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@@ -49,37 +49,58 @@ void HAL_MspInit(void)
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void SystemClock_Config(void)
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{
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- rt_err_t result;
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+ rt_err_t ret = RT_EOK;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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- /**Initializes the CPU, AHB and APB busses clocks
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- */
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+
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+#if !defined(RT_USING_HSI)
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+ /* Initializes the CPU, AHB and APB busses clocks */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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- RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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+ RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
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- RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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- RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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- RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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- RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
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- result = HAL_RCC_OscConfig(&RCC_OscInitStruct);
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- RT_ASSERT(result == HAL_OK);
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- /**Initializes the CPU, AHB and APB busses clocks
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- */
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- RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
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- RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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- RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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+ RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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+ RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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+ RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
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+ ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
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+ RT_ASSERT(ret == HAL_OK);
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+
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+ /* Initializes the CPU, AHB and APB busses clocks */
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+ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK |
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+ RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
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+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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- result = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
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- RT_ASSERT(result == HAL_OK);
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- /**Configure the Systick interrupt time
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- */
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+ ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
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+ RT_ASSERT(ret == HAL_OK);
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+
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HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq() / RT_TICK_PER_SECOND);
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- /**Configure the Systick
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- */
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HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
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- /* SysTick_IRQn interrupt configuration */
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HAL_NVIC_SetPriority(SysTick_IRQn, 15, 0);
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+#else
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+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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+ RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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+ RCC_OscInitStruct.HSICalibrationValue = 16;
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+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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+ RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
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+ RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL16;
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+ ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
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+ RT_ASSERT(ret == HAL_OK);
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+
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+ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |
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+ RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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+ RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
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+ RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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+ ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
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+ RT_ASSERT(ret == HAL_OK);
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+
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+ HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/RT_TICK_PER_SECOND);
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+ HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
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+ HAL_NVIC_SetPriority(SysTick_IRQn, 15, 0);
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+#endif
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}
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/**
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