mirror of
https://github.com/MarlinFirmware/Marlin.git
synced 2024-12-18 08:17:18 +00:00
219 lines
4.2 KiB
C
219 lines
4.2 KiB
C
/*
|
|
|
|
u8g_com_io.c
|
|
|
|
abstraction layer for low level i/o
|
|
|
|
Universal 8bit Graphics Library
|
|
|
|
Copyright (c) 2012, olikraus@gmail.com
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice, this list
|
|
of conditions and the following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above copyright notice, this
|
|
list of conditions and the following disclaimer in the documentation and/or other
|
|
materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
|
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
|
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
|
|
*/
|
|
|
|
#include "u8g.h"
|
|
|
|
#if defined(__AVR__)
|
|
|
|
#include <avr/interrupt.h>
|
|
#include <avr/io.h>
|
|
|
|
typedef volatile uint8_t * IO_PTR;
|
|
|
|
/* create internal pin number */
|
|
uint8_t u8g_Pin(uint8_t port, uint8_t bitpos)
|
|
{
|
|
port <<= 3;
|
|
port += bitpos;
|
|
return port;
|
|
}
|
|
|
|
const IO_PTR u8g_avr_ddr_P[] PROGMEM = {
|
|
#ifdef DDRA
|
|
&DDRA,
|
|
#else
|
|
0,
|
|
#endif
|
|
&DDRB,
|
|
#ifdef DDRC
|
|
&DDRC,
|
|
#ifdef DDRD
|
|
&DDRD,
|
|
#ifdef DDRE
|
|
&DDRE,
|
|
#ifdef DDRF
|
|
&DDRF,
|
|
#ifdef DDRG
|
|
&DDRG,
|
|
#ifdef DDRH
|
|
&DDRH,
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
};
|
|
|
|
|
|
const IO_PTR u8g_avr_port_P[] PROGMEM = {
|
|
#ifdef PORTA
|
|
&PORTA,
|
|
#else
|
|
0,
|
|
#endif
|
|
&PORTB,
|
|
#ifdef PORTC
|
|
&PORTC,
|
|
#ifdef PORTD
|
|
&PORTD,
|
|
#ifdef PORTE
|
|
&PORTE,
|
|
#ifdef PORTF
|
|
&PORTF,
|
|
#ifdef PORTG
|
|
&PORTG,
|
|
#ifdef PORTH
|
|
&PORTH,
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
};
|
|
|
|
const IO_PTR u8g_avr_pin_P[] PROGMEM = {
|
|
#ifdef PINA
|
|
&PINA,
|
|
#else
|
|
0,
|
|
#endif
|
|
&PINB,
|
|
#ifdef PINC
|
|
&PINC,
|
|
#ifdef PIND
|
|
&PIND,
|
|
#ifdef PINE
|
|
&PINE,
|
|
#ifdef PINF
|
|
&PINF,
|
|
#ifdef PING
|
|
&PING,
|
|
#ifdef PINH
|
|
&PINH,
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
};
|
|
|
|
static volatile uint8_t *u8g_get_avr_io_ptr(const IO_PTR *base, uint8_t offset)
|
|
{
|
|
volatile uint8_t * tmp;
|
|
base += offset;
|
|
memcpy_P(&tmp, base, sizeof(volatile uint8_t * PROGMEM));
|
|
return tmp;
|
|
}
|
|
|
|
/* set direction to output of the specified pin (internal pin number) */
|
|
void u8g_SetPinOutput(uint8_t internal_pin_number)
|
|
{
|
|
*u8g_get_avr_io_ptr(u8g_avr_ddr_P, internal_pin_number>>3) |= _BV(internal_pin_number&7);
|
|
}
|
|
|
|
void u8g_SetPinInput(uint8_t internal_pin_number)
|
|
{
|
|
*u8g_get_avr_io_ptr(u8g_avr_ddr_P, internal_pin_number>>3) &= ~_BV(internal_pin_number&7);
|
|
}
|
|
|
|
void u8g_SetPinLevel(uint8_t internal_pin_number, uint8_t level)
|
|
{
|
|
volatile uint8_t * tmp = u8g_get_avr_io_ptr(u8g_avr_port_P, internal_pin_number>>3);
|
|
|
|
if ( level == 0 )
|
|
*tmp &= ~_BV(internal_pin_number&7);
|
|
else
|
|
*tmp |= _BV(internal_pin_number&7);
|
|
}
|
|
|
|
uint8_t u8g_GetPinLevel(uint8_t internal_pin_number)
|
|
{
|
|
volatile uint8_t * tmp = u8g_get_avr_io_ptr(u8g_avr_pin_P, internal_pin_number>>3);
|
|
if ( ((*tmp) & _BV(internal_pin_number&7)) != 0 )
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
uint8_t u8g_Pin(uint8_t port, uint8_t bitpos)
|
|
{
|
|
port <<= 3;
|
|
port += bitpos;
|
|
return port;
|
|
}
|
|
|
|
void u8g_SetPinOutput(uint8_t internal_pin_number)
|
|
{
|
|
}
|
|
|
|
void u8g_SetPinInput(uint8_t internal_pin_number)
|
|
{
|
|
}
|
|
|
|
void u8g_SetPinLevel(uint8_t internal_pin_number, uint8_t level)
|
|
{
|
|
}
|
|
|
|
uint8_t u8g_GetPinLevel(uint8_t internal_pin_number)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
void u8g_SetPIOutput(u8g_t *u8g, uint8_t pi)
|
|
{
|
|
uint8_t pin;
|
|
pin = u8g->pin_list[pi];
|
|
if ( pin != U8G_PIN_NONE )
|
|
u8g_SetPinOutput(pin);
|
|
}
|
|
|
|
void u8g_SetPILevel(u8g_t *u8g, uint8_t pi, uint8_t level)
|
|
{
|
|
uint8_t pin;
|
|
pin = u8g->pin_list[pi];
|
|
if ( pin != U8G_PIN_NONE )
|
|
u8g_SetPinLevel(pin, level);
|
|
}
|