Drashna's split updates (#13350)

Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/handwired/tractyl_manuform/tm_sync.c

@@ -0,0 +1,132 @@
+/* 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/>.
+ */
+
+#ifdef SPLIT_TRANSACTION_IDS_KB
+
+#    include "tractyl_manuform.h"
+#    include "transactions.h"
+#    include <string.h>
+#    include "drivers/sensors/pmw3360.h"
+
+kb_runtime_config_t kb_state;
+kb_slave_data_t     kb_slave;
+
+void slave_state_sync(uint8_t initiator2target_buffer_size, const void* initiator2target_buffer, uint8_t target2initiator_buffer_size, void* target2initiator_buffer) {
+    if (target2initiator_buffer_size == sizeof(kb_slave)) {
+        memcpy(target2initiator_buffer, &kb_slave, sizeof(kb_slave));
+        if (kb_slave.mouse_x > 127) {
+            kb_slave.mouse_x -= 127;
+        } else if (kb_slave.mouse_x < -127) {
+            kb_slave.mouse_x += 127;
+        } else {
+            kb_slave.mouse_x = 0;
+        }
+
+        if (kb_slave.mouse_y > 127) {
+            kb_slave.mouse_y -= 127;
+        } else if (kb_slave.mouse_y < -127) {
+            kb_slave.mouse_y += 127;
+        } else {
+            kb_slave.mouse_y = 0;
+        }
+    }
+}
+
+void pointer_state_sync(uint8_t initiator2target_buffer_size, const void* initiator2target_buffer, uint8_t target2initiator_buffer_size, void* target2initiator_buffer) {
+    if (initiator2target_buffer_size == sizeof(kb_state)) {
+        memcpy(&kb_state, initiator2target_buffer, sizeof(kb_state));
+    }
+}
+
+void keyboard_post_init_kb(void) {
+    // Register keyboard state sync split transaction
+    transaction_register_rpc(RPC_ID_STATE_SYNC, pointer_state_sync);
+    transaction_register_rpc(RPC_ID_SLAVE_STATE, slave_state_sync);
+
+    keyboard_post_init_user();
+}
+
+void kb_state_update(void) {
+#    ifdef POINTING_DEVICE_ENABLE
+    if (is_keyboard_master() && !is_keyboard_left()) {
+        static uint16_t cpi = 0;
+        if (cpi != kb_state.device_cpi) {
+            cpi = kb_state.device_cpi;
+            pmw_set_cpi(cpi);
+        }
+    }
+#    endif
+}
+
+void kb_post_state_update(void) {
+#    ifdef POINTING_DEVICE_ENABLE
+    if (is_keyboard_master() && is_keyboard_left()) {
+        report_mouse_t temp_report = pointing_device_get_report();
+        temp_report.x              = kb_slave.mouse_x;
+        temp_report.y              = kb_slave.mouse_y;
+        pointing_device_set_report(temp_report);
+    }
+#    endif
+}
+
+void kb_state_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_runtime_config_t last_kb_state;
+        static uint32_t            last_sync        = 0;
+        static uint32_t            mouse_sync       = 0;
+        bool                       needs_sync       = false;
+
+        // Check if the state values are different
+        if (memcmp(&kb_state, &last_kb_state, sizeof(kb_runtime_config_t))) {
+            needs_sync = true;
+            memcpy(&last_kb_state, &kb_state, sizeof(kb_runtime_config_t));
+        }
+        // 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_STATE_SYNC, sizeof(kb_runtime_config_t), &kb_state)) {
+                last_sync = timer_read32();
+            }
+        }
+
+        if (is_keyboard_left()) {
+            if (timer_elapsed32(mouse_sync) >= 5) {
+                // always sync slave data, since it may contain device reports.
+                if (transaction_rpc_recv(RPC_ID_SLAVE_STATE, sizeof(kb_slave_data_t), &kb_slave)) {
+                    if (kb_slave.mouse_x >= -127 && kb_slave.mouse_x <= 127 && kb_slave.mouse_y >= -127 && kb_slave.mouse_y <= 127) {
+                        mouse_sync = timer_read32();
+                    }
+                }
+            }
+        }
+    }
+}
+
+void housekeeping_task_kb(void) {
+    // Update kb_state so we can send to slave
+    kb_state_update();
+
+    // Data sync from master to slave
+    kb_state_sync();
+
+    kb_post_state_update();
+}
+#endif