wolfv6
8 年前
+ 3
- 2
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 | |||
| void wait() | |||
| { | |||
| for (uint8_t count = 0; count < 6; count++) | |||
| for (uint8_t count = 0; count < 7; count++) | |||
| { | |||
| //print count | |||
| Keyboard.print(count); | |||
| @@ -144,11 +144,12 @@ void setup() | |||
| { | |||
| pinMode (LED_PIN, OUTPUT); | |||
| Keyboard.begin(); | |||
| wait(); | |||
| SPI.begin(); | |||
| row_R0.begin(); | |||
| row_R1.begin(); | |||
| wait(); | |||
| Keyboard.print(F("keybrd_shift_reg.ino ")); | |||
| debug.print_free_RAM(); | |||
| } | |||
+ 10
- 4
src/RowScanner_SPIShiftRegisters.cpp
查看文件
| @@ -1,12 +1,17 @@ | |||
| #include "RowScanner_SPIShiftRegisters.h" | |||
| void RowScanner_SPIShiftRegisters::begin() | |||
| //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 row | |||
| //configure controller to communicate with shift register matrix | |||
| pinMode(STROBE_PIN, OUTPUT); | |||
| pinMode(SHIFT_LOAD, OUTPUT); | |||
| } | |||
| void RowScanner_SPIShiftRegisters::begin() | |||
| { | |||
| //initialize shift register's shift/load pin | |||
| pinMode(SHIFT_LOAD, OUTPUT); | |||
| digitalWrite(SHIFT_LOAD, HIGH); | |||
| } | |||
| @@ -29,7 +34,8 @@ read_pins_t RowScanner_SPIShiftRegisters::scan(read_pins_mask_t& rowEnd) | |||
| //strobe row off | |||
| digitalWrite(STROBE_PIN, LOW); | |||
| rowEnd = 1 << KEY_COUNT; | |||
| rowEnd = ROW_END; | |||
| //rowEnd = 1 << 8; | |||
| //clear unpowered pins (for testing bb) todo | |||
| rowState &= 0b01010001000100010001000100010001; //also 31st key | |||
+ 2
- 3
src/RowScanner_SPIShiftRegisters.h
查看文件
| @@ -33,11 +33,10 @@ class RowScanner_SPIShiftRegisters : public RowScannerInterface | |||
| //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 | |||
| 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 | |||
| public: | |||
| 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)) {} | |||
| RowScanner_SPIShiftRegisters(const uint8_t STROBE_PIN, uint8_t KEY_COUNT); | |||
| virtual read_pins_t scan(read_pins_mask_t& rowEnd); | |||
| void begin(); | |||
| }; | |||