// Copyright 2015-2016 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. // modified Nov 2017 by Chuck Todd to support Interrupt Driven I/O // modified Nov 2021 by Hristo Gochkov to support ESP-IDF API #ifndef _ESP32_HAL_I2C_H_ #define _ESP32_HAL_I2C_H_ #ifdef __cplusplus extern "C" { #endif #include #include #include esp_err_t i2cInit(uint8_t i2c_num, int8_t sda, int8_t scl, uint32_t clk_speed); esp_err_t i2cDeinit(uint8_t i2c_num); esp_err_t i2cSetClock(uint8_t i2c_num, uint32_t frequency); esp_err_t i2cGetClock(uint8_t i2c_num, uint32_t * frequency); esp_err_t i2cWrite(uint8_t i2c_num, uint16_t address, const uint8_t* buff, size_t size, uint32_t timeOutMillis); esp_err_t i2cRead(uint8_t i2c_num, uint16_t address, uint8_t* buff, size_t size, uint32_t timeOutMillis, size_t *readCount); 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); bool i2cIsInit(uint8_t i2c_num); #ifdef __cplusplus } #endif #endif /* _ESP32_HAL_I2C_H_ */