Diff: hal/analogout_api.h

Revision:

144:ef7eb2e8f9f7

Parent:

0:9b334a45a8ff

--- a/hal/analogout_api.h	Tue Aug 02 14:07:36 2016 +0000
+++ b/hal/analogout_api.h	Fri Sep 02 15:07:44 2016 +0100
@@ -1,42 +1,88 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef MBED_ANALOGOUT_API_H
-#define MBED_ANALOGOUT_API_H
-
-#include "device.h"
-
-#if DEVICE_ANALOGOUT
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef struct dac_s dac_t;
-
-void     analogout_init     (dac_t *obj, PinName pin);
-void     analogout_free     (dac_t *obj);
-void     analogout_write    (dac_t *obj, float value);
-void     analogout_write_u16(dac_t *obj, uint16_t value);
-float    analogout_read     (dac_t *obj);
-uint16_t analogout_read_u16 (dac_t *obj);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-#endif
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef MBED_ANALOGOUT_API_H
+#define MBED_ANALOGOUT_API_H
+
+#include "device.h"
+
+#if DEVICE_ANALOGOUT
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Analogout hal structure. dac_s is declared in the target's hal
+ */
+typedef struct dac_s dac_t;
+
+/**
+ * \defgroup hal_analogout Analogout hal functions
+ * @{
+ */
+
+/** Initialize the analogout peripheral
+ *
+ * Configures the pin used by analogout.
+ * @param obj The analogout object to initialize
+ * @param pin The analogout pin name
+ */
+void analogout_init(dac_t *obj, PinName pin);
+
+/** Release the analogout object
+ *
+ * Note: This is not currently used in the mbed-drivers
+ * @param obj The analogout object
+ */
+void analogout_free(dac_t *obj);
+
+/** Set the output voltage, specified as a percentage (float)
+ *
+ * @param obj The analogin object
+ * @param value The floating-point output voltage to be set
+ */
+void analogout_write(dac_t *obj, float value);
+
+/** Set the output voltage, specified as unsigned 16-bit
+ *
+ * @param obj The analogin object
+ * @param value The unsigned 16-bit output voltage to be set
+ */
+void analogout_write_u16(dac_t *obj, uint16_t value);
+
+/** Read the current voltage value on the pin
+ *
+ * @param obj The analogin object
+ * @return A floating-point value representing the current voltage on the pin,
+ *     measured as a percentage
+ */
+float analogout_read(dac_t *obj);
+
+/** Read the current voltage value on the pin, as a normalized unsigned 16bit value
+ *
+ * @param obj The analogin object
+ * @return An unsigned 16-bit value representing the current voltage on the pin
+ */
+uint16_t analogout_read_u16(dac_t *obj);
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#endif