Minimum Placid Platypus Trial

conf/modules/MPPT.xml

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+<!DOCTYPE module SYSTEM "module.dtd">
+
+<module name="MPPT">
+  <header>
+    <file name="MPPT.h"/>
+  </header>
+  <init fun="MPPT_init()"/>
+  <periodic fun="MPPT_periodic()" freq="4." delay="4" autorun="TRUE"/>
+  <makefile target="ap">
+    <file name="MPPT.c"/>
+  </makefile>
+  <makefile target="sim">
+    <file name="sim_MPPT.c"/>
+  </makefile>
+</module>
+

sw/airborne/modules/MPPT/MPPT.c

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+/*
+ * $Id$
+ *  
+ * Copyright (C) 2009  ENAC, Pascal Brisset, Michel Gorraz
+ *
+ * This file is part of paparazzi.
+ * 
+ * paparazzi 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, or (at your option)
+ * any later version.
+ *
+ * paparazzi 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 paparazzi; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA. 
+ *
+ */
+
+
+#include <stdbool.h>
+#include "MPPT.h"
+#include "main_fbw.h"
+#include "i2c.h"
+
+
+#define MPPT_SLAVE_ADDR 0x40
+#define NB_DATA 8
+#define MPPT_MODE_ADDR 0xf
+#define MPPT_IBAT_INDEX 1
+
+/**
+ 0: VBat (mV)
+ 1: IBat (mA)
+ 2: PBat (mW)
+ 3: VSol (mV)
+ 4: ISol (mA)
+ 5: PSol (mW)
+ 6: IConv (mA)
+ 7: PConv (mW)
+*/
+
+
+
+#ifndef DOWNLINK_DEVICE
+#define DOWNLINK_DEVICE DOWNLINK_AP_DEVICE
+#endif
+#include "uart.h"
+#include "messages.h"
+#include "downlink.h"
+
+static volatile bool_t MPPT_i2c_done;
+
+uint8_t MPPT_mode;
+/** A value different from 0 is a request from this mode */
+
+static uint8_t MPPT_status;
+#define MPPT_STATUS_IDLE 0
+#define MPPT_STATUS_WRITING 1
+#define MPPT_STATUS_ASKING 2
+#define MPPT_STATUS_READING 3
+
+
+static uint8_t data_index = 0xff;
+int16_t MPPT_data[NB_DATA];
+
+void MPPT_init( void ) {
+  MPPT_mode = 0;
+  MPPT_status = MPPT_STATUS_IDLE;
+  MPPT_i2c_done = TRUE;
+}
+
+
+
+static void MPPT_ask( void ) {
+  data_index++;
+  if (data_index >= NB_DATA) {
+    /* Setting the current value */
+    fbw_current_milliamp = MPPT_data[MPPT_IBAT_INDEX];
+
+
+    DOWNLINK_SEND_MPPT(DefaultChannel, NB_DATA, MPPT_data);
+    data_index = 0;
+  }
+  
+  i2c0_buf[0] = data_index;
+  i2c0_transmit(MPPT_SLAVE_ADDR, 1, &MPPT_i2c_done);
+  MPPT_i2c_done = FALSE;
+  MPPT_status = MPPT_STATUS_ASKING;
+}
+
+void MPPT_periodic( void ) {
+  //  MPPT_i2c_done = TRUE;
+
+  if (MPPT_i2c_done) {
+    switch (MPPT_status) {
+    case MPPT_STATUS_IDLE:
+      /* If free, change mode if needed */
+      if (MPPT_mode) {
+	i2c0_buf[0] = MPPT_MODE_ADDR;
+	i2c0_buf[1] = 0;
+	i2c0_buf[2] = MPPT_mode;
+	i2c0_transmit(MPPT_SLAVE_ADDR, 3, &MPPT_i2c_done);
+	MPPT_i2c_done = FALSE;
+	MPPT_mode = 0;
+	MPPT_status = MPPT_STATUS_WRITING;
+      } else {
+	MPPT_ask();
+      }
+      break;
+
+    case MPPT_STATUS_WRITING:
+      MPPT_status = MPPT_STATUS_IDLE;
+      break;
+
+    case MPPT_STATUS_ASKING:
+      /* The slave should send 2 bytes */
+      i2c0_receive(MPPT_SLAVE_ADDR, 2, &MPPT_i2c_done);
+      MPPT_i2c_done = FALSE;
+      MPPT_status = MPPT_STATUS_READING;
+      break;
+    
+    case MPPT_STATUS_READING:
+      /* We got 2 bytes */
+      if (data_index < NB_DATA)
+	MPPT_data[data_index] = (i2c0_buf[0]<<8) | i2c0_buf[1];
+      MPPT_status = MPPT_STATUS_IDLE;
+      break;
+    }
+  }
+}
+
+

sw/airborne/modules/MPPT/MPPT.h

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+/*
+ * $Id$
+ *  
+ * Copyright (C) 2009  ENAC, Pascal Brisset, Michel Gorraz
+ *
+ * This file is part of paparazzi.
+ * 
+ * paparazzi 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, or (at your option)
+ * any later version.
+ *
+ * paparazzi 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 paparazzi; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA. 
+ *
+ */
+
+/** \file MPTT.h
+ *  \brief Solar cells MPTT monitoring
+ *
+ */
+
+#ifndef MPPT_H
+#define MPPT_H
+
+#include <inttypes.h>
+
+#define MPPT_MODE_OFF     1
+#define MPPT_MODE_PASSIVE 2
+#define MPPT_MODE_ACTIVE  3
+
+
+extern uint8_t MPPT_mode;
+
+void MPPT_init( void ); 
+void MPPT_automata( void );
+void MPPT_periodic( void );
+
+#endif // MPPT_H

sw/airborne/modules/MPPT/sim_MPPT.c

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+/*
+ * $Id$
+ *  
+ * Copyright (C) 2009  ENAC, Pascal Brisset, Michel Gorraz
+ *
+ * This file is part of paparazzi.
+ * 
+ * paparazzi 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, or (at your option)
+ * any later version.
+ *
+ * paparazzi 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 paparazzi; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA. 
+ *
+ */
+
+
+#include "MPPT.h"
+
+void MPPT_init( void ) {
+}
+
+void MPPT_periodic( void ) {
+}