal_pin_output(p) mp_hal_gpio_config((p)->gpio, (p)->pin, 1, 0, 0)
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#define mp_hal_pin_open_drain(p) mp_hal_gpio_config((p)->gpio, (p)->pin, 5, 0, 0)
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#define mp_hal_pin_od_low(p) GPIO_clear_pin((p)->gpio, (p)->pin_mask)
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#define mp_hal_pin_od_high(p) GPIO_set_pin((p)->gpio, (p)->pin_mask)
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#define mp_hal_pin_read(p) GPIO_read_pin((p)->gpio, (p)->pin)
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#define mp_hal_pin_write(p, v) do { if (v) { GPIO_set_pin((p)->gpio, (p)->pin_mask); } else { GPIO_clear_pin((p)->gpio, (p)->pin_mask); } } while (0)
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