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Avoid compiler optimising out register writes

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Precautionary change to avoid potential issues in future developments and during debug
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Bodmer authored and GitHub committed 2021-01-27 05:10:53 +00:00
1 parent 25362ee893
commit e829dcac21
1 file changed
+2 -2
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Processors/TFT_eSPI_ESP32.c
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@@ -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
////////////////////////////////////////////////////////////////////////////////////////