Difference between revisions of "LPC1768: External Interrupts"
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=EINTx Pins= | =EINTx Pins= | ||
| − | LPC1768 has four external interrupts EINT0-EINT3. | + | LPC1768 has four external interrupts EINT0-EINT3.<br> |
| − | As LPC1768 pins are multi functional, these four interrupts are available on multiple pins. | + | As LPC1768 pins are multi functional, these four interrupts are available on multiple pins.<br> |
Below table shows mapping of EINTx pins. | Below table shows mapping of EINTx pins. | ||
{| class="table table-striped table-hover table-condensed table-bordered" | {| class="table table-striped table-hover table-condensed table-bordered" | ||
Revision as of 19:35, 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 | Ext Interrupt | PINSEL_FUNC_0 | PINSEL_FUNC_1 | PINSEL_FUNC_2 | PINSEL_FUNC_3 |
|---|---|---|---|---|---|
| P2.10 | EINT0 | GPIO | TXD0 | ADC0[7] | |
| P2.11 | EINT1 | GPIO | RXD0 | ADC0[6] | |
| P2_12 | EINT2 | GPIO | PWM1[1] | TXD1 | |
| P2.13 | EINT3 | GPIO | PWM1[2] | RXD1 |