EzData is an IoT cloud data storage service provided by M5Stack. Different devices can insert or extract data into the storage queue through the unique token to realize data sharing.
Click refresh to get token...
Precautions:
1. All the following operations depend on the unique token
, which is fixed in the same browser environment. Please copy the token before use.
2. If no data operation is performed within half a year, the data queue corresponding to the token will be cleared.
3. The data will be sorted in descending order according to the inserted time (the last inserted data is at the top of the list), and the data will be accumulated and saved.
setData(const char *token, const char *topic, int val)
getData(const char *token, const char *topic, int& result)
addToList(const char *token, const char *list, int val)
getData(const char *token, const char *list, int *Array, int offset, int count)
removeData(const char *token, const char *field)
The program in this case uses the M5Core device, and the relevant dependency libraries M5Stack and M5_EzData need to be installed before the program is compiled ,And fill in the token and wifi information into the code.
#include "M5Stack.h"
#include "M5_EzData.h"
// Configure the name and password of the connected wifi and your token.
const char* ssid = "Explore-F";
const char* password = "xingchentansuo123";
const char* token = "";
void setup() {
M5.begin(); //Initialize M5Stack
M5.Power.begin();
if(setupWifi(ssid,password)){ //Connect to wifi.
M5.Lcd.printf("Success connecting to %s\n",ssid);
}else{
M5.Lcd.printf("Connecting to %s failed\n",ssid);
}
}
void loop() {
//Save the data 20 to the top of the testData topic queue.
if(setData(token,"testData",20)){
M5.Lcd.printf("Success sending data to the topic\n");
}else{
M5.Lcd.print("Fail to save data\n");
}
delay(5000);
//Save 3 data in sequence to the first place of testList.
for(int i=0;i<3;i++){
if(addToList(token,"testList",i)){
M5.Lcd.printf("Success sending %d to the list\n",i);
}else{
M5.Lcd.print("Fail to save data\n");
}
delay(100);
}
delay(5000);
//Get a piece of data from a topic and store the value in result.
int result=0;
if(getData(token,"testData",result)){
M5.Lcd.printf("Success get data %d\n",result);
}else{
M5.Lcd.print("Fail to get data\n");
}
delay(5000);
//Get a set of data from a list and store the values in the Array array.
int Array[3]={};
if(getData(token,"testList",Array,0,3)){
M5.Lcd.print("Success get list\n");
for(int i=0;i<3;i++){
M5.Lcd.printf("Array[%d]=%d,",i,Array[i]);
}
M5.Lcd.println("");
}else{
M5.Lcd.println("Fail to get data");
}
delay(5000);
//Remove data
if(removeData(token,"testData"))
M5.Lcd.printf("Success remove data\n");
else
M5.Lcd.println("Fail to remove data");
if(removeData(token,"testList"))
M5.Lcd.printf("Success remove data from the list\n");
else
M5.Lcd.println("Fail to remove data");
delay(5000);
M5.Lcd.fillScreen(BLACK);
M5.Lcd.setCursor(0,0);
}