From b2d6cfba0650b65d7baffb04ffa80cfbc9e20a61 Mon Sep 17 00:00:00 2001
From: Jonathan Swoboda <jonathan.swoboda>
Date: Tue, 19 Nov 2024 21:27:30 -0500
Subject: [PATCH] Run image cal manually after configuring radio

---
 esphome/components/sx127x/sx127x.cpp |  4 ++++
 esphome/components/sx127x/sx127x.h   | 13 +++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/esphome/components/sx127x/sx127x.cpp b/esphome/components/sx127x/sx127x.cpp
index 0b7de26554..ff22d575fe 100644
--- a/esphome/components/sx127x/sx127x.cpp
+++ b/esphome/components/sx127x/sx127x.cpp
@@ -205,6 +205,10 @@ void SX127x::configure() {
   this->set_mode_standby();
   delay(1);
 
+  // run image cal
+  this->write_register_(REG_IMAGE_CAL, AUTO_IMAGE_CAL_ON | IMAGE_CAL_START | TEMP_THRESHOLD_10C);
+  delay(10);
+
   // enable rx mode
   if (this->rx_start_) {
     this->set_mode_rx();
diff --git a/esphome/components/sx127x/sx127x.h b/esphome/components/sx127x/sx127x.h
index 7f4be737a6..20f00a200f 100644
--- a/esphome/components/sx127x/sx127x.h
+++ b/esphome/components/sx127x/sx127x.h
@@ -45,6 +45,7 @@ enum SX127xReg : uint8_t {
   REG_PACKET_CONFIG_2 = 0x31,
   REG_PAYLOAD_LENGTH = 0x32,
   REG_FIFO_THRESH = 0x35,
+  REG_IMAGE_CAL = 0x3B,
   REG_DIO_MAPPING1 = 0x40,
   REG_DIO_MAPPING2 = 0x41,
   REG_VERSION = 0x42,
@@ -80,6 +81,18 @@ enum SX127xSyncConfig : uint8_t {
   SYNC_ON = 0x10,
 };
 
+enum SX127xImageCal : uint8_t {
+  AUTO_IMAGE_CAL_ON = 0x80,
+  IMAGE_CAL_START = 0x40,
+  IMAGE_CAL_RUNNING = 0x20,
+  TEMP_CHANGE = 0x08,
+  TEMP_THRESHOLD_20C = 0x06,
+  TEMP_THRESHOLD_15C = 0x04,
+  TEMP_THRESHOLD_10C = 0x02,
+  TEMP_THRESHOLD_5C = 0x00,
+  TEMP_MONITOR_OFF = 0x01,
+};
+
 enum SX127xOpMode : uint8_t {
   MOD_FSK = 0x00,
   MOD_OOK = 0x20,