Basic demo showing how to use the touch screen present on the DISCO_F469NI board.
Dependencies: BSP_DISCO_F469NI LCD_DISCO_F469NI TS_DISCO_F469NI mbed
Diff: main.cpp
- Revision:
- 0:0e730157c767
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Fri Dec 18 09:06:55 2015 +0000 @@ -0,0 +1,84 @@ +#include "mbed.h" +#include "TS_DISCO_F469NI.h" +#include "LCD_DISCO_F469NI.h" + +LCD_DISCO_F469NI lcd; +TS_DISCO_F469NI ts; + +int main() +{ + TS_StateTypeDef TS_State; + uint16_t x, y; + uint8_t text[30]; + uint8_t status; + uint8_t idx; + uint8_t cleared = 0; + uint8_t prev_nb_touches = 0; + + BSP_LCD_SetFont(&Font24); + + lcd.DisplayStringAt(0, LINE(5), (uint8_t *)"TOUCHSCREEN DEMO", CENTER_MODE); + wait(1); + + status = ts.Init(lcd.GetXSize(), lcd.GetYSize()); + if (status != TS_OK) + { + lcd.Clear(LCD_COLOR_RED); + lcd.SetBackColor(LCD_COLOR_RED); + lcd.SetTextColor(LCD_COLOR_WHITE); + lcd.DisplayStringAt(0, LINE(5), (uint8_t *)"TOUCHSCREEN INIT FAIL", CENTER_MODE); + } + else + { + lcd.Clear(LCD_COLOR_GREEN); + lcd.SetBackColor(LCD_COLOR_GREEN); + lcd.SetTextColor(LCD_COLOR_WHITE); + lcd.DisplayStringAt(0, LINE(5), (uint8_t *)"TOUCHSCREEN INIT OK", CENTER_MODE); + } + + wait(1); + lcd.SetBackColor(LCD_COLOR_BLUE); + lcd.SetTextColor(LCD_COLOR_WHITE); + + while(1) + { + + ts.GetState(&TS_State); + if (TS_State.touchDetected) + { + // Clear lines corresponding to old touches coordinates + if (TS_State.touchDetected < prev_nb_touches) + { + for (idx = (TS_State.touchDetected + 1); idx <= 5; idx++) + { + lcd.ClearStringLine(idx); + } + } + prev_nb_touches = TS_State.touchDetected; + + cleared = 0; + + sprintf((char*)text, "Touches: %d", TS_State.touchDetected); + lcd.DisplayStringAt(0, LINE(0), (uint8_t *)&text, LEFT_MODE); + + for (idx = 0; idx < TS_State.touchDetected; idx++) + { + x = TS_State.touchX[idx]; + y = TS_State.touchY[idx]; + sprintf((char*)text, "Touch %d: x=%d y=%d ", idx+1, x, y); + lcd.DisplayStringAt(0, LINE(idx+1), (uint8_t *)&text, LEFT_MODE); + lcd.FillCircle(TS_State.touchX[idx], TS_State.touchY[idx], 20); + } + } + else + { + if (!cleared) + { + lcd.Clear(LCD_COLOR_BLUE); + sprintf((char*)text, "Touches: 0"); + lcd.DisplayStringAt(0, LINE(0), (uint8_t *)&text, LEFT_MODE); + cleared = 1; + } + } + } +}