/****************************************************
SpiTsRead
****************************************************/
int SpiTsRead(struct DibBridgeContext *pContext,unsigned int addr,unsigned char* buf, unsigned int size)
{
unsigned char command[6];
unsigned int commandsize;
/****** Build Command ******
- b31: 0 => Start Bit
- b30: 0 => Read
- b29-28: => Transfer Size
- b27: => Auto Increment
- b26-b0: => Formatted Address
- b15-b0: => Transfer Size
***************************/
command[0] = (addr & 0x3F000000) >> 24;
command[1] = (addr & 0x00FF0000) >> 16;
command[2] = (addr & 0x0000FF00) >> 8;
command[3] = (addr & 0x000000FF) >> 0;
commandsize = size;
command[4] = (commandsize & 0xFF00) >> 8;
command[5] = (commandsize & 0x00FF);
/** Write Command **/
SpiWrite(pContext,command,6);
SpiRead(pContext,buf,size);
return 0;
}
//=====================================================
// nRF905 的检测程序,首先写入地址,然后再读出地址,
// 如果读出来的值与原来的一样,那么就返回1 ,否则返回0
//=====================================================
u8 nRF905_Check(void)
{
u8 i,AddressTemp[4]={0};
CSN = 0;//SPI valid
SpiWrite(WTA);//写地址
for(i=0;i<4;i++)
{
SpiWrite(TxRxAddress[i]);
}
CSN = 1;
delay_us(500);
CSN = 0;
SpiWrite(RTA);//读地址
for(i=0;i<4;i++)
{
AddressTemp[i]=SpiRead();
}
CSN = 1;
for(i=0;i<4;i++)
{
if(AddressTemp[i] != TxRxAddress[i])
{
break;
}
}
if(i!=4) return 0;
return 1;
}
DRESULT disk_read (
BYTE drv, /* Physical drive nmuber (0) */
BYTE *buff, /* Pointer to the data buffer to store read data */
DWORD sector, /* Start sector number (LBA) */
BYTE count /* Sector count (1..255) */
)
{
DRESULT res;
uint32_t size;
if (drv) {
res = (DRESULT)STA_NOINIT;
return res;
}
if(count==0||count>=2)
{
res = (DRESULT)STA_NOINIT;
return res;
}
size = count*512;
if(bUseSDCard)
SpiRead(sector, size, buff);
else
spiFlashReadData(sector*512, size, buff);
res = RES_OK; /* Clear STA_NOINIT */;
return res;
}
unsigned char enc28j60ReadOp(unsigned char op, unsigned char address)
{
unsigned char dat = 0;
ENC28J60_CSL();
SpiWrite(op | (address & ADDR_MASK));
dat =SpiRead();
// do dummy read if needed (for mac and mii, see datasheet page 29)
if(address & 0x80)
{
dat =SpiRead();
}
// release CS
ENC28J60_CSH();
return dat;
}
__attribute__((always_inline)) static inline void SpiReceive(struct spi_periph *p, struct spi_transaction *t)
{
while (bit_is_set(((sspRegs_t *)(p->reg_addr))->sr, RNE)) {
if (p->rx_idx_buf < t->input_length) {
uint16_t r;
SpiRead(p, &r);
if (t->dss == SPIDss8bit) {
t->input_buf[p->rx_idx_buf] = (uint8_t)r;
} else if (t->dss == SPIDss16bit) {
t->input_buf[2 * p->rx_idx_buf] = (uint8_t)r;
t->input_buf[2 * p->rx_idx_buf + 1] = (uint8_t)(r >> 8);
}
p->rx_idx_buf++;
} else {
//=====================================================
//使用905接收数据
//
//=====================================================
void RxPacket(void)
{
unsigned char i;
TRX_CE = 0; //设置905进入待机模式
CSN = 0;
SpiWrite(RRP); //准备读取接收到的数据
for(i=0;i<32;i++)
{
RxBuf[i] = SpiRead(); //通过SPI口从905读取数据
}
CSN = 1;
while(DR||AM);
TRX_CE = 1;
}
void enc28j60ReadBuffer(unsigned int len, unsigned char* data)
{
ENC28J60_CSL();
// issue read command
SpiWrite(ENC28J60_READ_BUF_MEM);
while(len)
{
len--;
// read data
*data = SpiRead();
data++;
}
*data='\0';
ENC28J60_CSH();
}
void RxPacket(void)
{
uchar i;
TRX_CE=0; // Set nRF905 in standby mode
CSN=0; // Spi enable for write a spi command
SpiWrite(RRP); // Read payload command
for (i=0;i<32;i++)
{
RxBuf[i]=SpiRead(); // Read data and save to buffer
}
CSN=1; // Disable spi
while(DR||AM) //等待... /////////////如果接收不到程序将停滞 数据准备就绪以及地址匹配
; //即如果没有匹配的905模块时，这一句需要注释掉
TRX_CE=1; //允许发生或接收 ？？？？？？？？？？？？？？？？？？？？？？？？？？
if(RxBuf[0] == 1)
{
LED1 = 0 ;
}
/* if(RxBuf[1] == 1)
{
LED2 = 0 ;
}
if(RxBuf[2] == 1)
{
LED3 = 0 ;
}
if(RxBuf[3] == 1)
{
LED4 = 0 ;
}*/
Delay(500); // ...light led
LED1 = 1 ;
LED2 = 1 ;
LED3 = 1 ;
LED4 = 1 ;
}
