From 42eeb315a5424fc576239b7e57061affc2ffa8ab Mon Sep 17 00:00:00 2001 From: Michael Schwingen Date: Sun, 23 Aug 2020 01:02:16 +0200 Subject: [Keyboard] add support for ModelM USB board (#9846) * add support for ModelM USB board * EMI improvement: remove unnecessary toggling of MOSI pin * address review comments * Update keyboards/mschwingen/modelm/rules.mk Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com> * Update keyboards/mschwingen/modelm/rules.mk Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com> * Update keyboards/mschwingen/modelm/config.h Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com> * Update keyboards/mschwingen/modelm/config.h Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com> * Update keyboards/mschwingen/modelm/rules.mk Co-authored-by: Drashna Jaelre * Update keyboards/mschwingen/modelm/keymaps/default/keymap.c Co-authored-by: Drashna Jaelre * update printf usage * add comment * EMI improvement: remove unnecessary toggling of MOSI signal * remove trailing space * use shorter macros as suggested in review by noroadsleft, re-format table to line up columns * Update keyboards/mschwingen/modelm/config.h Co-authored-by: Ryan * Update keyboards/mschwingen/modelm/rules.mk Co-authored-by: Ryan * Update keyboards/mschwingen/modelm/rules.mk Co-authored-by: Ryan * Update keyboards/mschwingen/modelm/rules.mk Co-authored-by: Ryan * Update keyboards/mschwingen/modelm/README.md Co-authored-by: Ryan * Update keyboards/mschwingen/modelm/README.md Co-authored-by: Ryan * Apply suggestions from code review use spi_read from core insteads of our own copy Co-authored-by: Ryan * include spi_master.c to use spi_read() * Update keyboards/mschwingen/modelm/README.md Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com> * Apply suggestions from code review: correct indenting in keymap Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com> * Apply suggestions from code review use automatic variant defines from makefile instead of defining our own Co-authored-by: Drashna Jaelre * Update keyboards/mschwingen/modelm/rules.mk: use QUANTUM_LIB_SRC for uart.c Co-authored-by: Drashna Jaelre Co-authored-by: Michael Schwingen Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com> Co-authored-by: Drashna Jaelre Co-authored-by: Ryan --- keyboards/mschwingen/modelm/matrix.c | 117 +++++++++++++++++++++++++++++++++++ 1 file changed, 117 insertions(+) create mode 100644 keyboards/mschwingen/modelm/matrix.c (limited to 'keyboards/mschwingen/modelm/matrix.c') diff --git a/keyboards/mschwingen/modelm/matrix.c b/keyboards/mschwingen/modelm/matrix.c new file mode 100644 index 000000000..ef725a61e --- /dev/null +++ b/keyboards/mschwingen/modelm/matrix.c @@ -0,0 +1,117 @@ +/* + * Copyright 2020 Michael Schwingen + + * 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 . + */ +#include +#include +#include "util.h" +#include "matrix.h" +#include "debounce.h" +#include "quantum.h" +#include "spi_master.h" +#include "print.h" +#include "modelm.h" + +#define DEBUG 0 + +#define SPI_TIMEOUT 100 + +/* Keyboard Matrix Assignments */ +static uint16_t row_bits[MATRIX_ROWS] = { + 0x4000, 0x8000, 0x2000, 0x1000, 0x0800, 0x0400, 0x0100, 0x0200, + 0x0040, 0x0080, 0x0020, 0x0010, 0x0008, 0x0004, 0x0001, 0x0002}; + +static const pin_t col_pins[MATRIX_COLS] = {D1, D4, D7, B4, F7, F6, F5, F4}; + +static void select_col(uint8_t col) { + setPinOutput(col_pins[col]); + writePinLow(col_pins[col]); +} + +static void unselect_col(uint8_t col) { setPinInputHigh(col_pins[col]); } + +static void unselect_cols(void) { + for (uint8_t x = 0; x < MATRIX_COLS; x++) { + setPinInputHigh(col_pins[x]); + } +} + +static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) { + uint16_t row_data; + bool matrix_changed = false; + + // Select col and wait for col selecton to stabilize + select_col(current_col); + matrix_io_delay(); + + writePinLow(SR_LOAD_PIN); + writePinHigh(SR_LOAD_PIN); + + row_data = spi_read() << 8; + row_data |= spi_read(); + +#if DEBUG + phex(~row_data); + uprint(" "); +#endif + // For each row... + for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) { + // Store last value of row prior to reading + matrix_row_t last_row_value = current_matrix[row_index]; + matrix_row_t current_row_value = last_row_value; + + // Check row pin state + if ((row_data & row_bits[row_index]) == 0) { + // Pin LO, set col bit + current_row_value |= (MATRIX_ROW_SHIFTER << current_col); + } else { + // Pin HI, clear col bit + current_row_value &= ~(MATRIX_ROW_SHIFTER << current_col); + } + + // Determine if the matrix changed state + if ((last_row_value != current_row_value)) { + matrix_changed = true; + current_matrix[row_index] = current_row_value; + } + } + + // Unselect col + unselect_col(current_col); + + return matrix_changed; +} + +void matrix_init_custom(void) { + unselect_cols(); + + // set 4MHz SPI clock + SPSR = 0; + SPCR = _BV(SPE) | _BV(MSTR) | _BV(CPOL); +} + +bool matrix_scan_custom(matrix_row_t current_matrix[]) { + bool changed = false; + +#if DEBUG + uprint("\r\nScan: "); +#endif + // Set col, read rows + for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) { + changed |= read_rows_on_col(current_matrix, current_col); + } + update_layer_leds(); + return changed; +} -- cgit v1.2.3