Wiznet W7200-EVB, Руководство пользователя

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© Copyright 2011 WIZnet Co., Inc. All rights reserved. Ver. 1.1
13
W7200-EVB User
’s
Guide
SpiSendData(0); //dummy data
data_buf[idx] = SpiRecvData(idx); //READ data
CSon(); // CS=1, SPI end
ISR_ENABLE(); // Interrupt Service Routine disable
}
Code 2 Pseudo code for write with SPI interface
#define data_write_command 0x80
uint16 addr; //address : 16bits
int16 data_len; //data_length :15bits
uint8 data_buf[]; // array for data
SpiSendData(); //send data from MCU to W5200
SpiRecvData(); //Receive data from W5200 to MCU
/* Pseudo Code for Read data of 8bit per packet */
{
SpiSendData(); //send data from MCU to W5200
ISR_DISABLE(); // Interrupt Service Routine disable
CSoff(); // CS=0, SPI start
SpiSendData(((addr+idx) & 0xFF00) >> 8); //Address byte 1
SpiSendData((addr+idx) & 0x00FF); //Address byte 2
// data write c data length upper 7bits
SpiSendData((data_write_command | ((data_len & 0x7F00) >> 8)));
// data length bottom 8bits
SpiSendData((data_len & 0x00FF));
SpiSendData(data_buf[idx]);
CSon(); // CS=1, SPI end
IINCHIP_ISR_ENABLE(); // Interrupt Service Routine disable
}