LCD Touch Screen demo using ST BSP driver.
main.cpp
- Committer:
- bcostm
- Date:
- 2018-04-11
- Revision:
- 1:afd16909a960
- Parent:
- 0:eafcd0445e97
File content as of revision 1:afd16909a960:
#include "mbed.h" #include "stm32l496g_discovery_lcd.h" #include "stm32l496g_discovery_ts.h" int main() { TS_StateTypeDef TS_State; uint16_t x, y; uint8_t text[30]; uint8_t idx; uint8_t cleared = 0; uint8_t prev_nb_touches = 0; BSP_LCD_Init(); BSP_LCD_SetFont(&Font20); BSP_LCD_Clear(LCD_COLOR_BLUE); BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_DisplayStringAt(0, LINE(4), (uint8_t *)"DISCO_L496AG", CENTER_MODE); BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"LCDTS DEMO", CENTER_MODE); wait(1); if (BSP_TS_Init(BSP_LCD_GetXSize(), BSP_LCD_GetYSize()) != TS_OK) { BSP_LCD_Clear(LCD_COLOR_RED); BSP_LCD_SetBackColor(LCD_COLOR_RED); BSP_LCD_SetTextColor(LCD_COLOR_BLACK); BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"TS INIT FAIL", CENTER_MODE); } else { BSP_LCD_Clear(LCD_COLOR_GREEN); BSP_LCD_SetBackColor(LCD_COLOR_GREEN); BSP_LCD_SetTextColor(LCD_COLOR_BLACK); BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"TS INIT OK", CENTER_MODE); } wait(0.5); BSP_LCD_SetFont(&Font16); BSP_LCD_Clear(LCD_COLOR_BLUE); BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); while(1) { BSP_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 <= TS_MAX_NB_TOUCH; idx++) { BSP_LCD_ClearStringLine(idx); } } prev_nb_touches = TS_State.touchDetected; cleared = 0; sprintf((char*)text, "Touches: %d", TS_State.touchDetected); BSP_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); BSP_LCD_DisplayStringAt(0, LINE(idx+1), (uint8_t *)&text, LEFT_MODE); BSP_LCD_DrawHLine(x-10, y, 20); BSP_LCD_DrawVLine(x, y-10, 20); } } else { if (!cleared) { sprintf((char*)text, "Touches: 0"); BSP_LCD_DisplayStringAt(0, LINE(0), (uint8_t *)&text, LEFT_MODE); cleared = 1; } } } }