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173e001680
When not compiling bootloader, a spinlock will be used for reading or writing I2C internal devices/registers. When compiling for bootloader, no need to use any lock.
51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "regi2c_ctrl.h"
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#include <stdint.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/semphr.h>
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static portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED;
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uint8_t IRAM_ATTR regi2c_ctrl_read_reg(uint8_t block, uint8_t host_id, uint8_t reg_add)
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{
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portENTER_CRITICAL_ISR(&mux);
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uint8_t value = i2c_read_reg_raw(block, host_id, reg_add);
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portEXIT_CRITICAL_ISR(&mux);
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return value;
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}
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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)
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{
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portENTER_CRITICAL_ISR(&mux);
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uint8_t value = i2c_read_reg_mask_raw(block, host_id, reg_add, msb, lsb);
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portEXIT_CRITICAL_ISR(&mux);
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return value;
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}
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void IRAM_ATTR regi2c_ctrl_write_reg(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t data)
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{
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portENTER_CRITICAL_ISR(&mux);
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i2c_write_reg_raw(block, host_id, reg_add, data);
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portEXIT_CRITICAL_ISR(&mux);
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}
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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)
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{
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portENTER_CRITICAL_ISR(&mux);
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i2c_write_reg_mask_raw(block, host_id, reg_add, msb, lsb, data);
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portEXIT_CRITICAL_ISR(&mux);
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}
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