From aabb6f7c5964f896ca6e932ae9f5f3996d89448d Mon Sep 17 00:00:00 2001
From: kniuk <57300765+kniuk@users.noreply.github.com>
Date: Fri, 8 Oct 2021 03:19:08 +0200
Subject: [PATCH] AP_HAL_ChibiOS: add alt config GPIO to Matek F765-Wing

Based on new functionality introduced in #18753
---
 .../AP_HAL_ChibiOS/hwdef/MatekF765-Wing/hwdef.dat  | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/libraries/AP_HAL_ChibiOS/hwdef/MatekF765-Wing/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/MatekF765-Wing/hwdef.dat
index 92080364a4..df1b8cbbe5 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/MatekF765-Wing/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/MatekF765-Wing/hwdef.dat
@@ -119,10 +119,11 @@ PB8 UART5_RX UART5 NODMA
 PC7 TIM3_CH2 TIM3 RCININT PULLDOWN LOW
 PC6 USART6_TX USART6 NODMA
 
-# as an alternative config setup the RX6 pin as a uart. This allows
+# as an alternative config setup the RX6 pin as an uart. This allows
 # for bi-directional UART based receiver protocols such as FPort
 # without any extra hardware
 PC7 USART6_RX USART6 NODMA ALT(1)
+PC7 USART6_RX USART6 NODMA ALT(3)
 
 # UART7 (telem1)
 PE7 UART7_RX UART7
@@ -130,6 +131,17 @@ PE8 UART7_TX UART7
 PE10 UART7_CTS UART7
 PE9  UART7_RTS UART7
 
+# telem1-UART7 RTS and CTS as GPIO in alternative configs
+PE10 EXTERN_GPIO1 OUTPUT GPIO(1) ALT(2) # Cts7 pin as GPIO 1 (set RELAY_PINx = 1 to use it)
+PE9  EXTERN_GPIO2 OUTPUT GPIO(2) ALT(2) # Rts7 pin as GPIO 2 (set RELAY_PINx = 2 to use it)
+PE10 EXTERN_GPIO1 OUTPUT GPIO(1) ALT(3) # Cts7 pin as GPIO 1 (set RELAY_PINx = 1 to use it)
+PE9  EXTERN_GPIO2 OUTPUT GPIO(2) ALT(3) # Rts7 pin as GPIO 2 (set RELAY_PINx = 2 to use it)
+
+# alternative configs:
+# 1: bidirectional receiver protocol on RX6 pin
+# 2: extra GPIOs instead of Cts/Rts on UART7_CTS
+# 3: both 1 and 2 combined, GPIO numbers differ to avoid "Duplicate GPIO value" error while generating hwdef.h
+
 # UART8 (spare)
 PE0 UART8_RX UART8 NODMA
 PE1 UART8_TX UART8 NODMA