diff --git a/User/system/user_spi.c b/User/system/user_spi.c
index 524cdbf..fb3c9bd 100644
--- a/User/system/user_spi.c
+++ b/User/system/user_spi.c
@@ -153,7 +153,7 @@ void dac8568_spi_init(void)
     // 配置SPI3引脚 (PC10-SCK, PC12-MOSI)
     GPIO_InitStruct.Pin = GPIO_PIN_10 | GPIO_PIN_12;
     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
-    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Pull = GPIO_PULLUP;
     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
     GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
     HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
@@ -181,7 +181,7 @@ void dac8568_spi_init(void)
     hspi3.Init.CLKPolarity = SPI_POLARITY_LOW;      // CPOL = 0
     hspi3.Init.CLKPhase = SPI_PHASE_1EDGE;          // CPHA = 0
     hspi3.Init.NSS = SPI_NSS_SOFT;
-    hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;  // 提高SPI速度
+    hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32;  // 提高SPI速度
     hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB;
     hspi3.Init.TIMode = SPI_TIMODE_DISABLE;
     hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;