移植官方驱动程序时报错
#define dwt_or8bitoffsetreg(addr, offset, or_val) dwt_modify8bitoffsetreg(addr, offset, -1, or_val)
#define dwt_and8bitoffsetreg(addr, offset, and_val) dwt_modify8bitoffsetreg(addr, offset, and_val, 0)
#define dwt_and_or8bitoffsetreg(addr,offset, and_val, or_val) dwt_modify8bitoffsetreg(addr,offset,and_val,or_val)
#define dwt_set_bit_num_8bit_reg(addr,bit_num) dwt_modify8bitoffsetreg(addr,0,-1,DWT_BIT_MASK(bit_num))
#define dwt_clr_bit_num_8bit_reg(addr,bit_num) dwt_modify8bitoffsetreg(addr,0,~DWT_BIT_MASK(bit_num),0)
这里报错好多，都是这个问题，请问是什么原因呀
dw3000\decadriver\deca_device.c(671): warning: #68-D: integer conversion resulted in a change of sign