#include "util.h"
#include "matrix.h"
#include QMK_KEYBOARD_H
-#include "i2cmaster.h"
#ifdef DEBUG_MATRIX_SCAN_RATE
#include "timer.h"
#endif
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
+/*
+ * matrix state(1:on, 0:off)
+ * contains the raw values without debounce filtering of the last read cycle.
+ */
+static matrix_row_t raw_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
static void select_row(uint8_t row);
static uint8_t mcp23018_reset_loop;
+// static uint16_t mcp23018_reset_loop;
#ifdef DEBUG_MATRIX_SCAN_RATE
uint32_t matrix_timer;
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
+ raw_matrix[i] = 0;
for (uint8_t j=0; j < MATRIX_COLS; ++j) {
debounce_matrix[i * MATRIX_COLS + j] = 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 debounce_mask(matrix_row_t rawcols, 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];
+ matrix_row_t change = rawcols ^ raw_matrix[row];
+ raw_matrix[row] = rawcols;
+ for (uint8_t i = 0; i < MATRIX_COLS; ++i) {
+ if (debounce_matrix[row * MATRIX_COLS + i]) {
+ --debounce_matrix[row * MATRIX_COLS + i];
} else {
- result |= (1 << j);
+ result |= (1 << i);
}
- }
- 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;
}
}
+ return result;
+}
+
+matrix_row_t debounce_read_cols(uint8_t row) {
+ // Read the row without debouncing filtering and store it for later usage.
+ matrix_row_t cols = read_cols(row);
+ // Get the Debounce mask.
+ matrix_row_t mask = debounce_mask(cols, row);
+ // debounce the row and return the result.
+ return (cols & mask) | (matrix[row] & ~mask);;
}
uint8_t matrix_scan(void)
{
if (mcp23018_status) { // if there was an error
if (++mcp23018_reset_loop == 0) {
+ // if (++mcp23018_reset_loop >= 1300) {
// since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
// this will be approx bit more frequent than once per second
print("trying to reset mcp23018\n");
select_row(i + MATRIX_ROWS_PER_SIDE);
// we don't need a 30us delay anymore, because selecting a
// left-hand row requires more than 30us for i2c.
- 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;
+
+ // grab cols from left hand
+ matrix[i] = debounce_read_cols(i);
// grab cols from right hand
- mask = debounce_mask(i + MATRIX_ROWS_PER_SIDE);
- cols = (read_cols(i + MATRIX_ROWS_PER_SIDE) & mask) | (matrix[i + MATRIX_ROWS_PER_SIDE] & ~mask);
- debounce_report(cols ^ matrix[i + MATRIX_ROWS_PER_SIDE], i + MATRIX_ROWS_PER_SIDE);
- matrix[i + MATRIX_ROWS_PER_SIDE] = cols;
+ matrix[i + MATRIX_ROWS_PER_SIDE] = debounce_read_cols(i + MATRIX_ROWS_PER_SIDE);
+
unselect_rows();
}
return 0;
} else {
uint8_t data = 0;
- mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOB); if (mcp23018_status) goto out;
- mcp23018_status = i2c_start(I2C_ADDR_READ); if (mcp23018_status) goto out;
- data = i2c_readNak();
- data = ~data;
+ mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(GPIOB, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_start(I2C_ADDR_READ, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_read_nack(ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status < 0) goto out;
+ data = ~((uint8_t)mcp23018_status);
+ mcp23018_status = I2C_STATUS_SUCCESS;
out:
- i2c_stop();
+ i2c_stop(ERGODOX_EZ_I2C_TIMEOUT);
return data;
}
} else {
*/
static void unselect_rows(void)
{
- // unselect on mcp23018
- if (mcp23018_status) { // if there was an error
- // do nothing
- } else {
- // set all rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0xFF); if (mcp23018_status) goto out;
- out:
- i2c_stop();
- }
+ // no need to unselect on mcp23018, because the select step sets all
+ // the other row bits high, and it's not changing to a different
+ // direction
// unselect on teensy
// Hi-Z(DDR:0, PORT:0) to unselect
} else {
// set active row low : 0
// set other rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0xFF & ~(1<<row)); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_start(I2C_ADDR_WRITE, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(GPIOA, ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(0xFF & ~(1<<row), ERGODOX_EZ_I2C_TIMEOUT); if (mcp23018_status) goto out;
out:
- i2c_stop();
+ i2c_stop(ERGODOX_EZ_I2C_TIMEOUT);
}
} else {
// select on teensy
break;
case 11:
DDRD |= (1<<2);
- PORTD &= ~(1<<3);
+ PORTD &= ~(1<<2);
break;
case 12:
DDRD |= (1<<3);
}
}
}
-
projects / qmk_firmware.git / blobdiff