NEW: sync the code of DJI Payload-SDK version 2.2.1 released on January 20 2021.

Signed-off-by: DJI-Martin <DJI-Martin@dji.com>

doc/psdk_other_docs/psdk_code_style/psdk_template.c

@@ -0,0 +1,90 @@
+/**
+ ******************************************************************************
+  * @file    psdk_template.c
+  * @version V0.0.0
+  * @date    2017/8/10
+ * @brief   This file to indicate PSDK coding style and comment style.
+ *
+ * @copyright (c) 2017-2018 DJI. All rights reserved.
+ *
+ * All information contained herein is, and remains, the property of DJI.
+ * The intellectual and technical concepts contained herein are proprietary
+ * to DJI and may be covered by U.S. and foreign patents, patents in process,
+ * and protected by trade secret or copyright law.  Dissemination of this
+ * information, including but not limited to data and other proprietary
+ * material(s) incorporated within the information, in any form, is strictly
+ * prohibited without the express written consent of DJI.
+ *
+ * If you receive this source code without DJI’s authorization, you may not
+ * further disseminate the information, and you must immediately remove the
+ * source code and notify DJI of its removal. DJI reserves the right to pursue
+ * legal actions against you for any loss(es) or damage(s) caused by your
+ * failure to do so.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "psdk_template.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+
+//Max PSDK data packet size
+#define MAX_PACKAGE_LEN  256
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+
+//A buffer used to store data to be sent
+static uint8_t s_SendBuffer[PSDK_TEMPLATE_MAX_BUFFER_SIZE];
+
+/* Exported variables --------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/**
+ * @brief PSDK low level send function.
+ * @param buffer Pointer to send data buffer.
+ * @param len Size of data to be sent.
+ * @return Size of data to be sent.
+ */
+static int PsdkTemplate_PrivateSend(const uint8_t *buffer, uint16_t len)
+{
+    /* NOTE : This function should be implemented in the user file. */
+    return len;
+}
+
+/* Exported functions --------------------------------------------------------*/
+
+/**
+ * @brief PSDK protocol initialization.
+ * @param None.
+ * @return None.
+ */
+void PsdkTemplate_Init(void)
+{
+    /* NOTE : This function should be implemented in the user file. */
+}
+
+/**
+ * @brief Send data function.
+ * @param buffer : the buffer point send data
+ * @param len : send data length
+ * @return if >= 0, indicate the real send data length; if < 0, indicate the -ErrorCode for send failure reason.
+ */
+int PsdkTemplate_Send(const uint8_t *buffer, uint16_t len)
+{
+    uint16_t realLen;
+
+    if (len > MAX_PACKAGE_LEN) {
+        realLen = MAX_PACKAGE_LEN;
+    } else {
+        realLen = len;
+    }
+
+    PsdkTemplate_PrivateSend(buffer, len);
+    return realLen;
+}
+
+/************************ (C) COPYRIGHT DJI Innovations *******END OF FILE******/