| /* |
| Copyright (c) 2011 Arduino. All right reserved. |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| See the GNU Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "Arduino.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| extern void pinMode( uint32_t ulPin, uint32_t ulMode ) |
| { |
| if ( g_APinDescription[ulPin].ulPinType == PIO_NOT_A_PIN ) |
| { |
| return ; |
| } |
| |
| switch ( ulMode ) |
| { |
| case INPUT: |
| /* Enable peripheral for clocking input */ |
| pmc_enable_periph_clk( g_APinDescription[ulPin].ulPeripheralId ) ; |
| PIO_Configure( g_APinDescription[ulPin].pPort, PIO_INPUT, g_APinDescription[ulPin].ulPin, 0 ) ; |
| break ; |
| |
| case OUTPUT: |
| /* if all pins are output, disable PIO Controller clocking, reduce power consomption */ |
| if ( g_APinDescription[ulPin].pPort->PIO_OSR == 0xffffffff ) |
| { |
| pmc_disable_periph_clk( g_APinDescription[ulPin].ulPeripheralId ) ; |
| } |
| PIO_Configure( g_APinDescription[ulPin].pPort, PIO_OUTPUT_1, g_APinDescription[ulPin].ulPin, g_APinDescription[ulPin].ulPinConfiguration ) ; |
| break ; |
| |
| default: |
| break ; |
| } |
| } |
| |
| extern void digitalWrite( uint32_t ulPin, uint32_t ulVal ) |
| { |
| /* Handle */ |
| if ( g_APinDescription[ulPin].ulPinType == PIO_NOT_A_PIN ) |
| { |
| return ; |
| } |
| |
| if ( PIO_GetOutputDataStatus( g_APinDescription[ulPin].pPort, g_APinDescription[ulPin].ulPin ) == 0 ) |
| { |
| PIO_PullUp( g_APinDescription[ulPin].pPort, g_APinDescription[ulPin].ulPin, 1 ) ; |
| } |
| else |
| { |
| PIO_SetOutput( g_APinDescription[ulPin].pPort, g_APinDescription[ulPin].ulPin, ulVal, 0, PIO_PULLUP ) ; |
| } |
| } |
| |
| extern int digitalRead( uint32_t ulPin ) |
| { |
| if ( g_APinDescription[ulPin].ulPinType == PIO_NOT_A_PIN ) |
| { |
| return LOW ; |
| } |
| |
| if ( PIO_Get( g_APinDescription[ulPin].pPort, PIO_INPUT, g_APinDescription[ulPin].ulPin ) == 1 ) |
| { |
| return HIGH ; |
| } |
| |
| return LOW ; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |