void u8g_DrawFullScreenBitmapPLL(u8g_t *u8g, u8g_dev_t *dev, uint8_t *bitmap)
{
u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
uint8_t i, j;
uint8_t page_height;
uint8_t *ptr;
u8g->state_cb(U8G_STATE_MSG_BACKUP_ENV);
u8g->state_cb(U8G_STATE_MSG_RESTORE_U8G);
u8g_FirstPageLL( u8g, dev );
do {
page_height = pb->p.page_y1;
page_height -= pb->p.page_y0;
page_height++;
ptr = pb->buf;
for( i = 0; i < page_height; i++ ) { /* for each line in the page... */
for ( j = 0; j < pb->width; j++ ) { /* for each pixel in the line... */
*ptr++ = u8g_pgm_read( bitmap++ );
*ptr++ = u8g_pgm_read( bitmap++ );
*ptr++ = u8g_pgm_read( bitmap++ );
}
}
} while ( u8g_NextPageLL( u8g, dev ) );
u8g->state_cb(U8G_STATE_MSG_RESTORE_ENV);
}
static uint16_t u8g_font_get_word(const u8g_fntpgm_uint8_t *font, uint8_t offset)
{
uint16_t pos;
font += offset;
pos = u8g_pgm_read( (u8g_pgm_uint8_t *)font );
font++;
pos <<= 8;
pos += u8g_pgm_read( (u8g_pgm_uint8_t *)font);
return pos;
}
static void u8g_CopyGlyphDataToCache(u8g_t *u8g, u8g_glyph_t g)
{
uint8_t tmp;
switch( u8g_font_GetFormat(u8g->font) )
{
case 0:
case 2:
/*
format 0
glyph information
offset
0 BBX width unsigned
1 BBX height unsigned
2 data size unsigned (BBX width + 7)/8 * BBX height
3 DWIDTH signed
4 BBX xoffset signed
5 BBX yoffset signed
byte 0 == 255 indicates empty glyph
*/
u8g->glyph_width = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 0 );
u8g->glyph_height = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 1 );
u8g->glyph_dx = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 3 );
u8g->glyph_x = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 4 );
u8g->glyph_y = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 5 );
break;
case 1:
default:
/*
format 1
0 BBX xoffset signed --> upper 4 Bit
0 BBX yoffset signed --> lower 4 Bit
1 BBX width unsigned --> upper 4 Bit
1 BBX height unsigned --> lower 4 Bit
2 data size unsigned -(BBX width + 7)/8 * BBX height --> lower 4 Bit
2 DWIDTH signed --> upper 4 Bit
byte 0 == 255 indicates empty glyph
*/
tmp = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 0 );
u8g->glyph_y = tmp & 15;
u8g->glyph_y-=2;
tmp >>= 4;
u8g->glyph_x = tmp;
tmp = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 1 );
u8g->glyph_height = tmp & 15;
tmp >>= 4;
u8g->glyph_width = tmp;
tmp = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 2 );
tmp >>= 4;
u8g->glyph_dx = tmp;
break;
}
}
void u8g_DrawHBitmapP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t cnt, const u8g_pgm_uint8_t *bitmap)
{
while( cnt > 0 )
{
u8g_Draw8Pixel(u8g, x, y, 0, u8g_pgm_read(bitmap));
bitmap++;
cnt--;
x+=8;
}
}
/* calculate the overall length of the font, only used to create the picture for the google wiki */
size_t u8g_font_GetSize(const void *font)
{
uint8_t *p = (uint8_t *)(font);
uint8_t font_format = u8g_font_GetFormat(font);
uint8_t data_structure_size = u8g_font_GetFontGlyphStructureSize(font);
uint8_t start, end;
uint8_t i;
uint8_t mask = 255;
start = u8g_font_GetFontStartEncoding(font);
end = u8g_font_GetFontEndEncoding(font);
if ( font_format == 1 )
mask = 15;
p += U8G_FONT_DATA_STRUCT_SIZE; /* skip font general information */
i = start;
for(;;)
{
if ( u8g_pgm_read((u8g_pgm_uint8_t *)(p)) == 255 )
{
p += 1;
}
else
{
p += u8g_pgm_read( ((u8g_pgm_uint8_t *)(p)) + 2 ) & mask;
p += data_structure_size;
}
if ( i == end )
break;
i++;
}
return p - (uint8_t *)font;
}
u8g_uint_t u8g_DrawStr270P(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const u8g_pgm_uint8_t *s)
{
u8g_uint_t t = 0;
int8_t d;
x += u8g->font_calc_vref(u8g);
while( *s != '\0' )
{
d = u8g_DrawGlyph270(u8g, x, y, u8g_pgm_read(s));
y -= d;
t += d;
s++;
}
return t;
}
int8_t u8g_draw_glyph270(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
{
const u8g_pgm_uint8_t *data;
uint8_t w, h;
uint8_t i, j;
u8g_uint_t ix, iy;
{
u8g_glyph_t g = u8g_GetGlyph(u8g, encoding);
if ( g == NULL )
return 0;
data = u8g_font_GetGlyphDataStart(u8g->font, g);
}
w = u8g->glyph_width;
h = u8g->glyph_height;
x -= u8g->glyph_y;
x--;
y -= u8g->glyph_x;
if ( u8g_IsBBXIntersection(u8g, x-(h-1), y-(w-1), h, w) == 0 )
return u8g->glyph_dx;
/* now, w is reused as bytes per line */
w += 7;
w /= 8;
ix = x;
ix -= h;
ix++;
for( j = 0; j < h; j++ )
{
iy = y;
for( i = 0; i < w; i++ )
{
u8g_Draw8Pixel(u8g, ix, iy, 3, u8g_pgm_read(data));
data++;
iy-=8;
}
ix++;
}
return u8g->glyph_dx;
}
u8g_uint_t u8g_DrawStrP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const u8g_pgm_uint8_t *s)
{
u8g_uint_t t = 0;
int8_t d;
uint8_t c;
y += u8g->font_calc_vref(u8g);
for(;;)
{
c = u8g_pgm_read(s);
if ( c == '\0' )
break;
d = u8g_draw_glyph(u8g, x, y, c);
x += d;
t += d;
s++;
}
return t;
}
uint8_t u8g_com_atmega_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:
u8g_SetPIOutput(u8g, U8G_PI_CS);
u8g_SetPIOutput(u8g, U8G_PI_A0);
DDRB |= _BV(3); /* D0, MOSI */
DDRB |= _BV(5); /* SCK */
PORTB &= ~_BV(3); /* D0, MOSI = 0 */
PORTB &= ~_BV(5); /* SCK = 0 */
u8g_SetPILevel(u8g, U8G_PI_CS, 1);
/*
SPR1 SPR0
0 0 fclk/4
0 1 fclk/16
1 0 fclk/64
1 1 fclk/128
*/
SPCR = 0;
SPCR = (1<<SPE) | (1<<MSTR)|(0<<SPR1)|(0<<SPR0)|(0<<CPOL)|(0<<CPHA);
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:
if ( arg_val == 0 )
{
/* disable */
u8g_SetPILevel(u8g, U8G_PI_CS, 1);
}
else
{
PORTB &= ~_BV(5); /* SCK = 0 */
/* enable */
u8g_SetPILevel(u8g, U8G_PI_CS, 0); /* CS = 0 (low active) */
}
break;
case U8G_COM_MSG_RESET:
u8g_SetPILevel(u8g, U8G_PI_RESET, arg_val);
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_atmega_spi_out(arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_atmega_spi_out(*ptr++);
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_atmega_spi_out(u8g_pgm_read(ptr));
ptr++;
arg_val--;
}
}
break;
}
return 1;
}
//static uint8_t u8g_font_get_byte(const u8g_fntpgm_uint8_t *font, uint8_t offset) U8G_NOINLINE;
static uint8_t u8g_font_get_byte(const u8g_fntpgm_uint8_t *font, uint8_t offset)
{
font += offset;
return u8g_pgm_read( (u8g_pgm_uint8_t *)font );
}
uint8_t u8g_com_arduino_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:
u8g_com_arduino_assign_pin_output_high(u8g);
pinMode(PIN_SCK, OUTPUT);
digitalWrite(PIN_SCK, LOW);
pinMode(PIN_MOSI, OUTPUT);
digitalWrite(PIN_MOSI, LOW);
/* pinMode(PIN_MISO, INPUT); */
pinMode(PIN_CS, OUTPUT); /* system chip select for the atmega board */
digitalWrite(PIN_CS, HIGH);
/*
SPR1 SPR0
0 0 fclk/4
0 1 fclk/16
1 0 fclk/64
1 1 fclk/128
*/
SPCR = 0;
SPCR = (1<<SPE) | (1<<MSTR)|(0<<SPR1)|(0<<SPR0)|(0<<CPOL)|(0<<CPHA);
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
u8g_com_arduino_digital_write(u8g, U8G_PI_A0, arg_val);
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH);
}
else
{
/* enable */
u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, LOW);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW);
}
break;
case U8G_COM_MSG_RESET:
if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE )
u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val);
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_spi_out(arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_spi_out(*ptr++);
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_spi_out(u8g_pgm_read(ptr));
ptr++;
arg_val--;
}
}
break;
}
return 1;
}
/*
Draw a glyph
x,y: left baseline position of the glyph
*/
int8_t u8g_DrawGlyphDir(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t encoding)
{
u8g_glyph_t g;
uint8_t w, h, i, j;
const u8g_pgm_uint8_t *data;
uint8_t bytes_per_line;
u8g_uint_t ix, iy;
g = u8g_GetGlyph(u8g, encoding);
if ( g == NULL )
return 0;
w = u8g->glyph_width;
h = u8g->glyph_height;
bytes_per_line = w;
bytes_per_line += 7;
bytes_per_line /= 8;
data = u8g_font_GetGlyphDataStart(u8g->font, g);
switch(dir)
{
case 0:
x += u8g->glyph_x;
y -= u8g->glyph_y;
y--;
//u8g_DrawFrame(u8g, x, y-h+1, w, h);
if ( u8g_IsBBXIntersection(u8g, x, y-h+1, w, h) == 0 )
return u8g->glyph_dx;
iy = y;
iy -= h;
iy++;
for( j = 0; j < h; j++ )
{
ix = x;
for( i = 0; i < bytes_per_line; i++ )
{
u8g_Draw8Pixel(u8g, ix, iy, dir, u8g_pgm_read(data));
data++;
ix+=8;
}
iy++;
}
break;
case 1:
x += u8g->glyph_y;
x++;
y += u8g->glyph_x;
//printf("enc %d, dir %d, x %d, y %d, w %d, h %d\n", encoding, dir, x, y, w, h);
//u8g_DrawFrame(u8g, x, y, h, w);
if ( u8g_IsBBXIntersection(u8g, x, y, h, w) == 0 )
return u8g->glyph_dx;
ix = x;
ix += h;
ix--;
for( j = 0; j < h; j++ )
{
iy = y;
for( i = 0; i < bytes_per_line; i++ )
{
u8g_Draw8Pixel(u8g, ix, iy, dir, u8g_pgm_read(data));
data++;
iy+=8;
}
ix--;
}
break;
case 2:
x -= u8g->glyph_x;
y += u8g->glyph_y;
y++;
if ( u8g_IsBBXIntersection(u8g, x-w-1, y, w, h) == 0 )
return u8g->glyph_dx;
iy = y;
iy += h;
iy--;
for( j = 0; j < h; j++ )
{
ix = x;
for( i = 0; i < bytes_per_line; i++ )
{
u8g_Draw8Pixel(u8g, ix, iy, dir, u8g_pgm_read(data));
data++;
ix-=8;
}
iy--;
}
break;
case 3:
x -= u8g->glyph_y;
x--;
y -= u8g->glyph_x;
if ( u8g_IsBBXIntersection(u8g, x-h-1, y-w-1, h, w) == 0 )
return u8g->glyph_dx;
ix = x;
ix -= h;
ix++;
for( j = 0; j < h; j++ )
{
iy = y;
for( i = 0; i < bytes_per_line; i++ )
{
u8g_Draw8Pixel(u8g, ix, iy, dir, u8g_pgm_read(data));
data++;
iy-=8;
}
ix++;
}
break;
}
return u8g->glyph_dx;
}
uint8_t u8g_com_atxmega_st7920_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
u8g_SetPIOutput(u8g, U8G_PI_CS);
//u8g_SetPIOutput(u8g, U8G_PI_A0);
//U8G_ATOMIC_START();
PORTC.DIR |= PIN4_bm | PIN5_bm | PIN7_bm;
PORTC.DIR &= ~PIN6_bm;
//U8G_ATOMIC_END();
u8g_SetPILevel(u8g, U8G_PI_CS, 1);
SPIC.CTRL = 0;
SPIC.CTRL = SPI_PRESCALER_DIV4_gc | // SPI prescaler.
//SPI_CLK2X_bm | //SPI Clock double.
SPI_ENABLE_bm | //Enable SPI module.
//SPI_DORD_bm | //Data order.
SPI_MASTER_bm | //SPI master.
SPI_MODE_0_gc; // SPI mode.
#ifdef U8G_HW_SPI_2X
SPIC.CTRL |= SPI_CLK2X_bm; /* double speed, issue 89 */
#endif
u8g->pin_list[U8G_PI_A0_STATE] = 0; /* inital RS state: command mode */
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_RESET:
u8g_SetPILevel(u8g, U8G_PI_RESET, arg_val);
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;
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable, note: the st7920 has an active high chip select */
u8g_SetPILevel(u8g, U8G_PI_CS, 0);
}
else
{
/* u8g_SetPILevel(u8g, U8G_PI_SCK, 0 ); */
/* enable */
u8g_SetPILevel(u8g, U8G_PI_CS, 1); /* CS = 1 (high active) */
}
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_com_atxmega_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], arg_val);
//u8g->pin_list[U8G_PI_A0_STATE] = 2;
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_atxmega_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], *ptr++);
//u8g->pin_list[U8G_PI_A0_STATE] = 2;
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_atxmega_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], u8g_pgm_read(ptr));
//u8g->pin_list[U8G_PI_A0_STATE] = 2;
ptr++;
arg_val--;
}
}
break;
}
return 1;
}
uint8_t u8g_com_arduino_st7920_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
u8g_com_arduino_assign_pin_output_high(u8g);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW);
DDRB |= _BV(3); /* D0, MOSI */
DDRB |= _BV(5); /* SCK */
DDRB |= _BV(2); /* slave select */
PORTB &= ~_BV(3); /* D0, MOSI = 0 */
PORTB &= ~_BV(5); /* SCK = 0 */
/*
SPR1 SPR0
0 0 fclk/4
0 1 fclk/16
1 0 fclk/64
1 1 fclk/128
*/
SPCR = 0;
/* 20 Dez 2012: set CPOL and CPHA to 1 !!! */
SPCR = (1<<SPE) | (1<<MSTR)|(0<<SPR1)|(0<<SPR0)|(1<<CPOL)|(1<<CPHA);
#ifdef U8G_HW_SPI_2X
SPSR = (1 << SPI2X); /* double speed, issue 89 */
#endif
u8g->pin_list[U8G_PI_A0_STATE] = 0; /* inital RS state: command mode */
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_RESET:
if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE )
u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val);
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable, note: the st7920 has an active high chip select */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW);
}
else
{
/* enable */
//u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, LOW);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH);
}
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_com_arduino_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], arg_val);
// u8g->pin_list[U8G_PI_A0_STATE] = 2;
//u8g_arduino_sw_spi_shift_out(u8g->pin_list[U8G_PI_MOSI], u8g->pin_list[U8G_PI_SCK], arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_arduino_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], *ptr++);
// u8g->pin_list[U8G_PI_A0_STATE] = 2;
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_arduino_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], u8g_pgm_read(ptr) );
// u8g->pin_list[U8G_PI_A0_STATE] = 2;
ptr++;
arg_val--;
}
}
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;
break;
}
return 1;
}
uint8_t u8g_com_arduino_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
//u8g_com_arduino_digital_write(u8g, U8G_PI_SCL, HIGH);
//u8g_com_arduino_digital_write(u8g, U8G_PI_SDA, HIGH);
//u8g->pin_list[U8G_PI_A0_STATE] = 0; /* inital RS state: unknown mode */
u8g_i2c_init(u8g->pin_list[U8G_PI_I2C_OPTION]);
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_RESET:
/* Currently disabled, but it could be enable. Previous restrictions have been removed */
/* u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val); */
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_arduino_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_arduino_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_arduino_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_arduino_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;
}
uint8_t u8g_com_arduino_std_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
u8g_com_arduino_assign_pin_output_high(u8g);
u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, LOW);
u8g_com_arduino_digital_write(u8g, U8G_PI_MOSI, LOW);
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_RESET:
if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE )
u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val);
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH);
}
else
{
/* enable */
u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, LOW);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW);
}
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_arduino_sw_spi_shift_out(u8g->pin_list[U8G_PI_MOSI], u8g->pin_list[U8G_PI_SCK], arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_arduino_sw_spi_shift_out(u8g->pin_list[U8G_PI_MOSI], u8g->pin_list[U8G_PI_SCK], *ptr++);
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_arduino_sw_spi_shift_out(u8g->pin_list[U8G_PI_MOSI], u8g->pin_list[U8G_PI_SCK], u8g_pgm_read(ptr));
ptr++;
arg_val--;
}
}
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
u8g_com_arduino_digital_write(u8g, U8G_PI_A0, arg_val);
break;
}
return 1;
}
uint8_t u8g_com_arduino_t6963_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
u8g->pin_list[U8G_PI_A0_STATE] = 0;
u8g_com_arduino_t6963_init(u8g);
/* setup the RW (equal to WR) pin as output and force it to high */
if ( u8g->pin_list[U8G_PI_WR] != U8G_PIN_NONE )
{
pinMode(u8g->pin_list[U8G_PI_WR], OUTPUT);
u8g_com_arduino_digital_write(u8g, U8G_PI_WR, HIGH);
}
/* set all pins (except WR pin) */
u8g_com_arduino_assign_pin_output_high(u8g);
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable, active low chip select */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH);
}
else
{
/* enable */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW);
}
break;
case U8G_COM_MSG_WRITE_BYTE:
if ( u8g->pin_list[U8G_PI_A0_STATE] == 0 )
{
u8g_com_arduino_t6963_write_data(u8g, arg_val);
}
else
{
u8g_com_arduino_t6963_write_cmd(u8g, arg_val);
}
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
u8g_com_arduino_t6963_write_cmd(u8g, 0x0b0); /* auto write */
while( arg_val > 0 )
{
if ( u8g_com_arduino_t6963_write_auto_data(u8g, *ptr++) == 0 )
break;
arg_val--;
}
u8g_com_arduino_t6963_write_cmd(u8g, 0x0b2); /* auto reset */
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
u8g_com_arduino_t6963_write_cmd(u8g, 0x0b0); /* auto write */
while( arg_val > 0 )
{
if ( u8g_com_arduino_t6963_write_auto_data(u8g, u8g_pgm_read(ptr)) == 0 )
break;
ptr++;
arg_val--;
}
u8g_com_arduino_t6963_write_cmd(u8g, 0x0b2); /* auto reset */
}
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 1) or data mode (arg_val = 0) */
u8g->pin_list[U8G_PI_A0_STATE] = arg_val;
//u8g_com_arduino_digital_write(u8g, U8G_PI_DI, arg_val);
break;
case U8G_COM_MSG_RESET:
if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE )
u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val);
break;
}
return 1;
}
uint8_t u8g_com_atxmega_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:
u8g_SetPIOutput(u8g, U8G_PI_CS);
u8g_SetPIOutput(u8g, U8G_PI_A0);
u8g_SetPIOutput(u8g, U8G_PI_RESET);
//U8G_ATOMIC_START();
PORTC.DIR |= PIN4_bm | PIN5_bm | PIN7_bm;
PORTC.DIR &= ~PIN6_bm;
//U8G_ATOMIC_END();
u8g_SetPILevel(u8g, U8G_PI_CS, 1);
SPIC.CTRL = 0;
SPIC.CTRL = SPI_PRESCALER_DIV4_gc | // SPI prescaler.
//SPI_CLK2X_bm | //SPI Clock double.
SPI_ENABLE_bm | //Enable SPI module.
//SPI_DORD_bm | //Data order.
SPI_MASTER_bm | //SPI master.
SPI_MODE_0_gc; // SPI mode.
#ifdef U8G_HW_SPI_2X
SPIC.CTRL |= SPI_CLK2X_bm; /* double speed, issue 89 */
#endif
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:
if ( arg_val == 0 )
{
/* disable */
u8g_SetPILevel(u8g, U8G_PI_CS, 1);
}
else
{
//PORTB &= ~_BV(5); /* SCK = 0 */
PORTC.OUT &= ~PIN7_bm;
/* enable */
u8g_SetPILevel(u8g, U8G_PI_CS, 0); /* CS = 0 (low active) */
}
break;
case U8G_COM_MSG_RESET:
u8g_SetPILevel(u8g, U8G_PI_RESET, arg_val);
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_atxmega_spi_out(arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_atxmega_spi_out(*ptr++);
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_atxmega_spi_out(u8g_pgm_read(ptr));
ptr++;
arg_val--;
}
}
break;
}
return 1;
}
/*
sequence := { direct_value | escape_sequence }
direct_value := 0..254
escape_sequence := value_255 | sequence_end | delay | adr | cs | not_used
value_255 := 255 255
sequence_end = 255 254
delay := 255 0..127
adr := 255 0x0e0 .. 0x0ef
cs := 255 0x0d0 .. 0x0df
not_used := 255 101..254
#define U8G_ESC_DLY(x) 255, ((x) & 0x7f)
#define U8G_ESC_CS(x) 255, (0xd0 | ((x)&0x0f))
#define U8G_ESC_ADR(x) 255, (0xe0 | ((x)&0x0f))
#define U8G_ESC_VCC(x) 255, (0xbe | ((x)&0x01))
#define U8G_ESC_END 255, 254
#define U8G_ESC_255 255, 255
#define U8G_ESC_RST(x) 255, (0xc0 | ((x)&0x0f))
*/
uint8_t u8g_WriteEscSeqP(u8g_t *u8g, u8g_dev_t *dev, const uint8_t *esc_seq)
{
uint8_t is_escape = 0;
uint8_t value;
for(;;)
{
value = u8g_pgm_read(esc_seq);
if ( is_escape == 0 )
{
if ( value != 255 )
{
if ( u8g_WriteByte(u8g, dev, value) == 0 )
return 0;
}
else
{
is_escape = 1;
}
}
else
{
if ( value == 255 )
{
if ( u8g_WriteByte(u8g, dev, value) == 0 )
return 0;
}
else if ( value == 254 )
{
break;
}
else if ( value >= 0x0f0 )
{
/* not yet used, do nothing */
}
else if ( value >= 0xe0 )
{
u8g_SetAddress(u8g, dev, value & 0x0f);
}
else if ( value >= 0xd0 )
{
u8g_SetChipSelect(u8g, dev, value & 0x0f);
}
else if ( value >= 0xc0 )
{
u8g_SetResetLow(u8g, dev);
value &= 0x0f;
value <<= 4;
value+=2;
u8g_Delay(value);
u8g_SetResetHigh(u8g, dev);
u8g_Delay(value);
}
else if ( value >= 0xbe )
{
/* not yet implemented */
/* u8g_SetVCC(u8g, dev, value & 0x01); */
}
else if ( value <= 127 )
{
u8g_Delay(value);
}
is_escape = 0;
}
esc_seq++;
}
return 1;
}
uint8_t u8g_com_atmega_st7920_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
u8g_SetPIOutput(u8g, U8G_PI_CS);
//u8g_SetPIOutput(u8g, U8G_PI_A0);
U8G_ATOMIC_START();
DDRB |= U8G_ATMEGA_HW_SPI_MOSI_PIN;
DDRB |= U8G_ATMEGA_HW_SPI_SCK_PIN;
DDRB |= U8G_ATMEGA_HW_SPI_SLAVE_SELECT_PIN;
PORTB &= ~U8G_ATMEGA_HW_SPI_MOSI_PIN;
PORTB &= ~U8G_ATMEGA_HW_SPI_SCK_PIN;
U8G_ATOMIC_END();
u8g_SetPILevel(u8g, U8G_PI_CS, 1);
/*
SPR1 SPR0
0 0 fclk/4
0 1 fclk/16
1 0 fclk/64
1 1 fclk/128
*/
SPCR = 0;
/* maybe set CPOL and CPHA to 1 */
/* 20 Dez 2012: did set CPOL and CPHA to 1 in Arduino variant! */
/* 24 Jan 2014: implemented, see also issue 221 */
SPCR = (1<<SPE) | (1<<MSTR)|(0<<SPR1)|(0<<SPR0)|(1<<CPOL)|(1<<CPHA);
#ifdef U8G_HW_SPI_2X
SPSR = (1 << SPI2X); /* double speed, issue 89 */
#endif
u8g->pin_list[U8G_PI_A0_STATE] = 0; /* inital RS state: command mode */
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_RESET:
u8g_SetPILevel(u8g, U8G_PI_RESET, arg_val);
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;
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable, note: the st7920 has an active high chip select */
u8g_SetPILevel(u8g, U8G_PI_CS, 0);
}
else
{
/* u8g_SetPILevel(u8g, U8G_PI_SCK, 0 ); */
/* enable */
u8g_SetPILevel(u8g, U8G_PI_CS, 1); /* CS = 1 (high active) */
}
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_com_atmega_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], arg_val);
//u8g->pin_list[U8G_PI_A0_STATE] = 2;
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_atmega_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], *ptr++);
//u8g->pin_list[U8G_PI_A0_STATE] = 2;
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_atmega_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], u8g_pgm_read(ptr));
//u8g->pin_list[U8G_PI_A0_STATE] = 2;
ptr++;
arg_val--;
}
}
break;
}
return 1;
}
/*
Find (with some speed optimization) and return a pointer to the glyph data structure
Also uncompress (format 1) and copy the content of the data structure to the u8g structure
*/
u8g_glyph_t u8g_GetGlyph(u8g_t *u8g, uint8_t requested_encoding)
{
uint8_t *p = (uint8_t *)(u8g->font);
uint8_t font_format = u8g_font_GetFormat(u8g->font);
uint8_t data_structure_size = u8g_font_GetFontGlyphStructureSize(u8g->font);
uint8_t start, end;
uint16_t pos;
uint8_t i;
uint8_t mask = 255;
if ( font_format == 1 )
mask = 15;
start = u8g_font_GetFontStartEncoding(u8g->font);
end = u8g_font_GetFontEndEncoding(u8g->font);
pos = u8g_font_GetEncoding97Pos(u8g->font);
if ( requested_encoding >= 97 && pos > 0 )
{
p+= pos;
start = 97;
}
else
{
pos = u8g_font_GetEncoding65Pos(u8g->font);
if ( requested_encoding >= 65 && pos > 0 )
{
p+= pos;
start = 65;
}
else
p += U8G_FONT_DATA_STRUCT_SIZE; /* skip font general information */
}
if ( requested_encoding > end )
{
u8g_FillEmptyGlyphCache(u8g);
return NULL; /* not found */
}
i = start;
if ( i <= end )
{
for(;;)
{
if ( u8g_pgm_read((u8g_pgm_uint8_t *)(p)) == 255 )
{
p += 1;
}
else
{
if ( i == requested_encoding )
{
u8g_CopyGlyphDataToCache(u8g, p);
return p;
}
p += u8g_pgm_read( ((u8g_pgm_uint8_t *)(p)) + 2 ) & mask;
p += data_structure_size;
}
if ( i == end )
break;
i++;
}
}
u8g_FillEmptyGlyphCache(u8g);
return NULL;
}
uint8_t u8g_com_arduino_parallel_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
/* setup the RW pin as output and force it to low */
if ( u8g->pin_list[U8G_PI_RW] != U8G_PIN_NONE )
{
pinMode(u8g->pin_list[U8G_PI_RW], OUTPUT);
u8g_com_arduino_digital_write(u8g, U8G_PI_RW, LOW);
}
/* set all pins (except RW pin) */
u8g_com_arduino_assign_pin_output_high(u8g);
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS1, HIGH);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS2, HIGH);
}
else if ( arg_val == 1 )
{
/* enable */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS1, LOW);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS2, HIGH);
}
else if ( arg_val == 2 )
{
/* enable */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS1, HIGH);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS2, LOW);
}
else
{
/* enable */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS1, LOW);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS2, LOW);
}
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_com_arduino_parallel_write(u8g, arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_arduino_parallel_write(u8g, *ptr++);
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_arduino_parallel_write(u8g, u8g_pgm_read(ptr));
ptr++;
arg_val--;
}
}
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
u8g_com_arduino_digital_write(u8g, U8G_PI_DI, arg_val);
break;
case U8G_COM_MSG_RESET:
if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE )
u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val);
break;
}
return 1;
}
uint8_t u8g_com_rx_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
/* Conditions: Channel not yet open. */
uint8_t chan = 0;
rspi_chnl_settings_t my_config;
rspi_cmd_baud_t my_setbaud_struct;
rspi_err_t rspi_result;
switch(msg)
{
case U8G_COM_MSG_INIT:
my_config.gpio_ssl = RSPI_IF_MODE_3WIRE;
my_config.master_slave_mode = RSPI_MS_MODE_MASTER;
my_config.bps_target = 1000000; // Bit rate in bits-per-second.
rspi_result = R_RSPI_Open(chan, &my_config, rspi_callback, &handle );
if (RSPI_SUCCESS != rspi_result)
{
while(1);
}
my_setbaud_struct.bps_target = 1000000;
rspi_result = R_RSPI_Control(handle, RSPI_CMD_SET_BAUD, &my_setbaud_struct);
if (RSPI_SUCCESS != rspi_result)
{
while(1);
}
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable, note: the st7920 has an active high chip select */
LCD_CS = 0;
}
else
{
/* enable */
LCD_CS = 1;
}
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_com_rx_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ:
u8g_com_rx_st7920_write_byte_hw_spi_seq(u8g, u8g->pin_list[U8G_PI_A0_STATE], (uint8_t *)arg_ptr, arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_rx_st7920_write_byte_hw_spi(u8g, u8g->pin_list[U8G_PI_A0_STATE], u8g_pgm_read(ptr) );
// u8g->pin_list[U8G_PI_A0_STATE] = 2;
ptr++;
arg_val--;
}
}
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;
break;
}
return 1;
}
uint8_t u8g_com_arduino_st7920_custom_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
u8g_com_arduino_assign_pin_output_high(u8g);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW);
// u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, LOW);
u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, HIGH);
u8g_com_arduino_digital_write(u8g, U8G_PI_MOSI, LOW);
u8g_com_arduino_init_shift_out(u8g->pin_list[U8G_PI_MOSI], u8g->pin_list[U8G_PI_SCK]);
u8g->pin_list[U8G_PI_A0_STATE] = 0; /* inital RS state: command mode */
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_RESET:
if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE )
u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val);
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable, note: the st7920 has an active high chip select */
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW);
}
else
{
/* enable */
//u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, HIGH);
u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH);
}
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_com_arduino_st7920_write_byte( u8g->pin_list[U8G_PI_A0_STATE], arg_val);
//u8g->pin_list[U8G_PI_A0_STATE] = 2;
//u8g_arduino_sw_spi_shift_out(u8g->pin_list[U8G_PI_MOSI], u8g->pin_list[U8G_PI_SCK], arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ:
u8g_com_arduino_st7920_write_byte_seq(u8g->pin_list[U8G_PI_A0_STATE], (uint8_t *)arg_ptr, arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_arduino_st7920_write_byte(u8g->pin_list[U8G_PI_A0_STATE], u8g_pgm_read(ptr) );
//u8g->pin_list[U8G_PI_A0_STATE] = 2;
ptr++;
arg_val--;
}
}
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;
break;
}
return 1;
}
uint8_t u8g_com_atmega_parallel_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
/* setup the RW pin as output and force it to low */
u8g_SetPIOutput(u8g, U8G_PI_RW);
u8g_SetPILevel(u8g, U8G_PI_RW, 0);
u8g_SetPIOutput(u8g, U8G_PI_D0);
u8g_SetPIOutput(u8g, U8G_PI_D1);
u8g_SetPIOutput(u8g, U8G_PI_D2);
u8g_SetPIOutput(u8g, U8G_PI_D3);
u8g_SetPIOutput(u8g, U8G_PI_D4);
u8g_SetPIOutput(u8g, U8G_PI_D5);
u8g_SetPIOutput(u8g, U8G_PI_D6);
u8g_SetPIOutput(u8g, U8G_PI_D7);
u8g_SetPIOutput(u8g, U8G_PI_EN);
u8g_SetPIOutput(u8g, U8G_PI_CS1);
u8g_SetPIOutput(u8g, U8G_PI_CS2);
u8g_SetPIOutput(u8g, U8G_PI_DI);
u8g_SetPILevel(u8g, U8G_PI_CS1, 1);
u8g_SetPILevel(u8g, U8G_PI_CS2, 1);
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_CHIP_SELECT:
if ( arg_val == 0 )
{
/* disable */
u8g_SetPILevel(u8g, U8G_PI_CS1, 1);
u8g_SetPILevel(u8g, U8G_PI_CS2, 1);
}
else if ( arg_val == 1 )
{
/* enable */
u8g_SetPILevel(u8g, U8G_PI_CS1, 0);
u8g_SetPILevel(u8g, U8G_PI_CS2, 1);
}
else if ( arg_val == 2 )
{
/* enable */
u8g_SetPILevel(u8g, U8G_PI_CS1, 1);
u8g_SetPILevel(u8g, U8G_PI_CS2, 0);
}
else
{
/* enable */
u8g_SetPILevel(u8g, U8G_PI_CS1, 0);
u8g_SetPILevel(u8g, U8G_PI_CS2, 0);
}
break;
case U8G_COM_MSG_WRITE_BYTE:
u8g_com_atmega_parallel_write(u8g, arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_atmega_parallel_write(u8g, *ptr++);
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
u8g_com_atmega_parallel_write(u8g, u8g_pgm_read(ptr));
ptr++;
arg_val--;
}
}
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
u8g_SetPILevel(u8g, U8G_PI_DI, arg_val);
break;
}
return 1;
}
