Touch panel library for GR-PEACH LCD Shield.
Dependents: GR-PEACH_LCD_shield_touch_sample LCD_shield_config
Diff: TouchKey_4_3inch.cpp
- Revision:
- 0:da3d7ba2674b
diff -r 000000000000 -r da3d7ba2674b TouchKey_4_3inch.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TouchKey_4_3inch.cpp Wed Jun 29 03:28:06 2016 +0000 @@ -0,0 +1,70 @@ +/* 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_4_3inch.h" + +TouchKey_4_3inch::TouchKey_4_3inch(PinName tprst, PinName tpint, PinName sda, PinName scl) : + TouchKey(tprst, tpint), i2c(sda, scl) { +} + +int TouchKey_4_3inch::GetMaxTouchNum(void) { + return 2; +} + +int TouchKey_4_3inch::GetCoordinates(int touch_buff_num, touch_pos_t * p_touch) { + char buf[8]; + stx_report_data_t *pdata; + touch_pos_t * wk_touch; + int count = 0; + int i; + int read_size; + + if (touch_buff_num > GetMaxTouchNum()) { + touch_buff_num = GetMaxTouchNum(); + } + if (touch_buff_num < 2) { + read_size = 5; + } else { + read_size = 8; + } + + 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((0x55 << 1), buf, read_size) == 0) { + pdata = (stx_report_data_t *)buf; + if (pdata->fingers) { + for (i = 0; i < touch_buff_num; i++) { + if (pdata->xyz_data[i].valid) { + wk_touch = &p_touch[i]; + wk_touch->x = (pdata->xyz_data[i].x_h << 8) | pdata->xyz_data[i].x_l; + wk_touch->y = (pdata->xyz_data[i].y_h << 8) | pdata->xyz_data[i].y_l; + wk_touch->valid = true; + count++; + } + } + } + } + } + + return count; +} + +