想换成SPI1来控制24L01应该做哪些修改？

珊瑚海 · 发表于 2015-9-26 20:17:26

我直接把例程spi2的地方全换成了spi1，但是在NRF24L01_Check()不能通过，想请问一下，还应该修改哪些地方。谢谢！

珊瑚海 · 发表于 2015-9-26 20:17:27

搞定了！！！太粗心

珊瑚海 · 发表于 2015-9-26 22:14:54

网上搜了一些资料，发现APB1（36）和APB2（72）的时钟不同，把spi1的波特率设置为了8，这样给spi的时钟应该就是9M。。。。可是还是一如既往地NRF24L01_Check()不能通过。HELP！！！

珊瑚海 · 发表于 2015-9-26 22:30:57

void SPI1_Init(void) 
{ 
  GPIO_InitTypeDef GPIO_InitStructure; 
  SPI_InitTypeDef  SPI_InitStructure; 
 
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA, ENABLE ); 
RCC_APB1PeriphClockCmd( RCC_APB2Periph_SPI1,  ENABLE ); 
  
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7; 
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;   
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 
GPIO_Init(GPIOA, &GPIO_InitStructure); 
 
  GPIO_SetBits(GPIOA,GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);   
 
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_High; 
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; 
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; 
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32; 
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;  
SPI_InitStructure.SPI_CRCPolynomial = 7;  
SPI_Init(SPI1, &SPI_InitStructure);  
  
SPI_Cmd(SPI1, ENABLE);  
 
//SPI2_ReadWriteByte(0xff); 
  
 
}    
 
 
 
void SPI1_SetSpeed(u8 SPI_BaudRatePrescaler) 
{ 
  assert_param(IS_SPI_BAUDRATE_PRESCALER(SPI_BaudRatePrescaler)); 
SPI1->CR1&=0XFFC7; 
SPI1->CR1|=SPI_BaudRatePrescaler; 
SPI_Cmd(SPI1,ENABLE);  
//SPI2_ReadWriteByte(0xff);  
}  
 
u8 SPI1_ReadWriteByte(u8 TxData) 
{ 
u8 retry=0; 
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET) 
{ 
retry++; 
if(retry>20)return 0; 
}   
SPI_I2S_SendData(SPI1, TxData);  
retry=0; 
 
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET) 
{ 
retry++; 
if(retry>20)return 0; 
}       
return SPI_I2S_ReceiveData(SPI1);      
 
u8 NRF24L01_Check(void) 
{ 
u8 buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5}; 
u8 i; 
SPI1_SetSpeed(SPI_BaudRatePrescaler_8); 
NRF24L01_Write_Buf(WRITE_REG_NRF+TX_ADDR,buf,5); 
NRF24L01_Read_Buf(TX_ADDR,buf,5); 
for(i=0;i<5;i++)if(buf!=0XA5)break;    
if(i!=5)return 1; 
return 0;  
}

zhoujiaquan · 发表于 2015-10-11 13:07:28

回复【4楼】珊瑚海:
 ---------------------------------
 你好，我也是用spi发送数据，我是新做的板子，测试板子的nrf24l01发射模块与发射模块的通信，我的程序很简单，
 GPIO_InitTypeDef GPIO_InitStructure;
 
 //  NVIC_InitTypeDef NVIC_InitStructure;
 RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA|RCC_APB2Periph_SPI1, ENABLE );
  
 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_7;
 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //???????ì????
 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 GPIO_Init(GPIOA, &GPIO_InitStructure);
 
   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
 //  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 GPIO_Init(GPIOA, &GPIO_InitStructure);
  
 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  
 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 GPIO_Init(GPIOA, &GPIO_InitStructure);
 
 // GPIO_InitStructure.GPIO_Pin=GPIO_Pin_1; //PB1 CE
 // GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP; //???ì????
 // GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
 // GPIO_Init(GPIOB,&GPIO_InitStructure);
 //   NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
 //   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1 ;//??????????3
 // NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; //×???????3
 // NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ?¨??????
 // NVIC_Init(&NVIC_InitStructure);
 
 
 
 //  GPIO_SetBits(GPIOA,GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
 
 SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;  //?è??SPI???ò?ò?????ò??????????:SPI?è???????????ò?????¤
 SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //?è??SPI?¤×÷????:?è?????÷SPI
 SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; //?è??SPI???????ó??:SPI·???????8?????á??
 SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; //???????????±????????:?±???ü????
 SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; //?????????????????±????
 SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; //NSS???????????¨NSS???????????í???¨????SSI???????í:????NSS??????SSI??????
 SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16; //?¨???¨?????¤·???????:?¨?????¤·???????256
 SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; //???¨??????????MSB??????LSB??????:??????????MSB??????
 SPI_InitStructure.SPI_CRCPolynomial = 7; //CRC?????????à????
 SPI_Init(SPI1, &SPI_InitStructure);  //?ù??SPI_InitStruct?????¨???????????????èSPIx?????÷
  
 SPI_Cmd(SPI1, ENABLE); //????SPI???è
 
 u8 SpiRW(u8 Data) 
 { 
 while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);  //?±SPI·????????÷·????±????
 SPI_I2S_SendData(SPI1, Data); //?¨?? SPI2·?????×??????? 
 while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET); //?±SPI?????????÷?????±????
 return SPI_I2S_ReceiveData(SPI1); //·???SPI??????????????
 }外加时钟程序，这是工程里的内容，想了好多天，发送任意一个数，接收都是零，不知道哪里出了问题，请高手指教!还想请你发一份你的这个程序给我，不胜感激！！(990170517@qq.com)

蔚蓝馨 · 发表于 2015-11-3 10:36:21

回复【5楼】zhoujiaquan:
 ---------------------------你的问题解决了吗，为什么返回都是零呢，我也是这样

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想换成SPI1来控制24L01应该做哪些修改？

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