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| | | /* |
| | | * Copyright (c) 2019-2023 Beijing Hanwei Innovation Technology Ltd. Co. and |
| | | * its subsidiaries and affiliates (collectly called MKSEMI). |
| | | * |
| | | * All rights reserved. |
| | | * |
| | | * Redistribution and use in source and binary forms, with or without |
| | | * modification, are permitted provided that the following conditions are met: |
| | | * |
| | | * 1. Redistributions of source code must retain the above copyright notice, |
| | | * this list of conditions and the following disclaimer. |
| | | * |
| | | * 2. Redistributions in binary form, except as embedded into an MKSEMI |
| | | * integrated circuit in a product or a software update for such product, |
| | | * must reproduce the above copyright notice, this list of conditions and |
| | | * the following disclaimer in the documentation and/or other materials |
| | | * provided with the distribution. |
| | | * |
| | | * 3. Neither the name of MKSEMI nor the names of its contributors may be used |
| | | * to endorse or promote products derived from this software without |
| | | * specific prior written permission. |
| | | * |
| | | * 4. This software, with or without modification, must only be used with a |
| | | * MKSEMI integrated circuit. |
| | | * |
| | | * 5. Any software provided in binary form under this license must not be |
| | | * reverse engineered, decompiled, modified and/or disassembled. |
| | | * |
| | | * THIS SOFTWARE IS PROVIDED BY MKSEMI "AS IS" AND ANY EXPRESS OR IMPLIED |
| | | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| | | * MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| | | * DISCLAIMED. IN NO EVENT SHALL MKSEMI OR CONTRIBUTORS BE LIABLE FOR ANY |
| | | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| | | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| | | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| | | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| | | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| | | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| | | */ |
| | | |
| | | #include "mk_gpio.h" |
| | | #include "mk_clock.h" |
| | | #include "mk_reset.h" |
| | | #include "mk_trace.h" |
| | | |
| | | struct GPIO_HANDLE_T |
| | | { |
| | | GPIO_TypeDef *const base; |
| | | const IRQn_Type irq; |
| | | uint32_t irq_mask; |
| | | GPIO_IRQ_HANDLER_T irq_handler[IO_PIN_MAX]; |
| | | }; |
| | | |
| | | static struct GPIO_HANDLE_T gpio_handle[GPIO_MAX_NUM] = { |
| | | { |
| | | .base = GPIO, |
| | | .irq = GPIO_IRQn, |
| | | .irq_mask = 0, |
| | | .irq_handler = {0}, |
| | | }, |
| | | }; |
| | | |
| | | int gpio_open(void) |
| | | { |
| | | // enable GPIO clock |
| | | clock_enable(CLOCK_GPIO); |
| | | reset_module(RESET_MODULE_GPIO); |
| | | return DRV_OK; |
| | | } |
| | | |
| | | int gpio_close(void) |
| | | { |
| | | // disable GPIO clock |
| | | clock_disable(CLOCK_GPIO); |
| | | return DRV_OK; |
| | | } |
| | | |
| | | void gpio_write(uint32_t value) |
| | | { |
| | | gpio_handle[0].base->DATAOUT = value; |
| | | } |
| | | |
| | | uint32_t gpio_read(void) |
| | | { |
| | | return gpio_handle[0].base->DATA; |
| | | } |
| | | |
| | | void gpio_pin_set(enum IO_PIN_T pin) |
| | | { |
| | | gpio_handle[0].base->DATAOUT = gpio_handle[0].base->DATAOUT | (1U << pin); |
| | | } |
| | | |
| | | void gpio_pin_clr(enum IO_PIN_T pin) |
| | | { |
| | | gpio_handle[0].base->DATAOUT = gpio_handle[0].base->DATAOUT & (~(1U << pin)); |
| | | } |
| | | |
| | | void gpio_pin_toggle(enum IO_PIN_T pin) |
| | | { |
| | | gpio_handle[0].base->DATAOUT = gpio_handle[0].base->DATAOUT ^ (1U << pin); |
| | | } |
| | | |
| | | uint8_t gpio_pin_get_val(enum IO_PIN_T pin) |
| | | { |
| | | return (((gpio_handle[0].base->DATA) >> pin) & 0x1U); |
| | | } |
| | | |
| | | void gpio_pin_set_dir(enum IO_PIN_T pin, enum GPIO_DIR_T dir, uint8_t out_val) |
| | | { |
| | | if (dir == GPIO_DIR_IN) |
| | | { |
| | | SYSCON->IO_EI |= (1U << pin); |
| | | gpio_handle[0].base->OUTENCLR = (1U << pin); |
| | | } |
| | | else if (dir == GPIO_DIR_OUT) |
| | | { |
| | | if (out_val) |
| | | { |
| | | gpio_pin_set(pin); |
| | | } |
| | | else |
| | | { |
| | | gpio_pin_clr(pin); |
| | | } |
| | | gpio_handle[0].base->OUTENSET = (1U << pin); |
| | | } |
| | | else |
| | | { |
| | | SYSCON->IO_EI &= ~(1U << pin); |
| | | gpio_handle[0].base->OUTENCLR = (1U << pin); |
| | | } |
| | | } |
| | | |
| | | void gpio_enable_irq(enum IO_PIN_T pin, enum GPIO_IRQ_TYPE_T irq_type, GPIO_IRQ_HANDLER_T irq_handler) |
| | | { |
| | | switch (irq_type) |
| | | { |
| | | case GPIO_IRQ_TYPE_LOW_LEVEL: |
| | | gpio_handle[0].base->INTPOLCLR = (1U << pin); |
| | | gpio_handle[0].base->INTTYPECLR = (1U << pin); |
| | | break; |
| | | case GPIO_IRQ_TYPE_HIGH_LEVEL: |
| | | gpio_handle[0].base->INTPOLSET = (1U << pin); |
| | | gpio_handle[0].base->INTTYPECLR = (1U << pin); |
| | | break; |
| | | case GPIO_IRQ_TYPE_FALLING_EDGE: |
| | | gpio_handle[0].base->INTPOLCLR = (1U << pin); |
| | | gpio_handle[0].base->INTTYPESET = (1U << pin); |
| | | break; |
| | | case GPIO_IRQ_TYPE_RISING_EDGE: |
| | | gpio_handle[0].base->INTPOLSET = (1U << pin); |
| | | gpio_handle[0].base->INTTYPESET = (1U << pin); |
| | | break; |
| | | } |
| | | |
| | | gpio_handle[0].irq_handler[pin] = irq_handler; |
| | | |
| | | if (gpio_handle[0].irq_mask == 0) |
| | | { |
| | | NVIC_SetPriority(gpio_handle[0].irq, IRQ_PRIORITY_NORMAL); |
| | | NVIC_ClearPendingIRQ(gpio_handle[0].irq); |
| | | NVIC_EnableIRQ(gpio_handle[0].irq); |
| | | } |
| | | gpio_handle[0].irq_mask |= (1U << pin); |
| | | |
| | | gpio_handle[0].base->INTENSET = (1U << pin); |
| | | } |
| | | |
| | | void gpio_disable_irq(enum IO_PIN_T pin) |
| | | { |
| | | gpio_handle[0].base->INTENCLR = (1U << pin); |
| | | gpio_handle[0].irq_mask &= ~(1U << pin); |
| | | if (gpio_handle[0].irq_mask == 0) |
| | | { |
| | | NVIC_DisableIRQ(gpio_handle[0].irq); |
| | | NVIC_ClearPendingIRQ(gpio_handle[0].irq); |
| | | } |
| | | } |
| | | |
| | | void GPIO_IRQHandler(void) |
| | | { |
| | | uint32_t int_stat = gpio_handle[0].base->INTSTATUS; |
| | | |
| | | for (enum IO_PIN_T i = 0; i < IO_PIN_MAX; i++) |
| | | { |
| | | if ((int_stat & (1U << i)) && (gpio_handle[0].irq_handler[i])) |
| | | { |
| | | gpio_handle[0].irq_handler[i](i); |
| | | gpio_handle[0].base->INTSTATUS = (1 << i); |
| | | } |
| | | } |
| | | } |