work on beacon

[aversive.git] / projects / microb2010 / tests / beacon_tsop / pwm_config.h

diff --git a/projects/microb2010/tests/beacon_tsop/pwm_config.h b/projects/microb2010/tests/beacon_tsop/pwm_config.h
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+/*  
+ *  Copyright Droids Corporation, Microb Technology, Eirbot (2005)
+ * 
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *  Revision : $Id: pwm_config.h,v 1.2.6.3 2007-09-06 08:18:22 zer0 Exp $
+ *
+ */
+
+/* Droids-corp, Eirbot, Microb Technology 2005 - Zer0
+ * Config for PWM
+ */
+/** \file pwm_config.h
+    \brief Module to operate all PWM outputs
+
+    \test not tested
+ 
+*/
+
+
+#ifndef _PWM_CONFIG_
+#define _PWM_CONFIG_
+
+#define _PWM_CONFIG_VERSION_ 2
+
+/* Which PWM are enabled ? */
+//#define PWM0_ENABLED
+#define PWM1A_ENABLED
+//#define PWM1B_ENABLED
+//#define PWM1C_ENABLED
+//#define PWM2_ENABLED
+//#define PWM3A_ENABLED
+//#define PWM3B_ENABLED
+//#define PWM3C_ENABLED
+
+
+/** max value for PWM entry, default 12 bits > 4095 */
+#define PWM_SIGNIFICANT_BITS 12
+
+// timer configs (not all possibilities can be used at this time)
+#define TIMER0_MODE     TIMER_8_MODE_PWM
+#define TIMER0_PRESCALE TIMER0_PRESCALER_DIV_64
+
+#define TIMER1_MODE     TIMER_16_MODE_PWM_10
+#define TIMER1_PRESCALE TIMER1_PRESCALER_DIV_8
+
+#define TIMER2_MODE     TIMER_8_MODE_PWM
+#define TIMER2_PRESCALE TIMER1_PRESCALER_DIV_64
+
+#define TIMER3_MODE     TIMER_16_MODE_PWM_10
+#define TIMER3_PRESCALE TIMER3_PRESCALER_DIV_8
+
+
+
+
+/** config for pwm and signs
+
+The pwm mode is defined as follows :
+you can add flags like the ones who follow : 
+
+PWM_NORMAL            : normal pwm, just to put a value if nothing else is needed
+PWM_REVERSE           : invert pwm output, not sign
+
+PWM_SIGNED            : activate the sign output on a port (see config)
+PWM_SIGN_INVERTED     : invert sign output
+PWM_SPECIAL_SIGN_MODE : if defined, the pwm is always near 0 for low values, 
+                        else negative low values are near 100%
+
+
+the values of PWMxx_SIGN_PORT and PWMxx_SIGN_BIT are simply ignored if the PWM is not signed
+
+
+if you need for example a PWM1A with special sign mode you configure like this : 
+
+#define PWM1A_MODE       (PWM_SIGNED | PWM_SPECIAL_SIGN_MODE)
+#define PWM1A_SIGN_PORT  PORTB
+#define PWM1A_SIGN_BIT   2
+
+*/
+
+
+
+// example for signed pwm1A
+#define PWM1A_MODE       (PWM_SIGNED)
+#define PWM1A_SIGN_PORT  PORTB
+#define PWM1A_SIGN_BIT   2
+
+
+
+
+
+/** 
+PWM synchronization.
+
+this makes the PWMs synchronized.
+just activate the timers you want to synchronize
+
+to synch PWMs you need to enshure that the timers have same prescales. This is verified.
+you need also to enshure that the PWM mode is the same, this is NOT verified !!
+especially, for syncing 8 and 16 bit timers, the PWM mode should be 8 bit.
+
+
+side effect : on some controllers prescalers are shared, so unwanted prescalers can be reset.
+
+This feature is not 100% shure for the moment, but has been tested on M32 and M128
+*/
+
+//#define TIMER0_SYNCH
+//#define TIMER1_SYNCH
+//#define TIMER2_SYNCH
+//#define TIMER3_SYNCH
+
+
+
+#endif
+