GCL_PIFaceCaD (GVL)¶

InOut:

Scope	Name	Type	Initial	Comment
Constant	IODIRA	`USINT`	16#0	I/O direction A
	IODIRB	`USINT`	16#1	I/O direction B
	IPOLA	`USINT`	16#2	I/O polarity A
	IPOLB	`USINT`	16#3	I/O polarity B
	GPINTENA	`USINT`	16#4	interupt enable A
	GPINTENB	`USINT`	16#5	interupt enable B
	DEFVALA	`USINT`	16#6	register default value A (interupts)
	DEFVALB	`USINT`	16#7	register default value B (interupts)
	INTCONA	`USINT`	16#8	interupt control A
	INTCONB	`USINT`	16#9	interupt control B
	IOCON	`USINT`	16#A	I/O config (also : USINT := 16#0B)
	GPPUA	`USINT`	16#C	port A pullups
	GPPUB	`USINT`	16#D	port B pullups
	INTFA	`USINT`	16#E	interupt flag A (where the interupt came from)
	INTFB	`USINT`	16#F	interupt flag B
	INTCAPA	`USINT`	16#10	interupt capture A (value at interupt is saved here)
	INTCAPB	`USINT`	16#11	interupt capture B
	GPIOA	`USINT`	16#12	port A
	GPIOB	`USINT`	16#13	port B
	OLATA	`USINT`	16#14	output latch A
	OLATB	`USINT`	16#15	output latch B
	BANK_OFF	`USINT`	16#0	addressing mode
	BANK_ON	`USINT`	16#80
	INT_MIRROR_ON	`USINT`	16#40	interupt mirror (INTa\|INTb)
	INT_MIRROR_OFF	`USINT`	16#0
	SEQOP_OFF	`USINT`	16#20	incrementing address pointer
	SEQOP_ON	`USINT`	16#0
	DISSLW_ON	`USINT`	16#10	slew rate
	DISSLW_OFF	`USINT`	16#0
	HAEN_ON	`USINT`	16#8	hardware addressing
	HAEN_OFF	`USINT`	16#0
	ODR_ON	`USINT`	16#4	open drain for interupts
	ODR_OFF	`USINT`	16#0
	INTPOL_HIGH	`USINT`	16#2	interupt polarity
	INTPOL_LOW	`USINT`	16#0
	DELAY_PULSE_NS	`UDINT`	1000	1us
	DELAY_SETTLE_NS	`UDINT`	40000	40us
	DELAY_CLEAR_NS	`UDINT`	2600000	2.6ms
	DELAY_SETUP_0_NS	`UDINT`	15000000	15ms
	DELAY_SETUP_1_NS	`UDINT`	5000000	5ms
	DELAY_SETUP_2_NS	`UDINT`	1000000	1ms
	PIN_D4	`USINT`	0	mcp23s17 GPIOB to HD44780 pin map
	PIN_D5	`USINT`	1
	PIN_D6	`USINT`	2
	PIN_D7	`USINT`	3
	PIN_ENABLE	`USINT`	4
	PIN_RW	`USINT`	5
	PIN_RS	`USINT`	6
	PIN_BACKLIGHT	`USINT`	7
	LCD_CLEARDISPLAY	`USINT`	16#1	commands
	LCD_RETURNHOME	`USINT`	16#2
	LCD_ENTRYMODESET	`USINT`	16#4
	LCD_DISPLAYCONTROL	`USINT`	16#8
	LCD_CURSORSHIFT	`USINT`	16#10
	LCD_FUNCTIONSET	`USINT`	16#20
	LCD_SETCGRAMADDR	`USINT`	16#40
	LCD_SETDDRAMADDR	`USINT`	16#80
	LCD_NEWLINE	`USINT`	16#C0
	LCD_ENTRYRIGHT	`USINT`	16#0	flags for display entry mode
	LCD_ENTRYLEFT	`USINT`	16#2
	LCD_ENTRYSHIFTINCREMENT	`USINT`	16#1
	LCD_ENTRYSHIFTDECREMENT	`USINT`	16#0
	LCD_DISPLAYON	`USINT`	16#4	flags for display on/off control
	LCD_DISPLAYOFF	`USINT`	16#0
LCD_CURSORON	`USINT`	16#2
LCD_CURSOROFF	`USINT`	16#0
LCD_BLINKON	`USINT`	16#1
LCD_BLINKOFF	`USINT`	16#0
LCD_DISPLAYMOVE	`USINT`	16#8	flags for display/cursor shift
LCD_CURSORMOVE	`USINT`	16#0
LCD_MOVERIGHT	`USINT`	16#4
LCD_MOVELEFT	`USINT`	16#0
LCD_8BITMODE	`USINT`	16#10	flags for function set
LCD_4BITMODE	`USINT`	16#0
LCD_2LINE	`USINT`	16#8
LCD_1LINE	`USINT`	16#0
LCD_5X10DOTS	`USINT`	16#4
LCD_5X8DOTS	`USINT`	16#0
LCD_MAX_LINES	`USINT`	2
LCD_WIDTH	`USINT`	16
LCD_RAM_WIDTH	`USINT`	80	RAM is 80 wide, split over two lines
ROW_OFFSETS	ARRAY [0..1] OF BYTE	[0, 16#40]
SWITCH_PORT	`USINT`	GPIOA
LCD_PORT	`USINT`	GPIOB