Data Sheet

© Copyright 2013 WIZnet Co.,Ltd. All rights reserved.
76
iEthernet
W5200
CSoff(); // CS=0, SPI start
// SpiSendData
SpiSendData(((addr+idx) & 0xFF00) >> 8); // Address byte 1
SpiSendData((addr+idx) & 0x00FF); // Address byte 2
// Data write command + Data length upper 7bits
SpiSendData((data_read_command| ((data_len& 0x7F00) >> 8)));
// Data length bottom 8bits
SpiSendData((data_len& 0x00FF));
// Read data:On data_len> 1, Burst Read Processing Mode.
for(int idx = 0; idx<data_len; idx++)
{
SpiSendData(0); // Dummy data
data_buf[idx] = SpiRecvData(idx); // Read data
}
CSon(); // CS=1, SPI end
ISR_ENABLE(); // Interrupt Service Routine disable
}