From bf3488def890e799f486806d000fb43df66e7622 Mon Sep 17 00:00:00 2001
From: Silvano Seva <silseva@fastwebnet.it>
Date: Sun, 25 Oct 2020 17:22:33 +0100
Subject: [PATCH] Improved check for rendering in progress in HX83XX display
 driver, now both chip select and DMA enable bit are verified

---
 platform/drivers/display/HX83XX_MDxx380.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/platform/drivers/display/HX83XX_MDxx380.c b/platform/drivers/display/HX83XX_MDxx380.c
index 32282b3a..23b7a2b4 100644
--- a/platform/drivers/display/HX83XX_MDxx380.c
+++ b/platform/drivers/display/HX83XX_MDxx380.c
@@ -401,8 +401,12 @@ void display_render()
 
 bool display_renderingInProgress()
 {
-    /* Rendering is in progress if display's chip select is low. */
-    return gpio_readPin(LCD_CS);
+    /*
+     * Rendering is in progress if display's chip select is low or a DMA
+     * transfer is in progress.
+     */
+    bool dmaBusy = (DMA2_Stream7->CR & DMA_SxCR_EN) ? true : false;
+    return (gpio_readPin(LCD_CS) == 0) || dmaBusy;
 }
 
 void *display_getFrameBuffer()