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Update touchpad driver

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This commit is contained in:
Riku Isokoski
2021-07-14 17:11:16 +03:00
parent a07b6382ae
commit 5bc40c9287
6 changed files with 63 additions and 36 deletions
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39
src/drivers/Cst816s.cpp
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@@ -40,38 +40,45 @@ void Cst816S::Init() {
*/
static constexpr uint8_t motionMask = 0b00000101;
twiMaster.Write(twiAddress, 0xEC, &motionMask, 1);
// There's mixed information about which register contains which information
if (twiMaster.Read(twiAddress, 0xA7, &chipId, 1) == TwiMaster::ErrorCodes::TransactionFailed) {
chipId = 0xFF;
}
if (twiMaster.Read(twiAddress, 0xA8, &vendorId, 1) == TwiMaster::ErrorCodes::TransactionFailed) {
vendorId = 0xFF;
}
if (twiMaster.Read(twiAddress, 0xA9, &fwVersion, 1) == TwiMaster::ErrorCodes::TransactionFailed) {
fwVersion = 0xFF;
}
}
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;
// This can only be 0 or 1
auto nbTouchPoints = touchData[touchPointNumIndex] & 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*/
auto action = touchData[touchEventIndex] >> 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 +97,4 @@ void Cst816S::Sleep() {
void Cst816S::Wakeup() {
Init();
NRF_LOG_INFO("[TOUCHPANEL] Wakeup");
}
}

36
src/drivers/Cst816s.h
View File

@@ -20,11 +20,9 @@ namespace Pinetime {
uint16_t x = 0;
uint16_t y = 0;
uint8_t action = 0;
uint8_t finger = 0;
uint8_t pressure = 0;
uint8_t area = 0;
bool touching = false;
Gestures gesture = Gestures::None;
bool isTouch = false;
bool isValid = true;
};
Cst816S(TwiMaster& twiMaster, uint8_t twiAddress);
@@ -38,26 +36,40 @@ namespace Pinetime {
void Sleep();
void Wakeup();
uint8_t GetChipId() const {
return chipId;
}
uint8_t GetVendorId() const {
return vendorId;
}
uint8_t GetFwVersion() const {
return fwVersion;
}
private:
static constexpr uint8_t pinIrq = 28;
static constexpr uint8_t pinReset = 10;
static constexpr uint8_t lastTouchId = 0x0f;
// Unused/Unavailable commented out
static constexpr uint8_t gestureIndex = 1;
static constexpr uint8_t touchPointNumIndex = 2;
static constexpr uint8_t touchMiscIndex = 8;
static constexpr uint8_t touchXYIndex = 7;
static constexpr uint8_t touchEventIndex = 3;
static constexpr uint8_t touchXHighIndex = 3;
static constexpr uint8_t touchXLowIndex = 4;
//static constexpr uint8_t touchIdIndex = 5;
static constexpr uint8_t touchYHighIndex = 5;
static constexpr uint8_t touchYLowIndex = 6;
static constexpr uint8_t touchIdIndex = 5;
static constexpr uint8_t touchStep = 6;
static constexpr uint8_t gestureIndex = 1;
//static constexpr uint8_t touchStep = 6;
//static constexpr uint8_t touchXYIndex = 7;
//static constexpr uint8_t touchMiscIndex = 8;
uint8_t touchData[10];
uint8_t touchData[7];
TwiMaster& twiMaster;
uint8_t twiAddress;
uint8_t chipId;
uint8_t vendorId;
uint8_t fwVersion;
};
}
}
}