interrupt

问题 I've begun writing some code using PySerial to send and receive data to a serial device. Up until now I've only been working on initiating a transaction from a terminal and receiving a response from the serial device. pseudo: main: loop: message = get_message() send_to_serial(message) time_delay(1 second) read_response() Now I'd like to implement a listener on that port in the case that the serial device is the one initiating the communication. Also to remove the time_delay which could end up

问题 I've begun writing some code using PySerial to send and receive data to a serial device. Up until now I've only been working on initiating a transaction from a terminal and receiving a response from the serial device. pseudo: main: loop: message = get_message() send_to_serial(message) time_delay(1 second) read_response() Now I'd like to implement a listener on that port in the case that the serial device is the one initiating the communication. Also to remove the time_delay which could end up

问题 void __attribute__((__interrupt__, no_auto_psv)) _T1Interrupt(void) // 5 Hz __attribute__ directive or macro is from GCC but __interrupt__ and no_auto_psv is not , it's specific to a hardware. So, how does GCC Compiler understand __interrupt__ and no_auoto_psv , I searched and didn't find any declaration in anywhere else. So basically the _T1Interrupt function takes no argument and return nothing but has the above attribute? 回答1: In particular, these attributes are platform-specific

问题 void __attribute__((__interrupt__, no_auto_psv)) _T1Interrupt(void) // 5 Hz __attribute__ directive or macro is from GCC but __interrupt__ and no_auto_psv is not , it's specific to a hardware. So, how does GCC Compiler understand __interrupt__ and no_auoto_psv , I searched and didn't find any declaration in anywhere else. So basically the _T1Interrupt function takes no argument and return nothing but has the above attribute? 回答1: In particular, these attributes are platform-specific

问题 I'm trying to recieve communication from an USART in interrupt mode. The debugger shows me that the interrupt is getting called on a keypress, but the execution gets stuck in the vector table definition. I initialize my usart with the following. static void MX_USART2_UART_Init(void) { huart2.Instance = USART2; huart2.Init.BaudRate = 19200; huart2.Init.WordLength = UART_WORDLENGTH_8B; huart2.Init.StopBits = UART_STOPBITS_1; huart2.Init.Parity = UART_PARITY_NONE; huart2.Init.Mode = UART_MODE_TX

问题 It seems to me that once a thread starts reading input via System.console().readLine() or System.in.read() , there is absolutely no way in the universe to functionally interrupt the read, except for System.exit() or providing input. interrupt() ing the reading thread does nothing. Even stop() ing it does nothing. close() ing System.in during System.in.read() does nothing until after the read completes by providing input. The read methods don't take any timeout parameters nor time out on their

问题 I'm trying to read NMEA message in Linux. But I can't get a completely message: 54.441,V,,,,,0.00,0.00,010720,,,N*42 $GPVTG,0.00,T,,M,0.00,N,0.00,K,N*32 $GPGGA,020954.441,,,,,0,0,,,M,,M,,*43 $GPGSA,A,1,,,,,,,,,,,,,,,*1E $GPGSA,A,1,,,,,,,,,,,,,,,*1E $GPGSV,1,1,00*79 $GLGSV,1,1,00*65 $GPGLL,,,,,020954.441,V,N*71 $GP The first line and last line is the one message but it have been splited. I thing, It's cause by sleep 1 second. And It's not right at all. I think I should use interrupt serial. My

问题 I'm working with interrupts and I'm facing this problem while running my code: DATA SEGMENT INPUTV DW 0035H, 0855H, 2011H, 1359H OUTPUTV DB 4 DUP(0) DIVIDER DB 09 ERROR_FLAG DB 0 DATA ENDS _STACK SEGMENT STACK DW 100 DUP(0) TOP_STACK LABEL WORD _STACK ENDS CODE SEGMENT ASSUME CS:CODE, DS:DATA, SS:_STACK MAIN: MOV AX, _STACK MOV SS, AX MOV SP, OFFSET TOP_STACK MOV AX, DATA MOV DS, AX MOV AX, 0000H MOV ES, AX MOV WORD PTR ES:0002, SEG INT_PROC ;PUSHING CS TO STACK MOV WORD PTR ES:0000, OFFSET

问题 I'm working with interrupts and I'm facing this problem while running my code: DATA SEGMENT INPUTV DW 0035H, 0855H, 2011H, 1359H OUTPUTV DB 4 DUP(0) DIVIDER DB 09 ERROR_FLAG DB 0 DATA ENDS _STACK SEGMENT STACK DW 100 DUP(0) TOP_STACK LABEL WORD _STACK ENDS CODE SEGMENT ASSUME CS:CODE, DS:DATA, SS:_STACK MAIN: MOV AX, _STACK MOV SS, AX MOV SP, OFFSET TOP_STACK MOV AX, DATA MOV DS, AX MOV AX, 0000H MOV ES, AX MOV WORD PTR ES:0002, SEG INT_PROC ;PUSHING CS TO STACK MOV WORD PTR ES:0000, OFFSET

问题 I am developing an embedded program for an intel i386, and I am trying to figure out how to use the hardware timer. I have read here (and other places) that the timer interrupt is 0x08, but this page (And various other sources) say that the first 32 interrupts are reserved for exceptions, and interrupt 0x08 specifically is for double fault. Which is true? How can I setup a timer interrupt handler, using either assembly or very low-level C with no operating system calls? I am developing a