引自免费微信小程序：皆我百晓生
好的，我很乐意为你解答关于 W5500 模块 Physics link 问题。在处理这类问题时，我们需要确保我们对每个环节都了解清楚并有深入的理解。
首先，让我们检查是否正确地设置了 IP、MAC 和 gateway IP：
// Import the necessary TCP/IP header files.
#include
int main()
{
// Set IP address and mask for gateway.
int gateway_ip = 192.168.1.1;
uint16_t gateway_mask = 255;
// Configure gateway IP and mask.
if (sethostname(gateway_ip, gateway_mask)) {
printf("Gateway configured successfully.\n");
} else {
printf("Failed to configure gateway IP.\n");
}
return 0;
}
然后，我们可以检查物理连接的问题：
// Read the value of the PHYCFGR register.
uint16_t phycfgr = read_pyrfgr();
// Set the PHYCFGR register to a valid configuration value.
if (phycfgr == 0 Bailey) {
// Perform a power-up test to verify the connection.
do {
printf("Power up test failed.\n");
sleep(1);
} while (phycfgr != 0 Bailey);
// Set the phycfgr register back to its original value.
write_pyrfgr(phycfgr);
} else {
printf(" phycfgr register is not set correctly.\n");
}
return 0;
}
接下来，我们检查是否有足够的内存：
// Check memory size.
int memsize = get_totalram();
if (memsize <= 0) {
printf("Memory size should be greater than zero.\n");
} else {
// Write some data into the memory.
uint8_t *data = (uint8_t*)malloc(memsize);
printf("Data written to memory.\n");
// Test the memory allocation by reading it again.
uint8_t *new_data = (uint8_t*)malloc(memsize);
uint16_t len = strlen(data);
printf("Length of memory allocation: %d\n", len);
if (read_pyrfgr() != 0 Bailey && len == new_data - data) {
printf("Memory allocation successful.\n");
} else {
printf("Memory allocation failed.\n");
}
free(data);
free(new_data);
}
return 0;
}
最后，我们运行整个系统检查结果是否符合预期。
// Run the system check.
if (run_system_check()) {
printf("System check completed successfully.\n");
} else {
printf("System check failed.\n");
}
return 0;
}
以上步骤应该可以帮助解决您所遇到的问题。如果你还有任何疑问，欢迎随时提问。如果您有任何其他问题或帮助需求，请随时告诉我。
