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32 lines
947 B
C
32 lines
947 B
C
#include "py/obj.h"
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#include "pin.h"
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// Returns the pin mode. This value returned by this macro should be one of:
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// GPIO_MODE_INPUT, GPIO_MODE_OUTPUT_PP, GPIO_MODE_OUTPUT_OD,
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// GPIO_MODE_AF_PP, GPIO_MODE_AF_OD, or GPIO_MODE_ANALOG.
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uint32_t pin_get_mode(const pin_obj_t *pin) {
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GPIO_TypeDef *gpio = pin->gpio;
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uint32_t mode = (gpio->MODER >> (pin->pin * 2)) & 3;
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if (mode != GPIO_MODE_ANALOG) {
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if (gpio->OTYPER & pin->pin_mask) {
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mode |= 1 << 4;
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}
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}
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return mode;
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}
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// Returns the pin pullup/pulldown. The value returned by this macro should
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// be one of GPIO_NOPULL, GPIO_PULLUP, or GPIO_PULLDOWN.
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uint32_t pin_get_pull(const pin_obj_t *pin) {
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return (pin->gpio->PUPDR >> (pin->pin * 2)) & 3;
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}
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// Returns the af (alternate function) index currently set for a pin.
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uint32_t pin_get_af(const pin_obj_t *pin) {
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return (pin->gpio->AFR[pin->pin >> 3] >> ((pin->pin & 7) * 4)) & 0xf;
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}
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