SPI1->CR1&=0XFFC7;//Fsck=Fcpu/256 if(SpeedSet==SPI_SPEED_2)//¶þ·ÖƵ { SPI1->CR1|=0<<3;//Fsck=Fpclk/2=36Mhz }else if(SpeedSet==SPI_SPEED_8)//°Ë·ÖƵ { SPI1->CR1|=2<<3;//Fsck=Fpclk/8=9Mhz }else if(SpeedSet==SPI_SPEED_16)//Ê®...
assert_param(IS_SPI_BAUDRATE_PRESCALER(SPI_BaudRatePrescaler));//判断有效性 SPI1->CR1&=0XFFC7;//位3-5清零,用来设置波特率 SPI1->CR1|=SPI_BaudRatePrescaler; //设置SPI1速度 SPI_Cmd(SPI1,ENABLE); //使能SPI1 } //SPI1 读写一个字节 //TxData:要写入的字节 //返回值:读取到的字节 这里...
a&=b; 等同于 a=a&b;即SPI1->CR1寄存器的值与0XFFC7做位与运算，结果存入SPI1->CR1寄存器。
SPI 控制寄存器 1(SPICR1): SPIE=1:使能 SPI 中断 ;SPIE=0:关闭 SPI 中断 ; SPE=1:SPI 模块使能;SPE=0:停止 SPI 模块,SPI 端口为普通 IO 口 MSTR=1:SPI 工作在主机模式;MSTR=0:SPI 工作在从机模式 CPOL=1:时钟在空闲时候为高电平;CPOL=0:时钟在空闲时候为低电平. CPHA=1:在偶数个时钟边沿开始...
将SPI1->CR1的中间3位设置为1.至于什么意思去查下SPI1->CR1的每个位的功能.
开发板的资料是spi2 想改到spi1 上都需要改那些配置??? void SPI2_SetSpeed(u8 SPI_BaudRatePrescaler) { assert_param(IS_SPI_BAUDRATE_PRESCALER(SPI_BaudRatePrescaler)); SPI1->CR1&=0XFFC7; SPI1->CR1|=SPI_BaudRatePrescaler; SPI_Cmd(SPI1,ENABLE); ...
from hematopoietic stem cells (HSCs) and multipotent progenitors (MPPs) and their further differentiation into CLPs and GMPs. (C) Illustration of the involvement of GFI1 and GFI1B in differentiation steps after the CLP stage, in particular during the pre-BCR dependent step. Here, GFI1B has ...
SPI1->CR1 |= 0<<11 ; //数据格式:8bit SPI1->CR1 |= 1<<1 ; //CPOL=1:空闲模式下SCK为高电平 SPI1->CR1 |= 1<<0 ; //CPHA=1:数据采样从第二个时钟沿开始 SPI1->CR1 |= 2<<3 ; //Fsck=Fcpu/8 SPI1->CR1 |= 0<<7 ; //MSBfirst if(spi1_mode==spi1_mode_master...
拆除原车柏林之声系统后的空缺，选择用PHASS妃仕MB-4BP奔驰专用套装来改善听感。用妃仕的单元和原车单元对比，诸多细节就能看出产品发声效果的差别，妃仕的产品有更厚重的磁铁钕磁强磁来作为动力单元。4寸单元采用强化PP振膜掺入长纤维，定制铝盆架也有充足的刚性，根据原车喇叭位专模开发，整个喇叭还原大动态响应，...
Genetic ablation and morpholino (MO) knockdown studies have shown that Pu.1 is the functional ortholog of mammalian PU.1,21,25 whereas Spi1-like has been shown to play a role in embryonic myelopoiesis.26 Intriguingly, our recent study showed that while RBI-born (embryonic) macrophages are ...