From 79f14b020ddafa358b75baf6dff603a83f3dad96 Mon Sep 17 00:00:00 2001
From: Klaus K Wilting <Klaus.K.Wilting@deutschebahn.com>
Date: Tue, 15 May 2018 10:36:11 +0200
Subject: [PATCH] TTGOv2.1 support added

---
 README.md         |  2 +-
 platformio.ini    | 14 ++++++++++++++
 src/hal/ttgov21.h | 28 ++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 src/hal/ttgov21.h

diff --git a/README.md b/README.md
index 7bdb8e6a..ebb259b5 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ Currently supported IoT boards:
 - Heltec LoRa-32 {1}
 - TTGOv1 {1}
 - TTGOv2 {1}{4}
-- TTGOv2.1 not yet, coming soon
+- TTGOv2.1 (not yet tested) {1}
 - Pycom LoPy {2}
 - Pycom LoPy4 {2}
 - Pycom FiPy {2}
diff --git a/platformio.ini b/platformio.ini
index 59b9fbc3..518e995c 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,6 +14,7 @@
 env_default = heltec_wifi_lora_32
 ;env_default = ttgov1
 ;env_default = ttgov2
+;env_default = ttgov21
 ;env_default = lopy
 ;env_default = lopy4
 ;env_default = fipy
@@ -80,6 +81,19 @@ build_flags =
     -Dttgov2
     -include "src/hal/ttgov2.h"
 
+[env:ttgov21]
+platform = espressif32
+framework = arduino
+board = esp32dev
+monitor_baud = 115200
+upload_speed = 921600
+lib_deps = 
+    ${common_env_data.lib_deps_display}
+build_flags = 
+    ${common_env_data.build_flags}
+    -Dttgov2
+    -include "src/hal/ttgov21.h"
+
 [env:fipy]
 platform = espressif32
 framework = arduino
diff --git a/src/hal/ttgov21.h b/src/hal/ttgov21.h
new file mode 100644
index 00000000..b5e38c94
--- /dev/null
+++ b/src/hal/ttgov21.h
@@ -0,0 +1,28 @@
+// Hardware related definitions for TTGO V2.1 Board
+// NOT YET TESTED
+
+#define CFG_sx1276_radio 1 // HPD13A LoRa SoC
+
+#define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C
+#define DISPLAY_FLIP  1 // rotated display
+#define HAS_LED 23
+
+// disable brownout detection (needed on TTGOv2 for battery powered operation)
+#define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
+
+// re-define pin definitions of pins_arduino.h
+#define PIN_SPI_SS    18 // ESP32 GPIO18 (Pin18) -- HPD13A NSS/SEL (Pin4) SPI Chip Select Input
+#define PIN_SPI_MOSI  27 // ESP32 GPIO27 (Pin27) -- HPD13A MOSI/DSI (Pin6) SPI Data Input
+#define PIN_SPI_MISO  19 // ESP32 GPIO19 (Pin19) -- HPD13A MISO/DSO (Pin7) SPI Data Output
+#define PIN_SPI_SCK   5  // ESP32 GPIO5 (Pin5)   -- HPD13A SCK (Pin5) SPI Clock Input
+
+// non arduino pin definitions
+#define RST   LMIC_UNUSED_PIN // connected to ESP32 RST/EN
+#define DIO0  26 // ESP32 GPIO26 wired on PCB to HPD13A
+#define DIO1  32 
+#define DIO2  33
+
+// Hardware pin definitions for TTGO V2 Board with OLED SSD1306 0,96" I2C Display
+#define OLED_RST U8X8_PIN_NONE // connected to CPU RST/EN
+#define OLED_SDA 21  // ESP32 GPIO4 (Pin4)   -- SD1306 D1+D2
+#define OLED_SCL 22 // ESP32 GPIO15 (Pin15) -- SD1306 D0
\ No newline at end of file