kopia lustrzana https://github.com/espressif/esp-idf
51 wiersze
1.6 KiB
C
51 wiersze
1.6 KiB
C
// Copyright 2015-2020 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.
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "hal/clk_gate_ll.h"
|
|
#include "driver/periph_ctrl.h"
|
|
|
|
static portMUX_TYPE periph_spinlock = portMUX_INITIALIZER_UNLOCKED;
|
|
|
|
static uint8_t ref_counts[PERIPH_MODULE_MAX] = {0};
|
|
|
|
void periph_module_enable(periph_module_t periph)
|
|
{
|
|
assert(periph < PERIPH_MODULE_MAX);
|
|
portENTER_CRITICAL_SAFE(&periph_spinlock);
|
|
if (ref_counts[periph] == 0) {
|
|
periph_ll_enable_clk_clear_rst(periph);
|
|
}
|
|
ref_counts[periph]++;
|
|
portEXIT_CRITICAL_SAFE(&periph_spinlock);
|
|
}
|
|
|
|
void periph_module_disable(periph_module_t periph)
|
|
{
|
|
assert(periph < PERIPH_MODULE_MAX);
|
|
portENTER_CRITICAL_SAFE(&periph_spinlock);
|
|
ref_counts[periph]--;
|
|
if (ref_counts[periph] == 0) {
|
|
periph_ll_disable_clk_set_rst(periph);
|
|
}
|
|
portEXIT_CRITICAL_SAFE(&periph_spinlock);
|
|
}
|
|
|
|
void periph_module_reset(periph_module_t periph)
|
|
{
|
|
assert(periph < PERIPH_MODULE_MAX);
|
|
portENTER_CRITICAL_SAFE(&periph_spinlock);
|
|
periph_ll_reset(periph);
|
|
portEXIT_CRITICAL_SAFE(&periph_spinlock);
|
|
}
|