Touch panel library for GR-PEACH LCD Shield.
Dependents: GR-PEACH_LCD_shield_touch_sample LCD_shield_config
TouchKey_RSK_TFT.cpp
- Committer:
- dkato
- Date:
- 2016-09-27
- Revision:
- 1:538027089976
File content as of revision 1:538027089976:
/* mbed Microcontroller Library * Copyright (C) 2016 Renesas Electronics Corporation. All rights reserved. * * 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. */ #include "TouchKey_RSK_TFT.h" TouchKey_RSK_TFT::TouchKey_RSK_TFT(PinName tprst, PinName tpint, PinName sda, PinName scl) : TouchKey(tprst, tpint), i2c(sda, scl) { } int TouchKey_RSK_TFT::GetMaxTouchNum(void) { return 5; } int TouchKey_RSK_TFT::GetCoordinates(int touch_buff_num, touch_pos_t * p_touch) { char buf[32]; uint32_t wk_x; uint32_t wk_y; touch_pos_t * wk_touch; int count = 0; int i; int read_size; if (touch_buff_num > GetMaxTouchNum()) { touch_buff_num = GetMaxTouchNum(); } read_size = 2 + 6 * touch_buff_num; if (p_touch != NULL) { for (i = 0; i < touch_buff_num; i++) { wk_touch = &p_touch[i]; wk_touch->x = 0; wk_touch->y = 0; wk_touch->valid = false; } if (i2c.read((0x38 << 1), buf, read_size) == 0) { for (i = 0; i < touch_buff_num; i++) { if (buf[2] > i) { wk_touch = &p_touch[i]; wk_x = (((uint32_t)buf[3 + (6 * i)] & 0x0F) << 8) | buf[4 + (6 * i)]; if (wk_x < 800) { wk_touch->x = 800 - wk_x; } else { wk_touch->x = 0; } wk_y = (((uint32_t)buf[5 + (6 * i)] & 0x0F) << 8) | buf[6 + (6 * i)]; if (wk_y < 480) { wk_touch->y = 480 - wk_y; } else { wk_touch->y = 0; } wk_touch->valid = 1; count++; } } } } return count; }