Difference between revisions of "LPC1768: External Interrupts"
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{| class="table table-striped table-hover table-condensed table-bordered" | {| class="table table-striped table-hover table-condensed table-bordered" | ||
|-class="info" | |-class="info" | ||
| − | !Port Pin | + | !Port Pin|| PINSEL_FUNC_0 || PINSEL_FUNC_1 ||PINSEL_FUNC_2 ||PINSEL_FUNC_3 |
|- | |- | ||
| − | |P2.10 | + | |P2.10 || GPIO || <b>EINT0</b> || NMI || |
|- | |- | ||
| − | |P2.11 | + | |P2.11 || GPIO || <b>EINT1</b> || I2STX_CLK || |
|- | |- | ||
| − | |P2_12 | + | |P2_12 || GPIO || <b>EINT2</b> || I2STX_WS || |
|- | |- | ||
| − | |P2.13 | + | |P2.13 || GPIO || <b>EINT3</b> || I2STX_SDA || |
|} | |} | ||
<br><br><br><br> | <br><br><br><br> | ||
Revision as of 19:39, 13 April 2016
Objective:
In this tutorial we will discuss how to configure and use the LPC1768 external interrupts(EINT0-EINT3).
At the end of tutorial we will see how to use the exploreembedded external interrupt library.
EINTx Pins
LPC1768 has four external interrupts EINT0-EINT3.
As LPC1768 pins are multi functional, these four interrupts are available on multiple pins.
Below table shows mapping of EINTx pins.
| Port Pin | PINSEL_FUNC_0 | PINSEL_FUNC_1 | PINSEL_FUNC_2 | PINSEL_FUNC_3 |
|---|---|---|---|---|
| P2.10 | GPIO | EINT0 | NMI | |
| P2.11 | GPIO | EINT1 | I2STX_CLK | |
| P2_12 | GPIO | EINT2 | I2STX_WS | |
| P2.13 | GPIO | EINT3 | I2STX_SDA |