iio_widget: Reenable reading all channel attributes

Signed-off-by: Dan <[email protected]>

Author: dNechita

iio_utils.c

@@ -326,3 +326,24 @@ void dev_attr_read_all(struct iio_device *dev,
 		}
 	}
 }
+
+void chn_attr_read_all(struct iio_channel *chn,
+    int (*cb)(struct iio_channel *chn, const char *attr, const char *value, size_t len, void *d),
+    void *data)
+{
+	unsigned int i, attr_cnt = iio_channel_get_attrs_count(chn);
+	const struct iio_attr *attr;
+	char local_value[8192];
+	int ret;
+
+	for (i = 0; i < attr_cnt; ++i) {
+		attr = iio_channel_get_attr(chn, i);
+		ret = iio_attr_read_raw(attr, local_value, ARRAY_SIZE(local_value));
+		if (ret < 0) {
+			fprintf(stderr, "Failed to read attribute: %s\n", iio_attr_get_name(attr));
+			continue;
+		} else {
+			cb(chn, iio_attr_get_name(attr), local_value, strlen(local_value), data);
+		}
+	}
+}

iio_utils.h

@@ -52,5 +52,8 @@ inline int chn_attr_write_longlong(struct iio_channel *chn, const char *attr_nam
 inline void dev_attr_read_all(struct iio_device *dev,
     int (*cb)(struct iio_device *dev, const char *attr, const char *value, size_t len, void *d),
     void *data);
+inline void chn_attr_read_all(struct iio_channel *chn,
+    int (*cb)(struct iio_channel *chn, const char *attr, const char *value, size_t len, void *d),
+    void *data);
 
 #endif  /* __IIO_UTILS__ */

iio_widget.c

@@ -696,12 +696,11 @@ void iio_update_widgets_of_device(struct iio_widget *widgets,
 		.nb = num_widgets,
 	};
 
-	// !!!!!!!!
 	dev_attr_read_all(dev, __cb_dev_update, &params);
 
-//	for (i = 0; i < iio_device_get_channels_count(dev); i++)
-//		iio_channel_attr_read_all(iio_device_get_channel(dev, i),
-//				__cb_chn_update, &params);
+	for (i = 0; i < iio_device_get_channels_count(dev); i++)
+		chn_attr_read_all(iio_device_get_channel(dev, i),
+				__cb_chn_update, &params);
 }
 
 void iio_save_widgets(struct iio_widget *widgets, unsigned int num_widgets)