Version v3.16: added wfi status for wiringPiISR and waitForInterrupt
This commit is contained in:
phylax2020
@@ -482,7 +482,7 @@ static int isrFds [64] =
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// ISR Data
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static int chipFd = -1;
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static void (*isrFunctions [64])(unsigned int, long long int) ;
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static void (*isrFunctions [64])(struct WPIWfiStatus) ;
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static pthread_t isrThreads[64];
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static int isrMode[64]; // irq on rising/falling edge
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static unsigned long isrDebouncePeriodUs [64]; // 0: debounce is off
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@@ -2637,28 +2637,32 @@ unsigned int digitalReadByte2 (void)
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* This is actually done via the /dev/gpiochip interface regardless of
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* the wiringPi access mode in-use. Maybe sometime it might get a better
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* way for a bit more efficiency.
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* Returns timestamp in microseconds on interrupt
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* Returns struct WPIWfiStatus
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*********************************************************************************
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*/
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long long int waitForInterrupt (int pin, int edgeMode, int mS, unsigned long debounce_period_us) // ms < 0 wait infinite, = 0 return immediately, > 0 wait timeout
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struct WPIWfiStatus waitForInterrupt (int pin, int edgeMode, int mS, unsigned long debounce_period_us) // ms < 0 wait infinite, = 0 return immediately, > 0 wait timeout
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{
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long long int ret;
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int ret;
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int fd, attr, status, readret;
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struct pollfd polls ;
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struct gpio_v2_line_event evdata;
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struct gpio_v2_line_config config;
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struct gpio_v2_line_request req;
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const char* strmode = "";
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struct WPIWfiStatus wfiStatus;
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if (wiringPiMode == WPI_MODE_PINS)
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pin = pinToGpio [pin] ;
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else if (wiringPiMode == WPI_MODE_PHYS)
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pin = physToGpio [pin] ;
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memset(&wfiStatus, 0, sizeof(wfiStatus));
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/* open gpio */
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if (wiringPiGpioDeviceGetFd()<0) {
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return -1;
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wfiStatus.status = -1;
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return wfiStatus;
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}
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memset(&req, 0, sizeof(req));
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@@ -2671,9 +2675,10 @@ long long int waitForInterrupt (int pin, int edgeMode, int mS, unsigned long deb
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default:
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case INT_EDGE_SETUP:
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if (wiringPiDebug) {
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printf ("wiringPi: waitForInterruptMode mode INT_EDGE_SETUP - exiting\n") ;
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printf ("waitForInterrupt: edgeMode INT_EDGE_SETUP - exiting\n") ;
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}
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return -1;
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wfiStatus.status = -1;
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return wfiStatus;
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case INT_EDGE_FALLING:
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config.flags |= GPIO_V2_LINE_FLAG_EDGE_FALLING;
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strmode = "falling";
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@@ -2705,11 +2710,12 @@ long long int waitForInterrupt (int pin, int edgeMode, int mS, unsigned long deb
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status = ioctl(chipFd, GPIO_V2_GET_LINE_IOCTL, &req);
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if (status == -1) {
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ReportDeviceError("GPIO_V2_GET_LINE_IOCTL", pin , strmode, status);
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return -1;
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wfiStatus.status = -1;
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return wfiStatus;
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}
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if (wiringPiDebug) {
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printf ("wiringPi: GPIO get line %d , mode %s succeded, fd=%d\n", pin, strmode, req.fd) ;
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printf ("waitForInterrupt: GPIO get line %d , mode %s succeded, fd=%d\n", pin, strmode, req.fd) ;
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}
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fd = req.fd;
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@@ -2732,53 +2738,66 @@ long long int waitForInterrupt (int pin, int edgeMode, int mS, unsigned long deb
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polls.events = POLLIN | POLLPRI;
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polls.revents = 0;
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ret = (long long int)poll(&polls, 1, mS);
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ret = poll(&polls, 1, mS);
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if (ret < 0) {
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if (wiringPiDebug)
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fprintf(stderr, "wiringPi: ERROR: poll returned=%lld\n", ret);
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if (wiringPiDebug) {
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fprintf(stderr, "waitForInterrupt: ERROR: poll returned=%d\n", ret);
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}
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wfiStatus.status = -1;
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} else if (ret == 0) {
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if (wiringPiDebug)
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fprintf(stderr, "wiringPi: timeout: poll returned=%lld\n", ret);
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if (wiringPiDebug) {
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fprintf(stderr, "waitForInterrupt: timeout: poll returned=%d\n", ret);
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}
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wfiStatus.status = 0;
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}
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else {
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if (wiringPiDebug)
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printf ("wiringPi: IRQ line %d received %lld, fd=%d\n", pin, ret, isrFds[pin]) ;
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printf ("waitForInterrupt: IRQ line %d received %d, fd=%d\n", pin, ret, isrFds[pin]) ;
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if (polls.revents & POLLIN) {
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/* read event data */
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readret = read(isrFds [pin], &evdata, sizeof(evdata));
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if (readret == sizeof(evdata)) {
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if (wiringPiDebug)
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printf ("wiringPi: IRQ at PIN: %d, timestamp: %lld\n", evdata.offset, evdata.timestamp_ns) ;
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printf ("waitForInterrupt: IRQ at PIN: %d, timestamp: %lld\n", evdata.offset, evdata.timestamp_ns) ;
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switch (evdata.id) {
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case GPIO_V2_LINE_EVENT_RISING_EDGE:
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wfiStatus.edge = INT_EDGE_RISING;
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if (wiringPiDebug)
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printf("wiringPi: rising edge\n");
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printf("waitForInterrupt: rising edge\n");
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break;
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case GPIO_V2_LINE_EVENT_FALLING_EDGE:
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wfiStatus.edge = INT_EDGE_FALLING;
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if (wiringPiDebug)
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printf("wiringPi: falling edge\n");
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printf("waitForInterrupt: falling edge\n");
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break;
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default:
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wfiStatus.edge = INT_EDGE_SETUP; // edge = 0
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if (wiringPiDebug)
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printf("wiringPi: unknown event\n");
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printf("waitForInterrupt: unknown event\n");
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break;
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}
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ret = evdata.timestamp_ns / 1000LL; // nanoseconds u64 to microseconds
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wfiStatus.timeStamp_us = evdata.timestamp_ns / 1000LL; // nanoseconds u64 to microseconds
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wfiStatus.gpioPin = evdata.offset;
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wfiStatus.status = 1;
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}
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else {
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ret = -1;
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wfiStatus.status = -1;
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}
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}
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else {
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wfiStatus.status = -1;
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}
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}
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if (isrFds[pin] > 0) {
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close(isrFds [pin]); // release line
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isrFds [pin] = -1;
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isrDebouncePeriodUs[pin] = 0;
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}
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return ret;
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return wfiStatus;
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}
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/*
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@@ -2850,6 +2869,7 @@ void *interruptHandler (void *arg)
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struct gpio_v2_line_config config;
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struct gpio_v2_line_request req;
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struct gpio_v2_line_event evdat[64];
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struct WPIWfiStatus wfiStatus;
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struct timespec tspec = {0, 5e5}; /* 0.5 ms timeout {0, 1e6} */
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pin = *(int *)arg;
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@@ -2957,7 +2977,27 @@ void *interruptHandler (void *arg)
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if (isrFunctions [pin]) {
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if (wiringPiDebug)
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printf( "interruptHandler: GPIO EVENT at %" PRIu64 " on line %d (%d|%d) \n", (uint64_t)evdat[i].timestamp_ns, evdat[i].offset, evdat[i].line_seqno, evdat[i].seqno);
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isrFunctions [pin] ((unsigned int)pin, evdat[i].timestamp_ns/1000LL) ;
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wfiStatus.status = 1;
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wfiStatus.gpioPin = pin;
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switch (evdat[i].id) {
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case GPIO_V2_LINE_EVENT_RISING_EDGE:
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wfiStatus.edge = INT_EDGE_RISING;
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if (wiringPiDebug)
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printf("waitForInterrupt: rising edge\n");
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break;
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case GPIO_V2_LINE_EVENT_FALLING_EDGE:
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wfiStatus.edge = INT_EDGE_FALLING;
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if (wiringPiDebug)
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printf("waitForInterrupt: falling edge\n");
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break;
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default:
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wfiStatus.edge = INT_EDGE_SETUP; // edge = 0
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if (wiringPiDebug)
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printf("waitForInterrupt: unknown event\n");
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break;
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}
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wfiStatus.timeStamp_us = evdat[i].timestamp_ns/1000LL;
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isrFunctions [pin] (wfiStatus) ;
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}
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}
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}
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@@ -2982,7 +3022,7 @@ void *interruptHandler (void *arg)
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*********************************************************************************
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*/
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int wiringPiISR (int pin, int edgeMode, void (*function)(unsigned int, long long int), unsigned long debounce_period_us)
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int wiringPiISR (int pin, int edgeMode, void (*function)(struct WPIWfiStatus wfiStatus), unsigned long debounce_period_us)
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{
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const int maxpin = GetMaxPin();
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@@ -299,8 +299,16 @@ extern void digitalWriteByte2 (int value) ;
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// Interrupts
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// (Also Pi hardware specific)
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extern long long int waitForInterrupt (int pin, int edgeMode, int mS, unsigned long debounce_period_us) ; // V3.14 phylax
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extern int wiringPiISR (int pin, int mode, void (*function)(unsigned int, long long int), unsigned long debounce_period_us) ; // v3.14 phylax
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// status returned from waitForInterrupt V3.16
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struct WPIWfiStatus {
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int status; // -1: error, 0: timeout, 1: valud values for edge and timeStamp_us
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unsigned int gpioPin; // gpio as BCM pin
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int edge; // One of INT_EDGE_FALLING or INT_EDGE_RISING
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long long int timeStamp_us; // time stamp in microseconds, when interrupt happened
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};
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extern struct WPIWfiStatus waitForInterrupt (int pin, int edgeMode, int mS, unsigned long debounce_period_us) ; // V3.16 phylax
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extern int wiringPiISR (int pin, int mode, void (*function)(struct WPIWfiStatus wfiStatus), unsigned long debounce_period_us) ; // v3.16 phylax
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extern int wiringPiISRStop (int pin) ; //V3.2
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// Threads
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