From 97b712da9866f9a1d7ef46a1ea5bf1184fdb41cb Mon Sep 17 00:00:00 2001
From: Jonathan Swoboda <154711427+swoboda1337@users.noreply.github.com>
Date: Thu, 26 Feb 2026 14:48:05 -0500
Subject: [PATCH] [cc1101] Transition through IDLE in begin_tx/begin_rx for
 reliable state changes (#14321)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 esphome/components/cc1101/cc1101.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/esphome/components/cc1101/cc1101.cpp b/esphome/components/cc1101/cc1101.cpp
index b6973da78d..51aa88b8f7 100644
--- a/esphome/components/cc1101/cc1101.cpp
+++ b/esphome/components/cc1101/cc1101.cpp
@@ -242,6 +242,9 @@ void CC1101Component::begin_tx() {
   if (this->gdo0_pin_ != nullptr) {
     this->gdo0_pin_->pin_mode(gpio::FLAG_OUTPUT);
   }
+  // Transition through IDLE to bypass CCA (Clear Channel Assessment) which can
+  // block TX entry when strobing from RX, and to ensure FS_AUTOCAL calibration
+  this->enter_idle_();
   if (!this->enter_tx_()) {
     ESP_LOGW(TAG, "Failed to enter TX state!");
   }
@@ -252,6 +255,8 @@ void CC1101Component::begin_rx() {
   if (this->gdo0_pin_ != nullptr) {
     this->gdo0_pin_->pin_mode(gpio::FLAG_INPUT);
   }
+  // Transition through IDLE to ensure FS_AUTOCAL calibration occurs
+  this->enter_idle_();
   if (!this->enter_rx_()) {
     ESP_LOGW(TAG, "Failed to enter RX state!");
   }