//SPI写寄存器
//reg:指定寄存器地址
//value:写入的值
uint8_t NRF24L01_Write_Reg(uint8_t reg,uint8_t value)
{
uint8_t status;
NRF24L01_CS=0; //使能SPI传输
status =spi_read_write_byte(reg);//发送寄存器号
spi_read_write_byte(value); //写入寄存器的值
NRF24L01_CS=1; //禁止SPI传输
return(status); //返回状态值
}
//读取SPI寄存器值
//reg:要读的寄存器
uint8_t NRF24L01_Read_Reg(uint8_t reg)
{
uint8_t reg_val;
NRF24L01_CS = 0; //使能SPI传输
spi_read_write_byte(reg); //发送寄存器号
reg_val=spi_read_write_byte(0XFF);//读取寄存器内容
NRF24L01_CS = 1; //禁止SPI传输
return(reg_val); //返回状态值
}
//在指定位置读出指定长度的数据
//reg:寄存器(位置)
//*pBuf:数据指针
//len:数据长度
//返回值,此次读到的状态寄存器值
uint8_t NRF24L01_Read_Buf(uint8_t reg,uint8_t *pBuf,uint8_t len)
{
uint8_t status,i;
NRF24L01_CS = 0; //使能SPI传输
status=spi_read_write_byte(reg);//发送寄存器值(位置),并读取状态值
for(i=0;i<len;i++){
pBuf[i]=spi_read_write_byte(0XFF);//读出数据
}
NRF24L01_CS=1; //关闭SPI传输
return status; //返回读到的状态值
}
u16 readAdc(u8 cmd)
{
u8 high, low;
u16 res = 0;
spi_read_write_byte(cmd);
high = spi_read_write_byte(0x00);
low = spi_read_write_byte(0x00);
res = high<<8;
res = (res | low)>>3;
if(cmd == CMD_RDY && res == 4095){
res = 0;
}
return res;
}