#include "stm32f10x.h"
#include "stdio.h"
#include "string.h"
#define PRINTF_ON 1
void RCC_Configuration(void);
void GPIO_Configuration(void);
void USART_Configuration(void);
void SPI_Configuration(void);
#define BufferSize 32
#define delay() for(i=0;i<200;i++)
SPI_InitTypeDef SPI_InitStructure;
u8 SPI1_Buffer_Tx[BufferSize] =
{
0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,
0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,0x10,
0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,
0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20
};
u8 SPI2_Buffer_Tx[BufferSize] =
{
0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,
0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,0x60,
0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,
0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x70
};
u8 SPI1_Buffer_Rx[BufferSize+1] = {0};
u8 SPI2_Buffer_Rx[BufferSize] = {0};
u8 Tx_Counter = 0;
u8 Rx_Counter = 0;
u8 k=0,i=0;
int main(void)
{
RCC_Configuration();
GPIO_Configuration();
USART_Configuration();
SPI_Configuration();
while(Tx_Counter < BufferSize)
{
SPI_I2S_SendData(SPI2,SPI2_Buffer_Tx[Tx_Counter]); //必须从机先发送数据
//while(SPI_I2S_GetFlagStatus(SPI2,SPI_I2S_FLAG_TXE)==RESET); //如果spi2 还有发送缓存则等待发送完成
SPI_I2S_SendData(SPI1,SPI1_Buffer_Tx[Tx_Counter]);
while(SPI_I2S_GetFlagStatus(SPI2,SPI_I2S_FLAG_RXNE) == RESET); //没有接收缓存则等待
SPI2_Buffer_Rx[Rx_Counter] = SPI_I2S_ReceiveData(SPI2);
while(SPI_I2S_GetFlagStatus(SPI1,SPI_I2S_FLAG_RXNE) ==RESET);
SPI1_Buffer_Rx[Rx_Counter] = SPI_I2S_ReceiveData(SPI1);
Tx_Counter++;
Rx_Counter++;
}
printf("\r\n The SPI1 has sended data below : \r\n");
while(k<BufferSize)
{
printf(" %0.2d \r ",SPI1_Buffer_Tx[k]);
k++;
}
printf("\r\n The SPI2 has received data below : \r\n");
k=0;
while(k<BufferSize)
{
printf(" %0.2d \r ",SPI2_Buffer_Rx[k]);
k++;
}
k=0;
printf("\r\n The SPI2 has sended data below : \r\n");
while(k<BufferSize)
{
printf(" %0.2d \r ",SPI2_Buffer_Tx[k]);
k++;
}
printf("\r\n The SPI1 has received data below : \r\n");
k=0;
while(k<BufferSize)
{
printf(" %0.2d \r ",SPI1_Buffer_Rx[k]);
k++;
}
while(1);
}
void SPI_Configuration(void)
{
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_LSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_Init(SPI1,&SPI_InitStructure);
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
SPI_Init(SPI2,&SPI_InitStructure);
SPI_Cmd(SPI1,ENABLE);
SPI_Cmd(SPI2,ENABLE);
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA , &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB , &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA , &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA , &GPIO_InitStructure);
}
void RCC_Configuration(void)
{
/* 定义枚举类型变量 HSEStartUpStatus */
ErrorStatus HSEStartUpStatus;
/* 复位系统时钟设置*/
RCC_DeInit();
/* 开启HSE*/
RCC_HSEConfig(RCC_HSE_ON);
/* 等待HSE起振并稳定*/
HSEStartUpStatus = RCC_WaitForHSEStartUp();
/* 判断HSE起是否振成功，是则进入if()内部 */
if(HSEStartUpStatus == SUCCESS)
{
/* 选择HCLK（AHB）时钟源为SYSCLK 1分频 */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* 选择PCLK2时钟源为 HCLK（AHB） 1分频 */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* 选择PCLK1时钟源为 HCLK（AHB） 2分频 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* 设置FLASH延时周期数为2 */
FLASH_SetLatency(FLASH_Latency_2);
/* 使能FLASH预取缓存 */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* 选择锁相环（PLL）时钟源为HSE 1分频，倍频数为9，则PLL输出频率为 8MHz * 9 = 72MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
/* 使能PLL */
RCC_PLLCmd(ENABLE);
/* 等待PLL输出稳定 */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
/* 选择SYSCLK时钟源为PLL */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* 等待PLL成为SYSCLK时钟源 */
while(RCC_GetSYSCLKSource() != 0x08);
}
/* 打开APB2总线上的GPIOA时钟*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|RCC_APB2Periph_USART1|RCC_APB2Periph_SPI1, ENABLE);
//RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2,ENABLE);
//RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR|RCC_APB1Periph_BKP|RCC_APB1Periph_WWDG, ENABLE);
}
void USART_Configuration(void)
{
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
USART_ClockInit(USART1 , &USART_ClockInitStructure);
USART_InitStructure.USART_BaudRate = 9600;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx|USART_Mode_Tx;
USART_Init(USART1,&USART_InitStructure);
USART_Cmd(USART1,ENABLE);
}
#if PRINTF_ON
int fputc(int ch,FILE *f)
{
USART_SendData(USART1,(u8) ch);
while(USART_GetFlagStatus(USART1,USART_FLAG_TC) == RESET);
return ch;
}
#endif
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