From eee46acd8c68d2576d4851d3f24fa22ced608f1e Mon Sep 17 00:00:00 2001
From: Michel Pollet <buserror@gmail.com>
Date: Sun, 20 Dec 2009 23:05:38 +0000
Subject: [PATCH] ADC: Placeholder IO module

Not doing anything for now, but the IO blocks are filled
in the core definitiond already.

Signed-off-by: Michel Pollet <buserror@gmail.com>
---
 simavr/sim/avr_adc.c | 45 ++++++++++++++++++++++++++++++++++
 simavr/sim/avr_adc.h | 57 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 102 insertions(+)
 create mode 100644 simavr/sim/avr_adc.c
 create mode 100644 simavr/sim/avr_adc.h

diff --git a/simavr/sim/avr_adc.c b/simavr/sim/avr_adc.c
new file mode 100644
index 0000000..4b9a7bd
--- /dev/null
+++ b/simavr/sim/avr_adc.c
@@ -0,0 +1,45 @@
+/*
+	avr_adc.c
+
+	Copyright 2008, 2009 Michel Pollet <buserror@gmail.com>
+
+ 	This file is part of simavr.
+
+	simavr 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 3 of the License, or
+	(at your option) any later version.
+
+	simavr 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 simavr.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "avr_adc.h"
+
+/*
+ * PLACEHOLDER ADC MODULE
+ */
+
+static	avr_io_t	_io = {
+	.kind = "adc",
+};
+
+void avr_adc_init(avr_t * avr, avr_adc_t * p)
+{
+	p->io = _io;
+
+	avr_register_io(avr, &p->io);
+	avr_register_vector(avr, &p->adc);
+
+//	avr_register_io_write(avr, p->r_eecr, avr_eeprom_write, p);
+}
+
diff --git a/simavr/sim/avr_adc.h b/simavr/sim/avr_adc.h
new file mode 100644
index 0000000..e756871
--- /dev/null
+++ b/simavr/sim/avr_adc.h
@@ -0,0 +1,57 @@
+/*
+	avr_adc.h
+
+	Copyright 2008, 2009 Michel Pollet <buserror@gmail.com>
+
+ 	This file is part of simavr.
+
+	simavr 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 3 of the License, or
+	(at your option) any later version.
+
+	simavr 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 simavr.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __AVR_ADC_H___
+#define __AVR_ADC_H___
+
+#include "sim_avr.h"
+
+typedef struct avr_adc_t {
+	avr_io_t		io;
+
+	uint8_t 		r_admux;
+	// if the last bit exists in the mux, we are an extended ADC
+	avr_regbit_t	mux[5];
+	avr_regbit_t	ref[3];		// reference voltage
+	avr_regbit_t 	adlar;		// left/right adjustment bit
+
+	uint8_t			r_adcsra;	// ADC Control and Status Register A
+	avr_regbit_t 	aden;		// ADC Enabled
+	avr_regbit_t 	adsc;		// ADC Start Conversion
+	avr_regbit_t 	adate;		// ADC Auto Trigger Enable
+
+	avr_regbit_t	adps[3];	// Prescaler bits. Note that it's a frequency bit shift
+
+	uint8_t			r_adcl, r_adch;	// Data Registers
+
+	uint8_t			r_adcsrb;	// ADC Control and Status Register B
+	avr_regbit_t	adts[3];	// Timing Source
+	avr_regbit_t 	bin;		// Bipolar Input Mode (tinyx5 have it)
+	avr_regbit_t 	ipr;		// Input Polarity Reversal (tinyx5 have it)
+
+
+	// use ADIF and ADIE bits
+	avr_int_vector_t adc;
+} avr_adc_t;
+
+void avr_adc_init(avr_t * avr, avr_adc_t * port);
+
+#endif /* __AVR_ADC_H___ */
-- 
2.39.5