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portmanipulating.txt
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portmanipulating.txt
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Direct Digital write:
Port A:
REG_PORT_OUTSET0 = PORT_PA20; //write D6 HIGH
REG_PORT_OUTCLR0 = PORT_PA15; //write D5 LOW
REG_PORT_DIRSET0 = PORT_PA15; //sets D5 as OUTPUT
REG_PORT_DIRCLR0 = PORT_PA15; //sets D5 as INPUT
Port B:
REG_PORT_OUTSET1 = PORT_PB08; //write A1 HIGH
REG_PORT_OUTCLR1 = PORT_PB08; //write A1 LOW
Direct Digital read:
if (REG_PORT_IN0 & PORT_PA19) // if (digitalRead(12) == HIGH)
if (!(REG_PORT_IN0 | ~PORT_PA19)) // if (digitalRead(12) == LOW)
Pinmapping for Sam21D
D0 - PORT_PA11
D1 - PORT_PA10
D2 - PORT_PA14
D3 - PORT_PA09
D4 - PORT_PA08
D5 - PORT_PA15
D6 - PORT_PA20
D7 - PORT_PA21
D8 - PORT_PA06
D9 - PORT_PA07
D10 - PORT_PA18
D11 - PORT_PA16
D12 - PORT_PA19
D13 - PORT_PA17
A0 - PORT_PA02
A1 - PORT_PB08
A2 - PORT_PB09
A3 - PORT_PA04
A4 - PORT_PA05
A5 - PORT_PB02
SCK - PORT_PB11
MISO - PORT_PA12
MOSI - PORT_PB10
SCL - PORT_PB23
SDA - PORT_PB22
ATN - PORT_PA13 (Not included on the Zero Pro/M0 Pro)