qmk_firmware

matrix.c (5136B)

---

 #include <stdint.h>
 #include <stdbool.h>
 #include <avr/io.h>
 #include "wait.h"
 #include "action_layer.h"
 #include "print.h"
 #include "debug.h"
 #include "util.h"
 #include "matrix.h"
 #include "hotdox.h"
 #include "left.h"
 
 /*
  * This constant define not debouncing time in msecs, but amount of matrix
  * scan loops which should be made to get stable debounced results.
  *
  * On Ergodox matrix scan rate is relatively low, because of slow I2C.
  * Now it's only 317 scans/second, or about 3.15 msec/scan.
  * According to Cherry specs, debouncing time is 5 msec.
  *
  * And so, there is no sense to have DEBOUNCE higher than 2.
  */
 
 #ifndef DEBOUNCE
 #   define DEBOUNCE	5
 #endif
 
 /* matrix state(1:on, 0:off) */
 static matrix_row_t matrix[MATRIX_ROWS];
 
 // Debouncing: store for each key the number of scans until it's eligible to
 // change.  When scanning the matrix, ignore any changes in keys that have
 // already changed in the last DEBOUNCE scans.
 static uint8_t debounce_matrix[MATRIX_ROWS * MATRIX_COLS];
 
 static matrix_row_t read_cols(uint8_t row);
 static void init_cols(void);
 static void unselect_rows(void);
 static void select_row(uint8_t row);
 
 __attribute__ ((weak))
 void matrix_init_user(void) {}
 
 __attribute__ ((weak))
 void matrix_scan_user(void) {}
 
 __attribute__ ((weak))
 void matrix_init_kb(void) {
   matrix_init_user();
 }
 
 __attribute__ ((weak))
 void matrix_scan_kb(void) {
   matrix_scan_user();
 }
 
 inline
 uint8_t matrix_rows(void)
 {
   return MATRIX_ROWS;
 }
 
 inline
 uint8_t matrix_cols(void)
 {
   return MATRIX_COLS;
 }
 
 void matrix_init(void)
 {
   unselect_rows();
   init_cols();
 
   //eeprom_update_word(EECONFIG_MAGIC, 0x0000);
 
   // initialize matrix state: all keys off
   for (uint8_t i=0; i < MATRIX_ROWS; i++) {
     matrix[i] = 0;
     for (uint8_t j=0; j < MATRIX_COLS; ++j) {
       debounce_matrix[i * MATRIX_COLS + j] = 0;
     }
   }
 
   matrix_init_kb();
 }
 
 void matrix_power_up(void) {
   unselect_rows();
   init_cols();
 
   // initialize matrix state: all keys off
   for (uint8_t i=0; i < MATRIX_ROWS; i++) {
     matrix[i] = 0;
   }
 }
 
 // Returns a matrix_row_t whose bits are set if the corresponding key should be
 // eligible to change in this scan.
 matrix_row_t debounce_mask(uint8_t row) {
   matrix_row_t result = 0;
   for (uint8_t j=0; j < MATRIX_COLS; ++j) {
     if (debounce_matrix[row * MATRIX_COLS + j]) {
       --debounce_matrix[row * MATRIX_COLS + j];
     } else {
       result |= (1 << j);
     }
   }
   return result;
 }
 
 // Report changed keys in the given row.  Resets the debounce countdowns
 // corresponding to each set bit in 'change' to DEBOUNCE.
 void debounce_report(matrix_row_t change, uint8_t row) {
   for (uint8_t i = 0; i < MATRIX_COLS; ++i) {
     if (change & (1 << i)) {
       debounce_matrix[row * MATRIX_COLS + i] = DEBOUNCE;
     }
   }
 }
 
 uint8_t matrix_scan(void)
 {
   left_scan();
 
   for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
     select_row(i);
     wait_us(30);  // without this wait read unstable value.
     matrix_row_t mask = debounce_mask(i);
     matrix_row_t cols = (read_cols(i) & mask) | (matrix[i] & ~mask);
     debounce_report(cols ^ matrix[i], i);
     matrix[i] = cols;
 
     unselect_rows();
   }
 
   matrix_scan_kb();
 
   return 1;
 }
 
 inline
 bool matrix_is_on(uint8_t row, uint8_t col)
 {
   return (matrix[row] & ((matrix_row_t)1<<col));
 }
 
 inline
 matrix_row_t matrix_get_row(uint8_t row)
 {
   return matrix[row];
 }
 
 void matrix_print(void)
 {
   print("\nr/c 0123456789ABCDEF\n");
   for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
     print_hex8(row); print(": ");
     print_bin_reverse16(matrix_get_row(row));
     print("\n");
   }
 }
 
 static void init_cols(void)
 {
   // Pro Micro
   gpio_set_pin_input_high(B0);
   gpio_set_pin_input_high(B1);
   gpio_set_pin_input_high(B2);
   gpio_set_pin_input_high(B3);
 
   gpio_set_pin_input_high(D2);
   gpio_set_pin_input_high(D3);
 
   gpio_set_pin_input_high(C6);
 
   left_init();
 }
 
 static matrix_row_t read_cols(uint8_t row)
 {
   matrix_row_t cols0 = 0x00, cols1 = 0x00;
 
   cols0 = left_read_cols();
 
   cols1 = (PINC&(1<<PC6) ? 0 : (1<<(0+7))) |
           (PIND&(1<<PD3) ? 0 : (1<<(1+7))) |
           (PIND&(1<<PD2) ? 0 : (1<<(2+7))) |
           (PINB&(1<<PB3) ? 0 : (1<<(3+7))) |
           (PINB&(1<<PB2) ? 0 : (1<<(4+7))) |
           (PINB&(1<<PB1) ? 0 : (1<<(5+7))) |
           (PINB&(1<<PB0) ? 0 : (1<<(6+7))) ;
 
   return (cols0 | cols1);
 }
 
 static void unselect_rows(void)
 {
   // Pro Micro
   gpio_set_pin_input(F0);
   gpio_set_pin_input(F1);
   gpio_set_pin_input(F4);
   gpio_set_pin_input(F5);
   gpio_set_pin_input(F6);
   gpio_set_pin_input(F7);
 
   left_unselect_rows();
 }
 
 static void select_row(uint8_t row)
 {
   // Pro Micro
   switch (row) {
   case 5:
     gpio_set_pin_output(F0);
     gpio_write_pin_low(F0);
     break;
   case 4:
     gpio_set_pin_output(F1);
     gpio_write_pin_low(F1);
     break;
   case 3:
     gpio_set_pin_output(F4);
     gpio_write_pin_low(F4);
     break;
   case 2:
     gpio_set_pin_output(F5);
     gpio_write_pin_low(F5);
     break;
   case 1:
     gpio_set_pin_output(F6);
     gpio_write_pin_low(F6);
     break;
   case 0:
     gpio_set_pin_output(F7);
     gpio_write_pin_low(F7);
     break;
   }
 
   left_select_row(row);
 }