在Arduino库中传递数组
在Arduino库中传递数组
提问于 2013-03-12 12:03:53
我正在尝试编写一个库，读取5个变量，然后通过串口将它们发送到蓝牙接收器，我收到了许多错误，但我不确定从哪里开始，我需要实现指针吗？
这是Arduino代码...
#include <serialComms.h>
serialComms testing;
void setup()
{
Serial.begin(9600);
}
char data[] = {1,2,3,4,5,6};
void loop()
{
for(int t = 0;t<6;t++)
{
data[t] = data[t]++;
}
testing.updateUser(data);
delay(250);
}serialComms.cpp
#include <Arduino.h>
#include <serialComms.h>
void serialComms::init()
{
// This is where the constructor would be...right now we are too stupid to have one
}
void serialComms::readAllBytes() // Target Pin,Values
{
}
void serialComms::assignBytes()
{
for(int t = 0;t<5;t++)
{
digitalWrite(12,HIGH);
delay(250);
digitalWrite(12,LOW);
}
}
void serialComms::updateUser(char t[])
{
Serial.write(t,5);
}serialComms.h
#ifndef serialComms_h
#define serialComms_h
/* serialComms Class */
class serialComms
{
public:
serialComms() {};
void init();
void readAllBytes(); // Will be used to create the array --> two variables for now...
void assignBytes();
void updateUser(char t[]);
};
#endif下面是我收到的错误信息...- serialComms.cpp:28:错误:初始化'virtual size_t Print::write(const uint8_t*，size_t)‘的参数1
-
- serialComms.cpp:28: error: invalid conversion from 'char*' to 'const uint8_t*'
- serialComms.cpp: In member function 'void serialComms::updateUser(char*)':
- serialComms.cpp:27: error: expected primary-expression before ']' token回答 2
Stack Overflow用户
回答已采纳
发布于 2013-03-12 21:22:35
示例：
void setup()
{
Serial.begin(9600);
char string_array[] = "hello";
char data_array[] = {1,2,3,4,5,6};
unsigned char data_array_uchar[] = {21,22,23,24,25,26};
uint8_t uint8_array[] = {11,12,13,14,15,16};
char alpha_array[] = {0x41,0x42,0x43,0x44,0x45,0x46};
// take note that sizeof() is a precompile command... number of places/size of each place.
updateUserPrint(string_array);
updateUserWrite(data_array, sizeof(string_array));
updateUserWriteUchar(data_array_uchar, sizeof(data_array_uchar));
updateUserWriteUchar(uint8_array, sizeof(uint8_array));
updateUserWriteUint(uint8_array, sizeof(string_array));
updateUserAlpha(alpha_array, sizeof(string_array));
}
void updateUserPrint(char *s)
{ //note a string aka array of char's is ended with a null.
Serial.print(s); // this can detect.
Serial.println();
}
void updateUserWrite(char *t, size_t len)
{ //note an array of int's is not ended with a null. so you need to know how long it is.
for (int n = 0; n < len ; n++) {
Serial.print(t[n],DEC);
Serial.print(",");
}
Serial.println();
}
void updateUserWriteUchar(unsigned char *t, size_t len)
{ //note an array of int's is not ended with a null. so you need to know how long it is.
for (int n = 0; n < len ; n++) {
Serial.print(t[n],DEC);
Serial.print(",");
}
Serial.println();
}
void updateUserWriteUint(uint8_t *t, size_t len)
{ //note an array of int's is not ended with a null. so you need to know how long it is.
for (int n = 0; n < len ; n++) {
Serial.print(t[n],DEC);
Serial.print(",");
}
Serial.println();
}
void updateUserAlpha(char *t, int len)
{ //note an array of int's is not ended with a null. so you need to know how long it is.
for (int n = 0; n < len ; n++) {
Serial.write(t[n]);
}
Serial.println();
} 生成以下内容：
hello
1,2,3,4,5,6,
21,22,23,24,25,26,
11,12,13,14,15,16,
11,12,13,14,15,16,
ABCDEFStack Overflow用户
发布于 2013-03-12 18:33:13
Serial.write只能发送常量字符串，如
Serial.write(“hello”);这就是错误错误:从'char*‘到'const uint8_t*’的转换无效的原因。
用作
char temp[max_length];
sprintf(temp,"%s",t);
Serial.write(temp);页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/15353092
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