qmk_firmware/users/drashna/transport_sync.c

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#ifdef SPLIT_TRANSACTION_IDS_USER
# include "transport_sync.h"
# include "transactions.h"
# include <string.h>
typedef struct {
bool oled_on;
uint16_t keymap_config;
} user_runtime_config_t;
user_runtime_config_t user_state;
void user_sync(uint8_t initiator2target_buffer_size, const void* initiator2target_buffer, uint8_t target2initiator_buffer_size, void* target2initiator_buffer) {
if (initiator2target_buffer_size == sizeof(user_state)) {
memcpy(&user_state, initiator2target_buffer, initiator2target_buffer_size);
}
}
void keyboard_post_init_transport_sync(void) {
// Register keyboard state sync split transaction
transaction_register_rpc(RPC_ID_USER_STATE_SYNC, user_sync);
}
void user_state_update(void) {
if (is_keyboard_master()) {
# ifdef OLED_DRIVER_ENABLE
user_state.oled_on = is_oled_on();
# endif
user_state.keymap_config = keymap_config.raw;
} else {
# ifdef OLED_DRIVER_ENABLE
if (user_state.oled_on) {
oled_on();
} else {
oled_off();
}
# endif
if (keymap_config.raw != user_state.keymap_config) {
keymap_config.raw = user_state.keymap_config;
}
}
}
void user_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 user_runtime_config_t last_user_state;
static uint32_t last_sync;
bool needs_sync = false;
// Check if the state values are different
if (memcmp(&user_state, &last_user_state, sizeof(user_state))) {
needs_sync = true;
memcpy(&last_user_state, &user_state, sizeof(user_state));
}
// Send to slave every 500ms regardless of state change
if (timer_elapsed32(last_sync) > 250) {
needs_sync = true;
}
// Perform the sync if requested
if (needs_sync) {
if (transaction_rpc_send(RPC_ID_USER_STATE_SYNC, sizeof(user_state), &user_state)) {
last_sync = timer_read32();
}
}
}
}
void housekeeping_task_user(void) {
// Update kb_state so we can send to slave
user_state_update();
// Data sync from master to slave
user_state_sync();
}
#endif