From 6cdb4e4cf0940ac817fb49ef81f9e86acf561c43 Mon Sep 17 00:00:00 2001
From: Mark Qvist <mark@unsigned.io>
Date: Fri, 19 Jan 2024 00:10:24 +0100
Subject: [PATCH] Initial support for SX1276/8 with TCXO

---
 Config.h           |  7 +++++++
 Makefile           | 14 +++++++++++++-
 RNode_Firmware.ino |  5 +++++
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/Config.h b/Config.h
index 07927f4..9ecc47d 100644
--- a/Config.h
+++ b/Config.h
@@ -91,6 +91,10 @@
     #define HAS_PMU false
     #define HAS_NP false
 
+    #if defined(ENABLE_TCXO)
+        #define HAS_TCXO true
+    #endif
+
 	#if MCU_VARIANT == MCU_1284P
 		const int pin_cs = 4;
 		const int pin_reset = 3;
@@ -192,6 +196,9 @@
 			const int pin_cs = 18;
 			const int pin_reset = 23;
 			const int pin_dio = 26;
+			#if HAS_TCXO == true
+				const int pin_tcxo_enable = 33;
+			#endif
 			#if defined(EXTERNAL_LEDS)
 				const int pin_led_rx = 15;
 				const int pin_led_tx = 4;
diff --git a/Makefile b/Makefile
index 91cf74d..cf4aef1 100644
--- a/Makefile
+++ b/Makefile
@@ -73,6 +73,9 @@ firmware-lora32_v21:
 firmware-lora32_v21_extled:
 	arduino-cli compile --fqbn esp32:esp32:ttgo-lora32 -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x37\" \"-DEXTERNAL_LEDS=true\""
 
+firmware-lora32_v21_tcxo:
+	arduino-cli compile --fqbn esp32:esp32:ttgo-lora32 -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x37\" \"-DENABLE_TCXO=true\""
+
 firmware-heltec32_v2:
 	arduino-cli compile --fqbn esp32:esp32:heltec_wifi_lora_32_V2 -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x38\""
 
@@ -157,7 +160,7 @@ upload-featheresp32:
 
 release: release-all
 
-release-all: console-site spiffs-image release-rnode release-mega2560 release-tbeam release-lora32_v10 release-lora32_v20 release-lora32_v21 release-lora32_v10_extled release-lora32_v20_extled release-lora32_v21_extled release-featheresp32 release-genericesp32 release-heltec32_v2 release-heltec32_v2_extled release-rnode_ng_20 release-rnode_ng_21 release-hashes
+release-all: console-site spiffs-image release-rnode release-mega2560 release-tbeam release-lora32_v10 release-lora32_v20 release-lora32_v21 release-lora32_v10_extled release-lora32_v20_extled release-lora32_v21_extled firmware-lora32_v21_tcxo release-featheresp32 release-genericesp32 release-heltec32_v2 release-heltec32_v2_extled release-rnode_ng_20 release-rnode_ng_21 release-hashes
 
 release-hashes:
 	python ./release_hashes.py > ./Release/release.json
@@ -230,6 +233,15 @@ release-lora32_v21_extled:
 	zip --junk-paths ./Release/rnode_firmware_lora32v21_extled.zip ./Release/esptool/esptool.py ./Release/console_image.bin build/rnode_firmware_lora32v21.boot_app0 build/rnode_firmware_lora32v21.bin build/rnode_firmware_lora32v21.bootloader build/rnode_firmware_lora32v21.partitions
 	rm -r build
 
+release-lora32_v21_tcxo:
+	arduino-cli compile --fqbn esp32:esp32:ttgo-lora32 -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x37\" \"-DENABLE_TCXO=true\""
+	cp ~/.arduino15/packages/esp32/hardware/esp32/2.0.*/tools/partitions/boot_app0.bin build/rnode_firmware_lora32v21.boot_app0
+	cp build/esp32.esp32.ttgo-lora32/RNode_Firmware.ino.bin build/rnode_firmware_lora32v21.bin
+	cp build/esp32.esp32.ttgo-lora32/RNode_Firmware.ino.bootloader.bin build/rnode_firmware_lora32v21.bootloader
+	cp build/esp32.esp32.ttgo-lora32/RNode_Firmware.ino.partitions.bin build/rnode_firmware_lora32v21.partitions
+	zip --junk-paths ./Release/rnode_firmware_lora32v21_tcxo.zip ./Release/esptool/esptool.py ./Release/console_image.bin build/rnode_firmware_lora32v21.boot_app0 build/rnode_firmware_lora32v21.bin build/rnode_firmware_lora32v21.bootloader build/rnode_firmware_lora32v21.partitions
+	rm -r build
+
 release-heltec32_v2:
 	arduino-cli compile --fqbn esp32:esp32:heltec_wifi_lora_32_V2 -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x38\""
 	cp ~/.arduino15/packages/esp32/hardware/esp32/2.0.*/tools/partitions/boot_app0.bin build/rnode_firmware_heltec32v2.boot_app0
diff --git a/RNode_Firmware.ino b/RNode_Firmware.ino
index 5339564..dcddb56 100644
--- a/RNode_Firmware.ino
+++ b/RNode_Firmware.ino
@@ -72,6 +72,11 @@ void setup() {
     pinMode(pin_led_tx, OUTPUT);
   #endif
 
+  #if HAS_TCXO == true
+    pinMode(pin_tcxo_enable, OUTPUT);
+    digitalWrite(pin_tcxo_enable, HIGH);
+  #endif
+
   // Initialise buffers
   memset(pbuf, 0, sizeof(pbuf));
   memset(cmdbuf, 0, sizeof(cmdbuf));