Merge pull request #3473 from adustm/stm32f7_ethernet_dbg

Stm32f7 ethernet fix for IAR issue #3387

Author: 0xc0170

features/FEATURE_LWIP/lwip-interface/lwip-eth/arch/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F746NG/stm32f7_eth_init.c

@@ -7,6 +7,8 @@ void HAL_ETH_MspInit(ETH_HandleTypeDef* heth)
 {
     GPIO_InitTypeDef GPIO_InitStructure;
     if (heth->Instance == ETH) {
+        /* Disable DCache for STM32F7 family */
+        SCB_DisableDCache();
 
         /* Enable GPIOs clocks */
         __HAL_RCC_GPIOA_CLK_ENABLE();
@@ -78,4 +80,4 @@ void HAL_ETH_MspDeInit(ETH_HandleTypeDef* heth)
         /* Disable the Ethernet global Interrupt */
         NVIC_DisableIRQ(ETH_IRQn);
     }
-}
+}

features/FEATURE_LWIP/lwip-interface/lwip-eth/arch/TARGET_STM/TARGET_STM32F7/TARGET_DISCO_F769NI/stm32f7_eth_init.c

@@ -7,6 +7,8 @@ void HAL_ETH_MspInit(ETH_HandleTypeDef* heth)
 {
     GPIO_InitTypeDef GPIO_InitStructure;
     if (heth->Instance == ETH) {
+        /* Disable DCache for STM32F7 family */
+        SCB_DisableDCache();
 
         /* Enable GPIOs clocks */
         __HAL_RCC_GPIOA_CLK_ENABLE();
@@ -84,4 +86,4 @@ void HAL_ETH_MspDeInit(ETH_HandleTypeDef* heth)
         /* Disable the Ethernet global Interrupt */
         NVIC_DisableIRQ(ETH_IRQn);
     }
-}
+}

features/FEATURE_LWIP/lwip-interface/lwip-eth/arch/TARGET_STM/TARGET_STM32F7/TARGET_F746_F756/stm32f7_eth_init.c

@@ -7,6 +7,8 @@ void HAL_ETH_MspInit(ETH_HandleTypeDef* heth)
 {
     GPIO_InitTypeDef GPIO_InitStructure;
     if (heth->Instance == ETH) {
+        /* Disable DCache for STM32F7 family */
+        SCB_DisableDCache();
 
         /* Enable GPIOs clocks */
         __HAL_RCC_GPIOA_CLK_ENABLE();

features/FEATURE_LWIP/lwip-interface/lwip-eth/arch/TARGET_STM/TARGET_STM32F7/TARGET_NUCLEO_F767ZI/stm32f7_eth_init.c

@@ -7,6 +7,8 @@ void HAL_ETH_MspInit(ETH_HandleTypeDef* heth)
 {
     GPIO_InitTypeDef GPIO_InitStructure;
     if (heth->Instance == ETH) {
+        /* Disable DCache for STM32F7 family */
+        SCB_DisableDCache();
 
         /* Enable GPIOs clocks */
         __HAL_RCC_GPIOA_CLK_ENABLE();
@@ -84,4 +86,4 @@ void HAL_ETH_MspDeInit(ETH_HandleTypeDef* heth)
         /* Disable the Ethernet global Interrupt */
         NVIC_DisableIRQ(ETH_IRQn);
     }
-}
+}