From de00b97b86500c31c7308c9ae538f7882118b377 Mon Sep 17 00:00:00 2001
From: Simon Arlott <sa.me.uk>
Date: Fri, 20 Aug 2021 17:50:54 +0100
Subject: [PATCH] Durgod: Increase scan rate by using wait_us GPT timer

Lower the tick rate from 10kHz to 1kHz (otherwise all the extra interrupts
reduce the achievable scan rate). Enable the WAIT_US_TIMER using GPT TIM3.

Observed scan rate on the K320 is increased from 625Hz to 2090-2120Hz.
---
 keyboards/durgod/boards/DURGOD_STM32_F070/chconf.h  | 2 +-
 keyboards/durgod/boards/DURGOD_STM32_F070/mcuconf.h | 2 +-
 keyboards/durgod/dgk6x/config.h                     | 3 +++
 keyboards/durgod/dgk6x/halconf.h                    | 3 +++
 keyboards/durgod/k3x0/config.h                      | 3 +++
 keyboards/durgod/k3x0/halconf.h                     | 2 ++
 6 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/keyboards/durgod/boards/DURGOD_STM32_F070/chconf.h b/keyboards/durgod/boards/DURGOD_STM32_F070/chconf.h
index a7d95c51a9c2..d70f188178eb 100644
--- a/keyboards/durgod/boards/DURGOD_STM32_F070/chconf.h
+++ b/keyboards/durgod/boards/DURGOD_STM32_F070/chconf.h
@@ -21,7 +21,7 @@
 
 #pragma once
 
-#define CH_CFG_ST_FREQUENCY 10000
+#define CH_CFG_ST_FREQUENCY 1000
 
 #define CH_CFG_ST_TIMEDELTA 0
 
diff --git a/keyboards/durgod/boards/DURGOD_STM32_F070/mcuconf.h b/keyboards/durgod/boards/DURGOD_STM32_F070/mcuconf.h
index 6d67aa96aa9f..a24c1cee127d 100644
--- a/keyboards/durgod/boards/DURGOD_STM32_F070/mcuconf.h
+++ b/keyboards/durgod/boards/DURGOD_STM32_F070/mcuconf.h
@@ -85,7 +85,7 @@
  */
 #define STM32_GPT_USE_TIM1                  FALSE
 #define STM32_GPT_USE_TIM2                  FALSE
-#define STM32_GPT_USE_TIM3                  FALSE
+#define STM32_GPT_USE_TIM3                  TRUE
 #define STM32_GPT_USE_TIM14                 FALSE
 #define STM32_GPT_TIM1_IRQ_PRIORITY         2
 #define STM32_GPT_TIM2_IRQ_PRIORITY         2
diff --git a/keyboards/durgod/dgk6x/config.h b/keyboards/durgod/dgk6x/config.h
index 53f824b98eb6..56fbffe32649 100644
--- a/keyboards/durgod/dgk6x/config.h
+++ b/keyboards/durgod/dgk6x/config.h
@@ -22,6 +22,9 @@
 #define VENDOR_ID       0xD60D
 #define MANUFACTURER    Hoksi Technology
 
+#define USB_POLLING_INTERVAL_MS 1
+#define WAIT_US_TIMER           GPTD3
+
 /* COL2ROW, ROW2COL*/
 #define DIODE_DIRECTION ROW2COL
 
diff --git a/keyboards/durgod/dgk6x/halconf.h b/keyboards/durgod/dgk6x/halconf.h
index 1772f8e4104e..9c1c6e52805a 100644
--- a/keyboards/durgod/dgk6x/halconf.h
+++ b/keyboards/durgod/dgk6x/halconf.h
@@ -19,4 +19,7 @@
 #ifdef RGB_MATRIX_ENABLE
 #define HAL_USE_I2C TRUE
 #endif
+
+#define HAL_USE_GPT TRUE
+
 #include_next <halconf.h>
diff --git a/keyboards/durgod/k3x0/config.h b/keyboards/durgod/k3x0/config.h
index ef73a710164b..af543bb970b7 100644
--- a/keyboards/durgod/k3x0/config.h
+++ b/keyboards/durgod/k3x0/config.h
@@ -23,6 +23,9 @@
 #define VENDOR_ID       0xD60D
 #define MANUFACTURER    Hoksi Technology
 
+#define USB_POLLING_INTERVAL_MS 1
+#define WAIT_US_TIMER           GPTD3
+
 /* key matrix size (rows in specific keyboard variant) */
 #define MATRIX_COLS 16
 
diff --git a/keyboards/durgod/k3x0/halconf.h b/keyboards/durgod/k3x0/halconf.h
index fa20fe30a98e..d2a9d8c7c0b3 100644
--- a/keyboards/durgod/k3x0/halconf.h
+++ b/keyboards/durgod/k3x0/halconf.h
@@ -19,4 +19,6 @@
 #define HAL_USE_PAL                 TRUE
 #define PAL_USE_CALLBACKS           TRUE
 
+#define HAL_USE_GPT                 TRUE
+
 #include_next <halconf.h>