989fc16162
It's cleaner to have all the MCU-specific configuration in one location, not least to help with adding support for a new MCU series.
58 lines
2.3 KiB
C
58 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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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 "irq.h"
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#define mp_hal_quiet_timing_enter() raise_irq_pri(1)
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#define mp_hal_quiet_timing_exit(irq_state) restore_irq_pri(irq_state)
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#define mp_hal_delay_us_fast(us) mp_hal_delay_us(us)
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extern bool mp_hal_ticks_cpu_enabled;
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void mp_hal_ticks_cpu_enable(void);
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static inline mp_uint_t mp_hal_ticks_cpu(void) {
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if (!mp_hal_ticks_cpu_enabled) {
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mp_hal_ticks_cpu_enable();
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}
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return DWT->CYCCNT;
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}
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// C-level pin HAL
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#include "pin.h"
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#define MP_HAL_PIN_FMT "%q"
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#define MP_HAL_PIN_MODE_INPUT (0)
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#define MP_HAL_PIN_MODE_OUTPUT (1)
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#define MP_HAL_PIN_MODE_ALT (2)
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#define MP_HAL_PIN_MODE_ANALOG (3)
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#define MP_HAL_PIN_MODE_OPEN_DRAIN (5)
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#define MP_HAL_PIN_MODE_ALT_OPEN_DRAIN (6)
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#define MP_HAL_PIN_PULL_NONE (GPIO_NOPULL)
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#define MP_HAL_PIN_PULL_UP (GPIO_PULLUP)
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#define MP_HAL_PIN_PULL_DOWN (GPIO_PULLDOWN)
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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_name(p) ((p)->name)
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#define mp_hal_pin_input(p) mp_hal_pin_config((p), MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_NONE, 0)
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#define mp_hal_pin_output(p) mp_hal_pin_config((p), MP_HAL_PIN_MODE_OUTPUT, MP_HAL_PIN_PULL_NONE, 0)
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#define mp_hal_pin_open_drain(p) mp_hal_pin_config((p), MP_HAL_PIN_MODE_OPEN_DRAIN, MP_HAL_PIN_PULL_NONE, 0)
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#define mp_hal_pin_high(p) (((p)->gpio->BSRR) = (p)->pin_mask)
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#define mp_hal_pin_low(p) (((p)->gpio->BSRR) = ((p)->pin_mask << 16))
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#define mp_hal_pin_od_low(p) mp_hal_pin_low(p)
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#define mp_hal_pin_od_high(p) mp_hal_pin_high(p)
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#define mp_hal_pin_read(p) (((p)->gpio->IDR >> (p)->pin) & 1)
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#define mp_hal_pin_write(p, v) do { if (v) { mp_hal_pin_high(p); } else { mp_hal_pin_low(p); } } while (0)
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void mp_hal_gpio_clock_enable(GPIO_TypeDef *gpio);
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void mp_hal_pin_config(mp_hal_pin_obj_t pin, uint32_t mode, uint32_t pull, uint32_t alt);
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bool mp_hal_pin_config_alt(mp_hal_pin_obj_t pin, uint32_t mode, uint32_t pull, uint8_t fn, uint8_t unit);
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