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" | ||
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| − | !Port Pin|| PINSEL_FUNC_0 || PINSEL_FUNC_1 ||PINSEL_FUNC_2 ||PINSEL_FUNC_3 | + | !Port Pin||Ext Interrupt || PINSEL_FUNC_0 || PINSEL_FUNC_1 ||PINSEL_FUNC_2 ||PINSEL_FUNC_3 |
|- | |- | ||
| − | |P2.10 || GPIO || <b>TXD0</b> || ADC0[7] || | + | |P2.10 || EINT0 || GPIO || <b>TXD0</b> || ADC0[7] || |
|- | |- | ||
| − | |P2.11 || GPIO || <b>RXD0</b> || ADC0[6] || | + | |P2.11 || EINT1 || GPIO || <b>RXD0</b> || ADC0[6] || |
|- | |- | ||
| − | |P2_12 | GPIO || PWM1[1] || <b>TXD1</b> || | + | |P2_12 || EINT2 || GPIO || PWM1[1] || <b>TXD1</b> || |
|- | |- | ||
| − | |P2.13 || GPIO || PWM1[2] || <b>RXD1</b> || | + | |P2.13 || EINT3 || GPIO || PWM1[2] || <b>RXD1</b> || |
|} | |} | ||
<br><br><br><br> | <br><br><br><br> | ||
Revision as of 19:33, 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 |