Watec WAT-910BD, Руководство пользователя

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WAT-910BD H/W MANUAL WAT-910BD H/W MANUAL WAT-910BD H/W MANUAL WAT-910BD H/W MANUAL
while( i < 2 ){ // 2 byte loop
j = 1 ; // bit mask
while(j < 0xFF){ // 8bit send
SendBit = SEND_BUFF[i] & j ? 1 : 0 ; // Bit Test
j = j << 1 ; // j *= 2 ;
p3_4 = 0 ; // SCLK = L
p3_3 = SendBit ; // output LSB first bit data on MOSI
wait_nop() ;
p3_4 = 1 ; // SCLK = H(latch)
}
i ++ ; // next byte
wait_nop() ;
}
// SPI READ start
pd3_3 = 0 ; // set port direction MISO(input)
wait_nop() ;
wait_nop() ;
wait_nop() ;
wait_nop() ;
i = 0 ;
while( i < R_Byte ){ // Loop R_Byte times
j = 0 ; // reset bit counter
READ_BUFF[i] = 0x00 ; // clear buffer
while(j < 8){ // 8bit receive
p3_4 = 0 ; // SCLK = L(Data Change)
wait_nop() ;
wait_nop() ;
p3_4 = 1 ; // SCLK = H(latch）
// LSB first receive from MISO
READ_BUFF[i] += (unsigned char)p3_3 << j ;
j ++ ; // Next Bit
}
i ++ ; // Next Byte
}
p3_5 = 1 ; // SS = H(END)
return TRUE ;
}
//----------------------------------------
// msec wait
//----------------------------------------
void wait_ms(unsigned int wms)
{
unsigned int w_cnt ;
while ( wms--){
w_cnt = CLKMS ;
while(w_cnt--){}
}
}
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