STM32F4只能申请3个结构体

ichmarcel · 发表于 2020-11-19 10:45:45

最近在用STM32F4做PID，发现只能申请3个结构体（原本需要申请6个），只有前三个能返回结构体地址，后三个返回的地址都是0。

有没有哪位大神知道这是什么原因呢？

PID_LocType* yaw_pid_init()
{
PID_LocType* PID =(PID_LocType*) malloc(sizeof(PID_LocType));
PID->kp = 4;
PID->ki = 0.005;//0.005;
PID->kd = 0.02;//0.015;

PID->ek = 0;
PID->ek1 = 0;
PID->sum = 0;

return PID;
}

PID_LocType* xy_pid_init()
{
PID_LocType* PID =(PID_LocType*) malloc(sizeof(PID_LocType));
PID->kp = 60;
PID->ki = 0.003;
PID->kd = 0.2;

PID->ek = 0;
PID->ek1 = 0;
PID->sum = 0;

return PID;
}

yaw_left_pid = yaw_pid_init();
yaw_right_pid = yaw_pid_init();
x_left_pid = xy_pid_init();
x_right_pid = xy_pid_init();
y_forward_pid = xy_pid_init();
y_back_pid = xy_pid_init();

这6个PID结构体只有前三个能返回正常的地址，后面三个返回的都是0.