添加触摸方向切换功能
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@ -19,7 +19,10 @@ inline void TFT_eSPI::begin_touch_read_write(void){
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DMA_BUSY_CHECK;
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CS_H; // Just in case it has been left low
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#if defined(SPI_HAS_TRANSACTION) && defined(SUPPORT_TRANSACTIONS)
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if (locked) {locked = false; spi.beginTransaction(SPISettings(SPI_TOUCH_FREQUENCY, MSBFIRST, SPI_MODE0));}
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if (locked) {
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locked = false;
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spi.beginTransaction(SPISettings(SPI_TOUCH_FREQUENCY, MSBFIRST, SPI_MODE0));
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}
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#else
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spi.setFrequency(SPI_TOUCH_FREQUENCY);
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#endif
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@ -34,7 +37,12 @@ inline void TFT_eSPI::begin_touch_read_write(void){
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inline void TFT_eSPI::end_touch_read_write(void) {
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T_CS_H;
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#if defined(SPI_HAS_TRANSACTION) && defined(SUPPORT_TRANSACTIONS)
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if(!inTransaction) {if (!locked) {locked = true; spi.endTransaction();}}
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if (!inTransaction) {
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if (!locked) {
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locked = true;
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spi.endTransaction();
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}
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}
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#else
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spi.setFrequency(SPI_FREQUENCY);
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#endif
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@ -45,15 +53,21 @@ inline void TFT_eSPI::end_touch_read_write(void){
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** Function name: Legacy - deprecated
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** Description: Start/end transaction
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***************************************************************************************/
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void TFT_eSPI::spi_begin_touch() {begin_touch_read_write();}
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void TFT_eSPI::spi_end_touch() { end_touch_read_write();}
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void TFT_eSPI::spi_begin_touch() {
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begin_touch_read_write();
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}
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void TFT_eSPI::spi_end_touch() {
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end_touch_read_write();
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}
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void TFT_eSPI::set_touch_rotation(uint8_t rotation) {
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_rotation = rotation;
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}
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/***************************************************************************************
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** Function name: getTouchRaw
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** Description: read raw touch position. Always returns true.
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***************************************************************************************/
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uint8_t TFT_eSPI::getTouchRaw(uint16_t* x, uint16_t* y) {
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uint16_t tmp;
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uint16_t tmp1, tmp2;
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begin_touch_read_write();
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@ -66,11 +80,11 @@ uint8_t TFT_eSPI::getTouchRaw(uint16_t *x, uint16_t *y){
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spi.transfer(0); // Read first 8 bits
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spi.transfer(0xd0); // Read last 8 bits and start new YP conversion
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tmp = spi.transfer(0); // Read first 8 bits
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tmp = tmp <<5;
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tmp |= 0x1f & (spi.transfer(0x90)>>3); // Read last 8 bits and start new XP conversion
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tmp1 = spi.transfer(0); // Read first 8 bits
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tmp1 = tmp1 << 5;
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tmp1 |= 0x1f & (spi.transfer(0x90) >> 3); // Read last 8 bits and start new XP conversion
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*x = tmp;
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//*x = tmp;
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// Start XP sample request for y position, read 4 times and keep last sample
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spi.transfer(0); // Read first 8 bits
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@ -80,14 +94,30 @@ uint8_t TFT_eSPI::getTouchRaw(uint16_t *x, uint16_t *y){
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spi.transfer(0); // Read first 8 bits
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spi.transfer(0x90); // Read last 8 bits and start new XP conversion
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tmp = spi.transfer(0); // Read first 8 bits
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tmp = tmp <<5;
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tmp |= 0x1f & (spi.transfer(0)>>3); // Read last 8 bits
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tmp2 = spi.transfer(0); // Read first 8 bits
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tmp2 = tmp2 << 5;
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tmp2 |= 0x1f & (spi.transfer(0) >> 3); // Read last 8 bits
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*y = tmp;
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//*y = tmp;
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switch (_rotation) {
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case 0:
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*x = 4095 - tmp2;
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*y = tmp1;
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break;
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case 1:
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*x = tmp1;
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*y = tmp2;
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break;
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case 2:
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*x = tmp2;
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*y = 4095 - tmp1;
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break;
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default: // 3
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*x = 4095 - tmp1;
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*y = 4095 - tmp2;
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}
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end_touch_read_write();
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return true;
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}
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@ -96,7 +126,6 @@ uint8_t TFT_eSPI::getTouchRaw(uint16_t *x, uint16_t *y){
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** Description: read raw pressure on touchpad and return Z value.
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***************************************************************************************/
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uint16_t TFT_eSPI::getTouchRawZ(void) {
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begin_touch_read_write();
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// Z sample request
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@ -121,8 +150,7 @@ uint8_t TFT_eSPI::validTouch(uint16_t *x, uint16_t *y, uint16_t threshold){
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// Wait until pressure stops increasing to debounce pressure
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uint16_t z1 = 1;
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uint16_t z2 = 0;
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while (z1 > z2)
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{
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while (z1 > z2) {
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z2 = z1;
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z1 = getTouchRawZ();
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delay(1);
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@ -130,7 +158,8 @@ uint8_t TFT_eSPI::validTouch(uint16_t *x, uint16_t *y, uint16_t threshold){
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// Serial.print("Z = ");Serial.println(z1);
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if (z1 <= threshold) return false;
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if (z1 <= threshold)
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return false;
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getTouchRaw(&x_tmp, &y_tmp);
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@ -138,7 +167,8 @@ uint8_t TFT_eSPI::validTouch(uint16_t *x, uint16_t *y, uint16_t threshold){
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// Serial.print(", Z = ");Serial.println(z1);
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delay(1); // Small delay to the next sample
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if (getTouchRawZ() <= threshold) return false;
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if (getTouchRawZ() <= threshold)
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return false;
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delay(2); // Small delay to the next sample
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getTouchRaw(&x_tmp2, &y_tmp2);
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@ -146,8 +176,10 @@ uint8_t TFT_eSPI::validTouch(uint16_t *x, uint16_t *y, uint16_t threshold){
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// Serial.print("Sample 2 x,y = "); Serial.print(x_tmp2);Serial.print(",");Serial.println(y_tmp2);
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// Serial.print("Sample difference = ");Serial.print(abs(x_tmp - x_tmp2));Serial.print(",");Serial.println(abs(y_tmp - y_tmp2));
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if (abs(x_tmp - x_tmp2) > _RAWERR) return false;
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if (abs(y_tmp - y_tmp2) > _RAWERR) return false;
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if (abs(x_tmp - x_tmp2) > _RAWERR)
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return false;
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if (abs(y_tmp - y_tmp2) > _RAWERR)
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return false;
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*x = x_tmp;
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*y = y_tmp;
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@ -163,23 +195,30 @@ uint8_t TFT_eSPI::validTouch(uint16_t *x, uint16_t *y, uint16_t threshold){
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uint8_t TFT_eSPI::getTouch(uint16_t* x, uint16_t* y, uint16_t threshold) {
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uint16_t x_tmp, y_tmp;
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if (threshold<20) threshold = 20;
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if (_pressTime > millis()) threshold=20;
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if (threshold < 20)
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threshold = 20;
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if (_pressTime > millis())
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threshold = 20;
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uint8_t n = 5;
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uint8_t valid = 0;
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while (n--)
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{
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if (validTouch(&x_tmp, &y_tmp, threshold)) valid++;;
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while (n--) {
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if (validTouch(&x_tmp, &y_tmp, threshold))
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valid++;
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;
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}
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if (valid<1) { _pressTime = 0; return false; }
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if (valid < 1) {
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_pressTime = 0;
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return false;
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}
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_pressTime = millis() + 50;
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convertRawXY(&x_tmp, &y_tmp);
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if (x_tmp >= _width || y_tmp >= _height) return false;
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if (x_tmp >= _width || y_tmp >= _height)
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return false;
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_pressX = x_tmp;
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_pressY = y_tmp;
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@ -192,8 +231,7 @@ uint8_t TFT_eSPI::getTouch(uint16_t *x, uint16_t *y, uint16_t threshold){
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** Function name: convertRawXY
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** Description: convert raw touch x,y values to screen coordinates
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***************************************************************************************/
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void TFT_eSPI::convertRawXY(uint16_t *x, uint16_t *y)
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{
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void TFT_eSPI::convertRawXY(uint16_t* x, uint16_t* y) {
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uint16_t x_tmp = *x, y_tmp = *y, xx, yy;
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if (!touchCalibration_rotate) {
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@ -223,15 +261,14 @@ void TFT_eSPI::calibrateTouch(uint16_t *parameters, uint32_t color_fg, uint32_t
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int16_t values[] = {0, 0, 0, 0, 0, 0, 0, 0};
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uint16_t x_tmp, y_tmp;
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for (uint8_t i = 0; i < 4; i++) {
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fillRect(0, 0, size + 1, size + 1, color_bg);
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fillRect(0, _height - size - 1, size + 1, size + 1, color_bg);
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fillRect(_width - size - 1, 0, size + 1, size + 1, color_bg);
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fillRect(_width - size - 1, _height - size - 1, size + 1, size + 1, color_bg);
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if (i == 5) break; // used to clear the arrows
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if (i == 5)
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break; // used to clear the arrows
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switch (i) {
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case 0: // up left
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@ -257,11 +294,13 @@ void TFT_eSPI::calibrateTouch(uint16_t *parameters, uint32_t color_fg, uint32_t
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}
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// user has to get the chance to release
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if(i>0) delay(1000);
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if (i > 0)
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delay(1000);
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for (uint8_t j = 0; j < 8; j++) {
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// Use a lower detect threshold as corners tend to be less sensitive
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while(!validTouch(&x_tmp, &y_tmp, Z_THRESHOLD/2));
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while (!validTouch(&x_tmp, &y_tmp, Z_THRESHOLD / 2))
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;
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values[i * 2] += x_tmp;
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values[i * 2 + 1] += y_tmp;
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}
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@ -269,7 +308,6 @@ void TFT_eSPI::calibrateTouch(uint16_t *parameters, uint32_t color_fg, uint32_t
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values[i * 2 + 1] /= 8;
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}
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// from case 0 to case 1, the y value changed.
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// If the measured delta of the touch x axis is bigger than the delta of the y axis, the touch and TFT axes are switched.
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touchCalibration_rotate = false;
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@ -306,10 +344,14 @@ void TFT_eSPI::calibrateTouch(uint16_t *parameters, uint32_t color_fg, uint32_t
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touchCalibration_x1 -= touchCalibration_x0;
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touchCalibration_y1 -= touchCalibration_y0;
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if(touchCalibration_x0 == 0) touchCalibration_x0 = 1;
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if(touchCalibration_x1 == 0) touchCalibration_x1 = 1;
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if(touchCalibration_y0 == 0) touchCalibration_y0 = 1;
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if(touchCalibration_y1 == 0) touchCalibration_y1 = 1;
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if (touchCalibration_x0 == 0)
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touchCalibration_x0 = 1;
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if (touchCalibration_x1 == 0)
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touchCalibration_x1 = 1;
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if (touchCalibration_y0 == 0)
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touchCalibration_y0 = 1;
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if (touchCalibration_y1 == 0)
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touchCalibration_y1 = 1;
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// export parameters, if pointer valid
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if (parameters != NULL) {
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@ -321,7 +363,6 @@ void TFT_eSPI::calibrateTouch(uint16_t *parameters, uint32_t color_fg, uint32_t
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}
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}
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/***************************************************************************************
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** Function name: setTouch
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** Description: imports calibration parameters for touchscreen.
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@ -332,10 +373,14 @@ void TFT_eSPI::setTouch(uint16_t *parameters){
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touchCalibration_y0 = parameters[2];
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touchCalibration_y1 = parameters[3];
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if(touchCalibration_x0 == 0) touchCalibration_x0 = 1;
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if(touchCalibration_x1 == 0) touchCalibration_x1 = 1;
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if(touchCalibration_y0 == 0) touchCalibration_y0 = 1;
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if(touchCalibration_y1 == 0) touchCalibration_y1 = 1;
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if (touchCalibration_x0 == 0)
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touchCalibration_x0 = 1;
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if (touchCalibration_x1 == 0)
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touchCalibration_x1 = 1;
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if (touchCalibration_y0 == 0)
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touchCalibration_y0 = 1;
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if (touchCalibration_y1 == 0)
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touchCalibration_y1 = 1;
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touchCalibration_rotate = parameters[4] & 0x01;
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touchCalibration_invert_x = parameters[4] & 0x02;
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@ -1,3 +1,9 @@
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/*
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* @Date: 2020-07-23 12:53:53
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* @LastEditors: xfdr0805
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* @LastEditTime: 2020-07-23 13:04:02
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* @FilePath: \ESP8266_Weather_Station_Color\.pio\libdeps\esp12e\TFT_eSPI\Extensions\Touch.h
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*/
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// Coded by Bodmer 10/2/18, see license in root directory.
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// This is part of the TFT_eSPI class and is associated with the Touch Screen handlers
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@ -16,6 +22,7 @@
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void calibrateTouch(uint16_t* data, uint32_t color_fg, uint32_t color_bg, uint8_t size);
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// Set the screen calibration values
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void setTouch(uint16_t* data);
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void set_touch_rotation(uint8_t rotation);
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private:
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// Legacy support only - deprecated TODO: delete
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@ -32,6 +39,6 @@
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// Initialise with example calibration values so processor does not crash if setTouch() not called in setup()
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uint16_t touchCalibration_x0 = 300, touchCalibration_x1 = 3600, touchCalibration_y0 = 300, touchCalibration_y1 = 3600;
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uint8_t touchCalibration_rotate = 1, touchCalibration_invert_x = 2, touchCalibration_invert_y = 0;
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uint8_t _rotation = 0; //
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uint32_t _pressTime; // Press and hold time-out
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uint16_t _pressX, _pressY; // For future use (last sampled calibrated coordinates)
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