1 /* 2 * Copyright (c) 2021 Bestechnic (Shanghai) Co., Ltd. All rights reserved. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 #ifndef TOUCH_IF_H 16 #define TOUCH_IF_H 17 18 #include "platform_if.h" 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif /* __cplusplus */ 23 24 /* event */ 25 #define TOUCH_EVENT_UP (0x01) 26 #define TOUCH_EVENT_DOWN (0x02) 27 #define TOUCH_EVENT_MOVE (0x03) 28 #define TOUCH_EVENT_EXIST (0x04) 29 #define TOUCH_EVENT_NONE (0x80) 30 31 #define TOUCH_DEV_MAX 1 32 #define TOUCH_MSG_MAX 8 33 34 struct touch_msg { 35 uint16_t x; 36 uint16_t y; 37 uint8_t event; 38 }; 39 40 DevHandle TouchOpen(int id); 41 42 void TouchClose(DevHandle handle); 43 44 int TouchRead(DevHandle handle, struct touch_msg *msg, uint32_t timeout); 45 46 #ifdef __cplusplus 47 } 48 #endif /* __cplusplus */ 49 50 #endif 51