Basic
This documentation covers basic programming tasks, including starting a program, pausing execution, and displaying numerical values and text.
Program Starts
On Start
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>visionAnalysisResult</variable><variable>result</variable><variable>photo1</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"/></xml>"}
This is used to execute an event when the program starts.
Parameters: N/A
Output: N/A
Sample code:
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>visionAnalysisResult</variable><variable>result</variable><variable>photo1</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"basic_consoleLogText\"><value name=\"text\"><shadow type=\"text\"><field name=\"TEXT\">abcde</field></shadow></value></block></statement></block></xml>"}

Breaking Off a Few Second
Pause ms
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>visionAnalysisResult</variable><variable>result</variable><variable>photo1</variable></variables><block type=\"basic_sleep\" disabled=\"true\" x=\"23\" y=\"202\"><value name=\"ms\"><shadow type=\"math_number\" disabled=\"true\"><field name=\"NUM\">0</field></shadow></value></block></xml>"}
This block is used to stop some actions.
Parameters: Condition: Number (Default: 0)
Output: N/A
Sample code:
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"basic_consoleLogText\"><value name=\"text\"><shadow type=\"text\"><field name=\"TEXT\">abcde</field></shadow></value><next><block type=\"basic_sleep\"><value name=\"ms\"><shadow type=\"math_number\"><field name=\"NUM\">2000</field></shadow></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><shadow type=\"text\"><field name=\"TEXT\">hi</field></shadow></value></block></next></block></next></block></statement></block></xml>"}
Before 2000ms, the output:

After 2000ms, the output:

Displaying the Numerical Value
Print Number
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"basic_consoleLogNum\" disabled=\"true\" x=\"23\" y=\"292\"><value name=\"num\"><shadow type=\"math_number\" disabled=\"true\"><field name=\"NUM\">0</field></shadow></value></block></xml>"}
This block is used to output number value.
Parameters: Condition: Number (Default: 0)
Output: Number
Sample code:
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"basic_consoleLogNum\"><value name=\"num\"><shadow type=\"math_number\"><field name=\"NUM\">123</field></shadow></value></block></statement></block></xml>"}
The output:

Displaying Text
Print String
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"basic_consoleLogText\" disabled=\"true\" x=\"23\" y=\"337\"><value name=\"text\"><shadow type=\"text\" disabled=\"true\"><field name=\"TEXT\">abcde</field></shadow></value></block></xml>"}
This block is used to output string value.
Parameters: Condition: String (Default: abcde)
Output: String
Sample code:
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"basic_consoleLogText\"><value name=\"text\"><shadow type=\"text\"><field name=\"TEXT\">hello</field></shadow></value></block></statement></block></xml>"}
The output:

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