esp-idf/components/esp_hw_support/regi2c_ctrl.c

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

#include "regi2c_ctrl.h"
#include <stdint.h>
#include <freertos/FreeRTOS.h>
#include <freertos/semphr.h>

static portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED;

uint8_t IRAM_ATTR regi2c_ctrl_read_reg(uint8_t block, uint8_t host_id, uint8_t reg_add)
{
    portENTER_CRITICAL_ISR(&mux);
    uint8_t value = i2c_read_reg_raw(block, host_id, reg_add);
    portEXIT_CRITICAL_ISR(&mux);
    return value;
}

uint8_t IRAM_ATTR regi2c_ctrl_read_reg_mask(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb)
{
    portENTER_CRITICAL_ISR(&mux);
    uint8_t value = i2c_read_reg_mask_raw(block, host_id, reg_add, msb, lsb);
    portEXIT_CRITICAL_ISR(&mux);
    return value;
}

void IRAM_ATTR regi2c_ctrl_write_reg(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t data)
{
    portENTER_CRITICAL_ISR(&mux);
    i2c_write_reg_raw(block, host_id, reg_add, data);
    portEXIT_CRITICAL_ISR(&mux);
}

void IRAM_ATTR regi2c_ctrl_write_reg_mask(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb, uint8_t data)
{
    portENTER_CRITICAL_ISR(&mux);
    i2c_write_reg_mask_raw(block, host_id, reg_add, msb, lsb, data);
    portEXIT_CRITICAL_ISR(&mux);
}