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add strobe off to RowScanner_SPIShiftRegisters::scan(), add keybrd/examples/keybrd_shift_register

tags/v0.5.0
wolfv6 7 years ago
parent
1eb09df387
commit
f792c710bb
5 changed files with 334 additions and 12 deletions
Split View Show Diff Stats
  1. 161
    0
      examples/keybrd_shift_register/keybrd_shift_reg.ino
  2. 136
    0
      examples/keybrd_shift_register/keybrd_shift_reg_works1.no
  3. 16
    7
      src/RowScanner_SPIShiftRegisters.cpp
  4. 19
    3
      src/RowScanner_SPIShiftRegisters.h
  5. 2
    2
      src/Row_ShiftRegisters.h

+ 161
- 0
examples/keybrd_shift_register/keybrd_shift_reg.ino View File

@@ -0,0 +1,161 @@
/* keybrd_shift_reg.ino
this works on Teensy LC 1*bb, active low and active high

| Layout | **0** | **1** |
|:------:|-------|-------|
| **0** | a | b |
| **1** | c | d |
*/
// ################## GLOBAL ###################
// ================= INCLUDES ==================
#include <Debug.h>

//IOE Ports
#include "IOExpanderPort.h"
#include <RowPort_MCP23018.h>
#include <ColPort_MCP23018.h>

//Codes
#include <Code_Sc.h>

//Matrix
#include <Row_uC.h>
#include <SPI.h>
#include <Row_ShiftRegisters.h>

// =============== CONFIGURATION ===============
const unsigned int RowBase::DELAY_MICROSECONDS = 500; //500

//activeLow has diode cathode (band) on row
//activeHigh has diode cathode (band) on col, and pull down resistors on cols
//0=active low, 1= active high
const bool RowScanner_PinsArray::ACTIVE_HIGH = 0;

Debug debug;

// ================= LEFT PINS =================
uint8_t readPins[] = {14, 15};
uint8_t READ_PIN_COUNT = sizeof(readPins)/sizeof(*readPins);

// =================== CODES ===================
Code_Sc s_a(KEY_A);
Code_Sc s_b(KEY_B);
Code_Sc s_c(KEY_C);
Code_Sc s_d(KEY_D);
Code_Sc s_e(KEY_E);
Code_Sc s_f(KEY_F);
Code_Sc s_g(KEY_G);
Code_Sc s_h(KEY_H);
Code_Sc s_i(KEY_I);

Code_Sc s_0(KEY_0);
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_5(KEY_5);
Code_Sc s_6(KEY_6);
Code_Sc s_7(KEY_7);
Code_Sc s_8(KEY_8);
Code_Sc s_z(KEY_Z);

// ================= LEFT ROWS =================
Key* ptrsKeys_L0[] = { &s_a, &s_b };
Row_uC row_L0(0, readPins, READ_PIN_COUNT, ptrsKeys_L0);

Key* ptrsKeys_L1[] = { &s_c, &s_d };
Row_uC row_L1(1, readPins, READ_PIN_COUNT, ptrsKeys_L1);

// ================= RIGHT ROWS ================
//typedef should be large in /home/wolfv/Documents/Arduino/keybrd_proj/keybrd/src/config_keybrd.h
//Row_ShiftRegisters(STROBE_PIN, SHIFT_LOAD, ptrsKeys[], KEY_COUNT)
//the s_z are place holders and should not print
/*
//BYTE_COUNT 1, prints 0 1
Key* ptrsKeys_R0[] = { &s_0, &s_a, &s_b, &s_c, &s_1, &s_d, &s_e, &s_f };
const uint8_t KEY_R0_COUNT = sizeof(ptrsKeys_R0)/sizeof(*ptrsKeys_R0);
Row_ShiftRegisters row_R0(8, 10, ptrsKeys_R0, KEY_R0_COUNT);
*/
/*
//prints 0 1 2
Key* ptrsKeys_R0[] = { &s_0, &s_z, &s_z, &s_z, &s_1, &s_z, &s_z, &s_z,
&s_2, &s_z, &s_z, &s_z };
const uint8_t KEY_R0_COUNT = sizeof(ptrsKeys_R0)/sizeof(*ptrsKeys_R0);
Row_ShiftRegisters row_R0(8, 10, ptrsKeys_R0, KEY_R0_COUNT);
*/
/*
//prints 0 1 2 3
Key* ptrsKeys_R0[] = { &s_0, &s_z, &s_z, &s_z, &s_1, &s_z, &s_z, &s_z,
&s_2, &s_z, &s_z, &s_z, &s_3, &s_z, &s_z, &s_z };
const uint8_t KEY_R0_COUNT = sizeof(ptrsKeys_R0)/sizeof(*ptrsKeys_R0);
Row_ShiftRegisters row_R0(8, 10, ptrsKeys_R0, KEY_R0_COUNT);
*/
/*
//prints 0 1 2 3 4 5
Key* ptrsKeys_R0[] = { &s_0, &s_z, &s_z, &s_z, &s_1, &s_z, &s_z, &s_z,
&s_2, &s_z, &s_z, &s_z, &s_3, &s_z, &s_z, &s_z,
&s_4, &s_z, &s_z, &s_z, &s_5, &s_z, &s_z, &s_z };
const uint8_t KEY_R0_COUNT = sizeof(ptrsKeys_R0)/sizeof(*ptrsKeys_R0);
Row_ShiftRegisters row_R0(8, 10, ptrsKeys_R0, KEY_R0_COUNT);
*/

//prints 0 1 2 3 4 5 6 7 8
Key* ptrsKeys_R0[] = { &s_0, &s_z, &s_z, &s_z, &s_1, &s_z, &s_z, &s_z,
&s_2, &s_z, &s_z, &s_z, &s_3, &s_z, &s_z, &s_z,
&s_4, &s_z, &s_z, &s_z, &s_5, &s_z, &s_z, &s_z,
&s_6, &s_z, &s_z, &s_z, &s_7, &s_z, &s_8 }; //31-key limit because endRow
const uint8_t KEY_R0_COUNT = sizeof(ptrsKeys_R0)/sizeof(*ptrsKeys_R0);
Row_ShiftRegisters row_R0(8, 10, ptrsKeys_R0, KEY_R0_COUNT);

//unresponsive
Key* ptrsKeys_R1[] = { &s_a, &s_z, &s_z, &s_z, &s_b, &s_z, &s_z, &s_z,
&s_c, &s_z, &s_z, &s_z, &s_d, &s_z, &s_z, &s_z,
&s_e, &s_z, &s_z, &s_z, &s_f, &s_z, &s_z, &s_z,
&s_g, &s_z, &s_z, &s_z, &s_h, &s_z, &s_i }; //31-key limit because endRow
const uint8_t KEY_R1_COUNT = sizeof(ptrsKeys_R1)/sizeof(*ptrsKeys_R1);
Row_ShiftRegisters row_R1(9, 10, ptrsKeys_R1, KEY_R1_COUNT);

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++)
{
//print count
Keyboard.print(count);
Keyboard.print(F(" "));

//blink LED
digitalWrite(LED_PIN, HIGH);
delay(900);
digitalWrite(LED_PIN, LOW);
delay(100);
}
}
// ################### MAIN ####################
void setup()
{
pinMode (LED_PIN, OUTPUT);
Keyboard.begin();
SPI.begin();

wait();
row_R0.begin();
row_R1.begin();
Keyboard.print(F("keybrd_shift_reg.ino "));
debug.print_free_RAM();
}

void loop()
{
row_L0.process();
row_L1.process();

row_R0.process();
row_R1.process();

//delay(100);
//Keyboard.println("");
//debug.print_microseconds_per_scan();
}

+ 136
- 0
examples/keybrd_shift_register/keybrd_shift_reg_works1.no View File

@@ -0,0 +1,136 @@
/* this works on Teensy LC 1*bb, active low and active high

| Layout | **0** | **1** |
|:------:|-------|-------|
| **0** | a | b |
| **1** | c | d |
*/
// ################## GLOBAL ###################
// ================= INCLUDES ==================
#include <Debug.h>

//IOE Ports
#include "IOExpanderPort.h"
#include <RowPort_MCP23018.h>
#include <ColPort_MCP23018.h>

//Codes
#include <Code_Sc.h>

//Matrix
#include <Row_uC.h>
#include <SPI.h>
#include <Row_ShiftRegisters.h>

// =============== CONFIGURATION ===============
const unsigned int RowBase::DELAY_MICROSECONDS = 500;

//activeLow has diode cathode (band) on row
//activeHigh has diode cathode (band) on col, and pull down resistors on cols
//0=active low, 1= active high
const bool RowScanner_PinsArray::activeHigh = 0;

Debug debug;

// ================ LEFT PORTS =================
uint8_t readPins[] = {14, 15};
uint8_t READ_PIN_COUNT = sizeof(readPins)/sizeof(*readPins);

// =================== CODES ===================
Code_Sc s_a(KEY_A);
Code_Sc s_b(KEY_B);
Code_Sc s_c(KEY_C);
Code_Sc s_d(KEY_D);

Code_Sc s_0(KEY_0);
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_5(KEY_5);
Code_Sc s_6(KEY_6);
Code_Sc s_7(KEY_7);
Code_Sc s_8(KEY_8);
Code_Sc s_z(KEY_Z);

// ================= LEFT ROWS =================
Key* ptrsKeys_L0[] = { &s_a, &s_b };
Row_uC row_L0(0, readPins, READ_PIN_COUNT, ptrsKeys_L0);

Key* ptrsKeys_L1[] = { &s_c, &s_d };
Row_uC row_L1(1, readPins, READ_PIN_COUNT, ptrsKeys_L1);

// ================= RIGHT ROWS ================
// typedef should be large in /home/wolfv/Documents/Arduino/keybrd_proj/keybrd/src/config_keybrd.h

/*
//prints 0 4
Key* ptrsKeys_R[] = { &s_0, &s_1, &s_2, &s_3,
&s_4, &s_5, &s_6, &s_7 }; //the most that 8-bit send() can handle
const uint8_t KEY_COUNT = sizeof(ptrsKeys_R)/sizeof(*ptrsKeys_R);
Row_ShiftRegisters row_R(9, 1, ptrsKeys_R, KEY_COUNT); // (SS, BYTE_COUNT,,)
*/
/*
//prints 0 4 8
Key* ptrsKeys_R[] = { &s_0, &s_z, &s_z, &s_z,
&s_4, &s_z, &s_z, &s_z,
&s_8, &s_z, &s_z, &s_z }; //the s_z are place holders and should not print
const uint8_t KEY_COUNT = sizeof(ptrsKeys_R)/sizeof(*ptrsKeys_R);
Row_ShiftRegisters row_R(9, 2, ptrsKeys_R, KEY_COUNT);
*/

//prints 0 4 8 c
Key* ptrsKeys_R[] = { &s_0, &s_z, &s_z, &s_z,
&s_4, &s_z, &s_z, &s_z,
&s_8, &s_z, &s_z, &s_z,
&s_c, &s_z, &s_z, &s_z }; //the s_z are place holders and should not print
const uint8_t KEY_COUNT = sizeof(ptrsKeys_R)/sizeof(*ptrsKeys_R);
Row_ShiftRegisters row_R(9, 2, ptrsKeys_R, KEY_COUNT);

const uint8_t LED_PIN = 16;

void wait()
{
static uint8_t count = 0;

//print count
Keyboard.print(count);
Keyboard.print(F(" "));
count++;

//blink LED
digitalWrite(LED_PIN, HIGH);
delay(900);
digitalWrite(LED_PIN, LOW);
delay(100);
}
// ################### MAIN ####################
void setup()
{
pinMode (LED_PIN, OUTPUT);
Keyboard.begin();
wait(); //0
SPI.begin();
wait(); //1
row_R.begin();
wait(); //2
wait(); //3
wait(); //4
wait(); //5 sometimes OS takes 6 seconds to recongnize keyboard, LED blinks from the begining
Keyboard.print(F("keybrd_shift_reg.ino "));
debug.print_free_RAM();
}

void loop()
{
row_L0.process();
row_L1.process();

row_R.process();

//row_R0.process();
//row_R1.process();

//delay(100);
//Keyboard.println("");
}

+ 16
- 7
src/RowScanner_SPIShiftRegisters.cpp View File

@@ -5,9 +5,9 @@ void RowScanner_SPIShiftRegisters::begin()
//configure row
pinMode(STROBE_PIN, OUTPUT);

//todo there is only one slave, is select needed?
pinMode (SHIFT_LOAD, OUTPUT);
digitalWrite (SHIFT_LOAD, HIGH);
//initialize shift register's shift/load pin
pinMode(SHIFT_LOAD, OUTPUT);
digitalWrite(SHIFT_LOAD, HIGH);
}

/*
@@ -18,18 +18,27 @@ read_pins_t RowScanner_SPIShiftRegisters::scan(read_pins_mask_t& rowEnd)
read_pins_t rowState = 0;

//strobe row on
digitalWrite(STROBE_PIN, LOW);
digitalWrite(STROBE_PIN, HIGH);
delayMicroseconds(3); //time to stablize voltage

//read all the column pins
digitalWrite(SHIFT_LOAD, LOW); //load parallel inputs to the register
digitalWrite(SHIFT_LOAD, HIGH); //shift the data toward a serial output
digitalWrite(SHIFT_LOAD, LOW); //load parallel inputs to the register
digitalWrite(SHIFT_LOAD, HIGH); //shift the data toward a serial output
SPI.transfer(&rowState, BYTE_COUNT);

//strobe row off
digitalWrite(STROBE_PIN, HIGH);
digitalWrite(STROBE_PIN, LOW);

rowEnd = 1 << KEY_COUNT;

//clear unpowered pins (for testing bb) todo
if (BYTE_COUNT == 1) rowState &= 0b00010001;
if (BYTE_COUNT == 2) rowState &= 0b0001000100010001;
if (BYTE_COUNT == 3) rowState &= 0b000100010001000100010001;
if (BYTE_COUNT == 4) rowState &= 0b01010001000100010001000100010001; //also 31st key

//Keyboard.print(" ");//todo
//Keyboard.print(rowState); //why does rowState change to 1 for both rows? (row pin 8 is unplugged)
return rowState;
}


+ 19
- 3
src/RowScanner_SPIShiftRegisters.h View File

@@ -10,6 +10,22 @@
/* RowScanner_SPIShiftRegisters reads all shift registers in a daisy chain.
The maximum keys per row is 31, because Arduino's largest type is 32 bits and rowEnd consumes the last bit.
//todo delete: Assumes only one row of shift registers is connected (no Slave Select).

For active low:
10k pull-up resistor are connected to power
connect controller's MISO pin to shift register's /QH pin
in sketch, const bool RowScanner_PinsArray::ACTIVE_HIGH = 0;

For active high:
10k pull-down resistors are grounded
connect controller's MISO pin to shift register's QH pin
in sketch, const bool RowScanner_PinsArray::ACTIVE_HIGH = 1;

shift registers 74HC165 Parallel-In-Serial-Out (PISO) are Daisy chained

The maximum keys per row is 31, because Arduino's largest type is 32 bits and rowEnd consumes the last bit.
call begin() from setup()

*/
class RowScanner_SPIShiftRegisters : public RowScannerInterface
{
@@ -17,13 +33,13 @@ class RowScanner_SPIShiftRegisters : public RowScannerInterface
//todo static const bool ACTIVE_HIGH; //logic level of strobe pin: 0=activeLow, 1=activeHigh
const uint8_t STROBE_PIN; //Arduino pin number connected to this row
const uint8_t SHIFT_LOAD; //controller's pin number that is connected to shift register's SHIFT_LOAD pin
const uint8_t BYTE_COUNT; //number of bytes to read from shift registers
const uint8_t KEY_COUNT; //number of keys in row
const uint8_t BYTE_COUNT; //number of bytes to read from shift registers
public:
RowScanner_SPIShiftRegisters(const uint8_t STROBE_PIN, const uint8_t SHIFT_LOAD,
uint8_t BYTE_COUNT, uint8_t KEY_COUNT)
uint8_t KEY_COUNT)
: STROBE_PIN(STROBE_PIN), SHIFT_LOAD(SHIFT_LOAD),
BYTE_COUNT(BYTE_COUNT), KEY_COUNT(KEY_COUNT) {}
KEY_COUNT(KEY_COUNT), BYTE_COUNT(ceil (float(KEY_COUNT)/8)) {}
virtual read_pins_t scan(read_pins_mask_t& rowEnd);
void begin();
};

+ 2
- 2
src/Row_ShiftRegisters.h View File

@@ -31,9 +31,9 @@ class Row_ShiftRegisters : public RowBase
Debouncer_4Samples debouncer;
//Debouncer_Not debouncer; //todo test
public:
Row_ShiftRegisters(const uint8_t STROBE_PIN, const uint8_t SHIFT_LOAD, uint8_t BYTE_COUNT,
Row_ShiftRegisters(const uint8_t STROBE_PIN, const uint8_t SHIFT_LOAD,
Key *const ptrsKeys[], uint8_t KEY_COUNT)
: RowBase(ptrsKeys), scanner(STROBE_PIN, SHIFT_LOAD, BYTE_COUNT, KEY_COUNT) { }
: RowBase(ptrsKeys), scanner(STROBE_PIN, SHIFT_LOAD, KEY_COUNT) { }
void begin();
read_pins_t scan(read_pins_mask_t& rowEnd);
read_pins_t debounce(const read_pins_t rowState, read_pins_t& debounced);