--- /dev/null
+/*
+ CapacitiveSense.h v.04 - Capacitive Sensing Library for 'duino / Wiring
+ https://github.com/PaulStoffregen/CapacitiveSensor
+ http://www.pjrc.com/teensy/td_libs_CapacitiveSensor.html
+ http://playground.arduino.cc/Main/CapacitiveSensor
+ Copyright (c) 2008 Paul Bagder All rights reserved.
+ Version 05 by Paul Stoffregen - Support non-AVR board: Teensy 3.x, Arduino Due
+ Version 04 by Paul Stoffregen - Arduino 1.0 compatibility, issue 146 fix
+ vim: set ts=4:
+*/
+
+// ensure this library description is only included once
+#ifndef CapacitiveSensor_h
+#define CapacitiveSensor_h
+
+#if ARDUINO >= 100
+#include "Arduino.h"
+#else
+#include "WProgram.h"
+#endif
+
+// Direct I/O through registers and bitmask (from OneWire library)
+
+#if defined(__AVR__)
+#define PIN_TO_BASEREG(pin) (portInputRegister(digitalPinToPort(pin)))
+#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint8_t
+#define DIRECT_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask) ((*((base)+1)) &= ~(mask), (*((base)+2)) &= ~(mask))
+#define DIRECT_MODE_OUTPUT(base, mask) ((*((base)+1)) |= (mask))
+#define DIRECT_WRITE_LOW(base, mask) ((*((base)+2)) &= ~(mask))
+#define DIRECT_WRITE_HIGH(base, mask) ((*((base)+2)) |= (mask))
+
+#elif defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK66FX1M0__) || defined(__MK64FX512__)
+#define PIN_TO_BASEREG(pin) (portOutputRegister(pin))
+#define PIN_TO_BITMASK(pin) (1)
+#define IO_REG_TYPE uint8_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, mask) (*((base)+512))
+#define DIRECT_MODE_INPUT(base, mask) (*((base)+640) = 0)
+#define DIRECT_MODE_OUTPUT(base, mask) (*((base)+640) = 1)
+#define DIRECT_WRITE_LOW(base, mask) (*((base)+256) = 1)
+#define DIRECT_WRITE_HIGH(base, mask) (*((base)+128) = 1)
+
+#elif defined(__MKL26Z64__)
+#define PIN_TO_BASEREG(pin) (portOutputRegister(pin))
+#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint8_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, mask) ((*((base)+16) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask) (*((base)+20) &= ~(mask))
+#define DIRECT_MODE_OUTPUT(base, mask) (*((base)+20) |= (mask))
+#define DIRECT_WRITE_LOW(base, mask) (*((base)+8) = (mask))
+#define DIRECT_WRITE_HIGH(base, mask) (*((base)+4) = (mask))
+
+#elif defined(__SAM3X8E__)
+#define PIN_TO_BASEREG(pin) (&(digitalPinToPort(pin)->PIO_PER))
+#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, mask) (((*((base)+15)) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask) ((*((base)+5)) = (mask))
+#define DIRECT_MODE_OUTPUT(base, mask) ((*((base)+4)) = (mask))
+#define DIRECT_WRITE_LOW(base, mask) ((*((base)+13)) = (mask))
+#define DIRECT_WRITE_HIGH(base, mask) ((*((base)+12)) = (mask))
+
+#elif defined(__PIC32MX__)
+#define PIN_TO_BASEREG(pin) (portModeRegister(digitalPinToPort(pin)))
+#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, mask) (((*(base+4)) & (mask)) ? 1 : 0) //PORTX + 0x10
+#define DIRECT_MODE_INPUT(base, mask) ((*(base+2)) = (mask)) //TRISXSET + 0x08
+#define DIRECT_MODE_OUTPUT(base, mask) ((*(base+1)) = (mask)) //TRISXCLR + 0x04
+#define DIRECT_WRITE_LOW(base, mask) ((*(base+8+1)) = (mask)) //LATXCLR + 0x24
+#define DIRECT_WRITE_HIGH(base, mask) ((*(base+8+2)) = (mask)) //LATXSET + 0x28
+
+#elif defined(ARDUINO_ARCH_ESP8266)
+#define PIN_TO_BASEREG(pin) (portOutputRegister(digitalPinToPort(pin)))
+#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, mask) (((*(base+6)) & (mask)) ? 1 : 0) //GPIO_IN_ADDRESS
+#define DIRECT_MODE_INPUT(base, mask) ((*(base+5)) = (mask)) //GPIO_ENABLE_W1TC_ADDRESS
+#define DIRECT_MODE_OUTPUT(base, mask) ((*(base+4)) = (mask)) //GPIO_ENABLE_W1TS_ADDRESS
+#define DIRECT_WRITE_LOW(base, mask) ((*(base+2)) = (mask)) //GPIO_OUT_W1TC_ADDRESS
+#define DIRECT_WRITE_HIGH(base, mask) ((*(base+1)) = (mask)) //GPIO_OUT_W1TS_ADDRESS
+
+#elif defined(__SAMD21G18A__)
+// runs extremely slow/unreliable on Arduino Zero - help wanted....
+#define PIN_TO_BASEREG(pin) portModeRegister(digitalPinToPort(pin))
+#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, mask) (((*((base)+8)) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask) ((*((base)+1)) = (mask))
+#define DIRECT_MODE_OUTPUT(base, mask) ((*((base)+2)) = (mask))
+#define DIRECT_WRITE_LOW(base, mask) ((*((base)+5)) = (mask))
+#define DIRECT_WRITE_HIGH(base, mask) ((*((base)+6)) = (mask))
+
+#elif defined(RBL_NRF51822)
+#define PIN_TO_BASEREG(pin) (0)
+#define PIN_TO_BITMASK(pin) (pin)
+#define IO_REG_TYPE uint32_t
+#define IO_REG_ASM
+#define DIRECT_READ(base, pin) nrf_gpio_pin_read(pin)
+#define DIRECT_WRITE_LOW(base, pin) nrf_gpio_pin_clear(pin)
+#define DIRECT_WRITE_HIGH(base, pin) nrf_gpio_pin_set(pin)
+#define DIRECT_MODE_INPUT(base, pin) nrf_gpio_cfg_input(pin, NRF_GPIO_PIN_NOPULL)
+#define DIRECT_MODE_OUTPUT(base, pin) nrf_gpio_cfg_output(pin)
+
+#elif defined(__arc__)
+
+#include "scss_registers.h"
+#include "portable.h"
+#include "avr/pgmspace.h"
+
+#define GPIO_ID(pin) (g_APinDescription[pin].ulGPIOId)
+#define GPIO_TYPE(pin) (g_APinDescription[pin].ulGPIOType)
+#define GPIO_BASE(pin) (g_APinDescription[pin].ulGPIOBase)
+#define DIR_OFFSET_SS 0x01
+#define DIR_OFFSET_SOC 0x04
+#define EXT_PORT_OFFSET_SS 0x0A
+#define EXT_PORT_OFFSET_SOC 0x50
+
+/* GPIO registers base address */
+#define PIN_TO_BASEREG(pin) ((volatile uint32_t *)g_APinDescription[pin].ulGPIOBase)
+#define PIN_TO_BITMASK(pin) pin
+#define IO_REG_TYPE uint32_t
+#define IO_REG_ASM
+
+static inline __attribute__((always_inline))
+IO_REG_TYPE directRead(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+ IO_REG_TYPE ret;
+ if (SS_GPIO == GPIO_TYPE(pin)) {
+ ret = READ_ARC_REG(((IO_REG_TYPE)base + EXT_PORT_OFFSET_SS));
+ } else {
+ ret = MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, EXT_PORT_OFFSET_SOC);
+ }
+ return ((ret >> GPIO_ID(pin)) & 0x01);
+}
+
+static inline __attribute__((always_inline))
+void directModeInput(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+ if (SS_GPIO == GPIO_TYPE(pin)) {
+ WRITE_ARC_REG(READ_ARC_REG((((IO_REG_TYPE)base) + DIR_OFFSET_SS)) & ~(0x01 << GPIO_ID(pin)),
+ ((IO_REG_TYPE)(base) + DIR_OFFSET_SS));
+ } else {
+ MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, DIR_OFFSET_SOC) &= ~(0x01 << GPIO_ID(pin));
+ }
+}
+
+static inline __attribute__((always_inline))
+void directModeOutput(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+ if (SS_GPIO == GPIO_TYPE(pin)) {
+ WRITE_ARC_REG(READ_ARC_REG(((IO_REG_TYPE)(base) + DIR_OFFSET_SS)) | (0x01 << GPIO_ID(pin)),
+ ((IO_REG_TYPE)(base) + DIR_OFFSET_SS));
+ } else {
+ MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, DIR_OFFSET_SOC) |= (0x01 << GPIO_ID(pin));
+ }
+}
+
+static inline __attribute__((always_inline))
+void directWriteLow(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+ if (SS_GPIO == GPIO_TYPE(pin)) {
+ WRITE_ARC_REG(READ_ARC_REG(base) & ~(0x01 << GPIO_ID(pin)), base);
+ } else {
+ MMIO_REG_VAL(base) &= ~(0x01 << GPIO_ID(pin));
+ }
+}
+
+static inline __attribute__((always_inline))
+void directWriteHigh(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+ if (SS_GPIO == GPIO_TYPE(pin)) {
+ WRITE_ARC_REG(READ_ARC_REG(base) | (0x01 << GPIO_ID(pin)), base);
+ } else {
+ MMIO_REG_VAL(base) |= (0x01 << GPIO_ID(pin));
+ }
+}
+
+#define DIRECT_READ(base, pin) directRead(base, pin)
+#define DIRECT_MODE_INPUT(base, pin) directModeInput(base, pin)
+#define DIRECT_MODE_OUTPUT(base, pin) directModeOutput(base, pin)
+#define DIRECT_WRITE_LOW(base, pin) directWriteLow(base, pin)
+#define DIRECT_WRITE_HIGH(base, pin) directWriteHigh(base, pin)
+
+#endif
+
+// some 3.3V chips with 5V tolerant pins need this workaround
+//
+#if defined(__MK20DX256__)
+#define FIVE_VOLT_TOLERANCE_WORKAROUND
+#endif
+
+// library interface description
+class CapacitiveSensor
+{
+ // user-accessible "public" interface
+ public:
+ // methods
+ CapacitiveSensor(uint8_t sendPin, uint8_t receivePin);
+ long capacitiveSensorRaw(uint8_t samples);
+ long capacitiveSensor(uint8_t samples);
+ void set_CS_Timeout_Millis(unsigned long timeout_millis);
+ void reset_CS_AutoCal();
+ void set_CS_AutocaL_Millis(unsigned long autoCal_millis);
+ // library-accessible "private" interface
+ private:
+ // variables
+ int error;
+ unsigned long leastTotal;
+ unsigned int loopTimingFactor;
+ unsigned long CS_Timeout_Millis;
+ unsigned long CS_AutocaL_Millis;
+ unsigned long lastCal;
+ unsigned long total;
+ IO_REG_TYPE sBit; // send pin's ports and bitmask
+ volatile IO_REG_TYPE *sReg;
+ IO_REG_TYPE rBit; // receive pin's ports and bitmask
+ volatile IO_REG_TYPE *rReg;
+ // methods
+ int SenseOneCycle(void);
+};
+
+#endif
projects / sketchbook_andrea / blobdiff