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trezorhal: return position of last touch event from touch_click

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This commit is contained in:
Pavol Rusnak 2017-10-24 17:59:25 +02:00
parent 34f363f903
commit d2ecae71d7
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GPG Key ID: 91F3B339B9A02A3D
2 changed files with 6 additions and 3 deletions
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7
embed/trezorhal/touch.c
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@ -73,14 +73,17 @@ uint32_t touch_read(void)
return 0; return 0;
} }
void touch_click(void) uint32_t touch_click(void)
{ {
uint32_t r;
// flush touch events if any // flush touch events if any
while (touch_read()) { } while (touch_read()) { }
// wait for TOUCH_START // wait for TOUCH_START
while ((touch_read() & TOUCH_START) == 0) { } while ((touch_read() & TOUCH_START) == 0) { }
// wait for TOUCH_END // wait for TOUCH_END
while ((touch_read() & TOUCH_END) == 0) { } while (((r = touch_read()) & TOUCH_END) == 0) { }
// flush touch events if any // flush touch events if any
while (touch_read()) { } while (touch_read()) { }
// return last touch coordinate
return r;
} }

2
embed/trezorhal/touch.h
View File

@ -17,6 +17,6 @@
void touch_init(void); void touch_init(void);
uint32_t touch_read(void); uint32_t touch_read(void);
void touch_click(void); uint32_t touch_click(void);
#endif #endif