2 /*函数:uchar SPI_Read(uchar reg)
3 /*功能:NRF24L01的SPI读操作
4 /****************************************************************************************************/
5 unsigned char SPI_Read(unsigned char reg)
6 {
7 unsigned char reg_val;
8 CSN=0; // CSN low, initialize SPI communication.。.
9 SPI_RW(reg); // Select register to read from.。
10 reg_val=SPI_RW(0); // 。.then read registervalue
11 CSN=1; // CSN high, terminate SPI communication
12 return(reg_val); // return register value
13 }
14 /****************************************************************************************************/
15 /*功能:NRF24L01读写寄存器函数
16 /****************************************************************************************************/
17 unsigned char SPI_RW_Reg(unsigned char reg, unsigned char value)
18 {
19 unsigned char status;
20 CSN = 0; // CSN low, init SPI transaction
21 status=SPI_RW(reg); // select register
22 SPI_RW(value); // 。.and write value to it.。
23 CSN = 1; // CSN high again
24 return(status); // return nRF24L01 status uchar
25 }
26 /****************************************************************************************************/
27 /*函数:uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars)
28 /*功能: 用于读数据,reg:为寄存器地址,pBuf:为待读出数据地址,uchars:读出数据的个数
29 /****************************************************************************************************/
30 unsigned char SPI_Read_Buf(unsigned char reg, unsigned char *pBuf, unsigned char uchars)
31 {
32 unsigned char status,uchar_ctr;
33 CSN = 0; // Set CSN low, init SPI tranaction
34 status=SPI_RW(reg); // Select register to write to and read status uchar
35
36 for(uchar_ctr=0;uchar_ctr
37 {
38 pBuf[uchar_ctr]=SPI_RW(0);
39 }
40 CSN = 1;
41
42 re
责任编辑;zl
关于控制,MCU就介绍完了,您有什么想法可以联系小编。