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make delay optional

This commit is contained in:
devsaurus 2016-01-18 00:01:14 +01:00
parent 3a597f1698
commit 8db93bcabf
5 changed files with 27 additions and 12 deletions
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10
app/modules/u8g.c
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@ -820,10 +820,13 @@ static void lu8g_digital_write( u8g_t *u8g, uint8_t pin_index, uint8_t value )
platform_gpio_write( pin, value );
}
void u8g_Delay(uint16_t msec)
void u8g_Delay(u8g_t *u8g, uint16_t msec)
{
const uint16_t chunk = 50;
if (u8g->use_delay == 0)
return;
while (msec > chunk)
{
os_delay_us( chunk*1000 );
@ -994,6 +997,7 @@ static int lu8g_close_display( lua_State *L )
static int lu8g_ ## device( lua_State *L ) \
{ \
unsigned addr = luaL_checkinteger( L, 1 ); \
unsigned del = luaL_optinteger( L, 2, 0 ); \
\
if (addr == 0) \
return luaL_error( L, "i2c address required" ); \
@ -1001,6 +1005,7 @@ static int lu8g_close_display( lua_State *L )
lu8g_userdata_t *lud = (lu8g_userdata_t *) lua_newuserdata( L, sizeof( lu8g_userdata_t ) ); \
\
lud->u8g.i2c_addr = (uint8_t)addr; \
lud->u8g.use_delay = del > 0 ? 1 : 0; \
\
u8g_InitI2C( LU8G, &u8g_dev_ ## device, U8G_I2C_OPT_NONE); \
\
@ -1028,9 +1033,12 @@ U8G_DISPLAY_TABLE_I2C
if (dc == 0) \
return luaL_error( L, "D/C pin required" ); \
unsigned res = luaL_optinteger( L, 3, U8G_PIN_NONE ); \
unsigned del = luaL_optinteger( L, 4, 0 ); \
\
lu8g_userdata_t *lud = (lu8g_userdata_t *) lua_newuserdata( L, sizeof( lu8g_userdata_t ) ); \
\
lud->u8g.use_delay = del > 0 ? 1 : 0; \
\
u8g_InitHWSPI( LU8G, &u8g_dev_ ## device, cs, dc, res ); \
\
/* set its metatable */ \

3
app/u8glib/u8g.h
View File

@ -1163,6 +1163,7 @@ struct _u8g_t
u8g_box_t current_page; /* current box of the visible page */
uint8_t i2c_addr;
uint8_t use_delay;
};
#define u8g_GetFontAscent(u8g) ((u8g)->font_ref_ascent)
@ -1523,7 +1524,7 @@ const char *u8g_u16toa(uint16_t v, uint8_t d);
/* u8g_delay.c */
/* delay by the specified number of milliseconds */
void u8g_Delay(uint16_t val);
void u8g_Delay(u8g_t *u8g, uint16_t val);
/* delay by one microsecond */
void u8g_MicroDelay(void);

6
app/u8glib/u8g_com_api.c
View File

@ -151,9 +151,9 @@ uint8_t u8g_WriteEscSeqP(u8g_t *u8g, u8g_dev_t *dev, const uint8_t *esc_seq)
value &= 0x0f;
value <<= 4;
value+=2;
u8g_Delay(value);
u8g_Delay(u8g, value);
u8g_SetResetHigh(u8g, dev);
u8g_Delay(value);
u8g_Delay(u8g, value);
}
else if ( value >= 0xbe )
{
@ -162,7 +162,7 @@ uint8_t u8g_WriteEscSeqP(u8g_t *u8g, u8g_dev_t *dev, const uint8_t *esc_seq)
}
else if ( value <= 127 )
{
u8g_Delay(value);
u8g_Delay(u8g, value);
}
is_escape = 0;
}

6
app/u8glib/u8g_dev_a2_micro_printer.c
View File

@ -78,7 +78,7 @@ uint8_t u8g_dev_a2_micro_printer_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, voi
u8g_WriteByte(u8g, dev, *ptr);
ptr++;
}
u8g_Delay(LINE_DELAY);
u8g_Delay(u8g, LINE_DELAY);
y++;
}
@ -160,7 +160,7 @@ uint8_t u8g_dev_a2_micro_printer_double_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t m
u8g_WriteByte(u8g, dev, u8g_dev_expand4(*p2 & 15));
p2++;
}
u8g_Delay(LINE_DELAY);
u8g_Delay(u8g, LINE_DELAY);
p2 = ptr;
for( j = 0; j < pb->width/8; j++ )
{
@ -168,7 +168,7 @@ uint8_t u8g_dev_a2_micro_printer_double_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t m
u8g_WriteByte(u8g, dev, u8g_dev_expand4(*p2 & 15));
p2++;
}
u8g_Delay(LINE_DELAY);
u8g_Delay(u8g, LINE_DELAY);
ptr += pb->width/8;
y++;
}

14
docs/en/modules/u8g.md
View File

@ -100,6 +100,8 @@ In contrast to the source code based inclusion of XBMs into u8glib, it's require
## I²C Display Drivers
Initialize a display via I²C.
The init sequence would insert delays to match the display specs. These can destabilize the overall system if wifi service is blocked for too long. It is therefore advisable to disable such delays unless the specific use case can exclude wifi traffic while initializing the display driver.
- `u8g.sh1106_128x64_i2c()`
- `u8g.ssd1306_128x64_i2c()`
- `u8g.ssd1306_64x48_i2c()`
@ -109,10 +111,11 @@ Initialize a display via I²C.
- `u8g.uc1611_dogxl240_i2c()`
####Syntax
`u8g.ssd1306_128x64_i2c(address)`
`u8g.ssd1306_128x64_i2c(address[, use_delay])`
####Parameters
`address` I²C slave address of display
- `address` I²C slave address of display
- `use_delay` '1': use delays in init sequence, '0' if omitted
####Returns
u8g display object
@ -133,6 +136,8 @@ disp = u8g.ssd1306_128x64_i2c(sla)
## SPI Display Drivers
Initialize a display via Hardware SPI.
The init sequence would insert delays to match the display specs. These can destabilize the overall system if wifi service is blocked for too long. It is therefore advisable to disable such delays unless the specific use case can exclude wifi traffic while initializing the display driver.
- `u8g.ld7032_60x32_hw_spi()`
- `u8g.pcd8544_84x48_hw_spi()`
- `u8g.pcf8812_96x65_hw_spi()`
@ -169,12 +174,13 @@ Initialize a display via Hardware SPI.
- `u8g.uc1701_mini12864_hw_spi()`
#### Syntax
`u8g.ssd1306_128x64_spi(cs, dc[, res])`
`u8g.ssd1306_128x64_spi(cs, dc[, res[, use_delay]])`
#### Parameters
- `cs` GPIO pin for /CS
- `dc` GPIO pin for DC
- `res` GPIO pin for /RES (optional)
- `res` GPIO pin for /RES, none if omitted
- `use_delay` '1': use delays in init sequence, '0' if omitted
#### Returns
u8g display object