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Diffstat (limited to 'keyboards/converter/palm_usb/matrix.c')
| -rw-r--r-- | keyboards/converter/palm_usb/matrix.c | 398 |
1 files changed, 398 insertions, 0 deletions
diff --git a/keyboards/converter/palm_usb/matrix.c b/keyboards/converter/palm_usb/matrix.c new file mode 100644 index 000000000..49212f2ef --- /dev/null +++ b/keyboards/converter/palm_usb/matrix.c @@ -0,0 +1,398 @@ +/* +Copyright 2018 milestogo +with elements Copyright 2014 cy384 under a modified BSD license +building on qmk structure Copyright 2012 Jun Wako <wakojun@gmail.com> + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include QMK_KEYBOARD_H +#include "protocol/serial.h" +#include "timer.h" +#include "pincontrol.h" + + +/* + * Matrix Array usage: + * + * ROW: 12(4bits) + * COL: 8(3bits) + * + * +---------+ + * 0|00 ... 07| + * 1|00 ... 07| + * :| ... | + * :| ... | + * A| | + * B| | + * +---------+ + */ +static uint8_t matrix[MATRIX_ROWS]; + + +// we're going to need a sleep timer +static uint16_t last_activity ; +// and a byte to track duplicate up events signalling all keys up. +static uint16_t last_upKey ; +// serial device can disconnect. Check every MAXDROP characters. +static uint16_t disconnect_counter = 0; + + +// bitmath masks. +#define KEY_MASK 0b10000000 +#define COL_MASK 0b00000111 +#define ROW_MASK 0b01111000 + + +#define ROW(code) (( code & ROW_MASK ) >>3) +#define COL(code) ((code & COL_MASK) ) +#define KEYUP(code) ((code & KEY_MASK) >>7 ) + +static bool is_modified = false; + +__attribute__ ((weak)) +void matrix_init_kb(void) { + matrix_init_user(); +} + +__attribute__ ((weak)) +void matrix_scan_kb(void) { + matrix_scan_user(); +} + +__attribute__ ((weak)) +void matrix_init_user(void) { +} + +__attribute__ ((weak)) +void matrix_scan_user(void) { +} + +inline +uint8_t matrix_rows(void) +{ + return MATRIX_ROWS; +} + +inline +uint8_t matrix_cols(void) +{ + return MATRIX_COLS; +} + + +void pins_init(void) { + // set pins for pullups, Rts , power &etc. + + //print ("pins setup\n"); + pinMode(VCC_PIN, PinDirectionOutput); + digitalWrite(VCC_PIN, PinLevelLow); + +#if ( HANDSPRING == 0) + +#ifdef CY835 + pinMode(GND_PIN, PinDirectionOutput); + digitalWrite(GND_PIN, PinLevelLow); + + pinMode(PULLDOWN_PIN, PinDirectionOutput); + digitalWrite(PULLDOWN_PIN, PinLevelLow); +#endif + + pinMode(DCD_PIN, PinDirectionInput); + pinMode(RTS_PIN, PinDirectionInput); +#endif + +/* check that the other side isn't powered up. + test=digitalRead(DCD_PIN); + xprintf("b%02X:", test); + test=digitalRead(RTS_PIN); + xprintf("%02X\n", test); +*/ + +} + +uint8_t rts_reset(void) { + static uint8_t firstread ; +/* bounce RTS so device knows it is rebooted */ + +// On boot, we keep rts as input, then switch roles here +// on leaving sleep, we toggle the same way + + firstread=digitalRead(RTS_PIN); + // printf("r%02X:", firstread); + + pinMode(RTS_PIN, PinDirectionOutput); + + if (firstread == PinLevelHigh) { + digitalWrite(RTS_PIN, PinLevelLow); + } + _delay_ms(10); + digitalWrite(RTS_PIN, PinLevelHigh); + + +/* the future is Arm + if (palReadPad(RTS_PIN_IOPRT) == PinLevelLow) + { + _delay_ms(10); + palSetPadMode(RTS_PINn_IOPORT, PinDirectionOutput_PUSHPULL); + palSetPad(RTS_PORT, RTS_PIN); + } + else + { + palSetPadMode(RTS_PIN_RTS_PORT, PinDirectionOutput_PUSHPULL); + palSetPad(RTS_PORT, RTS_PIN); + palClearPad(RTS_PORT, RTS_PIN); + _delay_ms(10); + palSetPad(RTS_PORT, RTS_PIN); + } +*/ + + + _delay_ms(5); + //print("rts\n"); + return 1; +} + +uint8_t get_serial_byte(void) { + static uint8_t code; + while(1) { + code = serial_recv(); + if (code) { + debug_hex(code); debug(" "); + return code; + } + } +} + +uint8_t palm_handshake(void) { + // assumes something has seen DCD go high, we've toggled RTS + // and we now need to verify handshake. + // listen for up to 4 packets before giving up. + // usually I get the sequence FF FA FD + static uint8_t codeA=0; + + for (uint8_t i=0; i < 5; i++) { + codeA=get_serial_byte(); + if ( 0xFA == codeA) { + if( 0xFD == get_serial_byte()) { + return 1; + } + } + } + return 0; +} + +uint8_t palm_reset(void) { + print("@"); + rts_reset(); // shouldn't need to power cycle. + + if ( palm_handshake() ) { + last_activity = timer_read(); + return 1; + } else { + print("failed reset"); + return 0; + } + +} + +uint8_t handspring_handshake(void) { + // should be sent 15 ms after power up. + // listen for up to 4 packets before giving up. + static uint8_t codeA=0; + + for (uint8_t i=0; i < 5; i++) { + codeA=get_serial_byte(); + if ( 0xF9 == codeA) { + if( 0xFB == get_serial_byte()) { + return 1; + } + } + } + return 0; +} + +uint8_t handspring_reset(void) { + digitalWrite(VCC_PIN, PinLevelLow); + _delay_ms(5); + digitalWrite(VCC_PIN, PinLevelHigh); + + if ( handspring_handshake() ) { + last_activity = timer_read(); + disconnect_counter=0; + return 1; + } else { + print("-HSreset"); + return 0; + } +} + +void matrix_init(void) +{ + debug_enable = true; + //debug_matrix =true; + + serial_init(); // arguments all #defined + +#if (HANDSPRING == 0) + pins_init(); // set all inputs and outputs. +#endif + + print("power up\n"); + digitalWrite(VCC_PIN, PinLevelHigh); + + // wait for DCD strobe from keyboard - it will do this + // up to 3 times, then the board needs the RTS toggled to try again + +#if ( HANDSPRING == 1) + if ( handspring_handshake() ) { + last_activity = timer_read(); + } else { + print("failed handshake"); + _delay_ms(1000); + //BUG /should/ power cycle or toggle RTS & reset, but this usually works. + } + +#else /// Palm / HP device with DCD + while( digitalRead(DCD_PIN) != PinLevelHigh ) {;} + print("dcd\n"); + + rts_reset(); // at this point the keyboard should think all is well. + + if ( palm_handshake() ) { + last_activity = timer_read(); + } else { + print("failed handshake"); + _delay_ms(1000); + //BUG /should/ power cycle or toggle RTS & reset, but this usually works. + } + +#endif + + // initialize matrix state: all keys off + for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00; + + matrix_init_quantum(); + return; + + +} + + +uint8_t matrix_scan(void) +{ + uint8_t code; + code = serial_recv(); + if (!code) { +/* + disconnect_counter ++; + if (disconnect_counter > MAXDROP) { + // set all keys off + for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00; + } +*/ + // check if the keyboard is asleep. + if (timer_elapsed(last_activity) > SLEEP_TIMEOUT) { +#if(HANDSPRING ==0 ) + palm_reset(); +#else + handspring_reset(); +#endif + return 0; + } + + } + + last_activity = timer_read(); + disconnect_counter=0; // if we are getting serial data, we're connected. + + debug_hex(code); debug(" "); + + + switch (code) { + case 0xFD: // unexpected reset byte 2 + print("rstD "); + return 0; + case 0xFA: // unexpected reset + print("rstA "); + return 0; + } + + if (KEYUP(code)) { + if (code == last_upKey) { + // all keys are not pressed. + // Manual says to disable all modifiers left open now. + // but that could defeat sticky keys. + // BUG? dropping this byte. + last_upKey=0; + return 0; + } + // release + if (matrix_is_on(ROW(code), COL(code))) { + matrix[ROW(code)] &= ~(1<<COL(code)); + last_upKey=code; + } + } else { + // press + if (!matrix_is_on(ROW(code), COL(code))) { + matrix[ROW(code)] |= (1<<COL(code)); + + } + } + + matrix_scan_quantum(); + return code; +} + +bool matrix_is_modified(void) +{ + return is_modified; +} + +inline +bool matrix_has_ghost(void) +{ + return false; +} + +inline +bool matrix_is_on(uint8_t row, uint8_t col) +{ + return (matrix[row] & (1<<col)); +} + +inline +uint8_t matrix_get_row(uint8_t row) +{ + return matrix[row]; +} + +void matrix_print(void) +{ + print("\nr/c 01234567\n"); + for (uint8_t row = 0; row < matrix_rows(); row++) { + phex(row); print(": "); + pbin_reverse(matrix_get_row(row)); + print("\n"); + } +} + +uint8_t matrix_key_count(void) +{ + uint8_t count = 0; + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + count += bitpop(matrix[i]); + } + return count; +} |