uint8_t cc1101_rcv_packet(uint8_t *rxBuffer, uint8_t *length)
{
#if 0
uint8_t marc=read_cc1101(CCxxx0_MARCSTATE,RT_NULL,0,TYPE_REG)&0x1f;
DEBUG("marc %x\r\n",marc);
if(marc==0x11)
{
write_cc1101(CCxxx0_SIDLE,RT_NULL,0,TYPE_STROBE_STATUS); // Enter IDLE state
write_cc1101(CCxxx0_SFRX,RT_NULL,0,TYPE_STROBE_STATUS); // Flush Tx FIFO
}
else{
marc=read_cc1101(CCxxx0_RXBYTES,RT_NULL,0,TYPE_REG)&0x7f;
DEBUG("rxbytes %x\r\n",marc);
if(marc!=0)
{
DEBUG("read %d bytes\r\n",read_cc1101(CCxxx0_RXBYTES,RT_NULL,0,TYPE_REG)&0x7f);
*length=read_cc1101(CCxxx0_RXFIFO,RT_NULL,0,TYPE_STROBE_STATUS);
read_cc1101(CCxxx0_RXFIFO, rxBuffer, *length,TYPE_BURST);
}
}
return *length;
#endif
uint8_t i,status[2];
write_cc1101(CCxxx0_SRX,RT_NULL,0,TYPE_STROBE_STATUS);
wait_int(RT_TRUE);
wait_int(RT_FALSE);
uint8_t marc=read_cc1101(CCxxx0_RXBYTES,RT_NULL,0,TYPE_REG)&0x7f;
//DEBUG("rxbytes %x\r\n",marc);
if(marc!=0)
{
uint8_t len=read_cc1101(CCxxx0_RXFIFO,RT_NULL,0,TYPE_STROBE_STATUS);
DEBUG("len is %d\r\n",len);
if(len<=*length)
{
read_cc1101(CCxxx0_RXFIFO, rxBuffer, len,TYPE_BURST);
for(i=0;i<len;i++)
DEBUG("%x ",rxBuffer[i]);
DEBUG("cc1101 receive ok\r\n");
*length=len;
read_cc1101(CCxxx0_RXFIFO,status,2,TYPE_BURST);
return status[1]&CRC_OK;
}
else
{
*length=len;
write_cc1101(CCxxx0_SIDLE,RT_NULL,0,TYPE_STROBE_STATUS); // Enter IDLE state
write_cc1101(CCxxx0_SFRX,RT_NULL,0,TYPE_STROBE_STATUS);
}
}
return 0;
}
void cc1101_send_packet(uint8_t *txBuffer, uint8_t size)
{
int i;
DEBUG("cc1101 write \r\n");
for(i=0;i<size;i++)
DEBUG("%x ",txBuffer[i]);
write_cc1101(CCxxx0_TXFIFO, &size,1,TYPE_REG);
write_cc1101(CCxxx0_TXFIFO, txBuffer, size,TYPE_BURST); //写入要发送的数据
write_cc1101(CCxxx0_STX,RT_NULL,0,TYPE_STROBE_STATUS); //进入发送模式发送数据
// Wait for GDO0 to be set -> sync transmitted
wait_int(RT_TRUE);
// Wait for GDO0 to be cleared -> end of packet
wait_int(RT_FALSE);
write_cc1101(CCxxx0_SFTX,RT_NULL,0,TYPE_STROBE_STATUS);
}
int main(int argc, char **argv) {
int fd, res;
assert(argc>1);
fd = open(argv[1], O_RDWR);
assert(fd >= 0);
assert(ioctl(fd, I2C_SLAVE, SLAVE_ADDR) >= 0);
as3935_init(fd);
dump_regs(fd, NULL);
if(argc>2) {
uint8_t *wrbuf=alloca(argc-2);
int i;
printf("write: ");
for(i=2;i<argc;i++) {
wrbuf[i-2]=strtoul(argv[i],NULL,0)&0xff;
printf("0x%02x ",wrbuf[i-2]);
}
printf("\n");
res = write(fd, wrbuf, argc-2);
assert(res == (argc-2));
dump_regs(fd, NULL);
}
else {
while(1) {
uint8_t ints;
time_t now;
wait_int(fd);
usleep(2000);
as3935_rreg(fd, 3, &ints);
now = time(NULL);
printf("%sints: %x / ",ctime(&now),ints&15);
ints&=13;
if(ints) {
as3935_t regs;
#ifdef MASK_DISTURBER
//if((ints&13) == 4) continue;
#endif
if(ints&1) printf("noise level too high:\n");
if(ints&4) printf("disturber detected:\n");
if(ints&8) printf("lightning:\n");
dump_regs(fd, ®s);
} // ints
} // while(1)
}
close(fd);
return 0;
}
void cc1101_send_packet(uint8_t *txBuffer, uint8_t size)
{
int i;
DEBUG("cc1101 write \r\n");
for(i=0;i<size;i++)
DEBUG("%x ",txBuffer[i]);
write_cc1101(CCxxx0_TXFIFO, &size,1,TYPE_REG);
write_cc1101(CCxxx0_TXFIFO, txBuffer, size,TYPE_BURST);
write_cc1101(CCxxx0_STX,RT_NULL,0,TYPE_STROBE_STATUS);
wait_int(RT_TRUE);
wait_int(RT_FALSE);
//rt_thread_delay(1);
write_cc1101(CCxxx0_SRX,RT_NULL,0,TYPE_STROBE_STATUS);
if((read_cc1101(CCxxx0_TXBYTES,RT_NULL,0,TYPE_REG)&0x7f)==0)
{
rt_kprintf("cc1101 send ok\r\n");
return ;
}
rt_kprintf("cc1101 send failed 2\r\n");
}
uint8_t cc1101_rcv_packet(uint8_t *rxBuffer, uint8_t *length)
{
uint8_t status[2];
uint8_t packetLength;
uint8_t i=(*length)*4; // 具体多少要根据datarate和length来决定
write_cc1101(CCxxx0_SRX,RT_NULL,0,TYPE_STROBE_STATUS); //进入接收状态
wait_int(RT_FALSE);
if ((read_cc1101(CCxxx0_RXBYTES,RT_NULL,0,TYPE_STROBE_STATUS) & BYTES_IN_RXFIFO)) //如果接的字节数不为0
{
packetLength = read_cc1101(CCxxx0_RXFIFO,RT_NULL,0,TYPE_STROBE_STATUS);//读出第一个字节，此字节为该帧数据长度
if (packetLength <= *length) //如果所要的有效数据长度小于等于接收到的数据包的长度
{
read_cc1101(CCxxx0_RXFIFO, rxBuffer, packetLength,TYPE_BURST); //读出所有接收到的数据
*length = packetLength; //把接收数据长度的修改为当前数据的长度
// Read the 2 appended status bytes (status[0] = RSSI, status[1] = LQI)
read_cc1101(CCxxx0_RXFIFO, status, 2,TYPE_BURST); //读出CRC校验位
write_cc1101(CCxxx0_SFRX,RT_NULL,0,TYPE_STROBE_STATUS); //清洗接收缓冲区
DEBUG("cc1101 read \r\n");
for(i=0;i<*length;i++)
DEBUG("%x ",rxBuffer[i]);
write_cc1101(CCxxx0_STX,RT_NULL,0,TYPE_STROBE_STATUS);
return (status[1] & CRC_OK); //如果校验成功返回接收成功
}
else
{
*length = packetLength;
write_cc1101(CCxxx0_SFRX,RT_NULL,0,TYPE_STROBE_STATUS); //清洗接收缓冲区
DEBUG("rx buffer is not enough ,need %d bytes\r\n",packetLength);
write_cc1101(CCxxx0_STX,RT_NULL,0,TYPE_STROBE_STATUS);
return 0;
}
}
else
{
write_cc1101(CCxxx0_STX,RT_NULL,0,TYPE_STROBE_STATUS);
return 0;
}
}
