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Basic calculator example to show the LPC4088 Experiment Base Board with a touch LCD from DisplayModule
Dependencies: DmTftLibrary mbed
Fork of dm_calc by
Diff: main.cpp
- Revision:
- 5:d2802a0c5af2
- Parent:
- 4:71588a1e3618
diff -r 71588a1e3618 -r d2802a0c5af2 main.cpp --- a/main.cpp Wed Sep 10 12:48:14 2014 +0000 +++ b/main.cpp Thu Sep 11 14:28:56 2014 +0000 @@ -43,6 +43,8 @@ #define NUM_BUTTONS (sizeof(captions)/sizeof(captions[0])) +#define NUM_CHARS_IN_DISPLAY 20 + #if 0 /* Displays without adapter (DM_TFT28_105 & DM_TFT35_107) */ #define DM_PIN_CS_TOUCH D4 @@ -111,7 +113,7 @@ Button* buttons[NUM_BUTTONS]; -static char buff[25] = {0}; +static char buff[NUM_CHARS_IN_DISPLAY + 1] = {0}; static bool redrawResult = true; static bool clearResult = true; @@ -132,6 +134,13 @@ static calc_mode_t mode = MODE_WANT_ARG1; static int strpos = 0; + if (strpos == NUM_CHARS_IN_DISPLAY) { + // only accept 'clr' and '=' to prevent overflow + if ((arg != 'c') && (arg != '=')) { + return; + } + } + switch (arg) { case '0': @@ -256,18 +265,6 @@ while(true) { touch.readTouchData(x, y, down); - /* The following printouts are for some unexplainable reason needed - on the LPC4088 QuickStart Board in combination with the MBED online compiler. - The printouts are not needed when using an external compiler, e.g. Keil uVision - or LPCXpresso IDE. */ -#if defined(__LPC407x_8x_177x_8x_H__) - if (down) { - printf("DOWN %4d, %4d\n", x, y); - } else { - printf("UP %4d, %4d\n", x, y); - } -#endif - for (int i = 0; i < NUM_BUTTONS; i++) { if (buttons[i]->handle(x, y, down)) { buttons[i]->draw(&tft);