Daiki Kato
Touch panel sample for GR-PEACH LCD Shield.
Dependencies: GR-PEACH_video LCD_shield_config TouchKey_LCD_shield mbed-rtos mbed
What is this ?
Information on a touch panel is shown to a screen. The touch location of the blue and the 2nd point becomes pink in the 1st touch location in case of a multi-touch.
While touching the screen, a white square in the upper left corner of the screen will be displayed.
Touch information is being output in printf. When doing terminal designation, please set 921600 as a baud rate.
LCD shield can be changed by changing the following macro.
LCD_shield_config.h
/**** User Selection *********/ #define LCD_TYPE (0) // 0: 4.3inch 1:7.1inch /*****************************/
Composition
GR-PEACH, GR-PEACH 4.3 inch LCD Shield or GR-PEACH 7.1 inch LCD Shield.
概要
タッチパネルの情報を画面に表示します。マルチタッチの場合は１点目のタッチ位置は青、２点目のタッチ位置はピンクになります。
画面がタッチされている間、画面左上に白い四角が表示されます。
printfでもタッチ情報を出力しています。ターミナル表示を行う際は、ボーレートに921600を設定してください。
下記のマクロを変更することで、LCD shieldの切り替えができます。
LCD_shield_config.h
/**** User Selection *********/ #define LCD_TYPE (0) // 0: 4.3inch 1:7.1inch /*****************************/
構成
GR-PEACH、GR-PEACH 4.3 inch LCD Shield または GR-PEACH 7.1 inch LCD Shield
Revision 0:a3f0de3891b2, committed 2016-06-29
- Comitter:
- dkato
- Date:
- Wed Jun 29 03:31:37 2016 +0000
- Commit message:
- first commit
Changed in this revision
diff -r 000000000000 -r a3f0de3891b2 GR-PEACH_video.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/GR-PEACH_video.lib Wed Jun 29 03:31:37 2016 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/teams/Renesas/code/GR-PEACH_video/#e0e475089616
diff -r 000000000000 -r a3f0de3891b2 LCD_shield_config.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LCD_shield_config.lib Wed Jun 29 03:31:37 2016 +0000 @@ -0,0 +1,1 @@ +https://developer.mbed.org/users/dkato/code/LCD_shield_config/#b230ec751c56
diff -r 000000000000 -r a3f0de3891b2 TouchKey_LCD_shield.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TouchKey_LCD_shield.lib Wed Jun 29 03:31:37 2016 +0000 @@ -0,0 +1,1 @@ +https://developer.mbed.org/users/dkato/code/TouchKey_LCD_shield/#da3d7ba2674b
diff -r 000000000000 -r a3f0de3891b2 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jun 29 03:31:37 2016 +0000
@@ -0,0 +1,201 @@
+#include "mbed.h"
+#include "DisplayBace.h"
+#include "rtos.h"
+#include "LCD_shield_config.h"
+#if (LCD_TYPE == 0)
+ #include "TouchKey_4_3inch.h"
+ #define TouckKey_LCD_shield TouchKey_4_3inch
+#else
+ #include "TouchKey_7_1inch.h"
+ #define TouckKey_LCD_shield TouchKey_7_1inch
+#endif
+
+/* FRAME BUFFER Parameter */
+#define FRAME_BUFFER_BYTE_PER_PIXEL (2)
+#define FRAME_BUFFER_STRIDE (((LCD_PIXEL_WIDTH * FRAME_BUFFER_BYTE_PER_PIXEL) + 31u) & ~31u)
+
+#define TOUCH_NUM (2)
+#define DROW_POINT (3)
+
+DisplayBase Display;
+DigitalOut lcd_pwon(P7_15);
+DigitalOut lcd_blon(P8_1);
+PwmOut lcd_cntrst(P8_15);
+Serial pc(USBTX, USBRX);
+Semaphore sem_touch_int(0);
+TouckKey_LCD_shield touch(P4_0, P2_13, I2C_SDA, I2C_SCL);
+
+static uint8_t user_frame_buffer[FRAME_BUFFER_STRIDE * LCD_PIXEL_HEIGHT]__attribute((section("NC_BSS"),aligned(32))); /* 32 bytes aligned */
+static volatile int32_t vsync_count = 0;
+
+static void IntCallbackFunc_Vsync(DisplayBase::int_type_t int_type) {
+ /* Interrupt callback function for Vsync interruption */
+ if (vsync_count > 0) {
+ vsync_count--;
+ }
+}
+
+static void Wait_Vsync(const int32_t wait_count) {
+ /* Wait for the specified number of times Vsync occurs */
+ vsync_count = wait_count;
+ while (vsync_count > 0) {
+ /* Do nothing */
+ }
+}
+
+static void Init_LCD_Display(void) {
+ /* Create DisplayBase object */
+ DisplayBase::graphics_error_t error;
+ DisplayBase::lcd_config_t lcd_config;
+ PinName lvds_pin[8] = {
+ /* data pin */
+ P5_7, P5_6, P5_5, P5_4, P5_3, P5_2, P5_1, P5_0
+ };
+
+ lcd_pwon = 0;
+ lcd_blon = 0;
+ Thread::wait(100);
+ lcd_pwon = 1;
+ lcd_blon = 1;
+ Thread::wait(100);
+ lcd_cntrst.write(1.0);
+
+ /* Graphics initialization process */
+ GetLcdConfig(&lcd_config);
+ error = Display.Graphics_init(&lcd_config);
+ if (error != DisplayBase::GRAPHICS_OK) {
+ printf("Line %d, error %d\n", __LINE__, error);
+ while (1);
+ }
+
+ /* Interrupt callback function setting (Vsync signal output from scaler 0) */
+ error = Display.Graphics_Irq_Handler_Set(DisplayBase::INT_TYPE_S0_LO_VSYNC, 0, IntCallbackFunc_Vsync);
+ if (error != DisplayBase::GRAPHICS_OK) {
+ printf("Line %d, error %d\n", __LINE__, error);
+ while (1);
+ }
+
+ Display.Graphics_Lvds_Port_Init(lvds_pin, 8);
+}
+
+static void drow_touch_pos(int id, int x, int y) {
+ int idx_base;
+ int wk_idx;
+ int i;
+ int j;
+ uint8_t coller_pix[2];
+
+ if ((x - (DROW_POINT / 2)) >= 0) {
+ x -= (DROW_POINT / 2);
+ }
+ if (x > (LCD_PIXEL_WIDTH - DROW_POINT)) {
+ x = (LCD_PIXEL_WIDTH - DROW_POINT);
+ }
+ if ((y - (DROW_POINT / 2)) >= 0) {
+ y -= (DROW_POINT / 2);
+ }
+ if (y > (LCD_PIXEL_HEIGHT - DROW_POINT)) {
+ y = (LCD_PIXEL_HEIGHT - DROW_POINT);
+ }
+ idx_base = (x + (LCD_PIXEL_WIDTH * y)) * FRAME_BUFFER_BYTE_PER_PIXEL;
+
+ if (id == 0) {
+ coller_pix[0] = 0xDD;
+ coller_pix[1] = 0x9E;
+ } else {
+ coller_pix[0] = 0x34;
+ coller_pix[1] = 0xDB;
+ }
+
+ for (i = 0; i < DROW_POINT; i++) {
+ wk_idx = idx_base + (LCD_PIXEL_WIDTH * FRAME_BUFFER_BYTE_PER_PIXEL * i);
+ for (j = 0; j < DROW_POINT; j++) {
+ user_frame_buffer[wk_idx++] = coller_pix[0];
+ user_frame_buffer[wk_idx++] = coller_pix[1];
+ }
+ }
+}
+
+static void drow_touch_keyonoff(int id, bool onoff) {
+ int idx_base;
+ int wk_idx;
+ int i;
+ int j;
+ uint8_t coller_pix[2];
+
+ if (id == 0) {
+ idx_base = 0;
+ } else {
+ idx_base = 5 * FRAME_BUFFER_BYTE_PER_PIXEL;
+ }
+
+ if (onoff == false) {
+ coller_pix[0] = 0x00;
+ coller_pix[1] = 0x00;
+ } else {
+ coller_pix[0] = 0xff;
+ coller_pix[1] = 0xff;
+ }
+
+ for (i = 0; i < 5; i++) {
+ wk_idx = idx_base + (LCD_PIXEL_WIDTH * FRAME_BUFFER_BYTE_PER_PIXEL * i);
+ for (j = 0; j < 5; j++) {
+ user_frame_buffer[wk_idx++] = coller_pix[0];
+ user_frame_buffer[wk_idx++] = coller_pix[1];
+ }
+ }
+}
+
+static void touch_int_callback(void) {
+ sem_touch_int.release();
+}
+
+int main(void) {
+ // Change the baud rate of the printf()
+ pc.baud(921600);
+
+ // Initialization of LCD
+ DisplayBase::rect_t rect;
+
+ Init_LCD_Display();
+ memset(user_frame_buffer, 0, sizeof(user_frame_buffer));
+ rect.vs = 0;
+ rect.vw = LCD_PIXEL_HEIGHT;
+ rect.hs = 0;
+ rect.hw = LCD_PIXEL_WIDTH;
+ Display.Graphics_Read_Setting(
+ DisplayBase::GRAPHICS_LAYER_0,
+ (void *)user_frame_buffer,
+ FRAME_BUFFER_STRIDE,
+ DisplayBase::GRAPHICS_FORMAT_RGB565,
+ DisplayBase::WR_RD_WRSWA_32_16BIT,
+ &rect
+ );
+ Wait_Vsync(2);
+ Display.Graphics_Start(DisplayBase::GRAPHICS_LAYER_0);
+
+ // Touch panel processing
+ TouchKey::touch_pos_t touch_pos[TOUCH_NUM];
+ int touch_num = 0;
+ int touch_num_last = 0;
+ int i;
+
+ touch.SetCallback(&touch_int_callback);
+ touch.Reset();
+ while (1) {
+ sem_touch_int.wait();
+ touch_num = touch.GetCoordinates(TOUCH_NUM, touch_pos);
+ if ((touch_num != 0) && (touch_num_last == 0)) {
+ memset(user_frame_buffer, 0, sizeof(user_frame_buffer));
+ }
+ for (i = 0; i < TOUCH_NUM; i ++) {
+ printf("{valid=%d,x=%d,y=%d} ", touch_pos[i].valid, touch_pos[i].x, touch_pos[i].y);
+ drow_touch_keyonoff(i, touch_pos[i].valid);
+ if (touch_pos[i].valid) {
+ drow_touch_pos(i, touch_pos[i].x, touch_pos[i].y);
+ }
+ }
+ printf("\n");
+ touch_num_last = touch_num;
+ }
+}
diff -r 000000000000 -r a3f0de3891b2 mbed-rtos.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Wed Jun 29 03:31:37 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#4c105b8d7cae
diff -r 000000000000 -r a3f0de3891b2 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Jun 29 03:31:37 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/6c34061e7c34 \ No newline at end of file