Function esp_idf_svc::sys::i2c_master_read

pub unsafe extern "C" fn i2c_master_read(
    cmd_handle: *mut c_void,
    data: *mut u8,
    data_len: usize,
    ack: u32,
) -> i32

@brief Queue a “read (multiple) bytes” command to the commands list. Multiple bytes will be read on the I2C bus. This function shall only be called in I2C master mode. Call i2c_master_cmd_begin() to send all queued commands

@param cmd_handle I2C commands list @param data Pointer where the received bytes will the stored. This buffer shall remain valid until the transaction is finished. @param data_len Size, in bytes, of the data buffer @param ack ACK signal

@return - ESP_OK Success - ESP_ERR_INVALID_ARG Parameter error - ESP_ERR_NO_MEM The static buffer used to create cmd_handler is too small - ESP_FAIL No more memory left on the heap