Andy K / Mbed 2 deprecated SOWB

Satellite Observers Workbench. NOT yet complete, just published for forum posters to \"cherry pick\" pieces of code as requiered as an example.

Dependencies:   mbed

gpio/gpio.c@0:0a841b89d614, 2010-10-11 (annotated)

Committer:
AjK
Date:
Mon Oct 11 10:34:55 2010 +0000
Revision:
0:0a841b89d614
Totally Alpha quality as this project isn\t completed. Just publishing it as it answers many questions asked in the forums

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AjK 0:0a841b89d614 1 /****************************************************************************
AjK 0:0a841b89d614 2 * Copyright 2010 Andy Kirkham, Stellar Technologies Ltd
AjK 0:0a841b89d614 3 *
AjK 0:0a841b89d614 4 * This file is part of the Satellite Observers Workbench (SOWB).
AjK 0:0a841b89d614 5 *
AjK 0:0a841b89d614 6 * SOWB is free software: you can redistribute it and/or modify
AjK 0:0a841b89d614 7 * it under the terms of the GNU General Public License as published by
AjK 0:0a841b89d614 8 * the Free Software Foundation, either version 3 of the License, or
AjK 0:0a841b89d614 9 * (at your option) any later version.
AjK 0:0a841b89d614 10 *
AjK 0:0a841b89d614 11 * SOWB is distributed in the hope that it will be useful,
AjK 0:0a841b89d614 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
AjK 0:0a841b89d614 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
AjK 0:0a841b89d614 14 * GNU General Public License for more details.
AjK 0:0a841b89d614 15 *
AjK 0:0a841b89d614 16 * You should have received a copy of the GNU General Public License
AjK 0:0a841b89d614 17 * along with SOWB. If not, see <http://www.gnu.org/licenses/>.
AjK 0:0a841b89d614 18 *
AjK 0:0a841b89d614 19 * $Id: main.cpp 5 2010-07-12 20:51:11Z ajk $
AjK 0:0a841b89d614 20 *
AjK 0:0a841b89d614 21 ***************************************************************************/
AjK 0:0a841b89d614 22
AjK 0:0a841b89d614 23 #include "sowb.h"
AjK 0:0a841b89d614 24 #include "debug.h"
AjK 0:0a841b89d614 25 #include "gpio.h"
AjK 0:0a841b89d614 26
AjK 0:0a841b89d614 27
AjK 0:0a841b89d614 28 /** gpio_init
AjK 0:0a841b89d614 29 */
AjK 0:0a841b89d614 30 void gpio_init(void) {
AjK 0:0a841b89d614 31
AjK 0:0a841b89d614 32 DEBUG_INIT_START;
AjK 0:0a841b89d614 33
AjK 0:0a841b89d614 34 /* The following code could be condensed into a single set of
AjK 0:0a841b89d614 35 and/or statements. However, for code clarity they are laid
AjK 0:0a841b89d614 36 out on a "use case" way to see each pin being defined. Since
AjK 0:0a841b89d614 37 this is "init" code and only called once at start-up, the
AjK 0:0a841b89d614 38 extra overhead isn't worth the effort over cleaner to read
AjK 0:0a841b89d614 39 code. */
AjK 0:0a841b89d614 40
AjK 0:0a841b89d614 41 /* The MAX7456 module uses p0.23 (p15) for it's chip select
AjK 0:0a841b89d614 42 output. Define it's setup here and use the macros in gpio.h
AjK 0:0a841b89d614 43 to assert, deassert or read the pin. */
AjK 0:0a841b89d614 44 //LPC_PINCON->PINSEL1 &= ~(3UL << 14); /* Function GPIO. */
AjK 0:0a841b89d614 45 //LPC_GPIO0->FIODIR |= (1UL << 23); /* P0.23 as output. */
AjK 0:0a841b89d614 46
AjK 0:0a841b89d614 47 /* The MAX7456 module uses p0.16 (p14) for it's chip select
AjK 0:0a841b89d614 48 output. Define it's setup here and use the macros in gpio.h
AjK 0:0a841b89d614 49 to assert, deassert or read the pin. */
AjK 0:0a841b89d614 50 //LPC_PINCON->PINSEL1 &= ~(3UL << 14); /* Function GPIO. */
AjK 0:0a841b89d614 51 //LPC_GPIO0->FIODIR |= (1UL << 16); /* P0.23 as output. */
AjK 0:0a841b89d614 52
AjK 0:0a841b89d614 53 /* The MAX7456 module uses p0.6 (p8) for it's chip select
AjK 0:0a841b89d614 54 output. Define it's setup here and use the macros in gpio.h
AjK 0:0a841b89d614 55 to assert, deassert or read the pin. */
AjK 0:0a841b89d614 56 LPC_PINCON->PINSEL0 &= ~(3UL << 12); /* Function GPIO. */
AjK 0:0a841b89d614 57 LPC_GPIO0->FIODIR |= (1UL << 6); /* P0.6 as output. */
AjK 0:0a841b89d614 58
AjK 0:0a841b89d614 59
AjK 0:0a841b89d614 60 /* The MAX7456 module uses p1.31 (p20) for it's reset output.
AjK 0:0a841b89d614 61 Define it's setup here and use the macros in gpio.h to assert,
AjK 0:0a841b89d614 62 deassert or read the pin. */
AjK 0:0a841b89d614 63 LPC_PINCON->PINSEL3 &= ~(3UL << 30); /* Function GPIO. */
AjK 0:0a841b89d614 64 LPC_GPIO1->FIODIR |= (1UL << 31); /* P1.31 as output. */
AjK 0:0a841b89d614 65
AjK 0:0a841b89d614 66 /* We use p0.25 (p17) for the SD Card detect. */
AjK 0:0a841b89d614 67 LPC_PINCON->PINSEL1 &= ~(3UL << 18); /* Function GPIO. */
AjK 0:0a841b89d614 68 LPC_GPIO0->FIODIR &= ~(1UL << 25); /* P0.25 as Input. */
AjK 0:0a841b89d614 69
AjK 0:0a841b89d614 70 /* We use p0.16 (p14) for the Flash device SSP0 CS signal. */
AjK 0:0a841b89d614 71 LPC_PINCON->PINSEL1 &= ~(3UL << 14); /* Function GPIO. */
AjK 0:0a841b89d614 72 LPC_GPIO0->FIODIR |= (1UL << 16); /* P0.23 as output. */
AjK 0:0a841b89d614 73
AjK 0:0a841b89d614 74 /* We use p0.24 (p16) for the 25AA02E48 device SSP0 CS signal. */
AjK 0:0a841b89d614 75 LPC_PINCON->PINSEL1 &= ~(3UL << 14); /* Function GPIO. */
AjK 0:0a841b89d614 76 LPC_GPIO0->FIODIR |= (1UL << 24); /* P0.24 as output. */
AjK 0:0a841b89d614 77
AjK 0:0a841b89d614 78 /* We use p1.30 (p19) for the MicroSD card device SSP0 CS signal. */
AjK 0:0a841b89d614 79 LPC_PINCON->PINSEL3 &= ~(3UL << 28); /* Function GPIO. */
AjK 0:0a841b89d614 80 LPC_GPIO1->FIODIR |= (1UL << 30); /* P1.30 as output. */
AjK 0:0a841b89d614 81
AjK 0:0a841b89d614 82 /* We use p2.5 (p21) for debugging. */
AjK 0:0a841b89d614 83 LPC_PINCON->PINSEL4 &= ~(3UL << 10); /* Function GPIO. */
AjK 0:0a841b89d614 84 LPC_GPIO2->FIODIR |= (1UL << 5); /* P2.5 as output. */
AjK 0:0a841b89d614 85
AjK 0:0a841b89d614 86 /* We use p2.4 (p22) for debugging. */
AjK 0:0a841b89d614 87 LPC_PINCON->PINSEL4 &= ~(3UL << 8); /* Function GPIO. */
AjK 0:0a841b89d614 88 LPC_GPIO2->FIODIR |= (1UL << 4); /* P2.4 as output. */
AjK 0:0a841b89d614 89
AjK 0:0a841b89d614 90
AjK 0:0a841b89d614 91 #ifdef MBED_LEDS
AjK 0:0a841b89d614 92 /* The MBED has four useful little blue LEDs that can be used.
AjK 0:0a841b89d614 93 Mbed examples use the DigitalOut led1(LED1) style. Mimic that
AjK 0:0a841b89d614 94 using our system here. Here however, I will use shorthand ;)
AjK 0:0a841b89d614 95 LED1 LED2 LED3 LED4 */
AjK 0:0a841b89d614 96 LPC_PINCON->PINSEL3 &= ( ~(3UL << 4) & ~(3UL << 8) & ~(3UL << 10) & ~(3UL << 14) );
AjK 0:0a841b89d614 97 LPC_GPIO1->FIODIR |= ( (1UL << 18) | (1UL << 20) | (1UL << 21) | (1UL << 23) );
AjK 0:0a841b89d614 98 #endif
AjK 0:0a841b89d614 99
AjK 0:0a841b89d614 100
AjK 0:0a841b89d614 101 SSP0_CS_DEASSERT;
AjK 0:0a841b89d614 102 FLASH_CS_DEASSERT;
AjK 0:0a841b89d614 103 SDCARD_CS_DEASSERT;
AjK 0:0a841b89d614 104 AA02E48_CS_DEASSERT;
AjK 0:0a841b89d614 105 MAX7456_CS_DEASSERT;
AjK 0:0a841b89d614 106
AjK 0:0a841b89d614 107 DEBUG_INIT_END;
AjK 0:0a841b89d614 108 }
AjK 0:0a841b89d614 109
AjK 0:0a841b89d614 110 /** gpio_process
AjK 0:0a841b89d614 111 */
AjK 0:0a841b89d614 112 void gpio_process(void) {
AjK 0:0a841b89d614 113 /* Does nothing, no house keeping required. */
AjK 0:0a841b89d614 114 }
AjK 0:0a841b89d614 115