forked from mirrors/qmk_userspace
matrix scan & default keymap
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tmk
parent
20711b59e7
commit
8cfb3712d5
7 changed files with 467 additions and 38 deletions
186
mykey.c
186
mykey.c
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@ -27,6 +27,7 @@
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#include <util/delay.h>
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#include "usb_keyboard_debug.h"
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#include "print.h"
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#include "keymap.h"
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#define LED_CONFIG (DDRD |= (1<<6))
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#define LED_ON (PORTD &= ~(1<<6))
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@ -38,21 +39,127 @@ uint8_t number_keys[10]=
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uint16_t idle_count=0;
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//
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// scan matrix
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//
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uint8_t MAX_ROW = 9;
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// initialize ports for matrix
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void port_setup(void)
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{
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// Column: input w/pullup
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DDRB = 0x00;
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PORTB = 0xFF;
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// Row: Hi-Z(unselected)
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// PD:0,1,2,3,6,7
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// PC:6,7
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// PF:7
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DDRD = 0x00;
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PORTD = 0x00;
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DDRC = 0x00;
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PORTC = 0x00;
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DDRF = 0x00;
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PORTF = 0x00;
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}
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// select a row of matrix for read
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void select_row(uint8_t row)
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{
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switch (row) {
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case 0:
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DDRD = (1<<0);
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PORTD = 0x00;
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DDRC = 0x00;
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PORTC = 0x00;
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DDRF = 0x00;
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PORTF = 0x00;
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break;
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case 1:
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DDRD = (1<<1);
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PORTD = 0x00;
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DDRC = 0x00;
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PORTC = 0x00;
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DDRF = 0x00;
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PORTF = 0x00;
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break;
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case 2:
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DDRD = (1<<2);
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PORTD = 0x00;
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DDRC = 0x00;
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PORTC = 0x00;
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DDRF = 0x00;
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PORTF = 0x00;
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break;
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case 3:
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DDRD = (1<<3);
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PORTD = 0x00;
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DDRC = 0x00;
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PORTC = 0x00;
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DDRF = 0x00;
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PORTF = 0x00;
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break;
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case 4:
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DDRD = (1<<6);
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PORTD = 0x00;
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DDRC = 0x00;
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PORTC = 0x00;
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DDRF = 0x00;
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PORTF = 0x00;
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break;
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case 5:
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DDRD = (1<<7);
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PORTD = 0x00;
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DDRC = 0x00;
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PORTC = 0x00;
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DDRF = 0x00;
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PORTF = 0x00;
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break;
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case 6:
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DDRD = 0x00;
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PORTD = 0x00;
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DDRC = (1<<6);
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PORTC = 0x00;
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DDRF = 0x00;
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PORTF = 0x00;
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break;
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case 7:
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DDRD = 0x00;
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PORTD = 0x00;
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DDRC = (1<<7);
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PORTC = 0x00;
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DDRF = 0x00;
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PORTF = 0x00;
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break;
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case 8:
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DDRD = 0x00;
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PORTD = 0x00;
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DDRC = 0x00;
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PORTC = 0x00;
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DDRF = (1<<7);
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PORTF = 0x00;
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break;
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}
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}
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uint8_t read_col(void)
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{
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return PINB;
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}
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int main(void)
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{
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uint8_t b, d, mask, i, reset_idle;
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uint8_t b_prev=0xFF, d_prev=0xFF;
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uint8_t i, reset_idle;
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uint8_t prev_state[MAX_ROW];
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for (int i=0; i < MAX_ROW; i++) prev_state[i] = 0xFF;
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// set for 16 MHz clock
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CPU_PRESCALE(0);
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// Configure all port B and port D pins as inputs with pullup resistors.
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// See the "Using I/O Pins" page for details.
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// http://www.pjrc.com/teensy/pins.html
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DDRD = 0x00;
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DDRB = 0x00;
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PORTB = 0xFF;
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PORTD = 0xFF;
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port_setup();
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// Initialize the USB, and then wait for the host to set configuration.
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// If the Teensy is powered without a PC connected to the USB port,
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@ -76,32 +183,40 @@ int main(void)
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print("All Port B or Port D pins are inputs with pullup resistors.\n");
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print("Any connection to ground on Port B or D pins will result in\n");
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print("keystrokes sent to the PC (and debug messages here).\n");
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uint8_t col;
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uint8_t code;
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while (1) {
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// read all port B and port D pins
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b = PINB;
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d = PIND;
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// check if any pins are low, but were high previously
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mask = 1;
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reset_idle = 0;
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for (i=0; i<8; i++) {
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if (((b & mask) == 0) && (b_prev & mask) != 0) {
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//usb_keyboard_press(KEY_B, KEY_SHIFT);
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//usb_keyboard_press(number_keys[i], 0);
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print("Port B, bit ");
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phex(i);
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print("\n");
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reset_idle = 1;
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}
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if (((d & mask) == 0) && (d_prev & mask) != 0) {
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//usb_keyboard_press(KEY_D, KEY_SHIFT);
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//usb_keyboard_press(number_keys[i], 0);
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print("Port D, bit ");
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phex(i);
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print("\n");
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reset_idle = 1;
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}
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mask = mask << 1;
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}
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reset_idle = 0;
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for (uint8_t r=0; r < MAX_ROW; r++) {
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select_row(r);
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// without this read unstable value.
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_delay_us(30);
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col = read_col();
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if (col != prev_state[r]) {
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prev_state[r] = col;
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phex(r);
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print(": ");
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pbin(col);
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print("\n");
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for (int c = 0; c < 8; c++) {
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if (col & 1<<c) continue;
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code = get_keycode(r, c);
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phex(code);
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print("\n");
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usb_keyboard_press(code, 0);
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}
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reset_idle = 1;
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}
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}
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// if any keypresses were detected, reset the idle counter
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if (reset_idle) {
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// variables shared with interrupt routines must be
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@ -111,11 +226,10 @@ int main(void)
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idle_count = 0;
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sei();
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}
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// now the current pins will be the previous, and
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// wait a short delay so we're not highly sensitive
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// to mechanical "bounce".
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b_prev = b;
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d_prev = d;
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_delay_ms(2);
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}
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}
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