interrupt

问题 (How) can I activate a periodic timer interrupt in Python? For example there is a main loop and a timer interrupt, which should be triggered periodically: def handler(): # do interrupt stuff def main(): init_timer_interrupt(<period>, <handler>); while True: # do cyclic stuff if __name__ == "__main__": main(); I have tried the examples found at Executing periodic actions in Python, but they are all either blocking the execution of main() , or start spawning new threads. 回答1: Any solution will

问题 I am looking for how a RISC-V processor processes interrupt requests. I looked at the Instruction Set Manuals and information on the internet. The focus is on explaining exactly what the title sets: the instruction set. In my view, how interrupts are handled is a question of what is called the "programmer's model" of the processor. It does not clearly fit into a document about an instruction set, because parts of interrupt processing are not expressed in instructions. Clearly, jumping into an

问题 I have an MCU connected to the computer through a serial interface. The MCU might send data at regular intervals or very seldom depending on the type of sensor connected to it. So I want to have a python function that gets called whenever there is data incoming from the serial port instead of polling all the time. After reading a lot of similar questions (Small Example for pyserial using Threading. PySerial/Arduino, PySerial/interrupt mode, Python Serial listener, and so on), I came to the

问题 I have an MCU connected to the computer through a serial interface. The MCU might send data at regular intervals or very seldom depending on the type of sensor connected to it. So I want to have a python function that gets called whenever there is data incoming from the serial port instead of polling all the time. After reading a lot of similar questions (Small Example for pyserial using Threading. PySerial/Arduino, PySerial/interrupt mode, Python Serial listener, and so on), I came to the

问题 I am currently working on an assembly program, but I need to make the program wait every once in a while. So, I have been using int 15h/ah = 86h, but for some reason DosBox is giving me a hard time, and the program either gets confused with pixels (wierd colors) or in the worse case; crash. Can someone please help me? 回答1: I had this issue as well. Based on the answer at Problems with BIOS delay function (INT 15h / AH = 86h), I was able to get it working by making sure to set AL to zero

问题 I am currently working on an assembly program, but I need to make the program wait every once in a while. So, I have been using int 15h/ah = 86h, but for some reason DosBox is giving me a hard time, and the program either gets confused with pixels (wierd colors) or in the worse case; crash. Can someone please help me? 回答1: I had this issue as well. Based on the answer at Problems with BIOS delay function (INT 15h / AH = 86h), I was able to get it working by making sure to set AL to zero

问题 I'm trying to use the "Yet Another PCInt Library" for enabling pin change interrupts on my Arduino mega 2560. In the Arduino IDE, the code compiles fine on windows, but fails on a mac. It gives an error code stating: nullptr not declared in this scope attachInterrupt(pin, (callback)func, nullptr, mode, trigger_now); ^ How can I get this to compile on OS X in the arduino IDE? 回答1: nullptr was introduced into the C++11 standard, and it does not exist in any earlier standards. My best guess is

问题 I'm trying to use the "Yet Another PCInt Library" for enabling pin change interrupts on my Arduino mega 2560. In the Arduino IDE, the code compiles fine on windows, but fails on a mac. It gives an error code stating: nullptr not declared in this scope attachInterrupt(pin, (callback)func, nullptr, mode, trigger_now); ^ How can I get this to compile on OS X in the arduino IDE? 回答1: nullptr was introduced into the C++11 standard, and it does not exist in any earlier standards. My best guess is

问题 If I have a fast interrupt handler (by adding __attribute__((interrupt("FIQ"))) ), can I invoke other non-fast-interrupt function inside the handler? For example, void f() {//...} void g() {//...} void handler() __attribute__((interrupt("FIQ"))) { // ... f(); g(); // ... } I have a fast interrupt handler set up similarly as the example above and it's not working as intended. I used gdb to trace through the handler and I found that things are pushed to the stack during the f function call and

问题 Everyone! I just finished writing my Keyboard Driver. Right now the problem is that my PS/2 MOUSE IRQ won't fire(IRQ 12). I tested this by this code: #include "irq.h" #define PIC_MASTER_CONTROL 0x20 #define PIC_MASTER_MASK 0x21 #define PIC_SLAVE_CONTROL 0xa0 #define PIC_SLAVE_MASK 0xa1 typedef void(*regs_func)(struct regs *r); /*Get all irq's*/ extern "C" void irq0(void); extern "C" void irq1(void); extern "C" void irq2(void); extern "C" void irq3(void); extern "C" void irq4(void); extern "C"