66 lines
1.3 KiB
Markdown
66 lines
1.3 KiB
Markdown
# messenger
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Use the radio to create an app that sends "YO" messages.
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## Step 1
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Use [on button pressed](/reference/input/on-button-pressed) to send the number "0" over radio.
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```blocks
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input.onButtonPressed(Button.A, () => {
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radio.sendNumber(0);
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});
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```
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## Step 2
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Use [radio on data packet received](/reference/radio/on-data-packet-received) display "YO" when the number ``0`` is received
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by radio.
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```blocks
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let message = 0;
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radio.onDataPacketReceived(({ receivedNumber }) => {
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message = receivedNumber;
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if (message == 0) {
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basic.showString("YO")
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}
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})
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```
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Download the program and **upload the same .hex file to 2 devices!**
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## Step 3
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Use [on button pressed](/reference/input/on-button-pressed) to send the number "1" over radio.
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```blocks
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input.onButtonPressed(Button.B, () => {
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radio.sendNumber(1);
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});
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```
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## Step 4
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Add blocks in [radio on data packet received](/reference/radio/on-data-packet-received) to display "BYE" when the number ``1`` is received
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by radio.
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```blocks
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let message = 0;
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radio.onDataPacketReceived(({ receivedNumber }) => {
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message = receivedNumber;
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if (message == 0) {
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basic.showString("YO")
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}
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if (message == 1) {
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basic.showString("BYE")
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}
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})
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```
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```package
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radio
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```
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