gpio.h

00001 /****************************************************************************
00002  *    Copyright 2010 Andy Kirkham, Stellar Technologies Ltd
00003  *    
00004  *    This file is part of the Satellite Observers Workbench (SOWB).
00005  *
00006  *    SOWB is free software: you can redistribute it and/or modify
00007  *    it under the terms of the GNU General Public License as published by
00008  *    the Free Software Foundation, either version 3 of the License, or
00009  *    (at your option) any later version.
00010  *
00011  *    SOWB is distributed in the hope that it will be useful,
00012  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *    GNU General Public License for more details.
00015  *
00016  *    You should have received a copy of the GNU General Public License
00017  *    along with SOWB.  If not, see <http://www.gnu.org/licenses/>.
00018  *
00019  *    $Id: main.cpp 5 2010-07-12 20:51:11Z ajk $
00020  *    
00021  ***************************************************************************/
00022  
00023 #ifndef GPIO_H
00024 #define GPIO_H
00025 
00026 /* Switch on our macros to use the 4 LEDs on the Mbed. */
00027 #define MBED_LEDS
00028  
00029 /* Used by the MAX7456 module. 
00030    The MAX7456 !cs signal is connected to Mbed pin 8
00031    which is internally connected to Port0.6 */
00032 #define SET_P0_06       (LPC_GPIO0->FIOSET = (1UL << 6))
00033 #define CLR_P0_06       (LPC_GPIO0->FIOCLR = (1UL << 6))
00034 #define VAL_P0_06       (LPC_GPIO0->FIOPIN & (1UL << 6))
00035 #define MAX7456_CS_ASSERT      CLR_P0_06
00036 #define MAX7456_CS_DEASSERT    SET_P0_06
00037 #define MAX7456_CS_VALUE       VAL_P0_06
00038 #define MAX7456_CS_TOGGLE      MAX7456_CS_VALUE ? MAX7456_CS_DEASSERT : MAX7456_CS_ASSERT
00039 
00040 /* Used by the MAX7456 module. 
00041    The MAX7456 !rst signal is connected to Mbed pin 20
00042    which is internally connected to Port1.31 */
00043 #define SET_P1_31      (LPC_GPIO1->FIOSET = (1UL << 31))
00044 #define CLR_P1_31      (LPC_GPIO1->FIOCLR = (1UL << 31))
00045 #define VAL_P1_31      (LPC_GPIO1->FIOPIN & (1UL << 31))
00046 #define MAX7456_RST_ASSERT     CLR_P1_31
00047 #define MAX7456_RST_DEASSERT   SET_P1_31
00048 #define MAX7456_RST_VALUE      VAL_P1_31
00049 #define MAX7456_RST_TOGGLE     MAX7456_RST_VALUE ? MAX7456_RST_DEASSERT : MAX7456_RST_ASSERT
00050 #define SSP0_CS_ASSERT         CLR_P1_31
00051 #define SSP0_CS_DEASSERT       SET_P1_31
00052 #define SSP0_CS_VALUE          VAL_P1_31
00053 #define SSP0_CS_TOGGLE         MAX7456_RST_VALUE ? MAX7456_RST_DEASSERT : MAX7456_RST_ASSERT
00054 
00055 /* Used by the flash module. 
00056    The flash !cs signal is connected to Mbed pin 14
00057    which is internally connected to Port0.16 */
00058 #define SET_P0_16      (LPC_GPIO0->FIOSET = (1UL << 16))
00059 #define CLR_P0_16      (LPC_GPIO0->FIOCLR = (1UL << 16))
00060 #define VAL_P0_16      (LPC_GPIO0->FIOPIN & (1UL << 16))
00061 #define FLASH_CS_ASSERT         CLR_P0_16
00062 #define FLASH_CS_DEASSERT       SET_P0_16
00063 #define FLASH_CS_VALUE          VAL_P0_16
00064 #define FLASH_CS_TOGGLE         FLASH_CS_VALUE ? FLASH_CS_DEASSERT : FLASH_CS_ASSERT
00065 
00066 /* Used by the 25AA02E48 module. 
00067    The device !cs signal is connected to Mbed pin 16
00068    which is internally connected to Port0.24 */
00069 #define SET_P0_24      (LPC_GPIO0->FIOSET = (1UL << 24))
00070 #define CLR_P0_24      (LPC_GPIO0->FIOCLR = (1UL << 24))
00071 #define VAL_P0_24      (LPC_GPIO0->FIOPIN & (1UL << 24))
00072 #define AA02E48_CS_ASSERT       CLR_P0_24
00073 #define AA02E48_CS_DEASSERT     SET_P0_24
00074 #define AA02E48_CS_VALUE        VAL_P0_24
00075 #define AA02E48_CS_TOGGLE       AA02E48_CS_VALUE ? AA02E48_CS_DEASSERT : AA02E48_CS_ASSERT
00076 
00077 /* Used by the SD card. 
00078    The device !cs signal is connected to Mbed pin 19
00079    which is internally connected to Port1.30 */
00080 #define SET_P1_30      (LPC_GPIO1->FIOSET = (1UL << 30))
00081 #define CLR_P1_30      (LPC_GPIO1->FIOCLR = (1UL << 30))
00082 #define VAL_P1_30      (LPC_GPIO1->FIOPIN & (1UL << 30))
00083 #define SDCARD_CS_ASSERT       CLR_P1_30
00084 #define SDCARD_CS_DEASSERT     SET_P1_30
00085 #define SDCARD_CS_VALUE        VAL_P1_30
00086 #define SDCARD_CS_TOGGLE       SDCARD_CS_VALUE ? SDCARD_CS_DEASSERT : SDCARD_CS_ASSERT
00087 
00088 /* Used for reading the SD Card detect pin. */
00089 #define SDCARD_DETECT   (LPC_GPIO0->FIOPIN & (1UL << 25))       
00090 
00091 /* For debugging. 
00092    Mbed pin 21 which is internally connected to Port2.5 */
00093 #define SET_P2_05      (LPC_GPIO2->FIOSET = (1UL << 5))
00094 #define CLR_P2_05      (LPC_GPIO2->FIOCLR = (1UL << 5))
00095 #define VAL_P2_05      (LPC_GPIO2->FIOPIN & (1UL << 5))
00096 #define P21_ASSERT     SET_P2_05
00097 #define P21_DEASSERT   CLR_P2_05
00098 #define P21_VALUE      VAL_P2_05
00099 #define P21_TOGGLE     P21_VALUE ? P21_DEASSERT : P21_ASSERT
00100 
00101 /* For debugging. 
00102    Mbed pin 22 which is internally connected to Port2.4 */
00103 #define SET_P2_04      (LPC_GPIO2->FIOSET = (1UL << 4))
00104 #define CLR_P2_04      (LPC_GPIO2->FIOCLR = (1UL << 4))
00105 #define VAL_P2_04      (LPC_GPIO2->FIOPIN & (1UL << 4))
00106 #define P22_ASSERT     SET_P2_04
00107 #define P22_DEASSERT   CLR_P2_04
00108 #define P22_VALUE      VAL_P2_04
00109 #define P22_TOGGLE     P22_VALUE ? P22_DEASSERT : P22_ASSERT
00110 
00111 #ifdef MBED_LEDS
00112 #define LED1_ON        (LPC_GPIO1->FIOSET = (1UL << 18))
00113 #define LED1_OFF       (LPC_GPIO1->FIOCLR = (1UL << 18))
00114 #define LED1_IS_ON     (LPC_GPIO1->FIOPIN & (1UL << 18))
00115 #define LED1_TOGGLE    LED1_IS_ON ? LED1_OFF : LED1_ON
00116 #define LED2_ON        (LPC_GPIO1->FIOSET = (1UL << 20))
00117 #define LED2_OFF       (LPC_GPIO1->FIOCLR = (1UL << 20))
00118 #define LED2_IS_ON     (LPC_GPIO1->FIOPIN & (1UL << 20))
00119 #define LED2_TOGGLE    LED2_IS_ON ? LED2_OFF : LED2_ON
00120 #define LED3_ON        (LPC_GPIO1->FIOSET = (1UL << 21))
00121 #define LED3_OFF       (LPC_GPIO1->FIOCLR = (1UL << 21))
00122 #define LED3_IS_ON     (LPC_GPIO1->FIOPIN & (1UL << 21))
00123 #define LED3_TOGGLE    LED3_IS_ON ? LED3_OFF : LED3_ON
00124 #define LED4_ON        (LPC_GPIO1->FIOSET = (1UL << 23))
00125 #define LED4_OFF       (LPC_GPIO1->FIOCLR = (1UL << 23))
00126 #define LED4_IS_ON     (LPC_GPIO1->FIOPIN & (1UL << 23))
00127 #define LED4_TOGGLE    LED4_IS_ON ? LED4_OFF : LED4_ON
00128 #endif
00129  
00130 /* Function prototypes. */
00131 void gpio_init(void);
00132 void gpio_process(void);
00133  
00134 #endif
00135