Lines Matching +full:0 +full:x00 +full:- +full:positive

4  * SPDX-License-Identifier: Apache-2.0
34  * @version 0.8.0
64  * @brief	Callback API to clear retained memory area (reset all data to 0x00).
74  * non-initialised RAM region, or in specific registers, but is not reset when a different
76  * byte-level reading and writing without a need to erase data before writing.
92  * @retval		Positive value indicating size in bytes on success, else negative errno
99 	struct retained_mem_driver_api *api = (struct retained_mem_driver_api *)dev->api;  in z_impl_retained_mem_size()
101 	return api->size(dev);  in z_impl_retained_mem_size()
112  * @retval		0 on success else negative errno code.
120 	struct retained_mem_driver_api *api = (struct retained_mem_driver_api *)dev->api;  in z_impl_retained_mem_read()
123 	/* Validate user-supplied parameters */  in z_impl_retained_mem_read()
124 	if (size == 0) {  in z_impl_retained_mem_read()
125 		return 0;  in z_impl_retained_mem_read()
128 	area_size = api->size(dev);  in z_impl_retained_mem_read()
130 	if (offset < 0 || size > area_size || (area_size - size) < (size_t)offset) {  in z_impl_retained_mem_read()
131 		return -EINVAL;  in z_impl_retained_mem_read()
134 	return api->read(dev, offset, buffer, size);  in z_impl_retained_mem_read()
138  * @brief		Writes data to the Retained memory area - underlying data does not need to
146  * @retval		0 on success else negative errno code.
154 	struct retained_mem_driver_api *api = (struct retained_mem_driver_api *)dev->api;  in z_impl_retained_mem_write()
157 	/* Validate user-supplied parameters */  in z_impl_retained_mem_write()
158 	if (size == 0) {  in z_impl_retained_mem_write()
159 		return 0;  in z_impl_retained_mem_write()
162 	area_size = api->size(dev);  in z_impl_retained_mem_write()
164 	if (offset < 0 || size > area_size || (area_size - size) < (size_t)offset) {  in z_impl_retained_mem_write()
165 		return -EINVAL;  in z_impl_retained_mem_write()
168 	return api->write(dev, offset, buffer, size);  in z_impl_retained_mem_write()
172  * @brief		Clears data in the retained memory area by setting it to 0x00.
176  * @retval		0 on success else negative errno code.
182 	struct retained_mem_driver_api *api = (struct retained_mem_driver_api *)dev->api;  in z_impl_retained_mem_clear()
184 	return api->clear(dev);  in z_impl_retained_mem_clear()