esp-idf/components/hal/esp32h2/include/hal/gpio_ll.h

/*
 * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/*******************************************************************************
 * NOTICE
 * The hal is not public api, don't use in application code.
 * See readme.md in soc/include/hal/readme.md
 ******************************************************************************/

// The LL layer for ESP32-H2 GPIO register operations

#pragma once

#include "soc/soc.h"
#include "soc/gpio_periph.h"
#include "soc/rtc_cntl_reg.h"
#include "soc/gpio_struct.h"
#include "hal/gpio_types.h"
#include "stdlib.h"

#ifdef __cplusplus
extern "C" {
#endif

/*
 * The following defines are used to disable USB JTAG when pins 18 and pins 19
 * are set to be used as GPIO.
 * See gpio_pad_select_gpio() below.
 *
 * TODO: Delete these definitions once the USB device registers definition is
 * merged.
 */
#define USB_DEVICE_CONF0_REG        (0x60043018)
#define USB_DEVICE_USB_PAD_ENABLE   (BIT(14))

// Get GPIO hardware instance with giving gpio num
#define GPIO_LL_GET_HW(num) (((num) == 0) ? (&GPIO) : NULL)

#define GPIO_LL_PRO_CPU_INTR_ENA      (BIT(0))
#define GPIO_LL_PRO_CPU_NMI_INTR_ENA  (BIT(1))
/**
  * @brief Enable pull-up on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_pullup_en(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    REG_SET_BIT(GPIO_PIN_MUX_REG[gpio_num], FUN_PU);
}

/**
  * @brief Disable pull-up on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_pullup_dis(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    REG_CLR_BIT(GPIO_PIN_MUX_REG[gpio_num], FUN_PU);
}

/**
  * @brief Enable pull-down on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_pulldown_en(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    REG_SET_BIT(GPIO_PIN_MUX_REG[gpio_num], FUN_PD);
}

/**
  * @brief Disable pull-down on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_pulldown_dis(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    REG_CLR_BIT(GPIO_PIN_MUX_REG[gpio_num], FUN_PD);
}

/**
 * @brief  GPIO set interrupt trigger type
 *
 * @param  hw Peripheral GPIO hardware instance address.
 * @param  gpio_num GPIO number. If you want to set the trigger type of e.g. of GPIO16, gpio_num should be GPIO_NUM_16 (16);
 * @param  intr_type Interrupt type, select from gpio_int_type_t
 */
static inline void gpio_ll_set_intr_type(gpio_dev_t *hw, gpio_num_t gpio_num, gpio_int_type_t intr_type)
{
    hw->pin[gpio_num].int_type = intr_type;
}

/**
  * @brief Get GPIO interrupt status
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param core_id interrupt core id
  * @param status interrupt status
  */
static inline void gpio_ll_get_intr_status(gpio_dev_t *hw, uint32_t core_id, uint32_t *status)
{
    *status = hw->pcpu_int.intr;
}

/**
  * @brief Get GPIO interrupt status high
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param core_id interrupt core id
  * @param status interrupt status high
  */
static inline void gpio_ll_get_intr_status_high(gpio_dev_t *hw, uint32_t core_id, uint32_t *status)
{
    *status = 0; // Less than 32 GPIOs in ESP32-H2
}

/**
  * @brief Clear GPIO interrupt status
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param mask interrupt status clear mask
  */
static inline void gpio_ll_clear_intr_status(gpio_dev_t *hw, uint32_t mask)
{
    hw->status_w1tc.status_w1tc = mask;
}

/**
  * @brief Clear GPIO interrupt status high
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param mask interrupt status high clear mask
  */
static inline void gpio_ll_clear_intr_status_high(gpio_dev_t *hw, uint32_t mask)
{
    // Not supported on C3
}

/**
 * @brief  Enable GPIO module interrupt signal
 *
 * @param  hw Peripheral GPIO hardware instance address.
 * @param  core_id Interrupt enabled CPU to corresponding ID
 * @param  gpio_num GPIO number. If you want to enable the interrupt of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
 */
static inline void gpio_ll_intr_enable_on_core(gpio_dev_t *hw, uint32_t core_id, gpio_num_t gpio_num)
{
    if (core_id == 0) {
        GPIO.pin[gpio_num].int_ena = GPIO_LL_PRO_CPU_INTR_ENA;     //enable pro cpu intr
    } else {
        // GPIO.pin[gpio_num].int_ena = GPIO_APP_CPU_INTR_ENA;     //enable pro cpu intr
    }
}

/**
 * @brief  Disable GPIO module interrupt signal
 *
 * @param  hw Peripheral GPIO hardware instance address.
 * @param  gpio_num GPIO number. If you want to disable the interrupt of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
 */
static inline void gpio_ll_intr_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    hw->pin[gpio_num].int_ena = 0;                             //disable GPIO intr
}

/**
  * @brief Disable input mode on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_input_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_INPUT_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Enable input mode on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_input_enable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_INPUT_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Disable output mode on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_output_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    hw->enable_w1tc.enable_w1tc = (0x1 << gpio_num);
    // Ensure no other output signal is routed via GPIO matrix to this pin
    REG_WRITE(GPIO_FUNC0_OUT_SEL_CFG_REG + (gpio_num * 4),
              SIG_GPIO_OUT_IDX);
}

/**
  * @brief Enable output mode on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_output_enable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    hw->enable_w1ts.enable_w1ts = (0x1 << gpio_num);
}

/**
  * @brief Disable open-drain mode on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_od_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    hw->pin[gpio_num].pad_driver = 0;
}

/**
  * @brief Enable open-drain mode on GPIO.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_od_enable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    hw->pin[gpio_num].pad_driver = 1;
}

/**
 * @brief  GPIO set output level
 *
 * @param  hw Peripheral GPIO hardware instance address.
 * @param  gpio_num GPIO number. If you want to set the output level of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
 * @param  level Output level. 0: low ; 1: high
 */
static inline void gpio_ll_set_level(gpio_dev_t *hw, gpio_num_t gpio_num, uint32_t level)
{
    if (level) {
        hw->out_w1ts.out_w1ts = (1 << gpio_num);
    } else {
        hw->out_w1tc.out_w1tc = (1 << gpio_num);
    }
}

/**
 * @brief  GPIO get input level
 *
 * @warning If the pad is not configured for input (or input and output) the returned value is always 0.
 *
 * @param  hw Peripheral GPIO hardware instance address.
 * @param  gpio_num GPIO number. If you want to get the logic level of e.g. pin GPIO16, gpio_num should be GPIO_NUM_16 (16);
 *
 * @return
 *     - 0 the GPIO input level is 0
 *     - 1 the GPIO input level is 1
 */
static inline int gpio_ll_get_level(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    return (hw->in.data >> gpio_num) & 0x1;
}

/**
 * @brief Enable GPIO wake-up function.
 *
 * @param hw Peripheral GPIO hardware instance address.
 * @param gpio_num GPIO number.
 * @param intr_type GPIO wake-up type. Only GPIO_INTR_LOW_LEVEL or GPIO_INTR_HIGH_LEVEL can be used.
 */
static inline void gpio_ll_wakeup_enable(gpio_dev_t *hw, gpio_num_t gpio_num, gpio_int_type_t intr_type)
{
    hw->pin[gpio_num].int_type = intr_type;
    hw->pin[gpio_num].wakeup_enable = 0x1;
}

/**
 * @brief Disable GPIO wake-up function.
 *
 * @param hw Peripheral GPIO hardware instance address.
 * @param gpio_num GPIO number
 */
static inline void gpio_ll_wakeup_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    hw->pin[gpio_num].wakeup_enable = 0;
}

/**
  * @brief Set GPIO pad drive capability
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number, only support output GPIOs
  * @param strength Drive capability of the pad
  */
static inline void gpio_ll_set_drive_capability(gpio_dev_t *hw, gpio_num_t gpio_num, gpio_drive_cap_t strength)
{
    SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[gpio_num], FUN_DRV_V, strength, FUN_DRV_S);
}

/**
  * @brief Get GPIO pad drive capability
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number, only support output GPIOs
  * @param strength Pointer to accept drive capability of the pad
  */
static inline void gpio_ll_get_drive_capability(gpio_dev_t *hw, gpio_num_t gpio_num, gpio_drive_cap_t *strength)
{
    *strength = (gpio_drive_cap_t)GET_PERI_REG_BITS2(GPIO_PIN_MUX_REG[gpio_num], FUN_DRV_V, FUN_DRV_S);
}

/**
  * @brief Enable all digital gpio pad hold function during Deep-sleep.
  *
  * @param hw Peripheral GPIO hardware instance address.
  */
static inline void gpio_ll_deep_sleep_hold_en(gpio_dev_t *hw)
{
    SET_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_DG_PAD_AUTOHOLD_EN_M);
}

/**
  * @brief Disable all digital gpio pad hold function during Deep-sleep.
  *
  * @param hw Peripheral GPIO hardware instance address.
  */
static inline void gpio_ll_deep_sleep_hold_dis(gpio_dev_t *hw)
{
    SET_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_CLR_DG_PAD_AUTOHOLD);
}

/**
  * @brief Enable gpio pad hold function.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number, only support output GPIOs
  */
static inline void gpio_ll_hold_en(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    if (gpio_num <= GPIO_NUM_5) {
        REG_SET_BIT(RTC_CNTL_PAD_HOLD_REG, BIT(gpio_num));
    } else {
        SET_PERI_REG_MASK(RTC_CNTL_DIG_PAD_HOLD_REG, GPIO_HOLD_MASK[gpio_num]);
    }
}

/**
  * @brief Disable gpio pad hold function.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number, only support output GPIOs
  */
static inline void gpio_ll_hold_dis(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    if (gpio_num <= GPIO_NUM_5) {
        REG_CLR_BIT(RTC_CNTL_PAD_HOLD_REG, BIT(gpio_num));
    } else {
        CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PAD_HOLD_REG, GPIO_HOLD_MASK[gpio_num]);
    }
}

/**
  * @brief Set pad input to a peripheral signal through the IOMUX.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number of the pad.
  * @param signal_idx Peripheral signal id to input. One of the ``*_IN_IDX`` signals in ``soc/gpio_sig_map.h``.
  */
static inline void gpio_ll_iomux_in(gpio_dev_t *hw, uint32_t gpio, uint32_t signal_idx)
{
    hw->func_in_sel_cfg[signal_idx].sig_in_sel = 0;
    PIN_INPUT_ENABLE(GPIO_PIN_MUX_REG[gpio]);
}

/**
 * @brief  Select a function for the pin in the IOMUX
 *
 * @param  pin_name Pin name to configure
 * @param  func Function to assign to the pin
 */
static inline void gpio_ll_iomux_func_sel(uint32_t pin_name, uint32_t func)
{
    if (pin_name == IO_MUX_GPIO18_REG || pin_name == IO_MUX_GPIO19_REG) {
        CLEAR_PERI_REG_MASK(USB_DEVICE_CONF0_REG, USB_DEVICE_USB_PAD_ENABLE);
    }
    PIN_FUNC_SELECT(pin_name, func);
}

/**
  * @brief Set peripheral output to an GPIO pad through the IOMUX.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num gpio_num GPIO number of the pad.
  * @param func The function number of the peripheral pin to output pin.
  *        One of the ``FUNC_X_*`` of specified pin (X) in ``soc/io_mux_reg.h``.
  * @param oen_inv True if the output enable needs to be inverted, otherwise False.
  */
static inline void gpio_ll_iomux_out(gpio_dev_t *hw, uint8_t gpio_num, int func, uint32_t oen_inv)
{
    hw->func_out_sel_cfg[gpio_num].oen_sel = 0;
    hw->func_out_sel_cfg[gpio_num].oen_inv_sel = oen_inv;
    gpio_ll_iomux_func_sel(GPIO_PIN_MUX_REG[gpio_num], func);
}

static inline void gpio_ll_force_hold_all(gpio_dev_t *hw)
{
    CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_DG_PAD_FORCE_UNHOLD);
    SET_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_DG_PAD_FORCE_HOLD);
    SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_PAD_FORCE_HOLD_M);
}

static inline void gpio_ll_force_unhold_all(void)
{
    CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_DG_PAD_FORCE_HOLD);
    CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_PAD_FORCE_HOLD_M);
    SET_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_DG_PAD_FORCE_UNHOLD);
    SET_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_CLR_DG_PAD_AUTOHOLD);
}

/**
  * @brief Enable GPIO pin used for wakeup from sleep.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_sel_en(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_SEL_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Disable GPIO pin used for wakeup from sleep.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_sel_dis(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_SEL_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Disable GPIO pull-up in sleep mode.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_pullup_dis(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_PULLUP_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Enable GPIO pull-up in sleep mode.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_pullup_en(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_PULLUP_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Enable GPIO pull-down in sleep mode.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_pulldown_en(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_PULLDOWN_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Disable GPIO pull-down in sleep mode.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_pulldown_dis(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_PULLDOWN_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Disable GPIO input in sleep mode.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_input_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_INPUT_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Enable GPIO input in sleep mode.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_input_enable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_INPUT_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Disable GPIO output in sleep mode.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_output_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_OUTPUT_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
  * @brief Enable GPIO output in sleep mode.
  *
  * @param hw Peripheral GPIO hardware instance address.
  * @param gpio_num GPIO number
  */
static inline void gpio_ll_sleep_output_enable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    PIN_SLP_OUTPUT_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
}

/**
 * @brief Enable GPIO deep-sleep wake-up function.
 *
 * @param hw Peripheral GPIO hardware instance address.
 * @param gpio_num GPIO number.
 * @param intr_type GPIO wake-up type. Only GPIO_INTR_LOW_LEVEL or GPIO_INTR_HIGH_LEVEL can be used.
 */
static inline void gpio_ll_deepsleep_wakeup_enable(gpio_dev_t *hw, gpio_num_t gpio_num, gpio_int_type_t intr_type)
{
    if (gpio_num > GPIO_NUM_5) {
        abort(); // gpio lager than 5 doesn't support.
    }
    REG_SET_BIT(RTC_CNTL_GPIO_WAKEUP_REG, RTC_CNTL_GPIO_PIN_CLK_GATE);
    REG_SET_BIT(RTC_CNTL_EXT_WAKEUP_CONF_REG, RTC_CNTL_GPIO_WAKEUP_FILTER);
    SET_PERI_REG_MASK(RTC_CNTL_GPIO_WAKEUP_REG, 1 << (RTC_CNTL_GPIO_PIN0_WAKEUP_ENABLE_S - gpio_num));
    uint32_t reg = REG_READ(RTC_CNTL_GPIO_WAKEUP_REG);
    reg &= (~(RTC_CNTL_GPIO_PIN0_INT_TYPE_V << (RTC_CNTL_GPIO_PIN0_INT_TYPE_S - gpio_num * 3)));
    reg |= (intr_type << (RTC_CNTL_GPIO_PIN0_INT_TYPE_S - gpio_num * 3));
    REG_WRITE(RTC_CNTL_GPIO_WAKEUP_REG, reg);
}

/**
 * @brief Disable GPIO deep-sleep wake-up function.
 *
 * @param hw Peripheral GPIO hardware instance address.
 * @param gpio_num GPIO number
 */
static inline void gpio_ll_deepsleep_wakeup_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
{
    if (gpio_num > GPIO_NUM_5) {
        abort(); // gpio lager than 5 doesn't support.
    }
    CLEAR_PERI_REG_MASK(RTC_CNTL_GPIO_WAKEUP_REG, 1 << (RTC_CNTL_GPIO_PIN0_WAKEUP_ENABLE_S - gpio_num));
    CLEAR_PERI_REG_MASK(RTC_CNTL_GPIO_WAKEUP_REG, RTC_CNTL_GPIO_PIN0_INT_TYPE_S - gpio_num * 3);
}

#ifdef __cplusplus
}
#endif