Diferencia entre revisiones de «PCINT»
De ArduWiki
(→Vea tambien) |
(→Referencias externas) |
||
Línea 125: | Línea 125: | ||
== Referencias externas == | == Referencias externas == | ||
− | * [https://www.luisllamas.es/interrupciones-en-todos-los-pines-de-arduino-con-pcint/] - Luis Llamas | + | * [https://www.luisllamas.es/interrupciones-en-todos-los-pines-de-arduino-con-pcint/ PCINT] - Luis Llamas |
Revisión actual del 23:03 23 sep 2019
Contenido
Descripcion
Existen dos tipos de interrupciones externas:
- INT, interrupciones de harware externo
- PCINT, interrupciones Pin Change, que actual a nivel de bancos completos.
Sintaxis
PCICR; PCMSK0; PCIFR; ISP(PCINT0_vect) //D8 a D13 ISP(PCINT1_vect) //A0 a A5 ISP(PCINT2_vect) //D0 a D7
Puertos INT
Pin | Port | INT |
---|---|---|
2 | PD2 | INT0 |
3 | PD3 | INT2 |
Pin | Port | INT |
---|---|---|
6 | PE4 | INT4 |
7 | PE5 | INT5 |
43 | PD0 | INT0 |
44 | PD1 | INT1 |
45 | PD3 | INT2 |
46 | PD6 | INT3 |
Puertos PCINT
Pin | Port | PCINT | Pin | Port | PCINT | Pin | Port | PCINT |
---|---|---|---|---|---|---|---|---|
2 | PD2 | PCINT18 | 8 | PB0 | PCINT0 | A0 | PC0 | PCINT8 |
3 | PD3 | PCINT19 | 9 | PB1 | PCINT1 | A1 | PC1 | PCINT9 |
4 | PD4 | PCINT20 | 10 | PB2 | PCINT2 | A2 | PC2 | PCINT10 |
5 | PD5 | PCINT21 | 11 | PB3 | PCINT3 | A3 | PC3 | PCINT11 |
6 | PD6 | PCINT22 | 12 | PB4 | PCINT4 | A4 | PC4 | PCINT12 |
7 | PD7 | PCINT23 | 13 | PB5 | PCINT5 | A5 | PC5 | PCINT13 |
Pin | Port | PCINT | Pin | Port | PCINT | Pin | Port | PCINT |
---|---|---|---|---|---|---|---|---|
10 | PB4 | PCINT4 | SS | PCINT0 | PB0 | A8 | PK0 | PCINT16 |
11 | PD7 | PCINT5 | SCK | PCINT1 | PB1 | A9 | PK1 | PCINT17 |
12 | PD7 | PCINT6 | MOSI | PCINT2 | PB2 | A10 | PK2 | PCINT18 |
13 | PD7 | PCINT7 | MISO | PCINT3 | PB3 | A11 | PK3 | PCINT19 |
14 | PD7 | PCINT10 | - | - | - | A12 | PK4 | PCINT20 |
15 | PD7 | PCINT9 | - | - | - | A13 | PK5 | PCINT21 |
- | - | - | - | - | - | A14 | PK6 | PCINT22 |
- | - | - | - | - | - | A15 | PK7 | PCINT23 |
Advertencias
Ejemplo
// Activar PCINT en un PIN
void pciSetup(byte pin){
*digitalPinToPCMSK(pin) |= bit (digitalPinToPCMSKbit(pin)); //activar pin en PCMSK
PCIFR |= bit (digitalPinToPCICRbit(pin)); //limpiar flag de la interrupcion en PCIFR
PCICR |= bit (digitalPinToPCICRbit(pin)); //activar interrupcion para el grupo en PCICR
}
// Definir ISR para cada puerto
ISR(PCINT0_vect) {
//gestionar para PCINT para D8 a D13
}
ISR(PCINT1_vect){
//gestionar PCINT para A0 a A5
}
ISR(PCINT2_vect){
//gestionar PCINT para D0 a D7
}
void setup(){
//Activar las PCINT para distintos pins
pciSetup(7);
pciSetup(8);
pciSetup(9);
pciSetup(A0);
}
void loop(){
//Nada
}
Vea tambien
Referencias externas
- PCINT - Luis Llamas