SPI 状态寄存器 SPISR: SPIF=1,:恭喜你,接收到新数据啦! SPITEF=1:告诉你,可以发送新数据啦! 实际应用: 1. SPI 初始化 SPI0BR = 0x42; /*设置 SPI 波特率:fBUS =40M, 1M SPI*/ SPI0CR1=0x50; /*0x50=0101 0000,启动 SPI 模块;设置为主模式,发送时高位在前*/ 2. SPI 发送接收函数 unsigned...
while (!(SPI1->SR & 0x01));return (SPI1->DR);} void SPI_Configuration(void){ SPI_Cmd(...
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(SPI1->SR & 0x01 yijie692 2018-10-01 19:32:40 用spi操作nrf2410时手册推荐程序不一致是为什么? =SPI2_ReadWriteByte(0XFF);//notice !NRF24L01_CSN = 1;return(reg_val);} 战舰的实现是SPI2_ReadWriteByte(0XFF);但说明手册的推荐程序是SPI2_ReadWriteByte(0); 请教原子哥这是怎么回事呢?
SPI2_ReadWriteByte(0xff); } 寄存器操作。。。 void SPI1_Init(void) 4 { 5 RCC->APB2ENR|=1<<2; //PORTA时钟使能 6 RCC->APB2ENR|=1<<12; //SPI1时钟使能 7 8 //这里只针对SPI口初始化 9 GPIOA->CRL&=0X000FFFFF; 10 GPIOA->CRL|=0XBBB00000;//PA5.6.7复用 ...
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.
If SPI _SR TFFF is not setten up there is no DMA hardware request. I have tried to solve that problem by another channel linking(2DMA channel to send data to 1 SPI) but SPI_SR has fields that protected from writing so I got a bus error. If you know how to solve that i will ...
13 MR10Q010 Revision 5.6, 6/2018 MR10Q010 STATUS REGISTER The status register consists of the 8 bits shown in Table 3 below. The Status Register Write Disable bit (SRWD, Bit 7) is used in conjunction with the Write Enable Latch (WEL, bit 1) and the Write Protection pin (WP) ...
(W) is low during the WRSR command (instruction, address and data) DS1639 - Rev 14 page 17/46 M950x0-W M950x0-R M950x0-DF Read from memory array (READ) 6.5 Read from memory array (READ) As shown in Figure 11, to send this instruction to the device, chip select (S) is ...
while (!(SPI2_SR & SPI_SR_TXE)); /* Wait until not busy */ while (SPI2_SR & SPI_SR_BSY); // infinite loop here: SPI2_SR = 0x06c3 /* clear the flags */ DMA1_IFCR = DMA_IFCR_CGIF4 | DMA_IFCR_CGIF5; /* disable SPI */ ...