kopia lustrzana https://github.com/espressif/esp-idf
120 wiersze
4.1 KiB
C
120 wiersze
4.1 KiB
C
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// The HAL layer for GPIO (common part)
|
|
//
|
|
#include "esp_attr.h"
|
|
#include "soc/soc.h"
|
|
#include "hal/gpio_hal.h"
|
|
#include "soc/soc_caps.h"
|
|
|
|
#if CONFIG_GPIO_ESP32_SUPPORT_SWITCH_SLP_PULL
|
|
typedef struct gpio_slp_mode_cfg {
|
|
volatile uint16_t fun_pu[((SOC_GPIO_PIN_COUNT-1) >> 4) + 1];
|
|
volatile uint16_t fun_pd[((SOC_GPIO_PIN_COUNT-1) >> 4) + 1];
|
|
} gpio_slp_mode_cfg_t;
|
|
|
|
static void gpio_hal_sleep_mode_setup_wrapper(
|
|
gpio_hal_context_t *hal,
|
|
gpio_num_t gpio_num,
|
|
void (*opt)(gpio_hal_context_t *, gpio_num_t, void *)
|
|
)
|
|
{
|
|
static DRAM_ATTR gpio_slp_mode_cfg_t gpio_cfg;
|
|
if (opt) {
|
|
(*opt)(hal, gpio_num, (void *)&gpio_cfg);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief GPIO pu/pd information backup function
|
|
* @param hal gpio hal
|
|
* @param gpio_num gpio num
|
|
* @param args pointer for bitmap to backup GPIO pu/pd information
|
|
*/
|
|
static void gpio_hal_fun_pupd_backup(gpio_hal_context_t *hal, gpio_num_t gpio_num, void *args)
|
|
{
|
|
/* On ESP32, setting SLP_PU, SLP_PD couldn`t change GPIO status
|
|
* from FUN_PU, FUN_PD to SLP_PU, SLP_PD at sleep.
|
|
* On the ESP32S2, it does.
|
|
* The following code emulates ESP32S2`s behavior:
|
|
*/
|
|
gpio_slp_mode_cfg_t *pcfg = (gpio_slp_mode_cfg_t *)args;
|
|
|
|
if (gpio_ll_sleep_sel_is_enabled(hal->dev, gpio_num)) {
|
|
/* Record fun_pu and fun_pd state in bitmap */
|
|
if (gpio_ll_pullup_is_enabled(hal->dev, gpio_num)) {
|
|
pcfg->fun_pu[gpio_num >> 4] |= BIT(gpio_num & 0xf);
|
|
} else {
|
|
pcfg->fun_pu[gpio_num >> 4] &= ~BIT(gpio_num & 0xf);
|
|
}
|
|
if (gpio_ll_pulldown_is_enabled(hal->dev, gpio_num)) {
|
|
pcfg->fun_pd[gpio_num >> 4] |= BIT(gpio_num & 0xf);
|
|
} else {
|
|
pcfg->fun_pd[gpio_num >> 4] &= ~BIT(gpio_num & 0xf);
|
|
}
|
|
|
|
if (gpio_ll_sleep_pullup_is_enabled(hal->dev, gpio_num)) {
|
|
gpio_ll_pullup_en(hal->dev, gpio_num);
|
|
} else {
|
|
gpio_ll_pullup_dis(hal->dev, gpio_num);
|
|
}
|
|
if (gpio_ll_sleep_pulldown_is_enabled(hal->dev, gpio_num)) {
|
|
gpio_ll_pulldown_en(hal->dev, gpio_num);
|
|
} else {
|
|
gpio_ll_pulldown_dis(hal->dev, gpio_num);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief GPIO pu/pd information backup function
|
|
* @param hal gpio hal
|
|
* @param gpio_num gpio num
|
|
* @param args pointer for bitmap to restore GPIO pu/pd information
|
|
*/
|
|
static void gpio_hal_fun_pupd_restore(gpio_hal_context_t *hal, gpio_num_t gpio_num, void *args)
|
|
{
|
|
/* On ESP32, setting SLP_PU, SLP_PD couldn`t change GPIO status
|
|
* from SLP_PU, SLP_PD to FUN_PU, FUN_PD when it wakes up.
|
|
* On the ESP32S2, it does.
|
|
* The following code emulates ESP32S2`s behavior:
|
|
*/
|
|
gpio_slp_mode_cfg_t *pcfg = (gpio_slp_mode_cfg_t *)args;
|
|
|
|
if (gpio_ll_sleep_sel_is_enabled(hal->dev, gpio_num)) {
|
|
if (pcfg->fun_pu[gpio_num >> 4] & BIT(gpio_num & 0xf)) {
|
|
gpio_ll_pullup_en(hal->dev, gpio_num);
|
|
} else {
|
|
gpio_ll_pullup_dis(hal->dev, gpio_num);
|
|
}
|
|
if (pcfg->fun_pd[gpio_num >> 4] & BIT(gpio_num & 0xf)) {
|
|
gpio_ll_pulldown_en(hal->dev, gpio_num);
|
|
} else {
|
|
gpio_ll_pulldown_dis(hal->dev, gpio_num);
|
|
}
|
|
}
|
|
}
|
|
|
|
void gpio_hal_sleep_pupd_config_apply(gpio_hal_context_t *hal, gpio_num_t gpio_num)
|
|
{
|
|
gpio_hal_sleep_mode_setup_wrapper(hal, gpio_num, gpio_hal_fun_pupd_backup);
|
|
}
|
|
|
|
void gpio_hal_sleep_pupd_config_unapply(gpio_hal_context_t *hal, gpio_num_t gpio_num)
|
|
{
|
|
gpio_hal_sleep_mode_setup_wrapper(hal, gpio_num, gpio_hal_fun_pupd_restore);
|
|
}
|
|
#endif
|