6f418fc1b0
Converts generted pins to use qstrs instead of string pointers.
This patch also adds the following functions:
pyb.Pin.names()
pyb.Pin.af_list()
pyb.Pin.gpio()
dir(pyb.Pin.board) and dir(pyb.Pin.cpu) also produce useful results.
pyb.Pin now takes kw args.
pyb.Pin.__str__ now prints more useful information about the pin
configuration.
I found the following functions in my boot.py to be useful:
```python
def pins():
for pin_name in dir(pyb.Pin.board):
pin = pyb.Pin(pin_name)
print('{:10s} {:s}'.format(pin_name, str(pin)))
def af():
for pin_name in dir(pyb.Pin.board):
pin = pyb.Pin(pin_name)
print('{:10s} {:s}'.format(pin_name, str(pin.af_list())))
```
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
#include <stdint.h>
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#include <mk20dx128.h>
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#include "mpconfig.h"
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#include "nlr.h"
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#include "misc.h"
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#include "qstr.h"
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#include "obj.h"
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#include "runtime.h"
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#include MICROPY_HAL_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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volatile uint32_t *port_pcr = GPIO_PIN_TO_PORT_PCR(pin->gpio, pin->pin);
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uint32_t pcr = *port_pcr;
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uint32_t af = (*port_pcr & PORT_PCR_MUX_MASK) >> 8;;
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if (af == 0) {
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return GPIO_MODE_ANALOG;
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}
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if (af == 1) {
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if (pin->gpio->PDDR & (1 << pin->pin)) {
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if (pcr & PORT_PCR_ODE) {
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return GPIO_MODE_OUTPUT_OD;
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}
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return GPIO_MODE_OUTPUT_PP;
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}
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return GPIO_MODE_INPUT;
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}
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if (pcr & PORT_PCR_ODE) {
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return GPIO_MODE_AF_OD;
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}
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return GPIO_MODE_AF_PP;
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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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volatile uint32_t *port_pcr = GPIO_PIN_TO_PORT_PCR(pin->gpio, pin->pin);
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uint32_t pcr = *port_pcr;
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if (pcr & PORT_PCR_PE) {
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if (pcr & PORT_PCR_PS) {
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return GPIO_PULLUP;
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}
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return GPIO_PULLDOWN;
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}
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return GPIO_NOPULL;
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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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volatile uint32_t *port_pcr = GPIO_PIN_TO_PORT_PCR(pin->gpio, pin->pin);
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return (*port_pcr & PORT_PCR_MUX_MASK) >> 8;
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}
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