GD32的时钟旁路模式和OSCOUT引脚重映射模式

只看该作者 · 2023-1-6 16:16

开启GD32的时钟旁路模式，再打开OSCOUT引脚重映射模式，即PD1脚映射到该OSCOUT引脚。程序无法执行，且智能下载一次，第二次下载需要双击两次复位按键。但如果我使用内部高速时钟就PD1脚就可以成功映射到OSCOUT上，程序正常型。环境：keil5.37
芯片：GD32F105RCT6 64脚
库： HAL库

希望懂的朋友解答一下。谢谢！
void GpioInit(void)
{
   __HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_AFIO_REMAP_PD01_ENABLE();
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

HAL_GPIO_WritePin(GPIOD, GPIO_PIN_1, GPIO_PIN_RESET);  //OUT12_PIN=H_Level 控制EN12脚  2# 反馈信号
}//PD1引脚初始化

void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

/** Initializes the CPU, AHB and APB busses clocks
*/
//外部高速时钟：程序不能执行
// RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
// RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
// RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
// RCC_OscInitStruct.HSIState = RCC_HSI_ON;
// RCC_OscInitStruct.Prediv1Source = RCC_PREDIV1_SOURCE_HSE;
// RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
// RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
// RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL8;
// RCC_OscInitStruct.PLL2.PLL2State = RCC_PLL_NONE;

//内部高速时钟：程序正常运行
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL8;
RCC_OscInitStruct.PLL2.PLL2State = RCC_PLL_NONE;

if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
      Error_Handler();
}
/** 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;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
      Error_Handler();
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV8;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
      Error_Handler();
}
/** Configure the Systick interrupt time
*/
__HAL_RCC_PLLI2S_ENABLE();
}

只看该作者 · 2024-8-19 10:06

同问，调试时必应要开启 RCU_CTL |= RCU_CTL_HXTALEN;//RCU_CTL_HXTALBPS RCU_CTL_HXTALEN 外部高速时钟使能，RCU_CTL |= RCU_CTL_HXTALBPS 只开旁路时钟使能，无法达到时钟稳定导致程序卡住在等待时钟。同时出现调试工具无法连接的情况。猜测原因是没有时钟导致，请官方给一个标准旁路时钟配置