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authorNicolas Schodet2007-10-07 22:16:03 +0200
committerNicolas Schodet2007-10-07 22:16:03 +0200
commit583f00e0b8efe2832f63efb478a51d3ad35e92ed (patch)
treee2cd42af768a4d248883d7fcebcb2124aad6fbe5 /digital/avr/modules/adc
parente38de75f64149d148e66572e330b7ce808782b1f (diff)
Included SI2E avr modules.
Well, this need more works...
Diffstat (limited to 'digital/avr/modules/adc')
-rw-r--r--digital/avr/modules/adc/Makefile.module1
-rw-r--r--digital/avr/modules/adc/README25
-rw-r--r--digital/avr/modules/adc/adc.c67
-rw-r--r--digital/avr/modules/adc/adc.h51
4 files changed, 144 insertions, 0 deletions
diff --git a/digital/avr/modules/adc/Makefile.module b/digital/avr/modules/adc/Makefile.module
new file mode 100644
index 00000000..d14349c3
--- /dev/null
+++ b/digital/avr/modules/adc/Makefile.module
@@ -0,0 +1 @@
+adc_SOURCES = adc.c
diff --git a/digital/avr/modules/adc/README b/digital/avr/modules/adc/README
new file mode 100644
index 00000000..ce7d8827
--- /dev/null
+++ b/digital/avr/modules/adc/README
@@ -0,0 +1,25 @@
+avr.adc - ADC AVR module.
+
+Analog to Digital Converter module for AVR. See modules README for more
+details about AVR modules.
+
+
+Copyright (C) 2005 Nicolas Schodet
+
+Robot APB Team/Efrei 2006.
+ Web: http://assos.efrei.fr/robot/
+ Email: robot AT efrei DOT fr
+
+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.
diff --git a/digital/avr/modules/adc/adc.c b/digital/avr/modules/adc/adc.c
new file mode 100644
index 00000000..d6ae9094
--- /dev/null
+++ b/digital/avr/modules/adc/adc.c
@@ -0,0 +1,67 @@
+/* adc.c */
+/* n.avr.adc - AVR ADC Module. {{{
+ *
+ * Copyright (C) 2005 Thomas Burg
+ *
+ * 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.
+ *
+ * Contact :
+ * Email: burg AT efrei DOT fr
+ * }}} */
+#include "adc.h"
+
+#include "io.h"
+#include "modules/utils/utils.h"
+
+/* Tested AVR check. */
+#if defined (__AVR_ATmega8__)
+#elif defined (__AVR_ATmega8535__)
+#elif defined (__AVR_ATmega128__)
+#elif defined (__AVR_ATmega64__)
+#else
+# warning "adc: not tested on this chip."
+#endif
+
+/* ADC configuration. */
+/* REFS = 01: AVCC with external capacitor at AREF pin.
+ * 11: Internal 2.56V Voltage Reference with external capacitor
+ * at AREF pin. */
+#define ADMUX_CFG (regv (REFS1, REFS0, ADLAR, MUX4, MUX3, MUX2, MUX1, MUX0, \
+ 1, 1, 0, 0, 0, 0, 0, 0))
+#define ADCSR_CFG (regv (ADEN, ADSC, ADATE, ADIF, ADIE, ADPS2, ADPS1, ADPS0, \
+ 1, 0, 0, 1, 0, 0, 0, 0))
+#define ADCSR_CFG_115200 7
+
+/* +AutoDec */
+/* -AutoDec */
+
+/** Initialise adc. */
+void
+adc_init (void)
+{
+ /* Low freq. */
+ ADCSR = ADCSR_CFG | ADCSR_CFG_115200;
+}
+
+/** Choose and start mesure on adc line. */
+void
+adc_start (uint8_t c)
+{
+ /* Choose adc. */
+ ADMUX = ADMUX_CFG | (c & 0x07);
+ /* Start mesure. */
+ ADCSR |= _BV (ADSC);
+}
+
diff --git a/digital/avr/modules/adc/adc.h b/digital/avr/modules/adc/adc.h
new file mode 100644
index 00000000..56ae8c59
--- /dev/null
+++ b/digital/avr/modules/adc/adc.h
@@ -0,0 +1,51 @@
+#ifndef adc_h
+#define adc_h
+/* adc.h */
+/* n.avr.adc - AVR ADC Module. {{{
+ *
+ * Copyright (C) 2005 Thomas Burg
+ *
+ * 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.
+ *
+ * Contact :
+ * Email: burg AT efrei DOT fr
+ * }}} */
+
+#include "common.h"
+/* Different name on ATmega8535. */
+
+#if defined (__AVR_ATmega8535__)
+#define ADCSR ADCSRA
+#endif
+
+/* +AutoDec */
+
+/** Initialise adc. */
+void
+adc_init (void);
+
+/** Choose and start mesure on adc line. */
+void
+adc_start (uint8_t c);
+
+/* -AutoDec */
+
+/** check on finish mesure */
+#define adc_checkf() bit_is_set (ADCSR, ADIF)
+
+/** read mesure */
+#define adc_read() ADCW
+
+#endif /* adc_h */