1a0b4193b7
This also removes the need to pin share because we don't use the status LED while user code is running. The status flashes fallback to the HW_STATUS LED if no RGB LED is present. Each status has a unique blink pattern as well. One caveat is the REPL state. In order to not pin share, we set the RGB color once. PWM and single color will be shutoff immediately but DotStars and NeoPixels will hold the color until the user overrides it. Fixes #4133
112 lines
3.5 KiB
C
112 lines
3.5 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 Scott Shawcroft for Adafruit Industries
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* Copyright (c) 2019 Lucian Copeland for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/digitalio/DigitalInOut.h"
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#include "py/mphal.h"
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#include "components/driver/include/driver/gpio.h"
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#include "components/soc/include/hal/gpio_hal.h"
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STATIC uint32_t never_reset_pins[2];
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STATIC uint32_t in_use[2];
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STATIC void floating_gpio_reset(gpio_num_t pin_number) {
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// This is the same as gpio_reset_pin(), but without the pullup.
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// Note that gpio_config resets the iomatrix to GPIO_FUNC as well.
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gpio_config_t cfg = {
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.pin_bit_mask = BIT64(pin_number),
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.mode = GPIO_MODE_DISABLE,
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.pull_up_en = false,
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.pull_down_en = false,
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.intr_type = GPIO_INTR_DISABLE,
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};
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gpio_config(&cfg);
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PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[pin_number], 0);
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}
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void never_reset_pin_number(gpio_num_t pin_number) {
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if (pin_number == -1) {
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return;
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}
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never_reset_pins[pin_number / 32] |= 1 << pin_number % 32;
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}
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void common_hal_never_reset_pin(const mcu_pin_obj_t *pin) {
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never_reset_pin_number(pin->number);
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}
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// Mark pin as free and return it to a quiescent state.
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void reset_pin_number(gpio_num_t pin_number) {
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if (pin_number == -1) {
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return;
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}
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never_reset_pins[pin_number / 32] &= ~(1 << pin_number % 32);
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in_use[pin_number / 32] &= ~(1 << pin_number % 32);
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floating_gpio_reset(pin_number);
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}
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void common_hal_reset_pin(const mcu_pin_obj_t *pin) {
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if (pin == NULL) {
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return;
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}
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reset_pin_number(pin->number);
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}
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void reset_all_pins(void) {
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for (uint8_t i = 0; i < GPIO_PIN_COUNT; i++) {
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uint32_t iomux_address = GPIO_PIN_MUX_REG[i];
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if (iomux_address == 0 ||
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(never_reset_pins[i / 32] & (1 << i % 32)) != 0) {
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continue;
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}
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floating_gpio_reset(i);
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}
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in_use[0] = 0;
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in_use[1] = 0;
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}
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void claim_pin(const mcu_pin_obj_t *pin) {
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in_use[pin->number / 32] |= (1 << (pin->number % 32));
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}
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void common_hal_mcu_pin_claim(const mcu_pin_obj_t *pin) {
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claim_pin(pin);
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}
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bool pin_number_is_free(gpio_num_t pin_number) {
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uint8_t offset = pin_number / 32;
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uint32_t mask = 1 << (pin_number % 32);
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return (in_use[offset] & mask) == 0;
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}
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bool common_hal_mcu_pin_is_free(const mcu_pin_obj_t *pin) {
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return pin_number_is_free(pin->number);
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}
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