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Diffstat (limited to 'keyboards/massdrop/alt/matrix.c')
| -rw-r--r-- | keyboards/massdrop/alt/matrix.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/keyboards/massdrop/alt/matrix.c b/keyboards/massdrop/alt/matrix.c new file mode 100644 index 0000000000..892d38791c --- /dev/null +++ b/keyboards/massdrop/alt/matrix.c @@ -0,0 +1,182 @@ +/* +Copyright 2018 Massdrop Inc. + +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 "alt.h" + +#include "d51_util.h" +#include "debug.h" +#include "clks.h" +#include <string.h> + +matrix_row_t mlatest[MATRIX_ROWS]; +matrix_row_t mlast[MATRIX_ROWS]; +matrix_row_t mdebounced[MATRIX_ROWS]; + +uint8_t row_ports[] = { MATRIX_ROW_PORTS }; +uint8_t row_pins[] = { MATRIX_ROW_PINS }; +uint8_t col_ports[] = { MATRIX_COL_PORTS }; +uint8_t col_pins[] = { MATRIX_COL_PINS }; +uint32_t row_masks[2]; //NOTE: If more than PA PB used in the future, adjust code to accomodate + +__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) { +} + +void matrix_init(void) +{ + memset(mlatest, 0, MATRIX_ROWS * sizeof(matrix_row_t)); + memset(mlast, 0, MATRIX_ROWS * sizeof(matrix_row_t)); + memset(mdebounced, 0, MATRIX_ROWS * sizeof(matrix_row_t)); + + row_masks[PA] = 0; + row_masks[PB] = 0; + + uint8_t row; + for (row = 0; row < MATRIX_ROWS; row++) + { + PORT->Group[row_ports[row]].DIRCLR.reg = 1 << row_pins[row]; //Input + PORT->Group[row_ports[row]].OUTCLR.reg = 1 << row_pins[row]; //Low + PORT->Group[row_ports[row]].PINCFG[row_pins[row]].bit.INEN = 1; //Input Enable, + PORT->Group[row_ports[row]].PINCFG[row_pins[row]].bit.PULLEN = 1; //Pull Enable + row_masks[row_ports[row]] |= 1 << row_pins[row]; //Add pin to proper row mask + } + + uint8_t col; + for (col = 0; col < MATRIX_COLS; col++) + { + PORT->Group[col_ports[col]].DIRSET.reg = 1 << col_pins[col]; //Output + PORT->Group[col_ports[col]].OUTCLR.reg = 1 << col_pins[col]; //Low + } + + matrix_init_quantum(); +} + +#define MATRIX_SCAN_DELAY 10 //Delay after setting a col to output (in us) + +uint64_t mdebouncing = 0; +uint8_t matrix_scan(void) +{ + uint8_t mchanged; + uint8_t row; + uint8_t col; + uint32_t scans[2]; //PA PB + + if (CLK_get_ms() < mdebouncing) return 1; //mdebouncing == 0 when no debouncing active + + //DBG_1_OFF; //Profiling scans + + memset(mlatest, 0, MATRIX_ROWS * sizeof(matrix_row_t)); //Zero the result buffer + + for (col = 0; col < MATRIX_COLS; col++) + { + PORT->Group[col_ports[col]].OUTSET.reg = 1 << col_pins[col]; //Set col output + + CLK_delay_us(MATRIX_SCAN_DELAY); //Delay for output + + scans[PA] = PORT->Group[PA].IN.reg & row_masks[PA]; //Read PA row pins data + scans[PB] = PORT->Group[PB].IN.reg & row_masks[PB]; //Read PB row pins data + + PORT->Group[col_ports[col]].OUTCLR.reg = 1 << col_pins[col]; //Clear col output + + for (row = 0; row < MATRIX_ROWS; row++) + { + //Move scan bits from scans array into proper row bit locations + if (scans[row_ports[row]] & (1 << row_pins[row])) + mlatest[row] |= 1 << col; + } + } + + mchanged = 0; //Default to no matrix change since last + + for (row = 0; row < MATRIX_ROWS; row++) + { + if (mlast[row] != mlatest[row]) + mchanged = 1; + mlast[row] = mlatest[row]; + } + + if (!mchanged) + { + for (row = 0; row < MATRIX_ROWS; row++) + mdebounced[row] = mlatest[row]; + mdebouncing = 0; + } + else + { + //Begin or extend debounce on change + mdebouncing = CLK_get_ms() + DEBOUNCING_DELAY; + } + + //DBG_1_ON; //Profiling scans + + matrix_scan_quantum(); + + return 1; +} + +matrix_row_t matrix_get_row(uint8_t row) +{ + return mdebounced[row]; +} + +void matrix_print(void) +{ + char buf[(MATRIX_COLS+8)*(MATRIX_ROWS+1)] = "R C"; + char *pbuf = buf+3; + uint32_t cols; + uint32_t rows; + matrix_row_t row; + + for (cols = 1; cols <= MATRIX_COLS; cols++) + { + *pbuf = (cols%10)+48; + pbuf++; + } + *pbuf = '\r'; pbuf++; + *pbuf = '\n'; pbuf++; + + for (rows = 1; rows <= MATRIX_ROWS; rows++) + { + row = matrix_get_row(rows-1); + if (rows < 10) { *pbuf = rows+48; pbuf++; *pbuf = ' '; pbuf++; *pbuf = ' '; pbuf++; } + else { *pbuf = (rows/10)+48; pbuf++; *pbuf = (rows%10)+48; pbuf++; *pbuf = ' '; pbuf++; } + for (cols = 0; cols < MATRIX_COLS; cols++) + { + if (row & 1 << cols) *pbuf = 'X'; + else *pbuf = '.'; + pbuf++; + } + *pbuf = '\r'; pbuf++; + *pbuf = '\n'; pbuf++; + } + *pbuf = 0; + dprint(buf); +} |