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[bsp/hc32] fix uart dma if gcc optimization level is not none

liuchao 7 months ago
parent
d141d148cf
commit
56c9bbe405
2 changed files with 2 additions and 2 deletions
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  1. 1 1
      bsp/hc32/libraries/hc32_drivers/drv_usart.c
  2. 1 1
      bsp/hc32/libraries/hc32_drivers/drv_usart_v2.c

+ 1 - 1
bsp/hc32/libraries/hc32_drivers/drv_usart.c
View File 

@@ -35,7 +35,7 @@
 
  * Local pre-processor symbols/macros ('#define')
 
  ******************************************************************************/
 
 #define DMA_CH_REG(reg_base, ch)                                               \
 
-    (*(uint32_t *)((uint32_t)(&(reg_base)) + ((ch) * 0x40UL)))
 
+    (*(volatile uint32_t *)((uint32_t)(&(reg_base)) + ((ch) * 0x40UL)))
 
 
 #define DMA_TRANS_SET_CNT(unit, ch)                                            \
 
     (READ_REG32(DMA_CH_REG((unit)->DTCTL0,(ch))) >> DMA_DTCTL_CNT_POS)

+ 1 - 1
bsp/hc32/libraries/hc32_drivers/drv_usart_v2.c
View File 

@@ -35,7 +35,7 @@
 
  * Local pre-processor symbols/macros ('#define')
 
  ******************************************************************************/
 
 #define DMA_CH_REG(reg_base, ch)                                               \
 
-    (*(uint32_t *)((uint32_t)(&(reg_base)) + ((ch) * 0x40UL)))
 
+    (*(volatile uint32_t *)((uint32_t)(&(reg_base)) + ((ch) * 0x40UL)))
 
 
 #define DMA_TRANS_SET_CNT(unit, ch)                                            \
 
     (READ_REG32(DMA_CH_REG((unit)->DTCTL0,(ch))) >> DMA_DTCTL_CNT_POS)