How this block appears in a Simulink model?
What can be configured?
Configuration Parameter |
Selectable Option/Value |
Description |
File path to the file contains file info in the SD card |
|
The file sync is based on the filepath+hash info file. This filepath+hash info file for the folder which is in the SD card should be in the SD card. Specify the file path of that file. e.g. filepath_hash_info1.csv |
File path to the file contains file info in the server |
|
Specify the file name of filepath+hash info in the MQTT client (server) which you need to sync the files from. e.g. filepath_hash_info2.csv |
Get data from inputs |
Check--Uncheck |
Check to get above data from input ports |
MQTT topic for file status |
|
Specify the topic to send and receive file status. This is used to handle the file sync process between the ESP32 and the server |
MQTT topic for file data |
|
Specify the topic to receive file content |
Get data from inputs |
Check--Uncheck |
Check to get above MQTT topic from input ports |
Enable firmware update |
Check--Uncheck |
This will enable the firmware update from the SD card |
Firmware bin folder path |
|
Specify the bin file location in the SD card. If this is enabled, this will update the firmware using bin file if that specific file is updated through the file sync process. |
Sample time |
|
Specify the sample time |
OUTPUT Port
Port Name |
Port Type |
Date Type |
Description |
Status |
Scalar |
int32 |
|
When to use this block?
This block is used to transfer file do the file synchronization (one way) in ESP32 using MQTT protocol. For this a MQTT broker and another MQTT client should be required to initiate the file sync process.
How does this block work?
This block requires WiFi setup Block and the MQTT setup block to function. The sync process should be initiated from the MQTT client side not from ESP32 side. After it is initiated, ESP32 will start with downloading the filepath+hash info file from the MQTT client and compare with the filepath+hash info file in SD card. According to it, the ESP32 will request files, delete files in the SD card.
Sample python script for MQTT client which is used to sync the files from: filesyncpy_client.zip
Python script file for generating filepath+hash info file: path_hash_file_gen.zip
