diff options
Diffstat (limited to 'peripherals/pio/pio_keypad.c')
| -rw-r--r-- | peripherals/pio/pio_keypad.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/peripherals/pio/pio_keypad.c b/peripherals/pio/pio_keypad.c new file mode 100644 index 0000000..e617289 --- /dev/null +++ b/peripherals/pio/pio_keypad.c @@ -0,0 +1,147 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+
+#include <board.h>
+#include "pio.h"
+#include "pio_keypad.h"
+
+
+//------------------------------------------------------------------------------
+// Global Functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Configures keypad controller
+/// \param pPIO Pointer to a PIO instance
+/// \param config Configuration data for given pin,see head file for detail
+//------------------------------------------------------------------------------
+void PIO_KeyPadConfig(AT91S_PIO *pPIO, KeyPadConfig *config)
+{
+ //enable/disable keypad controller
+ pPIO->PIO_KER = config->enable;
+
+ //if enable, set keypad matrix and debouncing
+ if(config->enable == TRUE) {
+ //set key matrix
+ pPIO->PIO_KRCR = (config->row | config->col<<8) ;
+
+ //set debouncing
+ pPIO->PIO_KDR = config->debouncing;
+
+ }
+}
+
+
+//------------------------------------------------------------------------------
+/// Get Key Press/Release status
+/// \param pPIO Pointer to a PIO instance
+/// \param event Pointer to a instance of KeyEvent for storing keypad status
+//------------------------------------------------------------------------------
+void PIO_GetKeyStatus(AT91S_PIO *pPIO, KeyEvent *event)
+{
+ int i,j;
+
+ //get key press event
+ event->kdEvent.press = (pPIO->KSR&0x1)?TRUE:FALSE;
+ event->kdEvent.keyPressNum = (pPIO->KSR>>8)&0x3;
+ j=event->kdEvent.keyPressNum+1;
+ for(i=0; i<j; i++) {
+ event->kdEvent.preKeyMatrix[i].row = ((pPIO->KKPR) >> (8*i)) & 0x7;
+ event->kdEvent.preKeyMatrix[i].col = ((pPIO->KKPR) >> (8*i+4)) & 0x7;
+ }
+
+ //get key release event
+ event->kuEvent.release = ((pPIO->KSR>>1) & 0x1)?TRUE:FALSE;
+ event->kuEvent.keyRelNum = (pPIO->KSR>>16)&0x3;
+ j=event->kdEvent.keyPressNum+1;
+ for(i=0;i<j;i++) {
+ event->kuEvent.relKeyMatrix[i].row = ((pPIO->KKRR) >> (8*i)) & 0x7;
+ event->kuEvent.relKeyMatrix[i].col = ((pPIO->KKRR) >> (8*i+4)) & 0x7;
+ }
+
+}
+
+
+//------------------------------------------------------------------------------
+/// Enable keypad interrupt as Key Press Interrupt or Key Release Interrupt or both
+/// \param pPIO Pointer to a PIO instance
+/// \param mode Select key interrupt mode to enable,
+/// 0x1 Key Press Interrupt
+/// 0x2 Key Release Interrupt
+/// 0x3 both of two type
+//------------------------------------------------------------------------------
+void PIO_KeypadEnableIt(AT91S_PIO *pPIO, unsigned int mode)
+{
+ switch(mode){
+ case 1:PIO_KeyPadEnableKPIt(pPIO);
+ break;
+
+ case 2:PIO_KeyPadEnableKRIt(pPIO);
+ break;
+
+ case 3:PIO_KeyPadEnableKPIt(pPIO);
+ PIO_KeyPadEnableKRIt(pPIO);
+ break;
+
+ default:break;
+ }
+
+}
+
+//------------------------------------------------------------------------------
+/// Disable Key Press Interrupt or Key Release Interrupt or both of them
+/// \param pPIO Pointer to a PIO instance
+/// \param mode Select key interrupt mode to disable,
+/// 0x1 Key Press Interrupt
+/// 0x2 Key Release Interrupt
+/// 0x3 both of two type
+//------------------------------------------------------------------------------
+void PIO_KeypadDisableIt(AT91S_PIO *pPIO, unsigned int mode)
+{
+ switch(mode){
+ case 1:PIO_KeyPadDisableKPIt(pPIO);
+ break;
+
+ case 2:PIO_KeyPadDisableKRIt(pPIO);
+ break;
+
+ case 3:PIO_KeyPadDisableKPIt(pPIO);
+ PIO_KeyPadDisableKRIt(pPIO);
+ break;
+
+ default:break;
+ }
+
+}
+
+
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