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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/runtime.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "supervisor/shared/rgb_led_status.h"
#include "src/rp2_common/hardware_gpio/include/hardware/gpio.h"
#ifdef MICROPY_HW_NEOPIXEL
bool neopixel_in_use;
#endif
#ifdef MICROPY_HW_APA102_MOSI
bool apa102_sck_in_use;
bool apa102_mosi_in_use;
#endif
#ifdef SPEAKER_ENABLE_PIN
bool speaker_enable_in_use;
#endif
STATIC uint32_t never_reset_pins;
void reset_all_pins(void) {
for (size_t i = 0; i < 30; i++) {
if ((never_reset_pins & (1 << i)) != 0) {
continue;
}
reset_pin_number(i);
}
}
void never_reset_pin_number(uint8_t pin_number) {
if (pin_number >= 32) {
return;
}
never_reset_pins |= 1 << pin_number;
}
void reset_pin_number(uint8_t pin_number) {
if (pin_number >= 32
#if TUD_OPT_RP2040_USB_DEVICE_ENUMERATION_FIX
// Pin 15 is used for Errata so we don't mess with it.
|| pin_number == 15
#endif
) {
return;
}
never_reset_pins &= ~(1 << pin_number);
// We are very aggressive in shutting down the pad fully. Both pulls are
// disabled and both buffers are as well.
gpio_init(pin_number);
hw_clear_bits(&padsbank0_hw->io[pin_number], PADS_BANK0_GPIO0_IE_BITS |
PADS_BANK0_GPIO0_PUE_BITS |
PADS_BANK0_GPIO0_PDE_BITS);
hw_set_bits(&padsbank0_hw->io[pin_number], PADS_BANK0_GPIO0_OD_BITS);
#ifdef MICROPY_HW_NEOPIXEL
if (pin_number == MICROPY_HW_NEOPIXEL->number) {
neopixel_in_use = false;
rgb_led_status_init();
return;
}
#endif
#ifdef MICROPY_HW_APA102_MOSI
if (pin_number == MICROPY_HW_APA102_MOSI->number ||
pin_number == MICROPY_HW_APA102_SCK->number) {
apa102_mosi_in_use = apa102_mosi_in_use && pin_number != MICROPY_HW_APA102_MOSI->number;
apa102_sck_in_use = apa102_sck_in_use && pin_number != MICROPY_HW_APA102_SCK->number;
if (!apa102_sck_in_use && !apa102_mosi_in_use) {
rgb_led_status_init();
}
return;
}
#endif
#ifdef SPEAKER_ENABLE_PIN
if (pin_number == SPEAKER_ENABLE_PIN->number) {
speaker_enable_in_use = false;
}
#endif
}
void common_hal_never_reset_pin(const mcu_pin_obj_t* pin) {
never_reset_pin_number(pin->number);
}
void common_hal_reset_pin(const mcu_pin_obj_t* pin) {
reset_pin_number(pin->number);
}
void claim_pin(const mcu_pin_obj_t* pin) {
#ifdef MICROPY_HW_NEOPIXEL
if (pin == MICROPY_HW_NEOPIXEL) {
neopixel_in_use = true;
}
#endif
#ifdef MICROPY_HW_APA102_MOSI
if (pin == MICROPY_HW_APA102_MOSI) {
apa102_mosi_in_use = true;
}
if (pin == MICROPY_HW_APA102_SCK) {
apa102_sck_in_use = true;
}
#endif
#ifdef SPEAKER_ENABLE_PIN
if (pin == SPEAKER_ENABLE_PIN) {
speaker_enable_in_use = true;
}
#endif
}
bool pin_number_is_free(uint8_t pin_number) {
if (pin_number >= 30) {
return false;
}
#if TUD_OPT_RP2040_USB_DEVICE_ENUMERATION_FIX
// Pin 15 is used for Errata so we don't mess with it.
if (pin_number == 15) {
return true;
}
#endif
uint32_t pad_state = padsbank0_hw->io[pin_number];
return (pad_state & PADS_BANK0_GPIO0_IE_BITS) == 0 &&
(pad_state & PADS_BANK0_GPIO0_OD_BITS) != 0;
}
bool common_hal_mcu_pin_is_free(const mcu_pin_obj_t* pin) {
#ifdef MICROPY_HW_NEOPIXEL
if (pin == MICROPY_HW_NEOPIXEL) {
return !neopixel_in_use;
}
#endif
#ifdef MICROPY_HW_APA102_MOSI
if (pin == MICROPY_HW_APA102_MOSI) {
return !apa102_mosi_in_use;
}
if (pin == MICROPY_HW_APA102_SCK) {
return !apa102_sck_in_use;
}
#endif
#ifdef SPEAKER_ENABLE_PIN
if (pin == SPEAKER_ENABLE_PIN) {
return !speaker_enable_in_use;
}
#endif
return pin_number_is_free(pin->number);
}
uint8_t common_hal_mcu_pin_number(const mcu_pin_obj_t* pin) {
return pin->number;
}
void common_hal_mcu_pin_claim(const mcu_pin_obj_t* pin) {
return claim_pin(pin);
}
void common_hal_mcu_pin_reset_number(uint8_t pin_no) {
reset_pin_number(pin_no);
}
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