我试图编程一个非阻塞led指示灯。Arduino编译器抛出“一元*的无效类型参数”
为此我程序性有点类:
03: class timer {
04: private:
05: int startMillis;
06: int delayMillis;
07: public:
08: timer (int pDelay) {
09: reset (pDelay);
10: }
11: void start() {
12: startMillis = millis();
13: }
14: void reset (int pDelay) {
15: delayMillis = pDelay;
16: }
17: boolean checkTimer() {
18: if ((millis() - startMillis) >= delayMillis) {
19: return true;
20: } else {
21: return false;
22: }
23: }
24: };
然后我想要做的循环是这样的():
42: void switchLed (int *pPin, timer *pTimer) {
43: if ((*pTimer->checkTimer()) == true) {
44: if (bitRead(PORTD, *pPin) == HIGH) {
45: digitalWrite(*pPin, LOW);
46: } else {
47: digitalWrite(*pPin, HIGH);
48: }
49: *pTimer->start();
50: }
51: }
我称之为循环的switchLed()()函数与参数“(& led [0],& ledTimer01)”。 我认为它应该工作,但是我的编译器说
nonblockingblink:5: error: 'timer' has not been declared
nonblockingblink.ino: In function 'void switchLed(int*, timer*)':
nonblockingblink:43: error: invalid type argument of 'unary *'
nonblockingblink:49: error: void value not ignored as it ought to be
问题出在哪里? 感谢您的帮助:)。
你在哪里有代码(我的意思是文件)?你如何编译它? – m0skit0 2013-02-21 20:56:22
有一件事是,'pTimer->'前面的指针,当使用' - >'符号时,不要在它之前使用'*') – 2013-02-21 20:57:05
'* pTimer-> checkTimer()'应该是'pTimer-> checkTimer()'。 – 2013-02-21 20:57:18