qmk-dactyl-manuform-a/keyboards/handwired/tractyl_manuform/tm_sync.c

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/* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.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 "tractyl_manuform.h"
#include "transactions.h"
#include <string.h>
#include "drivers/sensors/pmw3360.h"
kb_config_data_t kb_config;
kb_pointer_data_t kb_pointer;
void kb_config_sync_handler(uint8_t initiator2target_buffer_size, const void* initiator2target_buffer, uint8_t target2initiator_buffer_size, void* target2initiator_buffer) {
if (initiator2target_buffer_size == sizeof(kb_config)) {
memcpy(&kb_config, initiator2target_buffer, sizeof(kb_config));
}
}
void kb_pointer_sync_handler(uint8_t initiator2target_buffer_size, const void* initiator2target_buffer, uint8_t target2initiator_buffer_size, void* target2initiator_buffer) {
if (target2initiator_buffer_size == sizeof(kb_pointer)) {
memcpy(target2initiator_buffer, &kb_pointer, sizeof(kb_pointer));
}
}
void keyboard_pre_init_sync(void) {
memset(&kb_config, 0, sizeof(kb_config));
memset(&kb_pointer, 0, sizeof(kb_pointer));
}
void keyboard_post_init_kb(void) {
// Register keyboard state sync split transaction
transaction_register_rpc(RPC_ID_KB_CONFIG_SYNC, kb_config_sync_handler);
transaction_register_rpc(RPC_ID_POINTER_STATE_SYNC, kb_pointer_sync_handler);
keyboard_post_init_user();
}
void kb_config_update(void) {
if (is_keyboard_master()) {
static uint16_t cpi = 0;
if (cpi != kb_config.device_cpi) {
cpi = kb_config.device_cpi;
pmw_set_cpi(cpi);
}
}
}
void kb_config_sync(void) {
if (is_keyboard_master()) {
// Keep track of the last state, so that we can tell if we need to propagate to slave
static kb_config_data_t last_kb_config;
static uint32_t last_sync = 0;
bool needs_sync = false;
// Check if the state values are different
if (memcmp(&kb_config, &last_kb_config, sizeof(kb_config))) {
needs_sync = true;
memcpy(&last_kb_config, &kb_config, sizeof(kb_config));
}
// Send to slave every 500ms regardless of state change
if (timer_elapsed32(last_sync) > 500) {
needs_sync = true;
}
// Perform the sync if requested
if (needs_sync) {
if (transaction_rpc_send(RPC_ID_KB_CONFIG_SYNC, sizeof(kb_config), &kb_config)) {
last_sync = timer_read32();
}
}
}
}
void kb_pointer_sync(void) {
if (is_keyboard_master() && is_keyboard_left()) {
// Keep track of the last state, so that we can tell if we need to propagate to slave
static uint32_t last_sync = 0;
// Perform the sync if requested
if (timer_elapsed32(last_sync) >= 5) {
if (transaction_rpc_recv(RPC_ID_POINTER_STATE_SYNC, sizeof(kb_pointer), &kb_pointer)) {
last_sync = timer_read32();
}
}
}
}
void housekeeping_task_kb(void) {
// Update kb_config so we can send to slave
kb_config_update();
// Data sync from master to slave
kb_config_sync();
kb_pointer_sync();
}
void kb_pointer_sync_send(int8_t x, int8_t y) {
kb_pointer.mouse_x = x;
kb_pointer.mouse_y = y;
}
kb_pointer_data_t kb_pointer_sync_get(void) { return (kb_pointer_data_t){.mouse_x = kb_pointer.mouse_x, .mouse_y = kb_pointer.mouse_y}; }
void trackball_set_cpi(uint16_t cpi) {
kb_config.device_cpi = cpi;
if (!is_keyboard_left()) {
pmw_set_cpi(cpi);
}
}