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https://github.com/espressif/arduino-esp32
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f87107dedb
* Implement Thread-Safe I2C based on ESP-IDF API * Update esp32-hal.h * use proper types for size and timeout * Allow disabling of the HAL locks * Limit frequency settings to prevent Interrupt WDT
42 lines
1.6 KiB
C
42 lines
1.6 KiB
C
// Copyright 2015-2016 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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// 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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// modified Nov 2017 by Chuck Todd <StickBreaker> to support Interrupt Driven I/O
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// modified Nov 2021 by Hristo Gochkov <Me-No-Dev> to support ESP-IDF API
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#ifndef _ESP32_HAL_I2C_H_
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#define _ESP32_HAL_I2C_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdbool.h>
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#include <esp_err.h>
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esp_err_t i2cInit(uint8_t i2c_num, int8_t sda, int8_t scl, uint32_t clk_speed);
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esp_err_t i2cDeinit(uint8_t i2c_num);
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esp_err_t i2cSetClock(uint8_t i2c_num, uint32_t frequency);
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esp_err_t i2cGetClock(uint8_t i2c_num, uint32_t * frequency);
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esp_err_t i2cWrite(uint8_t i2c_num, uint16_t address, const uint8_t* buff, size_t size, uint32_t timeOutMillis);
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esp_err_t i2cRead(uint8_t i2c_num, uint16_t address, uint8_t* buff, size_t size, uint32_t timeOutMillis, size_t *readCount);
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esp_err_t i2cWriteReadNonStop(uint8_t i2c_num, uint16_t address, const uint8_t* wbuff, size_t wsize, uint8_t* rbuff, size_t rsize, uint32_t timeOutMillis, size_t *readCount);
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bool i2cIsInit(uint8_t i2c_num);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ESP32_HAL_I2C_H_ */
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