CCS5.5中调用IQmath函数问题

user1494644

你好，我在CCS5中移植了CCS3.3的一个工程，里面用到_IQ14mpy(A,B)和_IQ14isqrt(A)两个函数，开始编译只是提示不兼容警告，功能都能实现，最近不知道是不是丢了什么东西，警告

warning #16002-D: build attribute vendor section TI missing in
"../lib/IQmath.lib<IQ14isqrt.obj>": compatibility cannot be determined还在，但是_IQ14isqrt(A)函数功能实现不了了，右键点击函数发现ERROR:cannot load from non-primitive location ，不知何解？望赐教。

7 年多前

0 Susan Yang 7 年多前

TI__Guru**** 252096 points

请参照下面的解释：

This message means that the expression tried to read and display data from the target where the type of the data is not a primitive type (char, short, int etc). For instance, "main" is of type "function pointer" so evaluating "*main" would be asking the debugger to display data of type "function" which doesn't make much sense and would return this error.

At least, that's what it's supposed to mean. If that doesn't make sense in your case, could you attach a small test program with the struct in question and show what evaluations incorrectly return that error message incorrectly?

0 user1494644 7 年多前回复 Susan Yang

Prodigy 110 points

谢谢你的解答，刚才有新的进展，我手头有两块板子，一块焊接了28069PFPS，另一块焊接了28069FPNT ,我在程序中定义了两个long 型变量 TEMPC和TEMPD，给TEMPC幅值13107（0.8的Q14)，通过调用函数_IQ14isqrt（）求其开方倒数，将其赋值给TEMPD，结果是28069PFPS板子执行正常，28069FPNT板子错误，如下图，不可能是两个片子不同吧，

28069PFPS板子执行如下：