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我想创建不同的消息在两台主机之间传输。我遵循的程序结构是创建一个主结构,其中声明了在不同消息中传递的所有变量。 然后我使用master结构中的相同变量为不同的消息创建了不同的结构体,我试图传递的值是通过指针。 下面是我想要做的事情的大致轮廓。我不知道这是正确的方法,还是有另一种更好的方法来做到这一点。从主结构获取变量结构
在编译时,我得到的错误是: 1.表达式必须有一个恒定的值 2.不完全类型是不允许
两者都指出,当我尝试创建消息结构和传球的实例主结构的指针。
请帮忙。
[代码]
struct Master{
char Bulk_Charging_Complete : 1;
char Charging_Complete : 1;
short Vehicle_Energy_Capacity;
char Vehicle_RESS_SOC;
short Vehicle_Maximum_Power_Limit : 13;
short Vehicle_Maximum_Current_Limit: 13;
short Vehicle_Maximum_Voltage_Limit: 13;
short Charger_Maximum_Power_Limit: 13;
short Charger_Maximum_Current_Limit: 13;
short Charger_Maximum_Voltage_Limit: 14;
short Charge_Current_Request: 13;
} Power;
/* create a pointer of type Master struct and point to instance of that struct type,i.e Power */
struct Master *power_pointer = &Power;
// creating a structure of a message, the value to its variables will be fetched by pointer to the master structure
struct {
short var1 : 1;
char var2 : 4;
short var3 : 1;
short var4 : 4;
}EV_msg_01;
// creating a structure of a message, the value to its variables will be fetched by pointer to the master structure
struct {
short var1 : 1;
short var2 : 4;
short var3 : 1;
short var4 : 4;
}station_msg_01;
struct EV_msg EV_msg_01 = {
power_pointer->Vehicle_Energy_Capacity,power_pointer->Vehicle_RESS_SOC,power_pointer->Vehicle_Maximum_Power_Limit,power_pointer->Vehicle_Maximum_Current_Limit
};
struct station_msg_01 station_msg_01 = {
power_pointer->Charger_Maximum_Power_Limit, power_pointer->Charger_Maximum_Current_Limit,power_pointer->Charger_Maximum_Voltage_Limit,power_pointer->Charge_Current_Request
};
[/代码]
这应该是什么语言? –
对我来说看起来像C –