use new cap-touch interface; don't limit number of touches

drivers/cap1298.c

@@ -15,6 +15,7 @@
 #define GEN_STATUS_ADDR 0x2
 #define SEN_STATUS_ADDR 0x3
 
+#define REPEAT_ENABLE_ADDR 0x28
 #define MULTI_TOUCH_CFG_ADDR 0x2a
 
 static void writeReg(uint8_t reg, uint8_t val) {
@@ -31,25 +32,28 @@ static int readReg(uint8_t reg) {
     return r;
 }
 
+static void clear_int(void) {
+    writeReg(MAIN_CONTROL_ADDR, 0b00000000); // no multi-touch processing; we let app do that
+    writeReg(REPEAT_ENABLE_ADDR, 0);
+}
+
 void *cap1298_read(void) {
+    clear_int();
     uint8_t gen_status;
     uint8_t sen_status;
-    static uint32_t sample[1];
+    static uint16_t sample[8];
     readData(GEN_STATUS_ADDR, &gen_status, 1);
     readData(SEN_STATUS_ADDR, &sen_status, 1);
     writeReg(MAIN_CONTROL_ADDR, 0b00000000);
     // DMESG("G: %x S: %x", gen_status, sen_status);
-    sample[0] = sen_status;
+    for (int i = 0; i < 8; ++i)
+        sample[i] = sen_status & (1 << i) ? 0xffff : 0x0000;
     return sample;
 }
 
 void cap1298_cfg(void) {
-#ifdef PIN_INT
-    writeReg(INT_EN_ADDR, 0xff);
-#endif
-    writeReg(MAIN_CONTROL_ADDR, 0b00000000);
-
-    writeReg(MULTI_TOUCH_CFG_ADDR, 0b10001100);
+    clear_int();
+    writeReg(MULTI_TOUCH_CFG_ADDR, 0b00000000);
 }
 
 void cap1298_init(void) {