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move ROW_END and pinMode() to constructor

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wolfv6 2016-07-02 04:41:02 -06:00
parent 6651a50ef2
commit fb38aa95a9
3 changed files with 16 additions and 10 deletions
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5
examples/keybrd_shift_register/keybrd_shift_register.ino
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@ -126,7 +126,7 @@ const uint8_t LED_PIN = 16; //indicates wait
//sometimes OS takes 6 seconds to recongnize keyboard, LED blinks from the begining //sometimes OS takes 6 seconds to recongnize keyboard, LED blinks from the begining
void wait() void wait()
{ {
for (uint8_t count = 0; count < 6; count++) for (uint8_t count = 0; count < 7; count++)
{ {
//print count //print count
Keyboard.print(count); Keyboard.print(count);
@ -144,11 +144,12 @@ void setup()
{ {
pinMode (LED_PIN, OUTPUT); pinMode (LED_PIN, OUTPUT);
Keyboard.begin(); Keyboard.begin();
wait();
SPI.begin(); SPI.begin();
row_R0.begin(); row_R0.begin();
row_R1.begin(); row_R1.begin();
wait();
Keyboard.print(F("keybrd_shift_reg.ino ")); Keyboard.print(F("keybrd_shift_reg.ino "));
debug.print_free_RAM(); debug.print_free_RAM();
} }

16
src/RowScanner_SPIShiftRegisters.cpp
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@ -1,12 +1,17 @@
#include "RowScanner_SPIShiftRegisters.h" #include "RowScanner_SPIShiftRegisters.h"
//constructor
RowScanner_SPIShiftRegisters::RowScanner_SPIShiftRegisters(const uint8_t STROBE_PIN, uint8_t KEY_COUNT)
: STROBE_PIN(STROBE_PIN), ROW_END(1 << KEY_COUNT), BYTE_COUNT(ceil (float(KEY_COUNT)/8))
{
//configure controller to communicate with shift register matrix
pinMode(STROBE_PIN, OUTPUT);
pinMode(SHIFT_LOAD, OUTPUT);
}
void RowScanner_SPIShiftRegisters::begin() void RowScanner_SPIShiftRegisters::begin()
{ {
//configure row
pinMode(STROBE_PIN, OUTPUT);
//initialize shift register's shift/load pin //initialize shift register's shift/load pin
pinMode(SHIFT_LOAD, OUTPUT);
digitalWrite(SHIFT_LOAD, HIGH); digitalWrite(SHIFT_LOAD, HIGH);
} }
@ -29,7 +34,8 @@ read_pins_t RowScanner_SPIShiftRegisters::scan(read_pins_mask_t& rowEnd)
//strobe row off //strobe row off
digitalWrite(STROBE_PIN, LOW); digitalWrite(STROBE_PIN, LOW);
rowEnd = 1 << KEY_COUNT; rowEnd = ROW_END;
//rowEnd = 1 << 8;
//clear unpowered pins (for testing bb) todo //clear unpowered pins (for testing bb) todo
rowState &= 0b01010001000100010001000100010001; //also 31st key rowState &= 0b01010001000100010001000100010001; //also 31st key

5
src/RowScanner_SPIShiftRegisters.h
View File

@ -33,11 +33,10 @@ class RowScanner_SPIShiftRegisters : public RowScannerInterface
//todo static const bool ACTIVE_HIGH; //logic level of strobe pin: 0=activeLow, 1=activeHigh //todo static const bool ACTIVE_HIGH; //logic level of strobe pin: 0=activeLow, 1=activeHigh
static const uint8_t SHIFT_LOAD; //controller's pin number that is connected to shift register's SHIFT_LOAD pin static const uint8_t SHIFT_LOAD; //controller's pin number that is connected to shift register's SHIFT_LOAD pin
const uint8_t STROBE_PIN; //Arduino pin number connected to this row const uint8_t STROBE_PIN; //Arduino pin number connected to this row
const uint8_t KEY_COUNT; //number of keys in row const read_pins_mask_t ROW_END; //number of keys in row + 1
const uint8_t BYTE_COUNT; //number of bytes to read from shift registers const uint8_t BYTE_COUNT; //number of bytes to read from shift registers
public: public:
RowScanner_SPIShiftRegisters(const uint8_t STROBE_PIN, uint8_t KEY_COUNT) RowScanner_SPIShiftRegisters(const uint8_t STROBE_PIN, uint8_t KEY_COUNT);
: STROBE_PIN(STROBE_PIN), KEY_COUNT(KEY_COUNT), BYTE_COUNT(ceil (float(KEY_COUNT)/8)) {}
virtual read_pins_t scan(read_pins_mask_t& rowEnd); virtual read_pins_t scan(read_pins_mask_t& rowEnd);
void begin(); void begin();
}; };