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- /* keybrd_MCP23017.ino
-
- This sketch:
- is a simple 1-layer keyboard
- runs on two matrices of a breadboard keyboard
- runs on both MCP23017 and MCP23018 IOEs (LED on/off will be reversed on MCP23017)
-
- Controller I/O expander
- | Left | **0** | **1** | | Right | **0** | **1** |
- |-------|-------|-------| |-------|-------|-------|
- | **1** | 1 | 2 | | **1** | 3 | 4 |
- | **0** | a | b | | **0** | fn | z 9 |
-
- MCP23017 pin assignments
- DESTINATION PIN PIN_NUMBER PIN DESTINATION
- row0 GPB0 1 28 GPA7
- row1 GPB1 2 27 GPA6
- GPB2 3 26 GPA5
- GPB3 4 25 GPA4
- GPB4 5 24 GPA3
- GPB5 6 23 GPA2
- GPB6 7 22 GPA1 col1
- GPB7 8 21 GPA0 col0
- LC 3.3V VDD 9 20 INTA
- GND VSS 10 19 INTB
- NC 11 18 /RESET VDD
- LC 19 SCL 12 17 A2 GND
- LC 18 SDA 13 16 A1 GND
- NC 14 15 A0 GND
-
- MCP23018 pin assignments
- DESTINATION PIN PIN_NUMBER PIN DESTINATION
- GND VSS 1 28 NC
- NC 2 27 GPA7
- row0 GPB0 3 26 GPA6
- row1 GPB1 4 25 GPA5
- GPB2 5 24 GPA4
- GPB4 7 22 GPA2
- GPB5 8 21 GPA1 col1
- GPB6 9 20 GPA0 col0
- GPB7 10 19 INTA
- LC 3.3V VCC 11 18 INTB
- LC 19 SCL 12 17 NC
- LC 18 SDA 13 16 /RESET VCC
- NC 14 15 ADDR GND
-
- */
- // ################## GLOBAL ###################
- // ================= INCLUDES ==================
- #include <ScanDelay.h>
- #include <Code_Sc.h>
- #include <Row.h>
-
- #include <Code_LayerHold.h>
- #include <Key_LayeredKeys.h>
- #include <LayerState_LED.h>
- #include <LED_PortOpenDrain.h>
-
- //left matrix
- #include <Scanner_uC.h>
-
- //right matrix
- #include <Port_MCP23018.h>
- #include <Scanner_IOE.h>
-
- // ============ SPEED CONFIGURATION ============
- ScanDelay scanDelay(9000);
-
- /* ================ LEFT SCANNER ===============
- Left matrix rows work the same as the ones in keybrd_2_single-layer.ino
- */
- uint8_t readPins[] = {14, 15};
- const uint8_t readPinCount = sizeof(readPins)/sizeof(*readPins);
-
- Scanner_uC scanner_L(LOW, readPins, readPinCount);
-
- // =============== RIGHT SCANNER ===============
- const uint8_t IOE_ADDR = 0x20; //MCP23018 ADDR pin grounded
-
- Port_MCP23018 portA(IOE_ADDR, 0, 1<<0 | 1<<1 ); //read pins 0, 1
- Port_MCP23018 portB(IOE_ADDR, 1, 0);
- Scanner_IOE scanner_R(LOW, portB, portA);
-
- // ================= RIGHT LED =================
- LED_PortOpenDrain LED_normal(portA, 1<<2); //LED on/off will be reversed on MCP23017
- LED_PortOpenDrain LED_fn(portB, 1<<2); // because it's not open drain
-
- // =================== CODES ===================
- // ---------------- LAYER CODES ----------------
- enum layerIds { NORMAL, FN };
-
- LEDInterface* prtsLayerLEDs[] = { &LED_normal, &LED_fn }; //array index matches enum layerIds
- LayerState_LED layerState(prtsLayerLEDs);
-
- Code_LayerHold l_fn(FN, layerState);
-
- // ---------------- SCAN CODES -----------------
- Code_Sc s_a(KEY_A);
- Code_Sc s_b(KEY_B);
- Code_Sc s_z(KEY_Z);
-
- Code_Sc s_1(KEY_1);
- Code_Sc s_2(KEY_2);
- Code_Sc s_3(KEY_3);
- Code_Sc s_4(KEY_4);
- Code_Sc s_9(KEY_9);
-
- // =================== KEYS ====================
- Key* const ptrsKeys_z9[] = { &s_z, &s_9 };
- Key_LayeredKeys k_z9(ptrsKeys_z9);
-
- LayerStateInterface& Key_LayeredKeys::refLayerState = layerState;
-
- // =================== ROWS ====================
- // ---------------- LEFT ROWS ------------------
- Key* ptrsKeys_L0[] = { &s_1, &s_2 };
- const uint8_t KEY_COUNT_L0 = sizeof(ptrsKeys_L0)/sizeof(*ptrsKeys_L0);
- Row row_L0(scanner_L, 0, ptrsKeys_L0, KEY_COUNT_L0);
-
- Key* ptrsKeys_L1[] = { &s_a, &s_b };
- const uint8_t KEY_COUNT_L1 = sizeof(ptrsKeys_L1)/sizeof(*ptrsKeys_L1);
- Row row_L1(scanner_L, 1, ptrsKeys_L1, KEY_COUNT_L1);
-
- // ---------------- RIGHT ROWS -----------------
- Key* ptrsKeys_R0[] = { &s_3, &s_4 };
- const uint8_t KEY_COUNT_R0 = sizeof(ptrsKeys_R0)/sizeof(*ptrsKeys_R0);
- Row row_R0(scanner_R, 1<<0, ptrsKeys_R0, KEY_COUNT_R0);
-
- Key* ptrsKeys_R1[] = { &l_fn, &k_z9 };
- const uint8_t KEY_COUNT_R1 = sizeof(ptrsKeys_R1)/sizeof(*ptrsKeys_R1);
- Row row_R1(scanner_R, 1<<1, ptrsKeys_R1, KEY_COUNT_R1);
-
- // ################### MAIN ####################
- void setup()
- {
- delay(6000);
- Keyboard.print("keybrd_MCP23017.ino ");
-
- scanner_R.begin();
- layerState.begin();
- }
-
- void loop()
- {
- //left matrix
- row_L0.process();
- row_L1.process();
-
- //right matrix
- row_R0.process();
- row_R1.process();
-
- scanDelay.delay();
- //debug.printScansPerSecond();
- //debug.printMicrosecondsPerScan();
- }
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