Im trying to create a program which will interrupt when I press the button. I have Atmega8 and I use Microchip studio for coding.
I checked the document about interrupts on atmega's website however I can't say I totally got it.
Here is my code:
#define F_CPU 1000000UL
#define IRQ1 INT0_vect
#define IRQ2 INT1_vect
#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>
void init()
{
DDRB=0b11111111;
PORTB=255;
_delay_ms(2000);
PORTB=0;
DDRD = 0b00000000;
GICR=0xc0;
MCUCR=0x08;
}
int main(void){
init();
volatile int mode = 0;
ISR(IRQ1){
_delay_ms(500);
if (mode<3)mode++; else mode = 0;
}
ISR(IRQ2){
_delay_ms(150);
}
}
Errors I get:
Imgur
I would be glad if any admin edits my question and add picture here, website doesn't let me add photo because I need at least 10 reputation to post image
Don't try to define functions inside of other functions unless you really know what you are doing. You should move the ISR definitions to the top level of the file, putting them outside of main.
Related
I would like to know the proper procedure for calling a .dll file with also having a .cpp and .h files for a certain application. I have a program which is the .cpp file with different .h header files and I also included the .dll file into the folder where the .cpp and .h files are located. I would like to know in the .cpp code how am I able to call upon this .dll file since inside of it there are different functions that will allow a DDC264 Evaluation Board to read data from memory through usb and extract the data. I am using a program called DevC++ and I am receiving a current Error which is [Id] returned 1 exit status and MakefileWin has changed.
Attached below is a snippit of the .cpp code:
I also would like to know how to fix both of these errors .enter image description hereenter image description here
// USB_IO_for_VB6.cpp : Defines the entry point for the DLL application.
//
#include "stdafx.h"
#include "USB_IO_For_VB6.h"
#include "CyAPI.h"
#include <cstring>
#include <malloc.h>
#include "BASETSD.H"
#include <math.h>
#include <stdio.h>
// #include <string.h>
BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}
// This is an example of an exported variable
//int USB_IO_FOR_VB6_EXPORTS int USB_IO_for_VB6_API =22;
I
USB_IO_FOR_VB6_API int nUSB_IO_for_VB6 = 22;
#define STRINGLEN 65536 //the larger this number is, the faster the data is shifted in.
#define MAX_CHANNELS_FAST 4096 // 2048= 1024A + 1024B
#define DBP 0 //debug print - 1 enables writing some information to a file in "C:\temp\"
// This function reads the device descriptors from the Cypress USB Chip(s).
// It returns arrays of values, one set of values per device detected.
// The user can then use the visual basic software to select which device to use.
int __stdcall ReadDeviceDescriptors(int *USBdevCount, int *bLengthPass, int *bDescriptorTypePass,
long *bcdUSBPass, int *bDeviceClassPass, int *bDeviceSubClassPass,
int *bDeviceProtocolPass, int *bMaxPacketSize0Pass, long *idVendorPass,
long *idProductPass, long *bcdDevicePass, int *iManufacturerPass,
int *iProductPass, int *iSerialNumberPass, int *bNumConfigurationsPass)
{
CCyUSBDevice *USBDevice;
USB_DEVICE_DESCRIPTOR descr;
USBDevice = new CCyUSBDevice(NULL); // Create an instance of CCyUSBDevice
USBdevCount[0] = USBDevice->DeviceCount();
for (int i=0; i < USBDevice->DeviceCount(); i++)
{
if (USBDevice->Open(i))
{
USBDevice->GetDeviceDescriptor(&descr);
bLengthPass[i]=descr.bLength;
bDescriptorTypePass[i]=descr.bDescriptorType;
bcdUSBPass[i]=descr.bcdUSB;
bDeviceClassPass[i]=descr.bDeviceClass;
bDeviceSubClassPass[i]=descr.bDeviceSubClass;
bDeviceProtocolPass[i]=descr.bDeviceProtocol;
bMaxPacketSize0Pass[i]=descr.bMaxPacketSize0;
idVendorPass[i]=descr.idVendor;
idProductPass[i]=descr.idProduct;
bcdDevicePass[i]=descr.bcdDevice;
iManufacturerPass[i]=descr.iManufacturer;
iProductPass[i]=descr.iProduct;
iSerialNumberPass[i]=descr.iSerialNumber;
bNumConfigurationsPass[i]=descr.bNumConfigurations;
USBDevice->Close();
}
}
return( USBdevCount[0] );
}
I am not sure about how to go about calling a .dll file in C++, I am fairly new to Object Oriented programming.
Regarding the MakefileWin error I tried changing the TDM-GCC release version from 32 to 64 bits and the error continues.
I also tried deleting the dllmain.cpp which is another cpp file that is not needed and moving another original.cpp file from the folder that is shown in one of the images.
I only have a single .cpp file running on my DevC++ compiler which I thought would not cause the Error [Id] returned 1 to exit status to pop up.
This question already has answers here:
C++ Global variable declaration
(5 answers)
Closed 9 months ago.
I am working on a project on Arduino ESP32 and I have a lot of Global variables (for data generation). I have decided to create a library in order to orgenise my work a little better. But I use this library into other librari's that I had to create for other usage. after compilation it I have the following error :
sketch\OX2inj_LEVEL_OX2.cpp.o:(.data.addrChipId+0x0): multiple definition of `addrChipId'
sketch\First_Useage.cpp.o:(.data.addrChipId+0x0): first defined here
sketch\OX2inj_LEVEL_OX2.cpp.o:(.bss.ChipID+0x0): multiple definition of `ChipID'
sketch\First_Useage.cpp.o:(.bss.ChipID+0x0): first defined here
here is my .ino (main) code :
#include <Arduino.h>
#include "Var_Str_EEPROM.h"
#include "Def_Global_Var.h"
#include "First_Useage.h"
//---------somthing
void setup()
{
Serial.begin(115200);
//---------somthing
Serial.println(ChipID.ReadStrEEPROM());
//---------somthing
}
void loop()
{
//---------somthing
}
here is my "Def_Global_Var.h" code
#ifndef Def_Global_Var_H
#define Def_Global_Var_H
#include "Var_Str_EEPROM.h"
uint16_t addrChipId = 1;
VarStrEEPROM ChipID(addrChipId);
#endif
here is my "First_Useage.h" code
#ifndef First_Usage_H
#define First_Usage_H
void getchipid();
#endif
here is my "First_Useage.cpp" code :
#include "First_Useage.h"
#include <Arduino.h>
#include "Var_Str_EEPROM.h"
#include "Def_Global_Var.h"
void getchipid()
{
uint32_t chipId = 0;
for(int i=0; i<17; i=i+8)
chipId |= ((ESP.getEfuseMac() >> (40 - i)) & 0xff) << i;
ChipID.WriteStrEEPROM(String(chipId));
}
My understanding is that, when I use the #include "Def_Global_Var.h", the programme thinks that : "I am calling the library" and it sees that it has been called before and it does not like it.
Is it somehow correct ? and if it is(or not) correct what should I do?
EDIT : sorry I have put the wrong part of the prog. it has been corrected now
The actual cause is that the header is included into several source files, so you end up with multiple conflicting definitions of these variables in your .o files.
You shouldn't normally define global variables in header files at all; you should only declare them as extern:
#ifndef Def_Global_Var_H
#define Def_Global_Var_H
...
extern uint16_t addrChipId;
...
#endif
The second step is to define the variable in the corresponding .cpp file, this time without the extern keyword:
// Def_Global_Var.cpp
uint16_t addrChipId = 1;
Since Def_Global_Var.o gets linked only once, there should be no more conflicts.
I used PIC16F877 and my purpose is to choose CHANNEL 4 to display the analogue input AN4 value on PortD leds. The approximate value is about 1V. I wrote a code and however, no matter how I ran my code, there're not reaction with the GPIO monitor.
By the way, do I write ReadADC1() in the while(1){} loop? I tried that, but there's no help. Thanks.
#include <xc.h>
#define LEDs PORTD
#include "prologue.c"
unsigned char ReadADC1(void) {
ADCON0 |= 0b00000010;
while ( (ADCON0 & 0b00000010) );
return ADRESH;
}
main ()
{
// declare variables if any required
TRISA= 0B00100000;
ANSEL=0B00010000;
ADCON0 = 0b11010001;
ADCON1 = 0b10000000;
LEDs=ReadADC1();
//*** your code for initialisation if required
//*** end of your initialisation
//*** your code for the superloop
while (1) {
}
//*** end of the superloop
}
There's no reaction with the GPIO pins monitor. I restarted the IDE many times.
By default all ports are configured as an input. If you want want use a port as an output you had to change the configuration:
TRISD = 0x00;
Another issue:
There is no ANSEL register in this controller, you had to do the selection (digital or analog input) with ADCON1register.
I’m making a standalone ROOT application which should terminate upon closing a canvas. The following is my experimental code.
#include "TROOT.h"
#include "TApplication.h"
#include "TCanvas.h"
int main(){
TApplication *myapp=new TApplication("myapp",0,0);
TCanvas *c1 =new TCanvas("c1","Canvas Test",800,800);
c1->Connect("TCanvas", "Closed()", "TApplication",gApplication, "Terminate()");
myapp->Run();
return 0;
}
The code compiles without any warnings. The canvas opens when I run it. But when I close the the canvas, application doesn’t terminate and the terminal doesn’t prompt. Any suggestions ?
_ROOT Version: 6.20
_Platform: Ubuntu 20.04
_Compiler: g++
Thanks to #bellenot from root-forum for providing the following solution. Apparently, for ROOT 6 & above, This should be done with a TRootCanvas object.
#include "TROOT.h"
#include "TApplication.h"
#include "TCanvas.h"
#include "TRootCanvas.h"
int main()
{
TApplication *myapp = new TApplication("myapp", 0, 0);
TCanvas *c1 = new TCanvas("c1","Canvas Test",800,800);
TRootCanvas *rc = (TRootCanvas *)c1->GetCanvasImp();
rc->Connect("CloseWindow()", "TApplication", gApplication, "Terminate()");
myapp->Run();
return 0;
}
How can I change state of the camera flash throgh JNI function? I am looking to be able to have ON/OFF state control, just like in Java CameraManager.setTorchMode(cameraId, state); method. I've tried to search for it in native camera API ,but no success. Here's what I have done so far:
#include <jni.h>
#include <assert.h>
#include <jni.h>
#include <pthread.h>
#include <android/native_window_jni.h>
#include <camera/NdkCameraDevice.h>
#include <camera/NdkCameraManager.h>
#include <android/asset_manager.h>
#include "messages-internal.h"
JNIEXPORT void JNICALL
Java_com_android_rxjava_flashlightflicker_MainActivity_flasher(JNIEnv *env, jobject instance) {
ACameraIdList *cameraIdList = NULL;
const char *selectedCameraId = NULL;
ACameraManager *cameraManager = ACameraManager_create();
camera_status_t camera_status = ACAMERA_OK;
camera_status = ACameraManager_getCameraIdList(cameraManager, &cameraIdList);
/// Camera status not ok
if (camera_status != ACAMERA_OK) {
LOGE("Camera is bad id: %d \n", camera_status);
return;
}
// There is no camera
if (cameraIdList->numCameras < 1 ) {
LOGE("Camera is not present on the device.");
return;
}
selectedCameraId = cameraIdList->cameraIds[0];
ACameraMetadata *cameraMetedata = NULL;
ACameraManager_getCameraCharacteristics(cameraManager, selectedCameraId, &cameraMetedata);
// ACaptureSessionOutput_create()
}
I also tried to look in asset manager but no success, can anybody experienced with NDK camera give me a hand with it?
Thanks in advance!
This method is only available in Java API. You could access it through JNI, but IMO it would be easier and safer to write a wrapper static method in Java and have this wrapper called from your C++ code.