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Change SPI clock so that we're not violating the touch sensor's timing

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This commit is contained in:
Reed Nightingale 2020-01-01 20:26:34 -08:00
parent 5d7c66dc0c
commit ad2e8341d5
1 changed files with 5 additions and 5 deletions
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10
nano_gui.cpp
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@ -62,6 +62,7 @@ static void touch_update(){
uint32_t now = millis();
if (now - msraw < MSEC_THRESHOLD) return;
SPI.setClockDivider(SPI_CLOCK_DIV8);//2MHz
digitalWrite(CS_PIN, LOW);
SPI.transfer(0xB1 /* Z1 */);
int16_t z1 = SPI.transfer16(0xC1 /* Z2 */) >> 3;
@ -79,7 +80,8 @@ static void touch_update(){
data[4] = SPI.transfer16(0xD0 /* Y */) >> 3; // Last Y touch power down
data[5] = SPI.transfer16(0) >> 3;
digitalWrite(CS_PIN, HIGH);
//Serial.printf("z=%d :: z1=%d, z2=%d ", z, z1, z2);
SPI.setClockDivider(SPI_CLOCK_DIV2);//Return to full speed for TFT
if (z < 0) z = 0;
if (z < Z_THRESHOLD) { // if ( !touched ) {
// Serial.println();
@ -121,7 +123,7 @@ boolean readTouch(){
if (zraw >= Z_THRESHOLD) {
ts_point.x = xraw;
ts_point.y = yraw;
// Serial.print(ts_point.x); Serial.print(",");Serial.println(ts_point.y);
//Serial.print(ts_point.x); Serial.print(",");Serial.println(ts_point.y);
return true;
}
return false;
@ -131,9 +133,7 @@ void scaleTouch(struct Point *p){
p->x = ((long)(p->x - offset_x) * 10l)/ (long)slope_x;
p->y = ((long)(p->y - offset_y) * 10l)/ (long)slope_y;
// Serial.print(p->x); Serial.print(",");Serial.println(p->y);
// p->y = ((long)(p->y) * 10l)/(long)(slope_y) - offset_y;
//Serial.print(p->x); Serial.print(",");Serial.println(p->y);
}
/*****************