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[zwave_proxy] Fix race condition sending zero home ID on reboot (#10848)

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Co-authored-by: Keith Burzinski <kbx81x@gmail.com>
This commit is contained in:
J. Nick Koston
2025-09-23 19:21:49 +00:00
committed by GitHub
co-authored by Keith Burzinski
parent bc7fc8df18
commit afda9500bf
2 changed files with 63 additions and 12 deletions
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esphome/components/zwave_proxy/zwave_proxy.cpp
+46 -2
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@@ -1,4 +1,5 @@
#include "zwave_proxy.h"
#include "esphome/core/application.h"
#include "esphome/core/helpers.h"
#include "esphome/core/log.h"
#include "esphome/core/util.h"
@@ -12,6 +13,7 @@ static constexpr uint8_t ZWAVE_COMMAND_GET_NETWORK_IDS = 0x20;
// GET_NETWORK_IDS response: [SOF][LENGTH][TYPE][CMD][HOME_ID(4)][NODE_ID][...]
static constexpr uint8_t ZWAVE_COMMAND_TYPE_RESPONSE = 0x01; // Response type field value
static constexpr uint8_t ZWAVE_MIN_GET_NETWORK_IDS_LENGTH = 9; // TYPE + CMD + HOME_ID(4) + NODE_ID + checksum
static constexpr uint32_t HOME_ID_TIMEOUT_MS = 100; // Timeout for waiting for home ID during setup
static uint8_t calculate_frame_checksum(const uint8_t *data, uint8_t length) {
// Calculate Z-Wave frame checksum
@@ -26,7 +28,44 @@ static uint8_t calculate_frame_checksum(const uint8_t *data, uint8_t length) {
ZWaveProxy::ZWaveProxy() { global_zwave_proxy = this; }
void ZWaveProxy::setup() { this->send_simple_command_(ZWAVE_COMMAND_GET_NETWORK_IDS); }
void ZWaveProxy::setup() {
this->setup_time_ = App.get_loop_component_start_time();
this->send_simple_command_(ZWAVE_COMMAND_GET_NETWORK_IDS);
}
float ZWaveProxy::get_setup_priority() const {
// Set up before API so home ID is ready when API starts
return setup_priority::BEFORE_CONNECTION;
}
bool ZWaveProxy::can_proceed() {
// If we already have the home ID, we can proceed
if (this->home_id_ready_) {
return true;
}
// Handle any pending responses
if (this->response_handler_()) {
ESP_LOGV(TAG, "Handled response during setup");
}
// Process UART data to check for home ID
this->process_uart_();
// Check if we got the home ID after processing
if (this->home_id_ready_) {
return true;
}
// Wait up to HOME_ID_TIMEOUT_MS for home ID response
const uint32_t now = App.get_loop_component_start_time();
if (now - this->setup_time_ > HOME_ID_TIMEOUT_MS) {
ESP_LOGW(TAG, "Timeout reading Home ID during setup");
return true; // Proceed anyway after timeout
}
return false; // Keep waiting
}
void ZWaveProxy::loop() {
if (this->response_handler_()) {
@@ -37,6 +76,11 @@ void ZWaveProxy::loop() {
this->api_connection_ = nullptr; // Unsubscribe if disconnected
}
this->process_uart_();
this->status_clear_warning();
}
void ZWaveProxy::process_uart_() {
while (this->available()) {
uint8_t byte;
if (!this->read_byte(&byte)) {
@@ -56,6 +100,7 @@ void ZWaveProxy::loop() {
// Extract the 4-byte Home ID starting at offset 4
// The frame parser has already validated the checksum and ensured all bytes are present
std::memcpy(this->home_id_.data(), this->buffer_.data() + 4, this->home_id_.size());
this->home_id_ready_ = true;
ESP_LOGI(TAG, "Home ID: %s",
format_hex_pretty(this->home_id_.data(), this->home_id_.size(), ':', false).c_str());
}
@@ -73,7 +118,6 @@ void ZWaveProxy::loop() {
}
}
}
this->status_clear_warning();
}
void ZWaveProxy::dump_config() { ESP_LOGCONFIG(TAG, "Z-Wave Proxy"); }