Adding Kaypro1 functional support
- Uses USART instead of polling - Supports two way communication (only 3 commands to the keyboard though) - Kaypro sends data as ASCII, which severely limits the handling of modifiers - No release signal is sent, so even faking modifiers is next to impossible outside of Shift and Ctrl - Includes default QWERTY and Colemak layouts - Developed a new buffer macro, which will become the basic macro module once all the other modules have been ported (much more efficient, as it keeps serial scanning schemes serial, and parallel scanning schemes such as matrix, that already serialized into a sort of buffer for the debouncing evaluation) - This module is quite efficient, and would be able to handle very excessive macro processing in the future. - If more of the keypboard communication protocol is desired, I have a rom dump of the microcontroller (M5L8049)
This commit is contained in:
Jacob Alexander
parent
266b59b851
commit
a017d2f270
6 changed files with 709 additions and 114 deletions
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@ -40,11 +40,17 @@
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// ----- Macros -----
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// Make sure we haven't overflowed the buffer
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#define bufferAdd(byte) \
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if ( KeyIndex_BufferUsed < KEYBOARD_BUFFER ) \
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KeyIndex_Buffer[KeyIndex_BufferUsed++] = byte
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// ----- Variables -----
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uint8_t KeyIndex_Array[KEYBOARD_SIZE + 1];
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volatile uint8_t KeyIndex_Buffer[KEYBOARD_BUFFER];
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volatile uint8_t KeyIndex_BufferUsed;
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// Known signals
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@ -83,112 +89,12 @@ inline void scan_setup()
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// Main Detection Loop
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// Nothing is needed here for the Kaypro, but the function is available as part of the api to be called in a polling fashion
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// TODO
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// - Add songs :D
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inline uint8_t scan_loop()
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{
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/*
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// Packet Read
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if ( packet_index == 8 )
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{
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// Disable Error LED, proper key found
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errorLED( 0 );
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//#ifdef MAX_DEBUG
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// Crazy Debug (Read the Scan Code)
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char tmpStr[3];
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hexToStr_op( inputData, tmpStr, 2 );
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dPrintStrsNL( "Read Data: 0x", tmpStr );
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//#endif
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// - Map the scan code to the index array -
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// If the 8th bit is high, remove the keypress, else, add the keypress
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// The lower 7 bits are the array index
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KeyIndex_Array[(inputData & 0x7F)] = (inputData & 0x80) ? 0x00 : 0x80;
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// Reset Containers
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packet_index = 0;
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inputData = 0xFF;
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}
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// Bad Packet
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else if ( packet_index > 8 )
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{
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// Signal Error
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errorLED( 1 );
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char tmpStr[3];
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int8ToStr( packet_index, tmpStr );
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erro_dPrint( "Big packet? Mismatched... ", tmpStr );
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packet_index = 0;
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inputData = 0xFF;
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}
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*/
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/*
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// Disable keyboard interrupt (does nothing if already off)
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UNSET_INTR();
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// Read the clock 8 times
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if ( READ_CLK )
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{
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// Mis-read packet, set back to 0
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if ( packet_index == -1 )
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packet_index = 0;
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// Append 1 bit of data
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inputData &= ~(READ_DATA << packet_index);
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packet_index++;
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// 8 Bits have been read
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if ( packet_index == 8 )
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{
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// Wait till clock edge falls
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while ( READ_CLK );
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// Sample both lines to make sure this is not a data value
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// and definitely the end of packet data blip
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uint16_t badDataCounter = 0;
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while ( !( READ_DATA ) && !( READ_CLK ) )
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badDataCounter++;
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if ( badDataCounter < 25 )
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{
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//#ifdef MAX_DEBUG
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// Crazy Debug (Read the Scan Code)
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char tmpStr[3];
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hexToStr_op( inputData, tmpStr, 2 );
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dbug_dPrint( "Read Data: 0x", tmpStr );
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//#endif
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// - Map the scan code to the index array -
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// If the 8th bit is high, remove the keypress, else, add the keypress
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// The lower 7 bits are the array index
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KeyIndex_Array[(inputData & 0x7F)] = (inputData & 0x80) ? 0x00 : 0x80;
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}
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// Even though this is a mis-read packet, we still know what the value is
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else
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{
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// Signal Error
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errorLED( 1 );
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char tmpStr[3];
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hexToStr_op( inputData, tmpStr, 2 );
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erro_dPrint( "Bad packet? Mismatched... 0x", tmpStr );
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}
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// Reset Containers
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inputData = 0xFF;
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packet_index = 0;
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// Interrupt the keyboard, so we don't get packet pieces...
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SET_INTR();
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// Do not wait for next clock, let USB do it's thing (if desired)
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return packet_index;
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}
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// Wait till clock edge falls
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while ( READ_CLK );
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}
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// Interrupt keyboard if there is no pending packet
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SET_INTR();
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*/
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// We *could* do extra offline processing here, but, it's not really needed for the Kaypro 1 keyboard
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return 0;
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}
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@ -197,10 +103,149 @@ ISR(USART1_RX_vect)
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{
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cli(); // Disable Interrupts
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// Get key from USART
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uint8_t keyValue = UDR1;
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//#ifdef MAX_DEBUG
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// Debug print key
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char tmpStr1[6];
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hexToStr( keyValue, tmpStr1 );
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dPrintStrs( tmpStr1, " " );
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//#endif
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// Add key(s) to processing buffer
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// First split out Shift and Ctrl
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// Reserved Codes:
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// Shift - 0xF5
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// Ctrl - 0xF6
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switch ( keyValue )
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{
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// - Ctrl Keys -
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// Exception keys
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case 0x08: // ^H
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case 0x09: // ^I
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case 0x0D: // ^M
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case 0x1B: // ^[
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bufferAdd( keyValue );
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break;
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// 0x40 Offset Keys
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// Add Ctrl key and offset to the lower alphabet
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case 0x00: // ^@
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case 0x1C: // "^\"
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case 0x1D: // ^]
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case 0x1E: // ^^
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case 0x1F: // ^_
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bufferAdd( 0xF6 );
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bufferAdd( keyValue + 0x40 );
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break;
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// - Add Shift key and offset to non-shifted key -
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// 0x10 Offset Keys
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case 0x21: // !
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case 0x23: // #
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case 0x24: // $
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case 0x25: // %
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bufferAdd( 0xF5 );
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bufferAdd( keyValue + 0x10 );
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break;
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// 0x11 Offset Keys
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case 0x26: // &
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case 0x28: // (
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bufferAdd( 0xF5 );
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bufferAdd( keyValue + 0x11 );
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break;
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// 0x07 Offset Keys
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case 0x29: // )
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bufferAdd( 0xF5 );
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bufferAdd( keyValue + 0x07 );
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break;
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// -0x0E Offset Keys
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case 0x40: // @
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bufferAdd( 0xF5 );
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bufferAdd( keyValue - 0x0E );
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break;
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// 0x0E Offset Keys
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case 0x2A: // *
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bufferAdd( 0xF5 );
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bufferAdd( keyValue + 0x0E );
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break;
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// 0x12 Offset Keys
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case 0x2B: // +
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bufferAdd( 0xF5 );
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bufferAdd( keyValue + 0x12 );
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break;
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// 0x05 Offset Keys
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case 0x22: // "
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bufferAdd( 0xF5 );
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bufferAdd( keyValue + 0x05 );
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break;
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// 0x01 Offset Keys
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case 0x3A: // :
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bufferAdd( 0xF5 );
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bufferAdd( keyValue + 0x01 );
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break;
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// -0x10 Offset Keys
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case 0x3C: // <
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case 0x3E: // >
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case 0x3F: // ?
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bufferAdd( 0xF5 );
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bufferAdd( keyValue - 0x10 );
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break;
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// -0x28 Offset Keys
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case 0x5E: // ^
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bufferAdd( 0xF5 );
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bufferAdd( keyValue - 0x28 );
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break;
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// -0x32 Offset Keys
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case 0x5F: // _
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bufferAdd( 0xF5 );
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bufferAdd( keyValue - 0x32 );
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break;
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// -0x20 Offset Keys
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case 0x7B: // {
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case 0x7C: // |
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case 0x7D: // }
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bufferAdd( 0xF5 );
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bufferAdd( keyValue - 0x20 );
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break;
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// -0x1E Offset Keys
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case 0x7E: // ~
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bufferAdd( 0xF5 );
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bufferAdd( keyValue - 0x1E );
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break;
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// All other keys
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default:
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// Ctrl Characters are from 0x00 to 0x1F, excluding:
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// 0x08 - Backspace
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// 0x09 - [Horizontal] Tab
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// 0x0D - [Carriage] Return
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// 0x1B - Escape
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// 0x7F - Delete (^?) (Doesn't need to be split out)
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// 0x60 Offset Keys
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// Add Ctrl key and offset to the lower alphabet
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if ( keyValue >= 0x00 && keyValue <= 0x1F )
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{
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bufferAdd( 0xF6 );
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bufferAdd( keyValue + 0x60 );
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}
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// Shift Characters are from 0x41 to 0x59
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// No exceptions here :D
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// Add Shift key and offset to the lower alphabet
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else if ( keyValue >= 0x41 && keyValue <= 0x5A )
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{
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bufferAdd( 0xF5 );
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bufferAdd( keyValue + 0x20 );
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}
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// Everything else
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else
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{
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bufferAdd( keyValue );
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}
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break;
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}
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// Special keys - For communication to the keyboard
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// TODO Try to push this functionality into the macros...somehow
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@ -225,8 +270,6 @@ ISR(USART1_RX_vect)
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break;
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}
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// Add key to processing buffer
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sei(); // Re-enable Interrupts
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}
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@ -34,15 +34,14 @@
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// ----- Defines -----
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#define KEYBOARD_SIZE 0x4c // 76 - Size of the array space for the keyboardr(max index)
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#define KEYBOARD_BUFFER 24 // Max number of key signals to buffer
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// ----- Variables -----
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// NOTE: Highest Bit: Valid keypress (0x80 is valid keypress)
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// Other Bits: Pressed state sample counter
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extern uint8_t KeyIndex_Array [KEYBOARD_SIZE + 1];
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static const uint8_t KeyIndex_Size = KEYBOARD_SIZE;
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extern volatile uint8_t KeyIndex_Buffer[KEYBOARD_BUFFER];
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extern volatile uint8_t KeyIndex_BufferUsed;
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@ -23,7 +23,8 @@ add_definitions( -I${HEAD_DIR}/Keymap )
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#| Keymap Settings
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add_definitions(
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-DMODIFIER_MASK=tandy1000_modifierMask
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-DKEYINDEX_MASK=tandy1000_colemak
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-DMODIFIER_MASK=kaypro1_ModifierMask
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-DKEYINDEX_MASK=kaypro1_ColemakMap
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#-DKEYINDEX_MASK=kaypro1_DefaultMap
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)
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