mirror of
https://github.com/smartykit/apple1.git
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Merge pull request #2 from sparky62/master
Upgrade to use PS2KeyAdvanced to support modern PS/2 Keyboards (like Perixx from Amazon – https://youtu.be/6pjx7aud5Eo).
This commit is contained in:
Computer construction kit SmartyKit
GitHub
commit
9cce8e0b62
1
.gitignore
vendored
1
.gitignore
vendored
@ -1 +1,2 @@
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.DS_Store
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.vscode
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@ -15,7 +15,8 @@
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "PS2Keyboard.h"
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#include <PS2KeyAdvanced.h>
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#include <PS2KeyMap.h>
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// Keyboard Driver pins connections:
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// D0 & D1 – reserved for Serial connection
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@ -27,92 +28,96 @@
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// A4 -> Low-rate clock output for CPU CLK input
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// A5 -> Low-rate clock output for indicating LED connection
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const int PS2Socket_Data = 2;
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const int CPUreadsKeyboardPin = 3;
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const int PS2Socket_Clk = 4;
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#define PS2KEYBOARDCLOCK_PIN 2
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#define KEYBOARD_RD_PIN 3
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#define PS2KEYBOARD_DATA_PIN 4
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#define KEYBOARD_BIT7_PIN 5
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const int KeyboardPort[8] = {6, 7, 8, 9, 10, 11, 12, 13};
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const int KeyboardBIT7pin = 5; //
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const int DataBus[8] = {6, 7, 8, 9, 10, 11, 12, 13};
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static boolean BIT7flag = false;
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static boolean autoMode = true; //run pre-set command or wait for user input from PS/2 keyboard
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static boolean autoMode = false; //run pre-set command or wait for user input from PS/2 keyboard
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static boolean autoCommandSent = false; // run pre-set command only once after reboot of Keyboard controller
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//low-rate clock for tests on A4-A5
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#define CLOCK A4
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#define LED A5
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int lowRateClockPeriod = 10; //10 milliseconds = 100 times per second (100 Hz)
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#define LORATE_CLOCK_PIN A4
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#define LORATE_CLOCK_LED_PIN A5
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//#define _WITH_SERIAL_
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#define _WITH_PS2_
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//10 milliseconds = 100 times per second (100 Hz)
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#define LORATE_CLOCK_PERIOD_MILLIS 100
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#ifdef _WITH_PS2_
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PS2Keyboard keyboard;
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#endif
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PS2KeyAdvanced keyboard;
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PS2KeyMap keymap;
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void setup()
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{
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pinMode(CLOCK, OUTPUT);
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pinMode(LED, OUTPUT);
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pinMode(LORATE_CLOCK_PIN, OUTPUT);
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pinMode(LORATE_CLOCK_LED_PIN, OUTPUT);
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pinMode(CPUreadsKeyboardPin, INPUT_PULLUP);
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for (int count = 1; count <= 8; count++) {
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pinMode(DataBus[count-1], OUTPUT);
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};
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pinMode(KeyboardBIT7pin, OUTPUT);
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KeyboardBIT7_Disable();
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pinMode(KEYBOARD_RD_PIN, INPUT_PULLUP);
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for (int bit = 0; bit < 8; bit++) {
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pinMode(KeyboardPort[bit], OUTPUT);
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}
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pinMode(KEYBOARD_BIT7_PIN, OUTPUT);
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digitalWrite(KEYBOARD_BIT7_PIN, LOW);
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Serial.begin(9600);
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Serial.println("SmartyKit 1 PS2 Keyboard is ready...");
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if (autoMode)
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delay(7500); //for start without Keyboard connected
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else
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delay(500);
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#ifdef _WITH_PS2_
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keyboard.begin(PS2Socket_Clk, PS2Socket_Data);
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#endif
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attachInterrupt(1, cpuReadsKeyboard, FALLING);
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keyboard.begin(PS2KEYBOARD_DATA_PIN, PS2KEYBOARDCLOCK_PIN);
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keyboard.echo();
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delay( 6 );
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uint16_t scan_code = keyboard.read();
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#ifdef _WITH_SERIAL_
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Serial.begin(9600);
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Serial.println("SmartyKit 1 Serial Keyboard is ready...");
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#endif
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if( (scan_code & 0xff) == PS2_KEY_ECHO || (scan_code & 0xff) == PS2_KEY_BAT || (scan_code & 0xff) == 0xe8 )
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Serial.println( "Keyboard OK.." ); // Response was Echo or power up
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else
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if ((scan_code & 0xff) == 0)
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{
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Serial.println( "Keyboard Not Found" );
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}
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else
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{
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Serial.print( "Invalid Code received of 0x" );
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Serial.println(scan_code, HEX);
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}
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keyboard.setNoBreak(1);
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keyboard.setNoRepeat(1);
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keymap.selectMap((char *)"UK");
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attachInterrupt(digitalPinToInterrupt(KEYBOARD_RD_PIN), cpuReadsKeyboard, FALLING);
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}
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void cpuReadsKeyboard(void)
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{
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KeyboardBIT7_Disable();
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}
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void KeyboardBIT7_Enable()
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{
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digitalWrite(KeyboardBIT7pin, HIGH);
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BIT7flag = true;
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}
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void KeyboardBIT7_Disable()
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{
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digitalWrite(KeyboardBIT7pin, LOW);
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BIT7flag = false;
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digitalWrite(KEYBOARD_BIT7_PIN, LOW);
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}
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void sendCharToKeyboardPort(char c)
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{
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while(BIT7flag == true) //wait untill the previous char is read by CPU
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delay(5);
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for (int count = 1; count <= 8 ; count++)
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{
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if (c == '\r')
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Serial.println();
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else
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Serial.print(c);
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for (int bit = 0; bit < 8 ; bit++)
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{
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if (c & (1 << (count-1)))
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digitalWrite(DataBus[count-1], HIGH);
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else
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digitalWrite(DataBus[count-1], LOW);
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if (c & (1 << (bit)))
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digitalWrite(KeyboardPort[bit], HIGH);
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else
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digitalWrite(KeyboardPort[bit], LOW);
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}
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digitalWrite(DataBus[7], HIGH);
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KeyboardBIT7_Enable();
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digitalWrite(KeyboardPort[7], HIGH);
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digitalWrite(KEYBOARD_BIT7_PIN, HIGH);
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}
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void loop() {
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void loop()
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{
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//run pre-set command in auto-mode when PS/2 keyboard is not connected
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//only once after reboot of Keyboard controller
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if (autoMode && !autoCommandSent)
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@ -121,55 +126,58 @@ void loop() {
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runAutoModeCommand();
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}
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#ifdef _WITH_PS2_
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//check PS2 input
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if (keyboard.available()) {
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char c = keyboard.read();
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if (!digitalRead(KEYBOARD_BIT7_PIN) && keyboard.available())
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{
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uint16_t scan_code = keymap.remapKey(keyboard.read());
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char c = scan_code & 0xff;
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Serial.print(":0x");
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Serial.print(scan_code, HEX);
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Serial.print(":");
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if (c == PS2_TAB)
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runCommand();
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//process Backspace, Left Arrow, Delete as Apple I backspace '_'
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if (c == PS2_BACKSPACE) {
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c = '_';
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} else if (c == PS2_LEFTARROW) {
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c = '_';
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} else if (c == PS2_DELETE) {
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c = '_';
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switch (c)
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{
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case PS2_KEY_TAB:
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runCommand();
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break;
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case PS2_KEY_BS:
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case PS2_KEY_DELETE:
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case PS2_KEY_L_ARROW:
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c = '_';
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break;
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case PS2_KEY_ENTER:
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c = '\r';
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break;
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case PS2_KEY_SPACE:
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c = ' ';
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break;
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}
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int scan_code = (int)c;
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//make all symbols uppercase (from 'a' (ASCII code 0x61) to 'z' (ASCII code 0x7A))
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//as in original Apple-1
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if (scan_code >= 0x61 && scan_code <= 0x7A)
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scan_code -= 0x20;
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c = (char) scan_code;
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c = toupper(c);
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//print c to Keyboard Port to be read by CPU
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sendCharToKeyboardPort(c);
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#ifdef _WITH_SERIAL_
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Serial.print(c);
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if (c == '\r')
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Serial.println();
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#endif
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}
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#endif
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//low-rate clock
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digitalWrite(CLOCK, HIGH);
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digitalWrite(LED, HIGH);
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delay(lowRateClockPeriod); // wait for a lowRateClockPeriod
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digitalWrite(CLOCK, LOW);
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digitalWrite(LED, LOW);
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delay(lowRateClockPeriod); // wait for a lowRateClockPeriod
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digitalWrite(LORATE_CLOCK_PIN, HIGH);
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digitalWrite(LORATE_CLOCK_LED_PIN, HIGH);
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delay(LORATE_CLOCK_PERIOD_MILLIS); // wait for a LORATE_CLOCK_PERIOD_MILLIS
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digitalWrite(LORATE_CLOCK_PIN, LOW);
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digitalWrite(LORATE_CLOCK_LED_PIN, LOW);
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delay(LORATE_CLOCK_PERIOD_MILLIS); // wait for a LORATE_CLOCK_PERIOD_MILLIS
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}
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//running pre-set Woz OS command for auto mode
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void runAutoModeCommand()
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{
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const int CMD_COUNT = 1;
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const int cmd_count = 1;
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String cmd1 = String("F000R\r"); // Woz face demo program at $F000
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String commands[] = {cmd1};
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for (int i = 0; i < CMD_COUNT; i++)
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for (int i = 0; i < cmd_count; i++)
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for (int j = 0; j < commands[i].length(); j++)
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{
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char c = commands[i].charAt(j);
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@ -179,17 +187,16 @@ void runAutoModeCommand()
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//running pre-set Woz OS command (drawing 8x8 pixel art)
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void runCommand()
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{
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const int CMD_COUNT = 4;
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const int cmd_count = 4;
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String cmd1 = String("1111: 88 A8 50\r");
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String cmd2 = String(":07 61 92\r");
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String cmd3 = String(":94 67\r");
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String cmd4 = String("FC00R\r");
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String commands[] = {cmd1, cmd2, cmd3, cmd4};
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for (int i = 0; i < CMD_COUNT; i++)
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for (int i = 0; i < cmd_count; i++)
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for (int j = 0; j < commands[i].length(); j++)
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{
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char c = commands[i].charAt(j);
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sendCharToKeyboardPort(c);
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}
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}
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