From e829dcac21575ec62a4822dc52c2927b2487de9b Mon Sep 17 00:00:00 2001 From: Bodmer Date: Wed, 27 Jan 2021 05:10:53 +0000 Subject: [PATCH] Avoid compiler optimising out register writes Precautionary change to avoid potential issues in future developments and during debug --- Processors/TFT_eSPI_ESP32.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Processors/TFT_eSPI_ESP32.c b/Processors/TFT_eSPI_ESP32.c index f41edc3..b41ab3c 100644 --- a/Processors/TFT_eSPI_ESP32.c +++ b/Processors/TFT_eSPI_ESP32.c @@ -31,8 +31,8 @@ volatile uint32_t* _spi_cmd = (volatile uint32_t*)(SPI_CMD_REG(SPI_PORT)); volatile uint32_t* _spi_user = (volatile uint32_t*)(SPI_USER_REG(SPI_PORT)); // Register writes only: - uint32_t* _spi_mosi_dlen = (uint32_t*)(SPI_MOSI_DLEN_REG(SPI_PORT)); - uint32_t* _spi_w = (uint32_t*)(SPI_W0_REG(SPI_PORT)); + volatile uint32_t* _spi_mosi_dlen = (volatile uint32_t*)(SPI_MOSI_DLEN_REG(SPI_PORT)); + volatile uint32_t* _spi_w = (volatile uint32_t*)(SPI_W0_REG(SPI_PORT)); #endif ////////////////////////////////////////////////////////////////////////////////////////