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