fc660c/fc980c: clean up actuation point adjustment code (#21964)
Co-authored-by: Joel Challis <git@zvecr.com>
This commit is contained in:
Ryan
GitHub
parent
20cbe372a6
commit
f9ed1e3ebc
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@ -1,87 +0,0 @@
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/*
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Copyright 2017 Balz Guenat
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based on work by Jun Wako <wakojun@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "actuation_point.h"
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#include "i2c.h"
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///////////////////////////////////////////////////////////////////////////////
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//
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// AD5258 I2C digital potentiometer
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// http://www.analog.com/media/en/technical-documentation/data-sheets/AD5258.pdf
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//
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#define AD5258_ADDR 0b0011000
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#define AD5258_INST_RDAC 0x00
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#define AD5258_INST_EEPROM 0x20
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uint8_t read_rdac(void) {
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// read RDAC register
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i2c_start_write(AD5258_ADDR);
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i2c_master_write(AD5258_INST_RDAC);
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i2c_start_read(AD5258_ADDR);
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uint8_t ret = i2c_master_read(I2C_NACK);
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i2c_master_stop();
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return ret;
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};
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uint8_t read_eeprom(void) {
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i2c_start_write(AD5258_ADDR);
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i2c_master_write(AD5258_INST_EEPROM);
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i2c_start_read(AD5258_ADDR);
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uint8_t ret = i2c_master_read(I2C_NACK);
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i2c_master_stop();
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return ret;
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};
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void write_rdac(uint8_t rdac) {
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// write RDAC register:
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i2c_start_write(AD5258_ADDR);
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i2c_master_write(AD5258_INST_RDAC);
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i2c_master_write(rdac & 0x3F);
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i2c_master_stop();
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};
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void actuation_point_up(void) {
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// write RDAC register: lower value makes actuation point shallow
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uint8_t rdac = read_rdac();
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if (rdac == 0)
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write_rdac(0);
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else
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write_rdac(rdac-1);
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};
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void actuation_point_down(void) {
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// write RDAC register: higher value makes actuation point deep
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uint8_t rdac = read_rdac();
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if (rdac == 63)
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write_rdac(63);
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else
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write_rdac(rdac+1);
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};
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void adjust_actuation_point(int offset) {
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i2c_master_init();
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uint8_t rdac = read_eeprom() + offset;
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if (rdac > 63) { // protects from under and overflows
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if (offset > 0)
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write_rdac(63);
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else
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write_rdac(0);
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} else {
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write_rdac(rdac);
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}
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}
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52
keyboards/fc660c/ad5258.c
Normal file
52
keyboards/fc660c/ad5258.c
Normal file
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@ -0,0 +1,52 @@
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/*
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Copyright 2017 Balz Guenat
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based on work by Jun Wako <wakojun@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ad5258.h"
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#include "i2c_master.h"
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///////////////////////////////////////////////////////////////////////////////
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//
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// AD5258 I2C digital potentiometer
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// http://www.analog.com/media/en/technical-documentation/data-sheets/AD5258.pdf
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//
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#define AD5258_I2C_ADDRESS 0x18
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#define AD5258_INST_RDAC 0x00
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#define AD5258_INST_EEPROM 0x20
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void ad5258_init(void) {
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i2c_init();
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}
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uint8_t ad5258_read_rdac(void) {
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// read RDAC register
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uint8_t ret = 0;
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i2c_readReg(AD5258_I2C_ADDRESS, AD5258_INST_RDAC, &ret, 1, 100);
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return ret;
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}
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uint8_t ad5258_read_eeprom(void) {
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uint8_t ret = 0;
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i2c_readReg(AD5258_I2C_ADDRESS, AD5258_INST_EEPROM, &ret, 1, 100);
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return ret;
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}
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void ad5258_write_rdac(uint8_t rdac) {
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// write RDAC register:
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uint8_t data = rdac & 0x3F;
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i2c_writeReg(AD5258_I2C_ADDRESS, AD5258_INST_RDAC, &data, 1, 100);
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}
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28
keyboards/fc660c/ad5258.h
Normal file
28
keyboards/fc660c/ad5258.h
Normal file
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@ -0,0 +1,28 @@
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/*
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Copyright 2017 Balz Guenat
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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|
the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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||||||
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdint.h>
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void ad5258_init(void);
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uint8_t ad5258_read_rdac(void);
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uint8_t ad5258_read_eeprom(void);
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void ad5258_write_rdac(uint8_t rdac);
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@ -27,8 +27,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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* These options are also useful to firmware size reduction.
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* These options are also useful to firmware size reduction.
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*/
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*/
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#define USE_I2C
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/* disable debug print */
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/* disable debug print */
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//#define NO_DEBUG
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//#define NO_DEBUG
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@ -14,16 +14,47 @@ GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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*/
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#include "quantum.h"
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#include "fc660c.h"
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#ifdef ACTUATION_DEPTH_ADJUSTMENT
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#ifdef ACTUATION_DEPTH_ADJUSTMENT
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#include "actuation_point.h"
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#endif
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void matrix_init_kb(void) {
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void matrix_init_kb(void) {
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#ifdef ACTUATION_DEPTH_ADJUSTMENT
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adjust_actuation_point(ACTUATION_DEPTH_ADJUSTMENT);
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adjust_actuation_point(ACTUATION_DEPTH_ADJUSTMENT);
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#endif
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matrix_init_user();
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matrix_init_user();
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}
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}
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void actuation_point_up(void) {
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// write RDAC register: lower value makes actuation point shallow
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uint8_t rdac = ad5258_read_rdac();
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if (rdac == 0) {
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ad5258_write_rdac(0);
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} else {
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ad5258_write_rdac(rdac - 1);
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}
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}
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void actuation_point_down(void) {
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// write RDAC register: higher value makes actuation point deep
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uint8_t rdac = ad5258_read_rdac();
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if (rdac == 63) {
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ad5258_write_rdac(63);
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} else {
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ad5258_write_rdac(rdac + 1);
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}
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}
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void adjust_actuation_point(int offset) {
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ad5258_init();
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uint8_t rdac = ad5258_read_eeprom() + offset;
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if (rdac > 63) { // protects from under and overflows
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if (offset > 0) {
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ad5258_write_rdac(63);
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} else {
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ad5258_write_rdac(0);
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}
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} else {
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ad5258_write_rdac(rdac);
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}
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}
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#endif
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@ -17,13 +17,15 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#pragma once
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#pragma once
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#include <stdint.h>
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#include "quantum.h"
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#ifdef ACTUATION_DEPTH_ADJUSTMENT
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# include "ad5258.h"
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// see keymaps/actuation-point-example to see how these functions can be used.
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// see keymaps/actuation-point-example to see how these functions can be used.
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uint8_t read_rdac(void);
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uint8_t read_eeprom(void);
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void actuation_point_up(void);
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void actuation_point_up(void);
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void actuation_point_down(void);
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void actuation_point_down(void);
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// be careful with this.
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// be careful with this.
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void adjust_actuation_point(int offset);
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void adjust_actuation_point(int offset);
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#endif
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#include <util/twi.h>
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#include <avr/io.h>
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#include <stdlib.h>
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#include <avr/interrupt.h>
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#include <util/twi.h>
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#include <stdbool.h>
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#include "i2c.h"
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#ifdef USE_I2C
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// Limits the amount of we wait for any one i2c transaction.
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// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
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// 9 bits, a single transaction will take around 90μs to complete.
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//
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// (F_CPU/SCL_CLOCK) => # of μC cycles to transfer a bit
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// poll loop takes at least 8 clock cycles to execute
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#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8
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#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)
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volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
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static volatile uint8_t slave_buffer_pos;
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static volatile bool slave_has_register_set = false;
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// Wait for an i2c operation to finish
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inline static
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void i2c_delay(void) {
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uint16_t lim = 0;
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while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
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lim++;
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// easier way, but will wait slightly longer
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// _delay_us(100);
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}
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// Setup twi to run at 100kHz
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void i2c_master_init(void) {
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// no prescaler
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TWSR = 0;
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// Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
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// Check datasheets for more info.
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TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
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}
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// Start a transaction with the given i2c slave address. The direction of the
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// transfer is set with I2C_READ and I2C_WRITE.
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// returns: 0 => success
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// 1 => error
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uint8_t i2c_master_start(uint8_t address) {
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TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTA);
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i2c_delay();
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// check that we started successfully
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if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
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return 1;
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TWDR = address;
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TWCR = (1<<TWINT) | (1<<TWEN);
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i2c_delay();
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if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
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return 1; // slave did not acknowledge
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else
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return 0; // success
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}
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// Finish the i2c transaction.
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void i2c_master_stop(void) {
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TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
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uint16_t lim = 0;
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while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
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lim++;
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}
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// Write one byte to the i2c slave.
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// returns 0 => slave ACK
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// 1 => slave NACK
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uint8_t i2c_master_write(uint8_t data) {
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TWDR = data;
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TWCR = (1<<TWINT) | (1<<TWEN);
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i2c_delay();
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// check if the slave acknowledged us
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return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
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}
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// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
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// if ack=0 the acknowledge bit is not set.
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// returns: byte read from i2c device
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uint8_t i2c_master_read(int ack) {
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TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);
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i2c_delay();
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return TWDR;
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}
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void i2c_reset_state(void) {
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TWCR = 0;
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}
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void i2c_slave_init(uint8_t address) {
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TWAR = address << 0; // slave i2c address
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// TWEN - twi enable
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// TWEA - enable address acknowledgement
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// TWINT - twi interrupt flag
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// TWIE - enable the twi interrupt
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TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
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}
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ISR(TWI_vect);
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ISR(TWI_vect) {
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uint8_t ack = 1;
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switch(TW_STATUS) {
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|
||||||
case TW_SR_SLA_ACK:
|
|
||||||
// this device has been addressed as a slave receiver
|
|
||||||
slave_has_register_set = false;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case TW_SR_DATA_ACK:
|
|
||||||
// this device has received data as a slave receiver
|
|
||||||
// The first byte that we receive in this transaction sets the location
|
|
||||||
// of the read/write location of the slaves memory that it exposes over
|
|
||||||
// i2c. After that, bytes will be written at slave_buffer_pos, incrementing
|
|
||||||
// slave_buffer_pos after each write.
|
|
||||||
if(!slave_has_register_set) {
|
|
||||||
slave_buffer_pos = TWDR;
|
|
||||||
// don't acknowledge the master if this memory loctaion is out of bounds
|
|
||||||
if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
|
|
||||||
ack = 0;
|
|
||||||
slave_buffer_pos = 0;
|
|
||||||
}
|
|
||||||
slave_has_register_set = true;
|
|
||||||
} else {
|
|
||||||
i2c_slave_buffer[slave_buffer_pos] = TWDR;
|
|
||||||
BUFFER_POS_INC();
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
|
|
||||||
case TW_ST_SLA_ACK:
|
|
||||||
case TW_ST_DATA_ACK:
|
|
||||||
// master has addressed this device as a slave transmitter and is
|
|
||||||
// requesting data.
|
|
||||||
TWDR = i2c_slave_buffer[slave_buffer_pos];
|
|
||||||
BUFFER_POS_INC();
|
|
||||||
break;
|
|
||||||
|
|
||||||
case TW_BUS_ERROR: // something went wrong, reset twi state
|
|
||||||
TWCR = 0;
|
|
||||||
default:
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
// Reset everything, so we are ready for the next TWI interrupt
|
|
||||||
TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
@ -1,46 +0,0 @@
|
||||||
#pragma once
|
|
||||||
|
|
||||||
#include <stdint.h>
|
|
||||||
|
|
||||||
#ifndef F_CPU
|
|
||||||
#define F_CPU 16000000UL
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#define I2C_READ 1
|
|
||||||
#define I2C_WRITE 0
|
|
||||||
|
|
||||||
#define I2C_ACK 1
|
|
||||||
#define I2C_NACK 0
|
|
||||||
|
|
||||||
#define SLAVE_BUFFER_SIZE 0x10
|
|
||||||
|
|
||||||
// i2c SCL clock frequency
|
|
||||||
#define SCL_CLOCK 400000L
|
|
||||||
|
|
||||||
extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
|
|
||||||
|
|
||||||
void i2c_master_init(void);
|
|
||||||
uint8_t i2c_master_start(uint8_t address);
|
|
||||||
void i2c_master_stop(void);
|
|
||||||
uint8_t i2c_master_write(uint8_t data);
|
|
||||||
uint8_t i2c_master_read(int);
|
|
||||||
void i2c_reset_state(void);
|
|
||||||
void i2c_slave_init(uint8_t address);
|
|
||||||
|
|
||||||
|
|
||||||
static inline unsigned char i2c_start_read(unsigned char addr) {
|
|
||||||
return i2c_master_start((addr << 1) | I2C_READ);
|
|
||||||
}
|
|
||||||
|
|
||||||
static inline unsigned char i2c_start_write(unsigned char addr) {
|
|
||||||
return i2c_master_start((addr << 1) | I2C_WRITE);
|
|
||||||
}
|
|
||||||
|
|
||||||
// from SSD1306 scrips
|
|
||||||
extern unsigned char i2c_rep_start(unsigned char addr);
|
|
||||||
extern void i2c_start_wait(unsigned char addr);
|
|
||||||
extern unsigned char i2c_readAck(void);
|
|
||||||
extern unsigned char i2c_readNak(void);
|
|
||||||
extern unsigned char i2c_read(unsigned char ack);
|
|
||||||
|
|
||||||
#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak();
|
|
||||||
|
|
@ -11,7 +11,7 @@ NKRO_ENABLE = yes # Enable N-Key Rollover
|
||||||
# Optimize size but this may cause error "relocation truncated to fit"
|
# Optimize size but this may cause error "relocation truncated to fit"
|
||||||
#EXTRALDFLAGS = -Wl,--relax
|
#EXTRALDFLAGS = -Wl,--relax
|
||||||
|
|
||||||
|
QUANTUM_LIB_SRC += i2c_master.c
|
||||||
|
|
||||||
CUSTOM_MATRIX = yes
|
CUSTOM_MATRIX = yes
|
||||||
SRC += matrix.c \
|
SRC += matrix.c ad5258.c
|
||||||
actuation_point.c \
|
|
||||||
i2c.c
|
|
||||||
|
|
|
||||||
|
|
@ -1,87 +0,0 @@
|
||||||
/*
|
|
||||||
Copyright 2017 Balz Guenat
|
|
||||||
based on work by Jun Wako <wakojun@gmail.com>
|
|
||||||
|
|
||||||
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 "actuation_point.h"
|
|
||||||
#include "i2c.h"
|
|
||||||
|
|
||||||
///////////////////////////////////////////////////////////////////////////////
|
|
||||||
//
|
|
||||||
// AD5258 I2C digital potentiometer
|
|
||||||
// http://www.analog.com/media/en/technical-documentation/data-sheets/AD5258.pdf
|
|
||||||
//
|
|
||||||
#define AD5258_ADDR 0b0011000
|
|
||||||
#define AD5258_INST_RDAC 0x00
|
|
||||||
#define AD5258_INST_EEPROM 0x20
|
|
||||||
|
|
||||||
uint8_t read_rdac(void) {
|
|
||||||
// read RDAC register
|
|
||||||
i2c_start_write(AD5258_ADDR);
|
|
||||||
i2c_master_write(AD5258_INST_RDAC);
|
|
||||||
i2c_start_read(AD5258_ADDR);
|
|
||||||
uint8_t ret = i2c_master_read(I2C_NACK);
|
|
||||||
i2c_master_stop();
|
|
||||||
return ret;
|
|
||||||
};
|
|
||||||
|
|
||||||
uint8_t read_eeprom(void) {
|
|
||||||
i2c_start_write(AD5258_ADDR);
|
|
||||||
i2c_master_write(AD5258_INST_EEPROM);
|
|
||||||
i2c_start_read(AD5258_ADDR);
|
|
||||||
uint8_t ret = i2c_master_read(I2C_NACK);
|
|
||||||
i2c_master_stop();
|
|
||||||
return ret;
|
|
||||||
};
|
|
||||||
|
|
||||||
void write_rdac(uint8_t rdac) {
|
|
||||||
// write RDAC register:
|
|
||||||
i2c_start_write(AD5258_ADDR);
|
|
||||||
i2c_master_write(AD5258_INST_RDAC);
|
|
||||||
i2c_master_write(rdac & 0x3F);
|
|
||||||
i2c_master_stop();
|
|
||||||
};
|
|
||||||
|
|
||||||
void actuation_point_up(void) {
|
|
||||||
// write RDAC register: lower value makes actuation point shallow
|
|
||||||
uint8_t rdac = read_rdac();
|
|
||||||
if (rdac == 0)
|
|
||||||
write_rdac(0);
|
|
||||||
else
|
|
||||||
write_rdac(rdac-1);
|
|
||||||
};
|
|
||||||
|
|
||||||
void actuation_point_down(void) {
|
|
||||||
// write RDAC register: higher value makes actuation point deep
|
|
||||||
uint8_t rdac = read_rdac();
|
|
||||||
if (rdac == 63)
|
|
||||||
write_rdac(63);
|
|
||||||
else
|
|
||||||
write_rdac(rdac+1);
|
|
||||||
};
|
|
||||||
|
|
||||||
void adjust_actuation_point(int offset) {
|
|
||||||
i2c_master_init();
|
|
||||||
uint8_t rdac = read_eeprom() + offset;
|
|
||||||
if (rdac > 63) { // protects from under and overflows
|
|
||||||
if (offset > 0)
|
|
||||||
write_rdac(63);
|
|
||||||
else
|
|
||||||
write_rdac(0);
|
|
||||||
} else {
|
|
||||||
write_rdac(rdac);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
52
keyboards/fc980c/ad5258.c
Normal file
52
keyboards/fc980c/ad5258.c
Normal file
|
|
@ -0,0 +1,52 @@
|
||||||
|
/*
|
||||||
|
Copyright 2017 Balz Guenat
|
||||||
|
based on work by Jun Wako <wakojun@gmail.com>
|
||||||
|
|
||||||
|
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 "ad5258.h"
|
||||||
|
#include "i2c_master.h"
|
||||||
|
|
||||||
|
///////////////////////////////////////////////////////////////////////////////
|
||||||
|
//
|
||||||
|
// AD5258 I2C digital potentiometer
|
||||||
|
// http://www.analog.com/media/en/technical-documentation/data-sheets/AD5258.pdf
|
||||||
|
//
|
||||||
|
#define AD5258_I2C_ADDRESS 0x18
|
||||||
|
#define AD5258_INST_RDAC 0x00
|
||||||
|
#define AD5258_INST_EEPROM 0x20
|
||||||
|
|
||||||
|
void ad5258_init(void) {
|
||||||
|
i2c_init();
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t ad5258_read_rdac(void) {
|
||||||
|
// read RDAC register
|
||||||
|
uint8_t ret = 0;
|
||||||
|
i2c_readReg(AD5258_I2C_ADDRESS, AD5258_INST_RDAC, &ret, 1, 100);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t ad5258_read_eeprom(void) {
|
||||||
|
uint8_t ret = 0;
|
||||||
|
i2c_readReg(AD5258_I2C_ADDRESS, AD5258_INST_EEPROM, &ret, 1, 100);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ad5258_write_rdac(uint8_t rdac) {
|
||||||
|
// write RDAC register:
|
||||||
|
uint8_t data = rdac & 0x3F;
|
||||||
|
i2c_writeReg(AD5258_I2C_ADDRESS, AD5258_INST_RDAC, &data, 1, 100);
|
||||||
|
}
|
||||||
28
keyboards/fc980c/ad5258.h
Normal file
28
keyboards/fc980c/ad5258.h
Normal file
|
|
@ -0,0 +1,28 @@
|
||||||
|
/*
|
||||||
|
Copyright 2017 Balz Guenat
|
||||||
|
|
||||||
|
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/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
void ad5258_init(void);
|
||||||
|
|
||||||
|
uint8_t ad5258_read_rdac(void);
|
||||||
|
|
||||||
|
uint8_t ad5258_read_eeprom(void);
|
||||||
|
|
||||||
|
void ad5258_write_rdac(uint8_t rdac);
|
||||||
|
|
@ -30,8 +30,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
* These options are also useful to firmware size reduction.
|
* These options are also useful to firmware size reduction.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#define USE_I2C
|
|
||||||
|
|
||||||
/* disable debug print */
|
/* disable debug print */
|
||||||
//#define NO_DEBUG
|
//#define NO_DEBUG
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -15,16 +15,46 @@ You should have received a copy of the GNU General Public License
|
||||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include "quantum.h"
|
#include "fc980c.h"
|
||||||
|
|
||||||
#ifdef ACTUATION_DEPTH_ADJUSTMENT
|
#ifdef ACTUATION_DEPTH_ADJUSTMENT
|
||||||
#include "actuation_point.h"
|
|
||||||
#endif
|
|
||||||
|
|
||||||
void matrix_init_kb(void) {
|
void matrix_init_kb(void) {
|
||||||
#ifdef ACTUATION_DEPTH_ADJUSTMENT
|
|
||||||
adjust_actuation_point(ACTUATION_DEPTH_ADJUSTMENT);
|
adjust_actuation_point(ACTUATION_DEPTH_ADJUSTMENT);
|
||||||
#endif
|
|
||||||
|
|
||||||
matrix_init_user();
|
matrix_init_user();
|
||||||
}
|
}
|
||||||
|
|
||||||
|
void actuation_point_up(void) {
|
||||||
|
// write RDAC register: lower value makes actuation point shallow
|
||||||
|
uint8_t rdac = ad5258_read_rdac();
|
||||||
|
if (rdac == 0) {
|
||||||
|
ad5258_write_rdac(0);
|
||||||
|
} else {
|
||||||
|
ad5258_write_rdac(rdac - 1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void actuation_point_down(void) {
|
||||||
|
// write RDAC register: higher value makes actuation point deep
|
||||||
|
uint8_t rdac = ad5258_read_rdac();
|
||||||
|
if (rdac == 63) {
|
||||||
|
ad5258_write_rdac(63);
|
||||||
|
} else {
|
||||||
|
ad5258_write_rdac(rdac + 1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void adjust_actuation_point(int offset) {
|
||||||
|
ad5258_init();
|
||||||
|
uint8_t rdac = ad5258_read_eeprom() + offset;
|
||||||
|
if (rdac > 63) { // protects from under and overflows
|
||||||
|
if (offset > 0) {
|
||||||
|
ad5258_write_rdac(63);
|
||||||
|
} else {
|
||||||
|
ad5258_write_rdac(0);
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
ad5258_write_rdac(rdac);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
|
||||||
|
|
@ -17,13 +17,15 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
#pragma once
|
#pragma once
|
||||||
|
|
||||||
#include <stdint.h>
|
#include "quantum.h"
|
||||||
|
|
||||||
|
#ifdef ACTUATION_DEPTH_ADJUSTMENT
|
||||||
|
# include "ad5258.h"
|
||||||
|
|
||||||
// see keymaps/actuation-point-example to see how these functions can be used.
|
// see keymaps/actuation-point-example to see how these functions can be used.
|
||||||
uint8_t read_rdac(void);
|
|
||||||
uint8_t read_eeprom(void);
|
|
||||||
void actuation_point_up(void);
|
void actuation_point_up(void);
|
||||||
void actuation_point_down(void);
|
void actuation_point_down(void);
|
||||||
|
|
||||||
// be careful with this.
|
// be careful with this.
|
||||||
void adjust_actuation_point(int offset);
|
void adjust_actuation_point(int offset);
|
||||||
|
#endif
|
||||||
|
|
@ -1,162 +0,0 @@
|
||||||
#include <util/twi.h>
|
|
||||||
#include <avr/io.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <avr/interrupt.h>
|
|
||||||
#include <util/twi.h>
|
|
||||||
#include <stdbool.h>
|
|
||||||
#include "i2c.h"
|
|
||||||
|
|
||||||
#ifdef USE_I2C
|
|
||||||
|
|
||||||
// Limits the amount of we wait for any one i2c transaction.
|
|
||||||
// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
|
|
||||||
// 9 bits, a single transaction will take around 90μs to complete.
|
|
||||||
//
|
|
||||||
// (F_CPU/SCL_CLOCK) => # of μC cycles to transfer a bit
|
|
||||||
// poll loop takes at least 8 clock cycles to execute
|
|
||||||
#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8
|
|
||||||
|
|
||||||
#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)
|
|
||||||
|
|
||||||
volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
|
|
||||||
|
|
||||||
static volatile uint8_t slave_buffer_pos;
|
|
||||||
static volatile bool slave_has_register_set = false;
|
|
||||||
|
|
||||||
// Wait for an i2c operation to finish
|
|
||||||
inline static
|
|
||||||
void i2c_delay(void) {
|
|
||||||
uint16_t lim = 0;
|
|
||||||
while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
|
|
||||||
lim++;
|
|
||||||
|
|
||||||
// easier way, but will wait slightly longer
|
|
||||||
// _delay_us(100);
|
|
||||||
}
|
|
||||||
|
|
||||||
// Setup twi to run at 100kHz
|
|
||||||
void i2c_master_init(void) {
|
|
||||||
// no prescaler
|
|
||||||
TWSR = 0;
|
|
||||||
// Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
|
|
||||||
// Check datasheets for more info.
|
|
||||||
TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Start a transaction with the given i2c slave address. The direction of the
|
|
||||||
// transfer is set with I2C_READ and I2C_WRITE.
|
|
||||||
// returns: 0 => success
|
|
||||||
// 1 => error
|
|
||||||
uint8_t i2c_master_start(uint8_t address) {
|
|
||||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTA);
|
|
||||||
|
|
||||||
i2c_delay();
|
|
||||||
|
|
||||||
// check that we started successfully
|
|
||||||
if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
|
|
||||||
return 1;
|
|
||||||
|
|
||||||
TWDR = address;
|
|
||||||
TWCR = (1<<TWINT) | (1<<TWEN);
|
|
||||||
|
|
||||||
i2c_delay();
|
|
||||||
|
|
||||||
if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
|
|
||||||
return 1; // slave did not acknowledge
|
|
||||||
else
|
|
||||||
return 0; // success
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
// Finish the i2c transaction.
|
|
||||||
void i2c_master_stop(void) {
|
|
||||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
|
|
||||||
|
|
||||||
uint16_t lim = 0;
|
|
||||||
while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
|
|
||||||
lim++;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Write one byte to the i2c slave.
|
|
||||||
// returns 0 => slave ACK
|
|
||||||
// 1 => slave NACK
|
|
||||||
uint8_t i2c_master_write(uint8_t data) {
|
|
||||||
TWDR = data;
|
|
||||||
TWCR = (1<<TWINT) | (1<<TWEN);
|
|
||||||
|
|
||||||
i2c_delay();
|
|
||||||
|
|
||||||
// check if the slave acknowledged us
|
|
||||||
return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
|
|
||||||
// if ack=0 the acknowledge bit is not set.
|
|
||||||
// returns: byte read from i2c device
|
|
||||||
uint8_t i2c_master_read(int ack) {
|
|
||||||
TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);
|
|
||||||
|
|
||||||
i2c_delay();
|
|
||||||
return TWDR;
|
|
||||||
}
|
|
||||||
|
|
||||||
void i2c_reset_state(void) {
|
|
||||||
TWCR = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
void i2c_slave_init(uint8_t address) {
|
|
||||||
TWAR = address << 0; // slave i2c address
|
|
||||||
// TWEN - twi enable
|
|
||||||
// TWEA - enable address acknowledgement
|
|
||||||
// TWINT - twi interrupt flag
|
|
||||||
// TWIE - enable the twi interrupt
|
|
||||||
TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
|
|
||||||
}
|
|
||||||
|
|
||||||
ISR(TWI_vect);
|
|
||||||
|
|
||||||
ISR(TWI_vect) {
|
|
||||||
uint8_t ack = 1;
|
|
||||||
switch(TW_STATUS) {
|
|
||||||
case TW_SR_SLA_ACK:
|
|
||||||
// this device has been addressed as a slave receiver
|
|
||||||
slave_has_register_set = false;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case TW_SR_DATA_ACK:
|
|
||||||
// this device has received data as a slave receiver
|
|
||||||
// The first byte that we receive in this transaction sets the location
|
|
||||||
// of the read/write location of the slaves memory that it exposes over
|
|
||||||
// i2c. After that, bytes will be written at slave_buffer_pos, incrementing
|
|
||||||
// slave_buffer_pos after each write.
|
|
||||||
if(!slave_has_register_set) {
|
|
||||||
slave_buffer_pos = TWDR;
|
|
||||||
// don't acknowledge the master if this memory loctaion is out of bounds
|
|
||||||
if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
|
|
||||||
ack = 0;
|
|
||||||
slave_buffer_pos = 0;
|
|
||||||
}
|
|
||||||
slave_has_register_set = true;
|
|
||||||
} else {
|
|
||||||
i2c_slave_buffer[slave_buffer_pos] = TWDR;
|
|
||||||
BUFFER_POS_INC();
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
|
|
||||||
case TW_ST_SLA_ACK:
|
|
||||||
case TW_ST_DATA_ACK:
|
|
||||||
// master has addressed this device as a slave transmitter and is
|
|
||||||
// requesting data.
|
|
||||||
TWDR = i2c_slave_buffer[slave_buffer_pos];
|
|
||||||
BUFFER_POS_INC();
|
|
||||||
break;
|
|
||||||
|
|
||||||
case TW_BUS_ERROR: // something went wrong, reset twi state
|
|
||||||
TWCR = 0;
|
|
||||||
default:
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
// Reset everything, so we are ready for the next TWI interrupt
|
|
||||||
TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
@ -1,46 +0,0 @@
|
||||||
#pragma once
|
|
||||||
|
|
||||||
#include <stdint.h>
|
|
||||||
|
|
||||||
#ifndef F_CPU
|
|
||||||
#define F_CPU 16000000UL
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#define I2C_READ 1
|
|
||||||
#define I2C_WRITE 0
|
|
||||||
|
|
||||||
#define I2C_ACK 1
|
|
||||||
#define I2C_NACK 0
|
|
||||||
|
|
||||||
#define SLAVE_BUFFER_SIZE 0x10
|
|
||||||
|
|
||||||
// i2c SCL clock frequency
|
|
||||||
#define SCL_CLOCK 400000L
|
|
||||||
|
|
||||||
extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
|
|
||||||
|
|
||||||
void i2c_master_init(void);
|
|
||||||
uint8_t i2c_master_start(uint8_t address);
|
|
||||||
void i2c_master_stop(void);
|
|
||||||
uint8_t i2c_master_write(uint8_t data);
|
|
||||||
uint8_t i2c_master_read(int);
|
|
||||||
void i2c_reset_state(void);
|
|
||||||
void i2c_slave_init(uint8_t address);
|
|
||||||
|
|
||||||
|
|
||||||
static inline unsigned char i2c_start_read(unsigned char addr) {
|
|
||||||
return i2c_master_start((addr << 1) | I2C_READ);
|
|
||||||
}
|
|
||||||
|
|
||||||
static inline unsigned char i2c_start_write(unsigned char addr) {
|
|
||||||
return i2c_master_start((addr << 1) | I2C_WRITE);
|
|
||||||
}
|
|
||||||
|
|
||||||
// from SSD1306 scrips
|
|
||||||
extern unsigned char i2c_rep_start(unsigned char addr);
|
|
||||||
extern void i2c_start_wait(unsigned char addr);
|
|
||||||
extern unsigned char i2c_readAck(void);
|
|
||||||
extern unsigned char i2c_readNak(void);
|
|
||||||
extern unsigned char i2c_read(unsigned char ack);
|
|
||||||
|
|
||||||
#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak();
|
|
||||||
|
|
@ -14,11 +14,7 @@
|
||||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#ifndef CONFIG_USER_H
|
#pragma once
|
||||||
#define CONFIG_USER_H
|
|
||||||
|
|
||||||
|
|
||||||
// place overrides here
|
|
||||||
|
|
||||||
// higher value means deeper actuation point, less sensitive
|
// higher value means deeper actuation point, less sensitive
|
||||||
// be careful and only make small adjustments (steps of 1 or 2).
|
// be careful and only make small adjustments (steps of 1 or 2).
|
||||||
|
|
@ -27,5 +23,3 @@
|
||||||
// this should probably stay in the range +/-5.
|
// this should probably stay in the range +/-5.
|
||||||
#undef ACTUATION_DEPTH_ADJUSTMENT
|
#undef ACTUATION_DEPTH_ADJUSTMENT
|
||||||
#define ACTUATION_DEPTH_ADJUSTMENT +1
|
#define ACTUATION_DEPTH_ADJUSTMENT +1
|
||||||
|
|
||||||
#endif
|
|
||||||
|
|
|
||||||
|
|
@ -15,7 +15,6 @@ You should have received a copy of the GNU General Public License
|
||||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
*/
|
*/
|
||||||
#include QMK_KEYBOARD_H
|
#include QMK_KEYBOARD_H
|
||||||
#include "actuation_point.h"
|
|
||||||
|
|
||||||
enum custom_keycodes
|
enum custom_keycodes
|
||||||
{
|
{
|
||||||
|
|
@ -62,12 +61,12 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record)
|
||||||
}
|
}
|
||||||
case AP_READ_RDAC:
|
case AP_READ_RDAC:
|
||||||
{
|
{
|
||||||
xprintf("RDAC: %d", read_rdac());
|
xprintf("RDAC: %d", ad5258_read_rdac());
|
||||||
return false;
|
return false;
|
||||||
}
|
}
|
||||||
case AP_READ_EEPROM:
|
case AP_READ_EEPROM:
|
||||||
{
|
{
|
||||||
xprintf("EEPROM: %d", read_eeprom());
|
xprintf("EEPROM: %d", ad5258_read_eeprom());
|
||||||
return false;
|
return false;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -11,7 +11,7 @@ NKRO_ENABLE = yes # Enable N-Key Rollover
|
||||||
# Optimize size but this may cause error "relocation truncated to fit"
|
# Optimize size but this may cause error "relocation truncated to fit"
|
||||||
#EXTRALDFLAGS = -Wl,--relax
|
#EXTRALDFLAGS = -Wl,--relax
|
||||||
|
|
||||||
|
QUANTUM_LIB_SRC += i2c_master.c
|
||||||
|
|
||||||
CUSTOM_MATRIX = yes
|
CUSTOM_MATRIX = yes
|
||||||
SRC += matrix.c \
|
SRC += matrix.c ad5258.c
|
||||||
actuation_point.c \
|
|
||||||
i2c.c
|
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue