update keybrd_MCP23018 and PCA9655E_5_keybrd.ino for bb

examples/IOE_PCA9655E_development/PCA9655E_5_keybrd/PCA9655E_5_keybrd.ino

@@ -91,8 +91,6 @@ void setup()
 {
     delay(6000);
     Keyboard.print("PCA9655E_5_keybrd.ino ");
-
-    //Keyboard.begin();todo not needed ?? it's in DH mainSketch.cpp and keybrd_4c_split_keyboard_with_IOE.ino
     scanner_R.begin();
 }
 

examples/keybrd_MCP23017/keybrd_MCP23017.ino

@@ -0,0 +1,20 @@
+/* keybrd_MCP23017.ino
+
+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
+
+*/

examples/keybrd_MCP23018/keybrd_MCP23018.ino

@@ -9,12 +9,28 @@ This sketch:
 |-------|-------|-------| |-------|-------|-------|
 | **1** |   1   |   2   | | **1** |   3   |   4   |
 | **0** |   a   |   b   | | **0** |   c   |   d   |
+
+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 <Code_LEDLock.h>
 #include <Row.h>
 
 //left matrix
@@ -36,28 +52,14 @@ const uint8_t readPinCount = sizeof(readPins)/sizeof(*readPins);
 
 Scanner_uC scanner_L(LOW, readPins, readPinCount);
 
-/* =============== RIGHT SCANNER ===============
+// =============== RIGHT SCANNER ===============
-The right matrix is scanned by an I/O expander.
+const uint8_t IOE_ADDR = 0x20;                  //MCP23018 ADDR pin grounded
-The MCP23018 address is set by grounding or powering pins.
-*/
-const uint8_t IOE_ADDR = 0x20;                  //MCP23018 address pin grounded
 
-/*
-Normally all strobe pins are on one port, and all the read pins are on the other port.
-In this example, portB stobes the row while portA reads the colums.
-Port_MCP23018 constructor parameters are: deviceAddr, portNum, readPins.
-readPins is a bit pattern, where 0=output, 1=input.
-In portA, the first two pins are set to input for reading.
-"<<" (bit shift left) and "|" (OR) are bitwise operators.
-Pin numbers to be read are delimited by "|" and to the right of "1<<".
-*/
 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 =================
+// ================= RIGHT LED =================
-The LED_Port constructor parameters are a port and pin number that is connected to an LED.
-*/
 LED_Port LED_capsLck(portA, 1<<7);
 
 // =================== CODES ===================
@@ -71,19 +73,8 @@ Code_Sc s_2(KEY_2);
 Code_Sc s_3(KEY_3);
 Code_Sc s_4(KEY_4);
 
-Code_LEDLock o_capsLock(KEY_CAPS_LOCK, LED_capsLck);//was testing LED, restore s_4 when done
+// =================== ROWS ====================
-
+// ---------------- LEFT ROWS ------------------
-/* =================== ROWS ====================
-Left row names contain the letter 'L', while right row names conatain the letter 'R'.
-
-Row constructor parameters are: scanner, strobePin, ptrsKeys[], keyCount.
-strobePin has one of two formats:
- * if refScanner a Scanner_uC, then strobePin is an Arduino pin number connected to this row
- * otherwise strobePin is a bit pattern, 1 indicating an IC pin connected to the row
-*/
-/* ---------------- LEFT ROWS ------------------
-The left rows have a Scanner_uC and Arduino pin numbers to strobe.
-*/
 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);
@@ -92,10 +83,8 @@ 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 -----------------
+// ---------------- RIGHT ROWS -----------------
-The right rows have a Scanner_IOE and pin bits to strobe.
+Key* ptrsKeys_R0[] = { &s_3, &s_4 };
-*/
-Key* ptrsKeys_R0[] = { &s_3, &o_capsLock };
 const uint8_t KEY_COUNT_R0 = sizeof(ptrsKeys_R0)/sizeof(*ptrsKeys_R0);
 Row row_R0(scanner_R, 1<<0, ptrsKeys_R0, KEY_COUNT_R0);
 
@@ -106,7 +95,9 @@ Row row_R1(scanner_R, 1<<1, ptrsKeys_R1, KEY_COUNT_R1);
 // ################### MAIN ####################
 void setup()
 {
-    Keyboard.begin();
+    delay(6000);
+    Keyboard.print("keybrd_MCP23018.ino ");
+
     scanner_R.begin();
 }
 

src/Scanner_ShiftRegsRead.h

@@ -19,10 +19,12 @@ Example instantiation:
 
 In the above Row instantiation, argument 0 for "strobePin" is ignored because there is no strobe.
 
-There are three Scanner_ShiftRegsRead parameters.
+There are three Scanner_ShiftRegsRead-constructor parameters.
-1. "activeState" paramter is ignored, but should be active state HIGH or LOW for ScannerInterface.
+1. "activeState" paramter is ignored, but should be HIGH or LOW for documention.
+   activeState is required by ScannerInterface.
+   Actual activeState is determined by external pull-up or pull-down resistors described below.
 2. "slaveSelect" paramter can be any controller pin connected to shift register's SHIFT-LOAD pin.
-3. "byte_count" is the number of bytes to read from shift registers (1 to 4).
+3. "byte_count" is the number of bytes to read from shift registers (1, 2, 3, or 4).
    byte_count should cover all the row's keys: byte_count*8 >= row's keyCount
 
 Hardware setup: