remove superfluous files

This commit is contained in:
devsaurus 2015-02-13 22:01:52 +01:00
parent 655b06b48e
commit 05997cb477
3 changed files with 0 additions and 2692 deletions

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/*
u8g_com_raspberrypi_hw_spi.c
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.
Assumes, that
MOSI is at PORTB, Pin 3
and
SCK is at PORTB, Pin 5
Update for ATOMIC operation done (01 Jun 2013)
U8G_ATOMIC_OR(ptr, val)
U8G_ATOMIC_AND(ptr, val)
U8G_ATOMIC_START()
U8G_ATOMIC_END()
*/
#include "u8g.h"
#if defined(U8G_RASPBERRY_PI)
#include <wiringPiSPI.h>
#include <wiringPi.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
uint8_t u8g_com_raspberrypi_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_INIT:
// check wiringPi setup
if (wiringPiSetup() == -1)
{
printf("wiringPi-Error\n");
exit(1);
}
if (wiringPiSPISetup (0, 100000) < 0)
{
printf ("Unable to open SPI device 0: %s\n", strerror (errno)) ;
exit (1) ;
}
u8g_SetPIOutput(u8g, U8G_PI_RESET);
u8g_SetPIOutput(u8g, U8G_PI_A0);
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
u8g_SetPILevel(u8g, U8G_PI_A0, arg_val);
break;
case U8G_COM_MSG_CHIP_SELECT:
/* Done by the SPI hardware */
break;
case U8G_COM_MSG_RESET:
u8g_SetPILevel(u8g, U8G_PI_RESET, arg_val);
break;
case U8G_COM_MSG_WRITE_BYTE:
wiringPiSPIDataRW (0, &arg_val, 1) ;
break;
case U8G_COM_MSG_WRITE_SEQ:
wiringPiSPIDataRW (0, arg_ptr, arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ_P:
wiringPiSPIDataRW (0, arg_ptr, arg_val);
break;
}
return 1;
}
#else
uint8_t u8g_com_raspberrypi_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
return 1;
}
#endif

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/*
Special pin usage:
U8G_PI_I2C_OPTION additional options
U8G_PI_A0_STATE used to store the last value of the command/data register selection
U8G_PI_SET_A0 1: Signal request to update I2C device with new A0_STATE, 0: Do nothing, A0_STATE matches I2C device
U8G_PI_SCL clock line (NOT USED)
U8G_PI_SDA data line (NOT USED)
U8G_PI_RESET reset line (currently disabled, see below)
Protocol:
SLA, Cmd/Data Selection, Arguments
The command/data register is selected by a special instruction byte, which is sent after SLA
The continue bit is always 0 so that a (re)start is equired for the change from cmd to/data mode
*/
#include "u8g.h"
#if defined(U8G_RASPBERRY_PI)
#include <wiringPi.h>
#include <wiringPiI2C.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#define I2C_SLA 0x3c
#define I2C_CMD_MODE 0x000
#define I2C_DATA_MODE 0x040
#if defined(U8G_WITH_PINLIST)
uint8_t u8g_com_raspberrypi_ssd_start_sequence(u8g_t *u8g)
{
/* are we requested to set the a0 state? */
if ( u8g->pin_list[U8G_PI_SET_A0] == 0 )
return 1;
/* setup bus, might be a repeated start */
if ( u8g_i2c_start(I2C_SLA) == 0 )
return 0;
if ( u8g->pin_list[U8G_PI_A0_STATE] == 0 )
{
if ( u8g_i2c_send_mode(I2C_CMD_MODE) == 0 )
return 0;
}
else
{
if ( u8g_i2c_send_mode(I2C_DATA_MODE) == 0 )
return 0;
}
u8g->pin_list[U8G_PI_SET_A0] = 0;
return 1;
}
uint8_t u8g_com_raspberrypi_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
u8g_i2c_init(u8g->pin_list[U8G_PI_I2C_OPTION]);
u8g_SetPIOutput(u8g, U8G_PI_RESET);
u8g_SetPIOutput(u8g, U8G_PI_A0);
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_RESET:
break;
case U8G_COM_MSG_CHIP_SELECT:
u8g->pin_list[U8G_PI_A0_STATE] = 0;
u8g->pin_list[U8G_PI_SET_A0] = 1; /* force a0 to set again, also forces start condition */
if ( arg_val == 0 )
{
/* disable chip, send stop condition */
u8g_i2c_stop();
}
else
{
/* enable, do nothing: any byte writing will trigger the i2c start */
}
break;
case U8G_COM_MSG_WRITE_BYTE:
//u8g->pin_list[U8G_PI_SET_A0] = 1;
if ( u8g_com_raspberrypi_ssd_start_sequence(u8g) == 0 )
return u8g_i2c_stop(), 0;
if ( u8g_i2c_send_byte(arg_val) == 0 )
return u8g_i2c_stop(), 0;
// u8g_i2c_stop();
break;
case U8G_COM_MSG_WRITE_SEQ:
//u8g->pin_list[U8G_PI_SET_A0] = 1;
if ( u8g_com_raspberrypi_ssd_start_sequence(u8g) == 0 )
return u8g_i2c_stop(), 0;
{
register uint8_t *ptr = (uint8_t *)arg_ptr;
while( arg_val > 0 )
{
if ( u8g_i2c_send_byte(*ptr++) == 0 )
return u8g_i2c_stop(), 0;
arg_val--;
}
}
// u8g_i2c_stop();
break;
case U8G_COM_MSG_WRITE_SEQ_P:
//u8g->pin_list[U8G_PI_SET_A0] = 1;
if ( u8g_com_raspberrypi_ssd_start_sequence(u8g) == 0 )
return u8g_i2c_stop(), 0;
{
register uint8_t *ptr = (uint8_t *)arg_ptr;
while( arg_val > 0 )
{
if ( u8g_i2c_send_byte(u8g_pgm_read(ptr)) == 0 )
return 0;
ptr++;
arg_val--;
}
}
// u8g_i2c_stop();
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
u8g->pin_list[U8G_PI_A0_STATE] = arg_val;
u8g->pin_list[U8G_PI_SET_A0] = 1; /* force a0 to set again */
#ifdef OLD_CODE
if ( i2c_state != 0 )
{
u8g_i2c_stop();
i2c_state = 0;
}
if ( u8g_com_raspberrypi_ssd_start_sequence(arg_val) == 0 )
return 0;
/* setup bus, might be a repeated start */
/*
if ( u8g_i2c_start(I2C_SLA) == 0 )
return 0;
if ( arg_val == 0 )
{
i2c_state = 1;
if ( u8g_i2c_send_byte(I2C_CMD_MODE) == 0 )
return 0;
}
else
{
i2c_state = 2;
if ( u8g_i2c_send_byte(I2C_DATA_MODE) == 0 )
return 0;
}
*/
#endif
break;
}
return 1;
}
#else /* defined(U8G_WITH_PINLIST) */
uint8_t u8g_com_raspberrypi_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) {
return 1;
}
#endif /* defined(U8G_WITH_PINLIST) */
#endif