@@ -0,0 +1,99 @@ | |||
/* keybrd_PCA9655E.ino | |||
Teensy 2.0 controller PCA9655E I/O expander | |||
| Left | **0** | **1** | | Right | **0** | **1** | | |||
|:-----:|-------|-------| |:-----:|-------|-------| | |||
| **1** | 1 | 2 | | **1** | 3 | 4 | | |||
| **0** | a | b | | **0** | c | d | | |||
*/ | |||
// ################## GLOBAL ################### | |||
// ================= INCLUDES ================== | |||
#include <ScanDelay.h> | |||
#include <Code_Sc.h> | |||
//left matrix | |||
#include <Row_uC.h> | |||
//right matrix | |||
#include <Row_IOE.h> | |||
#include <PortIOE.h> | |||
#include <PortWrite_PCA9655E.h> | |||
#include <PortRead_PCA9655E.h> | |||
// ============ SPEED CONFIGURATION ============ | |||
ScanDelay scanDelay(9000); | |||
// =============== LEFT uC MATRIX ============== | |||
const bool Scanner_uC::STROBE_ON = HIGH; //active high | |||
const bool Scanner_uC::STROBE_OFF = LOW; | |||
uint8_t readPins_L[] = {0, 1}; | |||
// ============== RIGHT IOE MATRIX ============= | |||
const bool Scanner_Port::STROBE_ON = HIGH; //active high | |||
const bool Scanner_Port::STROBE_OFF = LOW; | |||
const uint8_t PortIOE::DEVICE_ADDR = 0x18; | |||
// ------------------ PORT 1 ------------------- | |||
PortIOE port1_R(1, 0); | |||
PortWrite_PCA9655E portWrite1_R(port1_R); | |||
// ------------------ PORT 0 ------------------- | |||
PortIOE port0_R(0, 0); | |||
PortWrite_PCA9655E portWrite0_R(port0_R); | |||
PortRead_PCA9655E portRead0_R(port0_R, 1<<0 | 1<<1 ); | |||
// =================== 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_1(KEY_1); | |||
Code_Sc s_2(KEY_2); | |||
Code_Sc s_3(KEY_3); | |||
Code_Sc s_4(KEY_4); | |||
// =================== ROWS ==================== | |||
// ---------------- LEFT ROWS ------------------ | |||
Key* ptrsKeys_L0[] = { &s_1, &s_2 }; | |||
uint8_t KEY_COUNT_L0 = sizeof(ptrsKeys_L0)/sizeof(*ptrsKeys_L0); | |||
Row_uC row_L0(21, readPins_L, KEY_COUNT_L0, ptrsKeys_L0); | |||
Key* ptrsKeys_L1[] = { &s_a, &s_b }; | |||
uint8_t KEY_COUNT_L1 = sizeof(ptrsKeys_L1)/sizeof(*ptrsKeys_L1); | |||
Row_uC row_L1(20, readPins_L, KEY_COUNT_L1, ptrsKeys_L1); | |||
// ---------------- RIGHT ROWS ----------------- | |||
Key* ptrsKeys_R0[] = { &s_3, &s_4 }; | |||
uint8_t KEY_COUNT_R0 = sizeof(ptrsKeys_R0)/sizeof(*ptrsKeys_R0); | |||
Row_IOE row_R0(portWrite1_R, 1<<0, portRead0_R, KEY_COUNT_R0, ptrsKeys_R0); | |||
Key* ptrsKeys_R1[] = { &s_c, &s_d }; | |||
uint8_t KEY_COUNT_R1 = sizeof(ptrsKeys_R1)/sizeof(*ptrsKeys_R1); | |||
Row_IOE row_R1(portWrite1_R, 1<<1, portRead0_R, KEY_COUNT_R1, ptrsKeys_R1); | |||
// ################### MAIN #################### | |||
void setup() | |||
{ | |||
Keyboard.begin(); | |||
Wire.begin(); //Wire.begin() must be called before port begin() | |||
portWrite1_R.begin(); | |||
portRead0_R.begin(); | |||
} | |||
void loop() | |||
{ | |||
//left matrix | |||
row_L0.process(); | |||
row_L1.process(); | |||
//right matrix | |||
row_R0.process(); | |||
row_R1.process(); | |||
scanDelay.delay(); | |||
//debug.print_scans_per_second(); | |||
//debug.print_microseconds_per_scan(); | |||
} |
@@ -7,15 +7,15 @@ | |||
class PortWriteInterface; | |||
class PortReadInterface; | |||
/* Row_IOE is a row connected to an Input/Output Expander. | |||
Configuration and Instantiation instructions are in keybrd/src/Row_IOE.h | |||
/* Row_IOE is a row connected to an I/O Expander. | |||
Configuration and Instantiation instructions are in keybrd/src/Row_uC.h | |||
*/ | |||
class Row_IOE : public Row | |||
{ | |||
private: | |||
Scanner_Port scanner; | |||
Debouncer_Samples debouncer; | |||
const uint8_t readPinCount; //number of read pins | |||
const uint8_t readPinCount; | |||
public: | |||
Row_IOE(PortWriteInterface& refPortWrite, const uint8_t strobePin, | |||
PortReadInterface& refPortRead, const uint8_t readPinCount, Key *const ptrsKeys[]) |
@@ -1,4 +1,4 @@ | |||
/* keybrd_4c_split_with_IOE_annotated.ino | |||
/* keybrd_4c_split_with_IOE.ino | |||
| Left | **0** | **1** | | Right | **0** | **1** | | |||
|:-----:|-------|-------| |:-----:|-------|-------| |
@@ -1,42 +0,0 @@ | |||
/* this works | |||
The setup is an MCP23S17 I/O expander on a Teensy LC controller. | |||
MCP23S17 port B pins are alternately grounded and energized. | |||
portBState is a bitwise reading of port B. | |||
output is: 10101010 | |||
posted on http://arduino.stackexchange.com/questions/tagged/spi | |||
http://arduino.stackexchange.com/questions/28792/reading-an-mcp23s17-i-o-expander-port-with-the-arduino-spi-library | |||
*/ | |||
#include <SPI.h> | |||
const uint8_t ADDR = 0x20; //MCP23S17 address, all 3 ADDR pins are grounded | |||
const uint8_t OPCODE_READ = (ADDR << 1 | 0x01); //MCP23S17 opcode read has LSB set | |||
const uint8_t IODIRB = 0x01; | |||
const uint8_t GPIOB = 0x13; | |||
uint8_t portBState = 0; //bit wise | |||
void setup() | |||
{ | |||
Serial.begin(9600); | |||
delay(1000); | |||
pinMode(SS, OUTPUT); //configure controller's Slave Select pin to output | |||
digitalWrite(SS, HIGH); //disable Slave Select | |||
SPI.begin(); | |||
//IODIRB register is already configured to input by default | |||
SPI.beginTransaction(SPISettings (SPI_CLOCK_DIV8, MSBFIRST, SPI_MODE0)); //gain control of SPI bus | |||
digitalWrite(SS, LOW); //enable Slave Select | |||
SPI.transfer(OPCODE_READ); //read command | |||
SPI.transfer(GPIOB); //register address to read data from | |||
portBState = SPI.transfer(0); //save the data (0 is dummy data to send) | |||
digitalWrite(SS, HIGH); //disable Slave Select | |||
SPI.endTransaction(); //release the SPI bus | |||
Serial.println(portBState, BIN); //should print 10101010 | |||
} | |||
void loop() { } |
@@ -1,54 +0,0 @@ | |||
/* this works with volt meter (MCP23S17 on 3.3v does not output enough power for LEDs) | |||
LED lights w/o resistor, not light with 56 ohm resistor | |||
blink LED on MCP23S17 port A pin | |||
from Example 41.1 - Microchip MCP23017 with Arduino | |||
http://tronixstuff.com/tutorials > chapter 41 | |||
http://tronixstuff.com/2011/08/26/tutorial-maximising-your-arduinos-io-ports/ | |||
John Boxall | CC by-sa-nc | |||
from http://69.5.26.215/forum/?id=10945&page=3 #35 | |||
modified to test MCP23S17 (SPI) using syntax from | |||
http://arduino.stackexchange.com/questions/16348/how-do-you-use-spi-on-an-arduino | |||
> | |||
SPISettings from http://arduino.stackexchange.com/questions/14191/mcp23s17-programming-iodirx-register-works-in-loop-but-not-in-setup | |||
*/ | |||
#include <SPI.h> | |||
const uint8_t ADDR = 0x20; //MCP23S17 address, all ADDR pins are grounded | |||
const uint8_t OPCODE_WRITE = (ADDR << 1); //MCP23S17 opcode write has LSB clear | |||
const uint8_t IODIRA = 0x00; //LEDs are on port A | |||
const uint8_t GPIOA = 0x12; | |||
uint8_t LED_state = 0; //bit wise | |||
void IOEWrite(const uint8_t registerAddr, const uint8_t data) | |||
{ | |||
SPI.beginTransaction(SPISettings (SPI_CLOCK_DIV8, MSBFIRST, SPI_MODE0)); //slower clock | |||
digitalWrite(SS, LOW); //enable Slave Select | |||
SPI.transfer(OPCODE_WRITE); //write command | |||
SPI.transfer(registerAddr); //register address to write data to | |||
SPI.transfer(data); //data | |||
digitalWrite(SS, HIGH); //disable Slave Select | |||
SPI.endTransaction(); //release the SPI bus | |||
} | |||
void setup() | |||
{ | |||
Serial.begin(9600); | |||
pinMode(SS, OUTPUT); //configure controller's Slave Select pin to output | |||
digitalWrite(SS, HIGH); //disable Slave Select | |||
SPI.begin(); | |||
IOEWrite(IODIRA, 0x00); //configure IODIRA register to output | |||
} | |||
void loop() | |||
{ | |||
IOEWrite(GPIOA, LED_state); //set all GPIOA pins | |||
delay(2000); | |||
//Serial.println(LED_state, BIN); //prints alternating 0 and 11111111 | |||
LED_state = ~LED_state; //toggle LED on/off | |||
} |