mmdolze
a8d9504a3c
1. A bogus address calculation was done (spotted by G. Smith). 2. The displayID was added to the data escape character even if the connection type does not support multiple displays (spotted by G. Smith). 3. When calculation if data escape is necessary, the character 0xff could not be escaped. Changed an updates all connection types (M. Dolze).
82 lines
3.7 KiB
C
82 lines
3.7 KiB
C
/** \file server/drivers/hd44780-serial.h
|
|
* Contains configuration data for serial attached HD44780 displays supported
|
|
* by the \c hd44780 driver.
|
|
*/
|
|
|
|
#ifndef HD44780_SERIAL_H
|
|
#define HD44780_SERIAL_H
|
|
|
|
#define SERIALIF_NAME_LENGTH 20
|
|
#define DEFAULT_DEVICE "/dev/lcd"
|
|
|
|
/** Declares one configuration entry in the serial_interfaces table */
|
|
struct hd44780_SerialInterface {
|
|
int connectiontype; /**< Connection type from hd44780 config */
|
|
|
|
/** \name Instruction / data escape sequence
|
|
* Determines if escape characters have to be sent for instruction or
|
|
* data values. The instruction escape character is always sent, even
|
|
* if its value is 0x00. The data escape character is only sent it it
|
|
* is not NUL and data is within range set by data_escape_min and
|
|
* data_escape_max.
|
|
*@{*/
|
|
unsigned char instruction_escape; /**< Instruction escape character. */
|
|
unsigned char data_escape; /**< Data escape character. */
|
|
unsigned char data_escape_min; /**< Escaped data lower limit (inclusive) */
|
|
unsigned char data_escape_max; /**< Escaped data upper limit (inclusive) */
|
|
/**@}*/
|
|
|
|
unsigned int default_bitrate; /**< Bitrate device is set to by default */
|
|
char if_bits; /**< Initialize to 8 or 4 bit interface */
|
|
|
|
/** \name Keypad settings
|
|
*@{*/
|
|
char keypad; /**< Flag: keypad available */
|
|
unsigned char keypad_escape; /**< Keys are escaped with this character */
|
|
/**@}*/
|
|
|
|
/** \name Backlight options
|
|
* The backlight flag determines the type of backlight available.
|
|
* If the backlight is just switchable, the backlight_off or
|
|
* backlight_on characters are sent according to backlight state.
|
|
* If the backlight is adjustable, these characters must define a range
|
|
* of values that are understood as different brightness levels by
|
|
* the display. The 'brightness' and 'offbrightness' values from config
|
|
* are used according to the backlight state and mapped to this range.
|
|
*@{*/
|
|
char backlight; /**< Flag: backlight available
|
|
* 0 = none, 1 = switchable, 2 = adjustable */
|
|
unsigned char backlight_escape; /**< Escape character to send to indicate
|
|
* a backlight state change */
|
|
unsigned char backlight_off; /**< Character sent to set display off
|
|
* or minimum value if adjustable */
|
|
unsigned char backlight_on; /**< Character sent to set display on
|
|
* or maximum value if adjustable */
|
|
/**@}*/
|
|
|
|
/** Flag: Device has multiple controllers. If enabled, the displayID
|
|
* is added to data_escape and it is always sent. */
|
|
char multiple_displays;
|
|
unsigned char end_code; /**< Code to send on shutdown */
|
|
};
|
|
|
|
/**
|
|
* List of connectiontypes managed by this driver. If you change something
|
|
* here, remember also to change hd44780-drivers.h as well.
|
|
*/
|
|
static const struct hd44780_SerialInterface serial_interfaces[] = {
|
|
/* type instr data v ^ bitrate bits K esc B Besc Boff Bon Multi End */
|
|
{ HD44780_CT_PICANLCD, 0x11, 0x12, 0x00, 0x1F, 9600, 8, 0, 0x00, 0, 0, 0, 0, 0, 0 },
|
|
{ HD44780_CT_LCDSERIALIZER, 0xFE, 0, 0x00, 0x00, 9600, 8, 0, 0x00, 0, 0, 0, 0, 0, 0 },
|
|
{ HD44780_CT_LOS_PANEL, 0xFE, 0, 0x00, 0x00, 9600, 4, 1, 0xFE, 1, 0xFD, 0, 0xFF, 0, 0 },
|
|
{ HD44780_CT_VDR_LCD, 0xFE, 0, 0x00, 0x00, 9600, 4, 0, 0x00, 0, 0, 0, 0, 0, 0 },
|
|
{ HD44780_CT_VDR_WAKEUP, 0xC0, 0xC4, 0xC0, 0xCF, 9600, 4, 0, 0x00, 1, 0, 0xC9, 0xC8, 1, 0xCF },
|
|
{ HD44780_CT_PERTELIAN, 0xFE, 0, 0x00, 0x00, 9600, 8, 0, 0x00, 1, 0xFE, 0x02, 0x03, 0, 0 },
|
|
{ HD44780_CT_UNKNOWN, 0x00, 0, 0x00, 0x00, 0, 0, 0, 0, 0, 0x00, 0x00, 0x00, 0, 0 }
|
|
};
|
|
|
|
/* initialize this particular driver */
|
|
int hd_init_serial(Driver *drvthis);
|
|
|
|
#endif
|