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00001 /* 00002 * Copyright (c) 2010, Mariano Alvira <mar@devl.org> and other contributors 00003 * to the MC1322x project (http://mc1322x.devl.org) 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 1. Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 2. Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * 3. Neither the name of the Institute nor the names of its contributors 00015 * may be used to endorse or promote products derived from this software 00016 * without specific prior written permission. 00017 * 00018 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00019 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00020 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00021 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00022 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00023 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00024 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00025 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00026 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00027 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00028 * SUCH DAMAGE. 00029 * 00030 * This file is part of libmc1322x: see http://mc1322x.devl.org 00031 * for details. 00032 * 00033 * 00034 */ 00035 00036 #include <mc1322x.h> 00037 #include <board.h> 00038 #include <stdio.h> 00039 00040 #include "config.h" 00041 #include "pwm.h" 00042 #include "rtc.h" 00043 00044 int main(void) 00045 { 00046 int x = 32768; 00047 00048 trim_xtal(); 00049 uart1_init(INC,MOD,SAMP); 00050 rtc_init(); 00051 00052 printf("pwm test\r\n"); 00053 pwm_init_stopped(TMR0, 12000000, x); 00054 pwm_init_stopped(TMR1, 12000000, x); 00055 TMR0->ENBL |= TMR_ENABLE_BIT(TMR0) | TMR_ENABLE_BIT(TMR1); 00056 00057 for(;;) { 00058 printf("duty %d = %d%%\r\n", x, ((x * 100 + 32768) / 65536)); 00059 switch(uart1_getc()) { 00060 case '[': x -= 1; break; 00061 case ']': x += 1; break; 00062 case '-': x -= 32; break; 00063 case '=': x += 32; break; 00064 case '_': x -= 512; break; 00065 case '+': x += 512; break; 00066 00067 case '`': x = 65535 * 0/10; break; 00068 case '1': x = 65535 * 1/10; break; 00069 case '2': x = 65535 * 2/10; break; 00070 case '3': x = 65535 * 3/10; break; 00071 case '4': x = 65535 * 4/10; break; 00072 case '5': x = 65535 * 5/10; break; 00073 case '6': x = 65535 * 6/10; break; 00074 case '7': x = 65535 * 7/10; break; 00075 case '8': x = 65535 * 8/10; break; 00076 case '9': x = 65535 * 9/10; break; 00077 case '0': x = 65535 * 10/10; break; 00078 00079 } 00080 x &= 65535; 00081 pwm_duty(TMR0, x); 00082 } 00083 } 00084 00085