diff options
Diffstat (limited to 'src/drivers/Cst816s.cpp')
-rw-r--r-- | src/drivers/Cst816s.cpp | 38 |
1 files changed, 20 insertions, 18 deletions
diff --git a/src/drivers/Cst816s.cpp b/src/drivers/Cst816s.cpp index fd9792b3..b8f8e45d 100644 --- a/src/drivers/Cst816s.cpp +++ b/src/drivers/Cst816s.cpp @@ -40,38 +40,40 @@ void Cst816S::Init() { */ static constexpr uint8_t motionMask = 0b00000101; twiMaster.Write(twiAddress, 0xEC, &motionMask, 1); + + /* + [7] EnTest - Interrupt pin to test, enable automatic periodic issued after a low pulse. + [6] EnTouch - When a touch is detected, a periodic pulsed Low. + [5] EnChange - Upon detecting a touch state changes, pulsed Low. + [4] EnMotion - When the detected gesture is pulsed Low. + [0] OnceWLP - Press gesture only issue a pulse signal is low. + */ + static constexpr uint8_t irqCtl = 0b01110000; + twiMaster.Write(twiAddress, 0xFA, &irqCtl, 1); } Cst816S::TouchInfos Cst816S::GetTouchInfo() { Cst816S::TouchInfos info; auto ret = twiMaster.Read(twiAddress, 0, touchData, sizeof(touchData)); - if (ret != TwiMaster::ErrorCodes::NoError) - return {}; - - auto nbTouchPoints = touchData[2] & 0x0f; - - uint8_t i = 0; - - uint8_t pointId = (touchData[touchIdIndex + (touchStep * i)]) >> 4; - if (nbTouchPoints == 0 && pointId == lastTouchId) + if (ret != TwiMaster::ErrorCodes::NoError) { + info.isValid = false; return info; + } - info.isTouch = true; + auto nbTouchPoints = touchData[2] & 0x0f; - auto xHigh = touchData[touchXHighIndex + (touchStep * i)] & 0x0f; - auto xLow = touchData[touchXLowIndex + (touchStep * i)]; + auto xHigh = touchData[touchXHighIndex] & 0x0f; + auto xLow = touchData[touchXLowIndex]; uint16_t x = (xHigh << 8) | xLow; - auto yHigh = touchData[touchYHighIndex + (touchStep * i)] & 0x0f; - auto yLow = touchData[touchYLowIndex + (touchStep * i)]; + auto yHigh = touchData[touchYHighIndex] & 0x0f; + auto yLow = touchData[touchYLowIndex]; uint16_t y = (yHigh << 8) | yLow; - auto action = touchData[touchEventIndex + (touchStep * i)] >> 6; /* 0 = Down, 1 = Up, 2 = contact*/ - info.x = x; info.y = y; - info.action = action; + info.touching = (nbTouchPoints > 0); info.gesture = static_cast<Gestures>(touchData[gestureIndex]); return info; @@ -90,4 +92,4 @@ void Cst816S::Sleep() { void Cst816S::Wakeup() { Init(); NRF_LOG_INFO("[TOUCHPANEL] Wakeup"); -}
\ No newline at end of file +} |