Support for VEML6075 and initial Support for VEML7700

I2CDEVICES.md

@@ -69,4 +69,6 @@ Index | Define              | Driver  | Device   | Address(es) | Description
   45  | USE_HDC1080         | xsns_65 | HDC1080  | 0x40        | Temperature and Humidity sensor
   46  | USE_IAQ             | xsns_66 | IAQ      | 0x5a        | Air quality sensor
   47  | USE_DISPLAY_SEVENSEG| xdsp_11 | HT16K33  | 0x70 - 0x77 | Seven segment LED
-  48  | USE_AS3935          | xsns_67 | AS3935   | 0x03        | Franklin Lightning Sensor 
+  48  | USE_AS3935          | xsns_67 | AS3935   | 0x03        | Franklin Lightning Sensor
+  49  | USE_VEML6075        | xsns_68 | VEML6075 | 0x10        | UVA/UVB/UVINDEX Sensor
+  50  | USE_VEML7700        | xsns_69 | VEML7700 | 0x10        | Ambient light intensity sensor

lib/Adafruit_BusIO/.travis.yml

@@ -0,0 +1,23 @@
+language: c
+sudo: false
+cache:
+  directories:
+    - ~/arduino_ide
+    - ~/.arduino15/packages/
+git:
+  depth: false
+  quiet: true
+env:
+  global:
+     - PRETTYNAME="Adafruit BusIO Library"
+
+before_install:
+   - source <(curl -SLs https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/install.sh)
+
+script:
+   - build_main_platforms
+
+# Generate and deploy documentation
+after_success:
+  - source <(curl -SLs  https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/library_check.sh)
+  - source <(curl -SLs  https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/doxy_gen_and_deploy.sh)

lib/Adafruit_BusIO/Adafruit_BusIO_Register.cpp

@@ -0,0 +1,258 @@
+#include <Adafruit_BusIO_Register.h>
+
+/*!
+ *    @brief  Create a register we access over an I2C Device (which defines the bus and address)
+ *    @param  i2cdevice The I2CDevice to use for underlying I2C access
+ *    @param  reg_addr The address pointer value for the I2C/SMBus register, can be 8 or 16 bits
+ *    @param  width    The width of the register data itself, defaults to 1 byte
+ *    @param  bitorder The bit order of the register (used when width is > 1), defaults to LSBFIRST
+ *    @param  address_width The width of the register address itself, defaults to 1 byte
+ */
+Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice, uint16_t reg_addr, 
+						 uint8_t width, uint8_t bitorder, uint8_t address_width) {
+  _i2cdevice = i2cdevice;
+  _spidevice = NULL;
+  _addrwidth = address_width;
+  _address = reg_addr;
+  _bitorder = bitorder;
+  _width = width;
+}
+
+/*!
+ *    @brief  Create a register we access over an SPI Device (which defines the bus and CS pin)
+ *    @param  spidevice The SPIDevice to use for underlying I2C access
+ *    @param  reg_addr The address pointer value for the I2C/SMBus register, can be 8 or 16 bits
+ *    @param  type     The method we use to read/write data to SPI (which is not as well defined as I2C)
+ *    @param  width    The width of the register data itself, defaults to 1 byte
+ *    @param  bitorder The bit order of the register (used when width is > 1), defaults to LSBFIRST
+ *    @param  address_width The width of the register address itself, defaults to 1 byte
+ */
+Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_SPIDevice *spidevice, uint16_t reg_addr, 
+						 Adafruit_BusIO_SPIRegType type,
+						 uint8_t width, uint8_t bitorder, uint8_t address_width) {
+  _spidevice = spidevice;
+  _spiregtype = type;
+  _i2cdevice = NULL;
+  _addrwidth = address_width;
+  _address = reg_addr;
+  _bitorder = bitorder;
+  _width = width;
+}
+
+/*!
+ *    @brief  Create a register we access over an I2C or SPI Device. This is a handy function because we
+ *            can pass in NULL for the unused interface, allowing libraries to mass-define all the registers
+ *    @param  i2cdevice The I2CDevice to use for underlying I2C access, if NULL we use SPI
+ *    @param  spidevice The SPIDevice to use for underlying I2C access, if NULL we use I2C
+ *    @param  reg_addr The address pointer value for the I2C/SMBus register, can be 8 or 16 bits
+ *    @param  type     The method we use to read/write data to SPI (which is not as well defined as I2C)
+ *    @param  width    The width of the register data itself, defaults to 1 byte
+ *    @param  bitorder The bit order of the register (used when width is > 1), defaults to LSBFIRST
+ *    @param  address_width The width of the register address itself, defaults to 1 byte
+ */
+Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice, Adafruit_SPIDevice *spidevice, 
+						  Adafruit_BusIO_SPIRegType type, uint16_t reg_addr,
+						 uint8_t width, uint8_t bitorder, uint8_t address_width) {
+  _spidevice = spidevice;
+  _i2cdevice = i2cdevice;
+  _spiregtype = type;
+  _addrwidth = address_width;
+  _address = reg_addr;
+  _bitorder = bitorder;
+  _width = width;
+}
+
+
+/*!
+ *    @brief  Write a buffer of data to the register location
+ *    @param  buffer Pointer to data to write
+ *    @param  len Number of bytes to write
+ *    @return True on successful write (only really useful for I2C as SPI is uncheckable)
+ */
+bool Adafruit_BusIO_Register::write(uint8_t *buffer, uint8_t len) {
+
+  uint8_t addrbuffer[2] = {(uint8_t)(_address & 0xFF), (uint8_t)(_address>>8)};
+
+  if (_i2cdevice) {
+    return _i2cdevice->write(buffer, len, true, addrbuffer, _addrwidth);
+  }
+  if (_spidevice) {
+    if (_spiregtype == ADDRBIT8_HIGH_TOREAD) {
+      addrbuffer[0] &= ~0x80;
+    }
+    return _spidevice->write( buffer, len, addrbuffer, _addrwidth);
+  }
+  return false;
+}
+
+/*!
+ *    @brief  Write up to 4 bytes of data to the register location
+ *    @param  value Data to write
+ *    @param  numbytes How many bytes from 'value' to write
+ *    @return True on successful write (only really useful for I2C as SPI is uncheckable)
+ */
+bool Adafruit_BusIO_Register::write(uint32_t value, uint8_t numbytes) {
+  if (numbytes == 0) {
+    numbytes = _width;
+  }
+  if (numbytes > 4) {
+    return false;
+  }
+
+  for (int i=0; i<numbytes; i++) {
+    if (_bitorder == LSBFIRST) {
+      _buffer[i] = value & 0xFF;
+    } else {
+      _buffer[numbytes-i-1] = value & 0xFF;
+    }
+    value >>= 8;
+  }
+  return write(_buffer, numbytes);
+}
+
+/*!
+ *    @brief  Read data from the register location. This does not do any error checking! 
+ *    @return Returns 0xFFFFFFFF on failure, value otherwise
+ */
+uint32_t Adafruit_BusIO_Register::read(void) {
+  if (! read(_buffer, _width)) {
+    return -1;
+  }
+
+  uint32_t value = 0;
+
+   for (int i=0; i < _width; i++) {
+     value <<= 8;
+     if (_bitorder == LSBFIRST) {
+       value |= _buffer[_width-i-1];
+     } else {
+       value |= _buffer[i];
+     }
+   }
+
+   return value;
+}
+
+
+/*!
+ *    @brief  Read a buffer of data from the register location
+ *    @param  buffer Pointer to data to read into
+ *    @param  len Number of bytes to read
+ *    @return True on successful write (only really useful for I2C as SPI is uncheckable)
+ */
+bool Adafruit_BusIO_Register::read(uint8_t *buffer, uint8_t len) {
+  uint8_t addrbuffer[2] = {(uint8_t)(_address & 0xFF), (uint8_t)(_address>>8)};
+
+  if (_i2cdevice) {
+    return _i2cdevice->write_then_read(addrbuffer, _addrwidth, buffer, len);
+  }
+  if (_spidevice) {
+    if (_spiregtype == ADDRBIT8_HIGH_TOREAD) {
+      addrbuffer[0] |= 0x80;
+    }
+    return _spidevice->write_then_read(addrbuffer, _addrwidth, buffer, len);
+  }
+  return false;
+}
+
+/*!
+ *    @brief  Read 2 bytes of data from the register location
+ *    @param  value Pointer to uint16_t variable to read into
+ *    @return True on successful write (only really useful for I2C as SPI is uncheckable)
+ */
+bool Adafruit_BusIO_Register::read(uint16_t *value) {
+  if (! read(_buffer, 2)) {
+    return false;
+  }
+
+  if (_bitorder == LSBFIRST) {
+    *value = _buffer[1];
+    *value <<= 8;
+    *value |= _buffer[0];
+  } else {
+    *value = _buffer[0];
+    *value <<= 8;
+    *value |= _buffer[1];
+  }
+  return true;
+}
+
+/*!
+ *    @brief  Read 1 byte of data from the register location
+ *    @param  value Pointer to uint8_t variable to read into
+ *    @return True on successful write (only really useful for I2C as SPI is uncheckable)
+ */
+bool Adafruit_BusIO_Register::read(uint8_t *value) {
+  if (! read(_buffer, 1)) {
+    return false;
+  }
+
+  *value = _buffer[0];
+  return true;
+}
+
+/*!
+ *    @brief  Pretty printer for this register
+ *    @param  s The Stream to print to, defaults to &Serial
+ */
+void Adafruit_BusIO_Register::print(Stream *s) {
+  uint32_t val = read();
+  s->print("0x"); s->print(val, HEX);
+}
+
+/*!
+ *    @brief  Pretty printer for this register
+ *    @param  s The Stream to print to, defaults to &Serial
+ */
+void Adafruit_BusIO_Register::println(Stream *s) {
+  print(s);
+  s->println();
+}
+
+
+/*!
+ *    @brief  Create a slice of the register that we can address without touching other bits
+ *    @param  reg The Adafruit_BusIO_Register which defines the bus/register
+ *    @param  bits The number of bits wide we are slicing
+ *    @param  shift The number of bits that our bit-slice is shifted from LSB
+ */
+Adafruit_BusIO_RegisterBits::Adafruit_BusIO_RegisterBits(Adafruit_BusIO_Register *reg, uint8_t bits, uint8_t shift) {
+  _register = reg;
+  _bits = bits;
+  _shift = shift;
+}
+
+/*!
+ *    @brief  Read 4 bytes of data from the register
+ *    @return  data The 4 bytes to read
+ */
+uint32_t Adafruit_BusIO_RegisterBits::read(void) {
+  uint32_t val = _register->read();
+  val >>= _shift;
+  return val & ((1 << (_bits)) - 1);
+}
+
+
+/*!
+ *    @brief  Write 4 bytes of data to the register
+ *    @param  data The 4 bytes to write
+ */
+void Adafruit_BusIO_RegisterBits::write(uint32_t data) {
+  uint32_t val = _register->read();
+
+  // mask off the data before writing
+  uint32_t mask = (1 << (_bits)) - 1;
+  data &= mask;
+
+  mask <<= _shift;
+  val &= ~mask;      // remove the current data at that spot
+  val |= data << _shift; // and add in the new data
+
+  _register->write(val, _register->width());
+}
+
+/*!
+ *    @brief  The width of the register data, helpful for doing calculations
+ *    @returns The data width used when initializing the register
+ */
+uint8_t Adafruit_BusIO_Register::width(void) { return _width; }

lib/Adafruit_BusIO/Adafruit_BusIO_Register.h

@@ -0,0 +1,69 @@
+#include <Adafruit_I2CDevice.h>
+#include <Adafruit_SPIDevice.h>
+#include <Arduino.h>
+
+
+#ifndef Adafruit_BusIO_Register_h
+#define Adafruit_BusIO_Register_h
+
+typedef enum _Adafruit_BusIO_SPIRegType {
+  ADDRBIT8_HIGH_TOREAD = 0,
+} Adafruit_BusIO_SPIRegType;
+
+/*!
+ * @brief The class which defines a device register (a location to read/write data from)
+ */
+class Adafruit_BusIO_Register {
+ public:
+  Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice, uint16_t reg_addr, 
+			  uint8_t width=1, uint8_t bitorder=LSBFIRST,
+			  uint8_t address_width=1); 
+  Adafruit_BusIO_Register(Adafruit_SPIDevice *spidevice, uint16_t reg_addr, 
+			  Adafruit_BusIO_SPIRegType type,
+			  uint8_t width=1, uint8_t bitorder=LSBFIRST,
+			  uint8_t address_width=1); 
+
+  Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice,
+			  Adafruit_SPIDevice *spidevice, 
+			  Adafruit_BusIO_SPIRegType type,
+			  uint16_t reg_addr, 
+			  uint8_t width=1, uint8_t bitorder=LSBFIRST,
+			  uint8_t address_width=1); 
+
+  bool read(uint8_t *buffer, uint8_t len);
+  bool read(uint8_t *value);
+  bool read(uint16_t *value);
+  uint32_t read(void);
+  bool write(uint8_t *buffer, uint8_t len);
+  bool write(uint32_t value, uint8_t numbytes=0);
+
+  uint8_t width(void);
+
+  void print(Stream *s=&Serial);
+  void println(Stream *s=&Serial);
+
+ private:
+  Adafruit_I2CDevice *_i2cdevice;
+  Adafruit_SPIDevice *_spidevice;
+  Adafruit_BusIO_SPIRegType _spiregtype;
+  uint16_t _address;
+  uint8_t _width, _addrwidth, _bitorder;
+  uint8_t _buffer[4];      // we wont support anything larger than uint32 for non-buffered read
+};
+
+
+/*!
+ * @brief The class which defines a slice of bits from within a device register (a location to read/write data from)
+ */
+class Adafruit_BusIO_RegisterBits {
+ public:
+  Adafruit_BusIO_RegisterBits(Adafruit_BusIO_Register *reg, uint8_t bits, uint8_t shift);
+  void write(uint32_t value);
+  uint32_t read(void);
+ private:
+  Adafruit_BusIO_Register *_register;
+  uint8_t _bits, _shift;
+};
+
+
+#endif //BusIO_Register_h