initial code import

3 files changed, 127 insertions, 0 deletions

diff --git a/hw/device.vala b/hw/device.vala
new file mode 100644
index 0000000..adee58a
--- /dev/null
+++ b/hw/device.vala
@@ -0,0 +1,17 @@
+/* Copyright 2012, Sebastian Reichel <sre@ring0.de>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+public class Device {
+}
diff --git a/hw/i2c-device.vala b/hw/i2c-device.vala
new file mode 100644
index 0000000..21193f2
--- /dev/null
+++ b/hw/i2c-device.vala
@@ -0,0 +1,90 @@
+/* Copyright 2012, Sebastian Reichel <sre@ring0.de>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+public errordomain I2CError {
+	IO_ERROR,
+	ERRNO,
+}
+
+public class I2CDevice : Device {
+	private int fd;
+
+	public I2CDevice(uint8 dev, uint8 addr) throws I2CError {
+		string file = "/dev/i2c-%u".printf(dev);
+		fd = Posix.open(file, Posix.O_RDWR);
+
+		if(fd < 0)
+			throw new I2CError.IO_ERROR("Could not open device!");
+
+		setup_address(addr);
+	}
+
+	~I2CDevice() {
+		Posix.close(fd);
+	}
+
+	protected void setup_address(uint8 addr) throws I2CError {
+		if(Posix.ioctl(fd, Linux.I2C.SLAVE, addr) < 0)
+			throw new I2CError.IO_ERROR("Could not seek to I2C device 0x%02x!", addr);
+	}
+
+	protected void write_byte(uint8 byte) throws I2CError {
+		if(Linux.I2C.SMBUS.write_byte(fd, byte) < 0) {
+			throw new I2CError.ERRNO("Could not write to I2C device: %s!", Posix.strerror(Posix.errno));
+		}
+	}
+
+	protected uint8 read_byte() throws I2CError {
+		int rc = Linux.I2C.SMBUS.read_byte(fd);
+		if(rc < 0)
+			throw new I2CError.ERRNO("Could not read from I2C device: %s!", Posix.strerror(Posix.errno));
+		return (uint8) rc;
+	}
+
+	protected uint8 get_byte(uint8 addr) throws I2CError {
+		int rc = Linux.I2C.SMBUS.read_word_data(fd, addr);
+		if(rc < 0)
+			throw new I2CError.ERRNO("Could not get byte %d from I2C device: %s!", addr, Posix.strerror(Posix.errno));
+		return (uint8) rc;
+	}
+
+	protected void set_byte(uint8 addr, uint8 val) throws I2CError {
+		int rc = Linux.I2C.SMBUS.write_word_data(fd, addr, val);
+		if(rc < 0)
+			throw new I2CError.ERRNO("Could not set byte %d to %d from I2C device: %s!", addr, val, Posix.strerror(Posix.errno));
+	}
+
+	protected uint16 get_big_word(uint8 addr) throws I2CError {
+		int rc = Linux.I2C.SMBUS.read_word_data(fd, addr);
+		if(rc < 0)
+			throw new I2CError.ERRNO("Could get word %d from I2C device: %s!", addr, Posix.strerror(Posix.errno));
+		return uint16.from_big_endian((uint16) rc);
+	}
+
+	protected uint16 get_little_word(uint8 addr) throws I2CError {
+		int rc = Linux.I2C.SMBUS.read_word_data(fd, addr);
+		if(rc < 0)
+			throw new I2CError.ERRNO("Could get word %d from I2C device: %s!", addr, Posix.strerror(Posix.errno));
+		return uint16.from_little_endian((uint16) rc);
+	}
+
+	protected uint8[] get_block(uint8 addr, uint8 size) throws I2CError {
+		uint8[] data = new uint8[size];
+		int rc = Linux.I2C.SMBUS.read_i2c_block_data(fd, addr, data);
+		if(rc < 0)
+			throw new I2CError.ERRNO("Could get word %d from I2C device: %s!", addr, Posix.strerror(Posix.errno));
+		return data;
+	}
+}
diff --git a/hw/serial-device.vala b/hw/serial-device.vala
new file mode 100644
index 0000000..bbd7698
--- /dev/null
+++ b/hw/serial-device.vala
@@ -0,0 +1,20 @@
+/* Copyright 2012, Sebastian Reichel <sre@ring0.de>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+public class SerialDevice : Device {
+
+	/* TODO */
+
+}