Diff: sensirion/sensirion_common.c

Revision:

0:c8ecd653066c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sensirion/sensirion_common.c	Mon Aug 16 13:00:07 2021 +0000
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2018, Sensirion AG
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Sensirion AG nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "sensirion_common.h"
+#include "sensirion_config.h"
+
+uint16_t sensirion_common_bytes_to_uint16_t(const uint8_t* bytes) {
+    return (uint16_t)bytes[0] << 8 | (uint16_t)bytes[1];
+}
+
+uint32_t sensirion_common_bytes_to_uint32_t(const uint8_t* bytes) {
+    return (uint32_t)bytes[0] << 24 | (uint32_t)bytes[1] << 16 |
+           (uint32_t)bytes[2] << 8 | (uint32_t)bytes[3];
+}
+
+int16_t sensirion_common_bytes_to_int16_t(const uint8_t* bytes) {
+    return (int16_t)sensirion_common_bytes_to_uint16_t(bytes);
+}
+
+int32_t sensirion_common_bytes_to_int32_t(const uint8_t* bytes) {
+    return (int32_t)sensirion_common_bytes_to_uint32_t(bytes);
+}
+
+float sensirion_common_bytes_to_float(const uint8_t* bytes) {
+    union {
+        uint32_t u32_value;
+        float float32;
+    } tmp;
+
+    tmp.u32_value = sensirion_common_bytes_to_uint32_t(bytes);
+    return tmp.float32;
+}
+
+void sensirion_common_uint32_t_to_bytes(const uint32_t value, uint8_t* bytes) {
+    bytes[0] = value >> 24;
+    bytes[1] = value >> 16;
+    bytes[2] = value >> 8;
+    bytes[3] = value;
+}
+
+void sensirion_common_uint16_t_to_bytes(const uint16_t value, uint8_t* bytes) {
+    bytes[0] = value >> 8;
+    bytes[1] = value;
+}
+
+void sensirion_common_int32_t_to_bytes(const int32_t value, uint8_t* bytes) {
+    bytes[0] = value >> 24;
+    bytes[1] = value >> 16;
+    bytes[2] = value >> 8;
+    bytes[3] = value;
+}
+
+void sensirion_common_int16_t_to_bytes(const int16_t value, uint8_t* bytes) {
+    bytes[0] = value >> 8;
+    bytes[1] = value;
+}
+
+void sensirion_common_float_to_bytes(const float value, uint8_t* bytes) {
+    union {
+        uint32_t u32_value;
+        float float32;
+    } tmp;
+    tmp.float32 = value;
+    sensirion_common_uint32_t_to_bytes(tmp.u32_value, bytes);
+}
+
+void sensirion_common_copy_bytes(const uint8_t* source, uint8_t* destination,
+                                 uint16_t data_length) {
+    uint16_t i;
+    for (i = 0; i < data_length; i++) {
+        destination[i] = source[i];
+    }
+}
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