From c7883cb5ae6f69ca7de1f4281c5661b41f98fb95 Mon Sep 17 00:00:00 2001 From: "J. Nick Koston" Date: Mon, 9 Feb 2026 12:06:38 -0600 Subject: [PATCH] [ld2450] Batch UART reads to reduce loop overhead (#13818) --- esphome/components/ld2450/ld2450.cpp | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/esphome/components/ld2450/ld2450.cpp b/esphome/components/ld2450/ld2450.cpp index ca8d918441..38ba0d7f96 100644 --- a/esphome/components/ld2450/ld2450.cpp +++ b/esphome/components/ld2450/ld2450.cpp @@ -276,8 +276,19 @@ void LD2450Component::dump_config() { } void LD2450Component::loop() { - while (this->available()) { - this->readline_(this->read()); + // Read all available bytes in batches to reduce UART call overhead. + int avail = this->available(); + uint8_t buf[MAX_LINE_LENGTH]; + while (avail > 0) { + size_t to_read = std::min(static_cast(avail), sizeof(buf)); + if (!this->read_array(buf, to_read)) { + break; + } + avail -= to_read; + + for (size_t i = 0; i < to_read; i++) { + this->readline_(buf[i]); + } } }