Lucas Teske revised this gist 6 years ago. Go to revision
1 file changed, 59 insertions
touch_test3.ino(file created)
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| 1 | + | #include <SPI.h> | |
| 2 | + | ||
| 3 | + | #define SCK D5 | |
| 4 | + | #define MISO D6 | |
| 5 | + | #define CS D8 | |
| 6 | + | #define MOSI D7 | |
| 7 | + | ||
| 8 | + | ||
| 9 | + | void setup() { | |
| 10 | + | Serial.begin(115200); | |
| 11 | + | Serial.println("OK"); | |
| 12 | + | ||
| 13 | + | pinMode(SCK, OUTPUT); | |
| 14 | + | pinMode(CS, OUTPUT); | |
| 15 | + | pinMode(MOSI, OUTPUT); | |
| 16 | + | pinMode(MISO, INPUT); | |
| 17 | + | ||
| 18 | + | digitalWrite(CS, HIGH); | |
| 19 | + | ||
| 20 | + | SPI.pins(SCK, MISO, MOSI, CS); | |
| 21 | + | SPI.begin(); | |
| 22 | + | } | |
| 23 | + | ||
| 24 | + | void loop() { | |
| 25 | + | digitalWrite(CS, LOW); | |
| 26 | + | uint8_t data = SPI.transfer(0xFF); // Always transfer full 1 bits | |
| 27 | + | digitalWrite(CS, HIGH); | |
| 28 | + | ||
| 29 | + | uint8_t flag = data & 0x80; // Get the 7th bit | |
| 30 | + | data &= 0x7F; // Reset it, so we have only the pure value in data | |
| 31 | + | ||
| 32 | + | if (data != 0x7F) { | |
| 33 | + | // We have some data, not all 1's | |
| 34 | + | if (flag) { // Buttons | |
| 35 | + | Serial.print("BUTTONS: "); | |
| 36 | + | switch (data) { | |
| 37 | + | case 0: | |
| 38 | + | Serial.println("RIGHT"); | |
| 39 | + | break | |
| 40 | + | case 1: | |
| 41 | + | Serial.println("POWER"); | |
| 42 | + | break | |
| 43 | + | case 2: | |
| 44 | + | Serial.println("LEFT"); | |
| 45 | + | break | |
| 46 | + | } | |
| 47 | + | } else { // Slider | |
| 48 | + | Serial.print("SLIDER: "); | |
| 49 | + | // MAX is 54 and MIN is 1 so: | |
| 50 | + | uint16_t v = (uint16_t)data; | |
| 51 | + | v -= 1; // MIN | |
| 52 | + | v *= 100; // Percent | |
| 53 | + | v /= (54 - 1); // MAX - MIN | |
| 54 | + | Serial.print(v); | |
| 55 | + | Serial.println("%"); | |
| 56 | + | } | |
| 57 | + | } | |
| 58 | + | delay(100); | |
| 59 | + | } | |
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