/* * Copyright (C) 2009 by Rittal GmbH & Co. KG, * Ulrich Prinz <prinz.u@rittal.de> All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY EMBEDDED IT AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EMBEDDED IT * OR CONTRIBUTORS 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. * * For additional information see http://www.ethernut.de/ * */ /* * $Log$ * * Revision 1.0 2009/04/13 ulrichprinz * First checkin, driver for PCA9555 I2C I/O-Expander (currently SAM7X256 is * tested only) * */ #include <stdio.h> #include <io.h> #include <cfg/arch.h> #include <dev/board.h> #include <dev/gpio.h> #include <sys/thread.h> #include <sys/timer.h> #include <dev/pca9555.h> #include <dev/led.h> #define KEY1 (1<<0) #define KEY2 (1<<1) #define KEY3 (1<<2) #define KEY4 (1<<3) /******************************************************************/ THREAD(Thread1, arg) /******************************************************************/ { HANDLE ds1, ds2, ds3; int ledmask = 1; if( NutRegisterLed( &ds1, IOXP_PORT1, 0) == 0) printf( "register LED 1 OK\n"); if( NutRegisterLed( &ds2, IOXP_PORT1, 1) == 0) printf( "register LED 2 OK\n"); if( NutRegisterLed( &ds3, IOXP_PORT1, 2) == 0) printf( "register LED 3 OK\n"); NutThreadSetPriority(128); for (;;) { NutSetLed( ds1, 0, (ledmask>>0) & 1); NutSetLed( ds2, 0, (ledmask>>1) & 1); NutSetLed( ds3, 0, (ledmask>>2) & 1); ledmask <<= 1; if( ledmask & (1<<3)) ledmask = 1; NutSleep(250); } } /******************************************************************/ THREAD(Thread2, arg) /******************************************************************/ { uint8_t key, oldkey; uint8_t flag = 1; int rc; HANDLE led3; printf( "Key and LED test for PCA9555\n" ); if( NutRegisterLed( &led3, IOXP_PORT1, 3) == 0) printf( "register LED 4 OK\n"); oldkey = ~key; NutThreadSetPriority(128); for (;;) { key = 0; rc = IOExpRawRead( 0, &key); if( key != oldkey) { if( key > oldkey) { /* flash led if key is pressed */ NutSetLed( led3, 5, LED_ONESHOT); } oldkey = key; printf( "IOER rc=%d key=0x%02x\n", rc, key); if( rc >= 0) { if( flag == 0 ) { flag = 1; if( key & KEY1) printf( "Key 1 pressed\n" ); if( key & KEY2) printf( "Key 2 pressed\n" ); if( key & KEY3) printf( "Key 3 pressed\n" ); if( key & KEY4) printf( "Key 4 pressed\n" ); } } else { flag = 0; } } NutSleep(125); } } /******************************************************************/ int main(void) /******************************************************************/ { u_long baud = 115200; HANDLE led4; /* * Register the UART device, open it, assign stdout to it and set * the baudrate. */ NutRegisterDevice(&DEV_DEBUG, 0, 0); freopen(DEV_DEBUG_NAME, "w", stdout); _ioctl(_fileno(stdout), UART_SETSPEED, &baud); printf("Init TWI... "); baud = 400000; if( TwInit( 0 ) == 0) /* par = slave address but we are master */ printf( "OK\n"); else printf( "FAIL\n"); TwIOCtl( TWI_SETSPEED, &baud); printf("Init PCA9555... "); if( IOExpInit() == 0) printf( "OK\n"); else printf( "FAIL\n"); if( NutRegisterLed( &led4, IOXP_PORT1, 4) == 0) printf( "register LED B OK\n"); NutSetLed( led4, 100, LED_BLINK); /* * Start two additional threads. All threads are started with * priority 64. */ NutThreadCreate("led", Thread1, 0, 512); NutThreadCreate("key", Thread2, 0, 512); /* * Endless loop in main thread. */ for (;;) { NutSleep(5000); } return 0; }