Nucleo F207ZG has no HSE by default, use HSI

Signed-off-by: Frederic Pillon <[email protected]>

variants/NUCLEO_F207ZG/variant.cpp

@@ -164,23 +164,22 @@ WEAK void SystemClock_Config(void)
   RCC_OscInitTypeDef RCC_OscInitStruct;
   RCC_ClkInitTypeDef RCC_ClkInitStruct;
 
-    /**Initializes the CPU, AHB and APB busses clocks
-    */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
-  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  /* Initializes the CPU, AHB and APB busses clocks */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
+  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+  RCC_OscInitStruct.HSICalibrationValue = 16;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
-  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
-  RCC_OscInitStruct.PLL.PLLM = 8;
-  RCC_OscInitStruct.PLL.PLLN = 240;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
+  RCC_OscInitStruct.PLL.PLLM = 13;
+  RCC_OscInitStruct.PLL.PLLN = 195;
   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
   RCC_OscInitStruct.PLL.PLLQ = 5;
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
   {
-    while(1);
+    _Error_Handler(__FILE__, __LINE__);
   }
 
-    /**Initializes the CPU, AHB and APB busses clocks
-    */
+  /* Initializes the CPU, AHB and APB busses clocks */
   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
@@ -190,15 +189,13 @@ WEAK void SystemClock_Config(void)
 
   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)
   {
-    while(1);
+    _Error_Handler(__FILE__, __LINE__);
   }
 
-    /**Configure the Systick interrupt time
-    */
+  /* Configure the Systick interrupt time */
   HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
 
-    /**Configure the Systick
-    */
+  /* Configure the Systick */
   HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
 
   /* SysTick_IRQn interrupt configuration */