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Updated for M5Stack core2

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This commit is contained in:
fvanroie 2021-01-06 14:36:29 +01:00
parent 335725e6f2
commit dd0d1d7b17
1 changed files with 68 additions and 9 deletions
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77
src/drv/hasp_drv_ft6336u.cpp
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@ -8,12 +8,14 @@
#define RST_PIN (TOUCH_RST) // -1 if pin is connected to VCC else set pin number #define RST_PIN (TOUCH_RST) // -1 if pin is connected to VCC else set pin number
static FT6336U ft6336u(TOUCH_SDA, TOUCH_SCL, TOUCH_RST, TOUCH_IRQ); FT6336U * touchpanel;
// Read touch points // Read touch points
bool IRAM_ATTR FT6336U_getXY(int16_t * touchX, int16_t * touchY, bool debug) bool IRAM_ATTR FT6336U_getXY(int16_t * touchX, int16_t * touchY, bool debug)
{ {
FT6336U_TouchPointType tp = ft6336u.scan(); FT6336U_TouchPointType tp = touchpanel->scan();
if(tp.touch_count != 1) return false;
if(debug) { if(debug) {
char tempString[128]; char tempString[128];
@ -22,18 +24,75 @@ bool IRAM_ATTR FT6336U_getXY(int16_t * touchX, int16_t * touchY, bool debug)
Serial.print(tempString); Serial.print(tempString);
} }
if(tp.touch_count != 1) return false; int i = 0; // tp.tp[0].status == TouchStatusEnum::touch ? 0 : 1;
int i = tp.tp[0].status == TouchStatusEnum::touch ? 0 : 1; *touchX = TFT_WIDTH - tp.tp[i].y;
*touchY = tp.tp[i].x;
*touchX = tp.tp[i].x;
*touchY = tp.tp[i].y;
return true; return true;
} }
void scan(TwoWire & i2c)
{
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for(address = 1; address < 127; address++) {
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
i2c.beginTransmission(address);
error = i2c.endTransmission();
if(error == 0) {
Serial.print("I2C device found at address 0x");
if(address < 16) Serial.print("0");
Serial.print(address, HEX);
Serial.println(" !");
nDevices++;
} else if(error == 4) {
Serial.print("Unknown error at address 0x");
if(address < 16) Serial.print("0");
Serial.println(address, HEX);
}
}
if(nDevices == 0)
Serial.println("No I2C devices found\n");
else
Serial.println("done\n");
}
void FT6336U_init() void FT6336U_init()
{ {
ft6336u.begin(); Log.trace(TAG_DRVR, F("Touch SDA : %d"), TOUCH_SDA);
Log.trace(TAG_DRVR, F("FT6336U touch driver started")); Log.trace(TAG_DRVR, F("Touch SCL : %d"), TOUCH_SCL);
Log.trace(TAG_DRVR, F("Touch freq. : %d"), TOUCH_FREQUENCY);
Log.trace(TAG_DRVR, F("Touch address : %x"), I2C_ADDR_FT6336U);
touchpanel = new FT6336U(TOUCH_SDA, TOUCH_SCL, TOUCH_RST, TOUCH_IRQ);
touchpanel->begin();
// From: M5Core2/src/M5Touch.cpp
// By default, the FT6336 will pulse the INT line for every touch
// event. But because it shares the Wire1 TwoWire/I2C with other
// devices, we cannot easily create an interrupt service routine to
// handle these events. So instead, we set the INT wire to polled mode,
// so it simply goes low as long as there is at least one valid touch.
// touchpanel->writeByte(0xA4, 0x00);
Wire1.beginTransmission(I2C_ADDR_FT6336U);
Wire1.write(0xA4); // address
Wire1.write(0x00); // data
Wire1.endTransmission();
scan(Wire1);
if(touchpanel->read_chip_id() != 0) {
Log.trace(TAG_DRVR, F("FT6336U touch driver started chipid: %d"), touchpanel->read_chip_id());
} else {
Log.error(TAG_DRVR, F("FT6336U touch driver failed to start"));
}
} }
#endif #endif