// ----- Macros -----
+// Make sure we haven't overflowed the buffer
+#define bufferAdd(byte) \
+ if ( KeyIndex_BufferUsed < KEYBOARD_BUFFER ) \
+ KeyIndex_Buffer[KeyIndex_BufferUsed++] = byte
+
// ----- Variables -----
-uint8_t KeyIndex_Array[KEYBOARD_SIZE + 1];
+volatile uint8_t KeyIndex_Buffer[KEYBOARD_BUFFER];
+volatile uint8_t KeyIndex_BufferUsed;
// Known signals
// Main Detection Loop
+// Nothing is needed here for the Kaypro, but the function is available as part of the api to be called in a polling fashion
+// TODO
+// - Add songs :D
inline uint8_t scan_loop()
{
- /*
- // Packet Read
- if ( packet_index == 8 )
- {
- // Disable Error LED, proper key found
- errorLED( 0 );
-
-//#ifdef MAX_DEBUG
- // Crazy Debug (Read the Scan Code)
- char tmpStr[3];
- hexToStr_op( inputData, tmpStr, 2 );
- dPrintStrsNL( "Read Data: 0x", tmpStr );
-//#endif
- // - Map the scan code to the index array -
- // If the 8th bit is high, remove the keypress, else, add the keypress
- // The lower 7 bits are the array index
- KeyIndex_Array[(inputData & 0x7F)] = (inputData & 0x80) ? 0x00 : 0x80;
-
- // Reset Containers
- packet_index = 0;
- inputData = 0xFF;
- }
- // Bad Packet
- else if ( packet_index > 8 )
- {
- // Signal Error
- errorLED( 1 );
-
- char tmpStr[3];
- int8ToStr( packet_index, tmpStr );
- erro_dPrint( "Big packet? Mismatched... ", tmpStr );
-
- packet_index = 0;
- inputData = 0xFF;
- }
- */
- /*
- // Disable keyboard interrupt (does nothing if already off)
- UNSET_INTR();
-
- // Read the clock 8 times
- if ( READ_CLK )
- {
- // Mis-read packet, set back to 0
- if ( packet_index == -1 )
- packet_index = 0;
-
- // Append 1 bit of data
- inputData &= ~(READ_DATA << packet_index);
- packet_index++;
-
- // 8 Bits have been read
- if ( packet_index == 8 )
- {
- // Wait till clock edge falls
- while ( READ_CLK );
-
- // Sample both lines to make sure this is not a data value
- // and definitely the end of packet data blip
- uint16_t badDataCounter = 0;
- while ( !( READ_DATA ) && !( READ_CLK ) )
- badDataCounter++;
-
- if ( badDataCounter < 25 )
- {
-//#ifdef MAX_DEBUG
- // Crazy Debug (Read the Scan Code)
- char tmpStr[3];
- hexToStr_op( inputData, tmpStr, 2 );
- dbug_dPrint( "Read Data: 0x", tmpStr );
-//#endif
- // - Map the scan code to the index array -
- // If the 8th bit is high, remove the keypress, else, add the keypress
- // The lower 7 bits are the array index
- KeyIndex_Array[(inputData & 0x7F)] = (inputData & 0x80) ? 0x00 : 0x80;
- }
- // Even though this is a mis-read packet, we still know what the value is
- else
- {
- // Signal Error
- errorLED( 1 );
- char tmpStr[3];
- hexToStr_op( inputData, tmpStr, 2 );
- erro_dPrint( "Bad packet? Mismatched... 0x", tmpStr );
- }
-
- // Reset Containers
- inputData = 0xFF;
- packet_index = 0;
-
- // Interrupt the keyboard, so we don't get packet pieces...
- SET_INTR();
-
- // Do not wait for next clock, let USB do it's thing (if desired)
- return packet_index;
- }
-
- // Wait till clock edge falls
- while ( READ_CLK );
- }
-
- // Interrupt keyboard if there is no pending packet
- SET_INTR();
- */
+ // We *could* do extra offline processing here, but, it's not really needed for the Kaypro 1 keyboard
return 0;
}
{
cli(); // Disable Interrupts
+ // Get key from USART
uint8_t keyValue = UDR1;
+
+//#ifdef MAX_DEBUG
+ // Debug print key
char tmpStr1[6];
hexToStr( keyValue, tmpStr1 );
dPrintStrs( tmpStr1, " " );
+//#endif
+
+ // Add key(s) to processing buffer
+ // First split out Shift and Ctrl
+ // Reserved Codes:
+ // Shift - 0xF5
+ // Ctrl - 0xF6
+ switch ( keyValue )
+ {
+ // - Ctrl Keys -
+ // Exception keys
+ case 0x08: // ^H
+ case 0x09: // ^I
+ case 0x0D: // ^M
+ case 0x1B: // ^[
+ bufferAdd( keyValue );
+ break;
+ // 0x40 Offset Keys
+ // Add Ctrl key and offset to the lower alphabet
+ case 0x00: // ^@
+ case 0x1C: // "^\"
+ case 0x1D: // ^]
+ case 0x1E: // ^^
+ case 0x1F: // ^_
+ bufferAdd( 0xF6 );
+ bufferAdd( keyValue + 0x40 );
+ break;
+
+ // - Add Shift key and offset to non-shifted key -
+ // 0x10 Offset Keys
+ case 0x21: // !
+ case 0x23: // #
+ case 0x24: // $
+ case 0x25: // %
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue + 0x10 );
+ break;
+ // 0x11 Offset Keys
+ case 0x26: // &
+ case 0x28: // (
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue + 0x11 );
+ break;
+ // 0x07 Offset Keys
+ case 0x29: // )
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue + 0x07 );
+ break;
+ // -0x0E Offset Keys
+ case 0x40: // @
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue - 0x0E );
+ break;
+ // 0x0E Offset Keys
+ case 0x2A: // *
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue + 0x0E );
+ break;
+ // 0x12 Offset Keys
+ case 0x2B: // +
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue + 0x12 );
+ break;
+ // 0x05 Offset Keys
+ case 0x22: // "
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue + 0x05 );
+ break;
+ // 0x01 Offset Keys
+ case 0x3A: // :
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue + 0x01 );
+ break;
+ // -0x10 Offset Keys
+ case 0x3C: // <
+ case 0x3E: // >
+ case 0x3F: // ?
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue - 0x10 );
+ break;
+ // -0x28 Offset Keys
+ case 0x5E: // ^
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue - 0x28 );
+ break;
+ // -0x32 Offset Keys
+ case 0x5F: // _
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue - 0x32 );
+ break;
+ // -0x20 Offset Keys
+ case 0x7B: // {
+ case 0x7C: // |
+ case 0x7D: // }
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue - 0x20 );
+ break;
+ // -0x1E Offset Keys
+ case 0x7E: // ~
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue - 0x1E );
+ break;
+ // All other keys
+ default:
+ // Ctrl Characters are from 0x00 to 0x1F, excluding:
+ // 0x08 - Backspace
+ // 0x09 - [Horizontal] Tab
+ // 0x0D - [Carriage] Return
+ // 0x1B - Escape
+ // 0x7F - Delete (^?) (Doesn't need to be split out)
+
+ // 0x60 Offset Keys
+ // Add Ctrl key and offset to the lower alphabet
+ if ( keyValue >= 0x00 && keyValue <= 0x1F )
+ {
+ bufferAdd( 0xF6 );
+ bufferAdd( keyValue + 0x60 );
+ }
+
+ // Shift Characters are from 0x41 to 0x59
+ // No exceptions here :D
+ // Add Shift key and offset to the lower alphabet
+ else if ( keyValue >= 0x41 && keyValue <= 0x5A )
+ {
+ bufferAdd( 0xF5 );
+ bufferAdd( keyValue + 0x20 );
+ }
+
+ // Everything else
+ else
+ {
+ bufferAdd( keyValue );
+ }
+ break;
+ }
// Special keys - For communication to the keyboard
// TODO Try to push this functionality into the macros...somehow
break;
}
- // Add key to processing buffer
-
sei(); // Re-enable Interrupts
}
projects / kiibohd-controller.git / blobdiff