Add VEML6070 I2C UV sensor driver

diff --git a/include/extdrv/veml6070_uv_sensor.h b/include/extdrv/veml6070_uv_sensor.h
new file mode 100644 (file)
index 0000000..7e6e5f6
--- /dev/null
+++ b/include/extdrv/veml6070_uv_sensor.h
@@ -0,0 +1,79 @@
+/****************************************************************************
+ *   extdrv/veml6070_uv_sensor.h
+ *
+ * VEML6070 I2C UV sensor driver
+ *
+ * Copyright 2016 Nathael Pajani <nathael.pajani@ed3l.fr>
+ *
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *************************************************************************** */
+
+#ifndef EXTDRV_VEML6070_H
+#define EXTDRV_VEML6070_H
+
+#include "lib/stdint.h"
+
+
+
+/* VEML6070 sensor instance data.
+ * Note that the veml6070 sensor adress cannot be changed.
+ */
+struct veml6070_sensor_config {
+    uint8_t addr;
+       uint8_t bus_num;
+    uint8_t probe_ok;
+    uint8_t actual_config;
+};
+
+
+/* Defines for command byte */
+#define VEML6070_ACK               (1 << 5)
+#define VEML6070_ACK_THD_102       (0)
+#define VEML6070_ACK_THD_145       (1 << 4)
+#define VEML6070_NO_ACK            (0)
+#define VEML6070_INTEG_05T         (0x00 << 2)
+#define VEML6070_INTEG_1T          (0x01 << 2)
+#define VEML6070_INTEG_2T          (0x02 << 2)
+#define VEML6070_INTEG_4T          (0x03 << 2)
+#define VEML6070_DISABLE           (1 << 0)
+#define VEML6070_ENABLE            (0)
+
+
+/* Check the sensor presence, return 1 if found */
+int veml6070_probe_sensor(struct veml6070_sensor_config* conf);
+
+
+/* UV Read
+ * Performs a read of the uv data from the sensor.
+ * 'uv_raw': integer addresses for conversion result.
+ * Return value(s):
+ *   Upon successfull completion, returns 0 and the value read is placed in the provided integer.
+ *   On error, returns a negative integer equivalent to errors from glibc.
+ */
+int veml6070_sensor_read(struct veml6070_sensor_config* conf, uint16_t* uv_raw);
+
+
+/* Sensor config
+ * Performs default configuration of the UV sensor.
+ * Return value:
+ *   Upon successfull completion, returns 0. On error, returns a negative integer
+ *   equivalent to errors from glibc.
+ */
+int veml6070_configure(struct veml6070_sensor_config* conf);
+
+
+#endif /* EXTDRV_VEML6070_H */
+