Commit 7b5209e

authored

Merge pull request #1315 from arduino/karlsoderby/minima-rx-tx-lds

[UNO R4] TX/RX LEDs docs

2 parents 9d17fa4 + fb8ac69 commit 7b5209eCopy full SHA for 7b5209e

File tree

+33

-0

lines changed

content/hardware/02.hero/boards/uno-r4-minima/tutorials/cheat-sheet
- cheat-sheet.md

+33

-0

lines changed

Lines changed: 33 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -188,6 +188,39 @@ In addition, analog pins A0-A5 can also be used as digital pins. Note that **A4/`
`188`	`188`
`189`	`189`	`The reference voltage of all digital pins is 5 V.`
`190`	`190`
	`191`	`+## LED`
	`192`	`+`
	`193`	`+The UNO R4 Minima has a total of four LEDs, three of which are programmable:`
	`194`	`+- ON - power LED, cannot be programmed.`
	`195`	+- `LED_BUILTIN` - classic "built-in LED", attached to pin 13.
	`196`	+- `RX_LED` - LED labelled "RX" on the board.
	`197`	+- `TX_LED` - LED labelled "TX" on the board.
	`198`	`+`
	`199`	`+To control these, define them as outputs and write desired state. The below example blinks each LED every second.`
	`200`	`+`
	`201`	+```arduino
	`202`	`+void setup(){`
	`203`	`+ //define pins as output`
	`204`	`+ pinMode(LED_BUILTIN, OUTPUT);`
	`205`	`+ pinMode(RX_LED, OUTPUT);`
	`206`	`+ pinMode(TX_LED, OUTPUT);`
	`207`	`+}`
	`208`	`+`
	`209`	`+void loop(){`
	`210`	`+ //turn on all LEDs`
	`211`	`+ digitalWrite(LED_BUILTIN, HIGH);`
	`212`	`+ digitalWrite(LED_RX, HIGH);`
	`213`	`+ digitalWrite(LED_TX, HIGH);`
	`214`	`+ delay(1000);`
	`215`	`+`
	`216`	`+ //turn off all LEDs`
	`217`	`+ digitalWrite(LED_BUILTIN, LOW);`
	`218`	`+ digitalWrite(LED_RX, LOW);`
	`219`	`+ digitalWrite(LED_TX, LOW);`
	`220`	`+ delay(1000);`
	`221`	`+}`
	`222`	+```
	`223`	`+`
`191`	`224`	`## DAC`
`192`	`225`
`193`	`226`	`![DAC Pin](assets/dacpin.png)`

Comments

(0)