158 lines
4.7 KiB
C++
158 lines
4.7 KiB
C++
/* keybrd_MCP23017.ino
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This sketch:
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is a simple 1-layer keyboard
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runs on two matrices of a breadboard keyboard
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runs on both MCP23017 and MCP23018 IOEs (LED on/off will be reversed on MCP23017)
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Controller I/O expander
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| Left | **0** | **1** | | Right | **0** | **1** |
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|-------|-------|-------| |-------|-------|-------|
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| **1** | 1 | 2 | | **1** | 3 | 4 |
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| **0** | a | b | | **0** | fn | z 9 |
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MCP23017 pin assignments
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DESTINATION PIN PIN_NUMBER PIN DESTINATION
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row0 GPB0 1 28 GPA7
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row1 GPB1 2 27 GPA6
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GPB2 3 26 GPA5
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GPB3 4 25 GPA4
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GPB4 5 24 GPA3
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GPB5 6 23 GPA2
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GPB6 7 22 GPA1 col1
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GPB7 8 21 GPA0 col0
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LC 3.3V VDD 9 20 INTA
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GND VSS 10 19 INTB
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NC 11 18 /RESET VDD
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LC 19 SCL 12 17 A2 GND
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LC 18 SDA 13 16 A1 GND
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NC 14 15 A0 GND
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MCP23018 pin assignments
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DESTINATION PIN PIN_NUMBER PIN DESTINATION
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GND VSS 1 28 NC
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NC 2 27 GPA7
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row0 GPB0 3 26 GPA6
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row1 GPB1 4 25 GPA5
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GPB2 5 24 GPA4
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GPB4 7 22 GPA2
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GPB5 8 21 GPA1 col1
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GPB6 9 20 GPA0 col0
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GPB7 10 19 INTA
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LC 3.3V VCC 11 18 INTB
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LC 19 SCL 12 17 NC
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LC 18 SDA 13 16 /RESET VCC
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NC 14 15 ADDR GND
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*/
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// ################## GLOBAL ###################
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// ================= INCLUDES ==================
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#include <ScanDelay.h>
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#include <Code_Sc.h>
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#include <Row.h>
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#include <Code_LayerHold.h>
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#include <Key_LayeredKeys.h>
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#include <LayerState_LED.h>
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#include <LED_PortOpenDrain.h>
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//left matrix
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#include <Scanner_uC.h>
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//right matrix
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#include <Port_MCP23017.h>
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//#include <Port_MCP23018.h>
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#include <Scanner_IOE.h>
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// ============ SPEED CONFIGURATION ============
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ScanDelay scanDelay(9000);
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/* ================ LEFT SCANNER ===============
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Left matrix rows work the same as the ones in keybrd_2_single-layer.ino
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*/
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uint8_t readPins[] = {14, 15};
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const uint8_t readPinCount = sizeof(readPins)/sizeof(*readPins);
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Scanner_uC scanner_L(LOW, readPins, readPinCount);
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// =============== RIGHT SCANNER ===============
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const uint8_t IOE_ADDR = 0x20; //MCP23018 ADDR pin grounded
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Port_MCP23017 portA(IOE_ADDR, 0, 1<<0 | 1<<1 ); //read pins 0, 1
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Port_MCP23017 portB(IOE_ADDR, 1, 0);
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Scanner_IOE scanner_R(LOW, portB, portA);
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// ================= RIGHT LED =================
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LED_PortOpenDrain LED_normal(portA, 1<<2); //LED on/off will be reversed on MCP23017
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LED_PortOpenDrain LED_fn(portB, 1<<2); // because it's not open drain
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// =================== CODES ===================
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// ---------------- LAYER CODES ----------------
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enum layerIds { NORMAL, FN };
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LEDInterface* prtsLayerLEDs[] = { &LED_normal, &LED_fn }; //array index matches enum layerIds
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LayerState_LED layerState(prtsLayerLEDs);
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Code_LayerHold l_fn(FN, layerState);
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// ---------------- SCAN CODES -----------------
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Code_Sc s_a(KEY_A);
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Code_Sc s_b(KEY_B);
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Code_Sc s_z(KEY_Z);
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Code_Sc s_1(KEY_1);
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Code_Sc s_2(KEY_2);
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Code_Sc s_3(KEY_3);
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Code_Sc s_4(KEY_4);
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Code_Sc s_9(KEY_9);
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// =================== KEYS ====================
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Key* const ptrsKeys_z9[] = { &s_z, &s_9 };
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Key_LayeredKeys k_z9(ptrsKeys_z9);
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LayerStateInterface& Key_LayeredKeys::refLayerState = layerState;
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// =================== ROWS ====================
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// ---------------- LEFT ROWS ------------------
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Key* ptrsKeys_L0[] = { &s_1, &s_2 };
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const uint8_t KEY_COUNT_L0 = sizeof(ptrsKeys_L0)/sizeof(*ptrsKeys_L0);
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Row row_L0(scanner_L, 0, ptrsKeys_L0, KEY_COUNT_L0);
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Key* ptrsKeys_L1[] = { &s_a, &s_b };
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const uint8_t KEY_COUNT_L1 = sizeof(ptrsKeys_L1)/sizeof(*ptrsKeys_L1);
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Row row_L1(scanner_L, 1, ptrsKeys_L1, KEY_COUNT_L1);
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// ---------------- RIGHT ROWS -----------------
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Key* ptrsKeys_R0[] = { &s_3, &s_4 };
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const uint8_t KEY_COUNT_R0 = sizeof(ptrsKeys_R0)/sizeof(*ptrsKeys_R0);
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Row row_R0(scanner_R, 1<<0, ptrsKeys_R0, KEY_COUNT_R0);
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Key* ptrsKeys_R1[] = { &l_fn, &k_z9 };
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const uint8_t KEY_COUNT_R1 = sizeof(ptrsKeys_R1)/sizeof(*ptrsKeys_R1);
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Row row_R1(scanner_R, 1<<1, ptrsKeys_R1, KEY_COUNT_R1);
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// ################### MAIN ####################
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void setup()
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{
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delay(6000);
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Keyboard.print("keybrd_MCP23017.ino ");
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scanner_R.begin();
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layerState.begin();
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}
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void loop()
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{
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//left matrix
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row_L0.process();
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row_L1.process();
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//right matrix
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row_R0.process();
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row_R1.process();
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scanDelay.delay();
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//debug.printScansPerSecond();
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//debug.printMicrosecondsPerScan();
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}
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