请问stm32f103的spi1换成spi2应该怎样修改程序

1楼-- · 2019-07-14 20:44

能帮我看一下，我配置的时钟和spi2有哪里不妥吗？
unsigned char RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus;
    /* RCC system reset(for debug purpose) */
    RCC_DeInit();
    /* Enable HSE */
    RCC_HSEConfig(RCC_HSE_ON);
    /* Wait till HSE is ready */
    HSEStartUpStatus = RCC_WaitForHSEStartUp();
    if(HSEStartUpStatus == SUCCESS)
    {
      /* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
      /* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
      /* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* ADCCLK = PCLK2/4 */
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
      /* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
      /* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
      /* PLLCLK = 8MHz * 9 / 2 = 36 MHz */
   RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
      /* Enable PLL */
RCC_PLLCmd(ENABLE);
      /* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET){};
      /* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
      /* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08){};
    }
else
return FALSE;

/* Enable peripheral clocks --------------------------------------------------*/
    /* Enable I2C1 and I2C1 clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2 | /*RCC_APB1Periph_I2C2 | */RCC_APB1Periph_TIM2, ENABLE);
    /* Enable GPIOA GPIOB SPI1 and USART1 clocks */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB
| RCC_APB2Periph_GPIOC |RCC_APB2Periph_GPIOF| RCC_APB2Periph_USART1
| RCC_APB2Periph_ADC1
| RCC_APB2Periph_AFIO, ENABLE);
return TRUE;
}

/**
*@brief SPI Initialization
**/
void SPI_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef    SPI_InitStructure;

    /* Configure SPI1 pins: SCK, MISO and MOSI -------------*/
    GPIO_InitStructure.GPIO_Pin =GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

// 片选
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_12;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
//使能端
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
//复位端
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_SetBits(GPIOB, GPIO_Pin_11);
GPIO_SetBits(GPIOB, GPIO_Pin_10);
GPIO_SetBits(GPIOB, GPIO_Pin_12);

/* Set SPI interface */
SPI_InitStructure.SPI_Direction=SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode=SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize=SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL=SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA=SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS=SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler=SPI_BaudRatePrescaler_8;
SPI_InitStructure.SPI_FirstBit=SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial=7;
SPI_Init(SPI2,&SPI_InitStructure);
SPI_Cmd(SPI2,ENABLE); //Enable  SPI2
}