35 righe
1.3 KiB
C
35 righe
1.3 KiB
C
#ifndef CONFIG_KEYBRD_H
|
|
#define CONFIG_KEYBRD_H
|
|
#include <inttypes.h>
|
|
|
|
/* The maximum number of pins scanned by RowScanner depends on size of read_pins_t.
|
|
By default, read_pins_t is set to uint32_t.
|
|
If your 8-bit AVR (Teensy 2) is running low on memory, using a smaller type saves SRAM.
|
|
Using smaller types on a 32-bit uC (Teensy LC) would accomplish nothing.
|
|
|
|
read_pins_t is used in:
|
|
Row bit patterns
|
|
ScannerInterface::scan()
|
|
Scanner_ShiftRegsPISO::scan()
|
|
Scanner_uC::scan()
|
|
DebouncerInterface::debounce()
|
|
Debouncer_Samples::debounce()
|
|
|
|
Use a read_pins_t size that covers all read pins of all Scanner objects i.e.
|
|
For Scanner_uC: read_pins_t bits >= Scanner_uC::readPinCount
|
|
For Scanner_ShiftRegsPISO: read_pins_t bits >= Scanner_ShiftRegsPISO::byte_count * 8
|
|
(For Scanner_IOE: I/O expanders are assumed to have 8 bits per port or less)
|
|
*/
|
|
//typedef uint8_t read_pins_t;
|
|
//typedef uint16_t read_pins_t;
|
|
typedef uint32_t read_pins_t;
|
|
|
|
/* SAMPLE_COUNT_MACRO is used in Debouncer_Samples.h
|
|
SAMPLE_COUNT_MACRO = 4 is very reliable for a keyboard.
|
|
Split keyboards with a long connecting wire or in environment with
|
|
strong electromagnetic interference (EMI) may need a larger SAMPLE_COUNT_MACRO for reliability.
|
|
*/
|
|
#define SAMPLE_COUNT_MACRO 4 //number of consecutive equal bits needed to change a debounced bit
|
|
|
|
#endif
|