Link status checking

app/app.c

@@ -6,7 +6,6 @@ void app() {
 
     while(1) {
         process_LWIP();
-        // GPIO_ToggleBits(GPIOB, GPIO_Pin_7);
         delay(400);
     };
 }

bsp/CMakeLists.txt

@@ -4,6 +4,7 @@ set(LWIP_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/lwip/src/core)
 
 add_library(bsp STATIC    
     bsp.c
+    stm32f4xx_it.c
     lwip/lwip.c
     lwip/ethernetif.c
     lwip/stm32f4_eth_periph/src/stm32f4xx_hal_eth.c

bsp/bsp.c

@@ -1,26 +1,12 @@
 #include "misc.h"
 #include "bsp.h"
-#include "lwip.h"
 
 #define MAX_DELAY 0xFFFFFFFU
-#define INTERVAL 500
 
-static uint32_t EthStatus = 0;
+static lwip_status_t lwip_status = {.link_status = LINK_DOWN};
-static volatile uint32_t sysTick = 0;
-static volatile uint32_t cnt = 0;
 
-void SysTick_Handler(void)
+lwip_status_t* get_lwip_status() {
-{
+    return &lwip_status;
-    if (cnt == INTERVAL) {
-        GPIO_ToggleBits(GPIOB, GPIO_Pin_0);
-        cnt = 0;
-    }
-    sysTick++;
-    cnt++;
-}   
-
-uint32_t getSysTick() {
-    return sysTick;
 }
 
 void delay(uint32_t delay) {
@@ -32,21 +18,6 @@ void delay(uint32_t delay) {
     while((getSysTick() - tickStart) < wait) {}
 }
 
-void TIM2_IRQHandler()
-{
-    GPIO_ToggleBits(GPIOB, GPIO_Pin_7);
-    printf("Tim\r\n");
-    printf("Tim\r\n");
-    printf("Tim\r\n");
-    printf("Tim\r\n");
-    TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
-}
-
-void USART2_IRQHandler()
-{
-
-}  
-
 void gpio_init() {
 
     const uint16_t led_pins = GPIO_Pin_0 | GPIO_Pin_7 | GPIO_Pin_14;
@@ -92,19 +63,26 @@ void usart_init() {
 }
 
 void tim_init() {
-    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
+    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7, ENABLE);
-    TIM_TimeBaseInitTypeDef tim2;
+    TIM_TimeBaseInitTypeDef tim7;
 
-    tim2.TIM_Prescaler = 9000-1;
+    TIM_TimeBaseStructInit(&tim7);
-    tim2.TIM_CounterMode = TIM_CounterMode_Up;
-    tim2.TIM_Period = 5000;
-    tim2.TIM_ClockDivision = TIM_CKD_DIV1;
 
-    TIM_TimeBaseInit(TIM2, &tim2);
+    tim7.TIM_Prescaler = 9000-1;
+    tim7.TIM_CounterMode = TIM_CounterMode_Up;
+    tim7.TIM_Period = 2000;
+    tim7.TIM_ClockDivision = TIM_CKD_DIV1;
     
-    TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
+    TIM_TimeBaseInit(TIM7, &tim7);
-    NVIC_SetPriority(TIM2_IRQn, 0);
+    TIM_ClearITPendingBit(TIM7, TIM_IT_Update);
-    NVIC_EnableIRQ(TIM2_IRQn);
+
+    TIM_UpdateRequestConfig(TIM7, TIM_UpdateSource_Regular);
+
+    TIM_ITConfig(TIM7, TIM_IT_Update, ENABLE);
+    NVIC_SetPriority(TIM7_IRQn, 0);
+    NVIC_EnableIRQ(TIM7_IRQn);
+
+    TIM_Cmd(TIM7, ENABLE);
 }
 
 void dma_init() {
@@ -166,16 +144,15 @@ void eth_init() {
 
 void board_init() {
     uint32_t tick = SystemCoreClock/1000 - 1;
+    __enable_irq();
     SysTick_Config(tick);
     NVIC_EnableIRQ(SysTick_IRQn);
-    __enable_irq();
     gpio_init();
     usart_init();
-    tim_init();
     // dma_init();
     eth_init();
     init_LWIP();
-    TIM_Cmd(TIM2, ENABLE);
+    tim_init();
     printf("Controller is started...\r\n");
 }
 

bsp/bsp.h

@@ -7,9 +7,20 @@
 #include "stm32f4xx_rcc.h"
 #include "stm32f4xx_dma.h"
 #include "stm32f4xx_tim.h"
+#include "lwip/lwip.h"
+
+typedef enum  {
+  LINK_DOWN,
+  LINK_UP 
+} status_t;
+
+typedef struct {
+  uint8_t link_status;
+} lwip_status_t;
+
 void board_init();
 uint32_t getRegister();
 uint32_t getSysTick();
 void delay(uint32_t);
-
+lwip_status_t* get_lwip_status();
 #endif

bsp/lwip/ethernetif.c

@@ -57,7 +57,6 @@
 #include "lwip/ethip6.h"
 #include "ethernetif.h"
 #include <string.h>
-#include "bsp.h"
 #include <stdio.h>
 /* Private define ------------------------------------------------------------*/
 
@@ -363,16 +362,18 @@ void check_link_status(struct netif* netif) {
       if (netif_is_link_up(netif))
       {
           netif_set_down(netif);
-            printf("unplugged\r\n");
+          get_lwip_status()->link_status = LINK_DOWN;
           netif_set_link_down(netif);
       }
-    } else {
+    } 
+    else {
       // Link status = connected
       if (!netif_is_link_up(netif))
       {
-            printf("plugged\r\n");
+          get_lwip_status()->link_status = LINK_UP;
           NVIC_SystemReset();
       }
+      get_lwip_status()->link_status = LINK_UP;
     }
   }
 }

bsp/lwip/ethernetif.h

@@ -4,6 +4,7 @@
 #include "lwip/err.h"
 #include "lwip/netif.h"
 #include "stm32f4xx_hal_eth.h"
+#include "bsp.h"
 
 err_t ethernetif_init(struct netif *netif);
 

bsp/lwip/lwip.h

@@ -2,7 +2,6 @@
 #define LWIP_H
 
 void init_LWIP();
-
 void process_LWIP();
 
 #endif /* LWIP_H */

bsp/stm32f4xx_it.c

@@ -0,0 +1,35 @@
+#include "stm32f4xx_it.h"
+
+static volatile uint32_t sysTick = 0;
+
+void TIM7_IRQHandler()
+{
+    TIM_ClearITPendingBit(TIM7, TIM_IT_Update); 
+
+    if(get_lwip_status()->link_status == LINK_UP) {
+        GPIO_ToggleBits(GPIOB, GPIO_Pin_7); 
+    }
+    else {
+        GPIO_ResetBits(GPIOB, GPIO_Pin_7);
+    }
+}
+
+void USART2_IRQHandler()
+{
+
+}  
+
+void SysTick_Handler(void)
+{
+    static uint32_t cnt = 0;
+    if (cnt == 500) {
+        GPIO_ToggleBits(GPIOB, GPIO_Pin_0);
+        cnt = 0;
+    }
+    sysTick++;
+    cnt++;
+}   
+
+uint32_t getSysTick() {
+    return sysTick;
+}

bsp/stm32f4xx_it.h

@@ -0,0 +1,7 @@
+#ifndef STM32F4XX_H
+#define STM32F4XX_H
+#include "bsp.h"
+
+uint32_t getSysTick();
+
+#endif

toolchain-arm-none-eabi.cmake

@@ -16,7 +16,7 @@ set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
 set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
 
-set(shared_options "-Wall -Wextra -Os -mlittle-endian -mthumb -mcpu=cortex-m4 -mthumb-interwork -mfloat-abi=hard -mfpu=fpv4-sp-d16")
+set(shared_options "-Wall -Wextra -O2 -mlittle-endian -mthumb -mcpu=cortex-m4 -mthumb-interwork -mfloat-abi=hard -mfpu=fpv4-sp-d16")
 set(CMAKE_C_FLAGS_INIT "${shared_options}" CACHE INTERNAL "Initial options for C compiler.")
 set(CMAKE_CXX_FLAGS_INIT "${shared_options}" CACHE INTERNAL "Initial options for C++ compiler.")
 set(CMAKE_EXE_LINKER_FLAGS_INIT "-Wl,--gc-sections,--print-memory-usage,-Map=${PROJECT_BINARY_DIR}/${PROJECT_NAME}.map" CACHE INTERNAL "Initial options for executable linker.")