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GPIO example application: Add support for changing pintypes

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This commit is contained in:
Jari van Ewijk 2021-12-09 15:28:53 +01:00 committed by Xiang Xiao
parent 0577bd2c33
commit 71f5af47e4
1 changed files with 67 additions and 11 deletions
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78
examples/gpio/gpio_main.c
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@ -41,18 +41,31 @@
static void show_usage(FAR const char *progname)
{
fprintf(stderr, "USAGE: %s [-w <signo>] [-o <value>] <driver-path>\n",
progname);
fprintf(stderr, "USAGE: %s [-t <pintype>] [-w <signo>] [-o <value>] "
"<driver-path>\n", progname);
fprintf(stderr, " %s -h\n", progname);
fprintf(stderr, "Where:\n");
fprintf(stderr, "\t<driver-path>: The full path to the GPIO pin "
"driver.\n");
fprintf(stderr,
"\t-w <signo>: Wait for an signal if this is an interrupt pin.\n");
fprintf(stderr,
"\t-o <value>: Write this value (0 or 1) if this is an output "
"pin.\n");
fprintf(stderr, "\t-t <pintype>: Change the pin to this pintype "
"(0-10):\n");
fprintf(stderr, "\t-w <signo>: Wait for a signal if this is an "
"interrupt pin.\n");
fprintf(stderr, "\t-o <value>: Write this value (0 or 1) if this is an "
"output pin.\n");
fprintf(stderr, "\t-h: Print this usage information and exit.\n");
fprintf(stderr, "Pintypes:\n");
fprintf(stderr, "\t 0: GPIO_INPUT_PIN\n");
fprintf(stderr, "\t 1: GPIO_INPUT_PIN_PULLUP\n");
fprintf(stderr, "\t 2: GPIO_INPUT_PIN_PULLDOWN\n");
fprintf(stderr, "\t 3: GPIO_OUTPUT_PIN\n");
fprintf(stderr, "\t 4: GPIO_OUTPUT_PIN_OPENDRAIN\n");
fprintf(stderr, "\t 5: GPIO_INTERRUPT_PIN\n");
fprintf(stderr, "\t 6: GPIO_INTERRUPT_HIGH_PIN\n");
fprintf(stderr, "\t 7: GPIO_INTERRUPT_LOW_PIN\n");
fprintf(stderr, "\t 8: GPIO_INTERRUPT_RISING_PIN\n");
fprintf(stderr, "\t 9: GPIO_INTERRUPT_FALLING_PIN\n");
fprintf(stderr, "\t10: GPIO_INTERRUPT_BOTH_PIN\n");
}
/****************************************************************************
@ -67,6 +80,8 @@ int main(int argc, FAR char *argv[])
{
FAR char *devpath = NULL;
enum gpio_pintype_e pintype;
enum gpio_pintype_e newpintype;
bool havenewtype = false;
bool havesigno = false;
bool invalue;
bool outvalue = false;
@ -92,13 +107,34 @@ int main(int argc, FAR char *argv[])
return EXIT_FAILURE;
}
if (strcmp(argv[ndx], "-w") == 0)
if (strcmp(argv[ndx], "-t") == 0)
{
havenewtype = true;
if (++ndx >= argc)
{
fprintf(stderr, "ERROR: Missing argument to -t\n");
show_usage(argv[0]);
return EXIT_FAILURE;
}
newpintype = atoi(argv[ndx]);
if (++ndx >= argc)
{
fprintf(stderr, "ERROR: Missing required <driver-path>\n");
show_usage(argv[0]);
return EXIT_FAILURE;
}
}
if (ndx < argc && strcmp(argv[ndx], "-w") == 0)
{
havesigno = true;
if (++ndx >= argc)
{
fprintf(stderr, "ERROR: Missing argument to -o\n");
fprintf(stderr, "ERROR: Missing argument to -w\n");
show_usage(argv[0]);
return EXIT_FAILURE;
}
@ -160,14 +196,29 @@ int main(int argc, FAR char *argv[])
return EXIT_FAILURE;
}
/* Set the new pintype */
if (havenewtype)
{
ret = ioctl(fd, GPIOC_SETPINTYPE, (unsigned long) newpintype);
if (ret < 0)
{
int errcode = errno;
fprintf(stderr, "ERROR: Failed to set pintype on %s: %d\n",
devpath, errcode);
close(fd);
return EXIT_FAILURE;
}
}
/* Get the pin type */
ret = ioctl(fd, GPIOC_PINTYPE, (unsigned long)((uintptr_t)&pintype));
if (ret < 0)
{
int errcode = errno;
fprintf(stderr, "ERROR: Failed to read pintype from %s: %d\n",
devpath, errcode);
fprintf(stderr, "ERROR: Failed to read pintype from %s: %d\n", devpath,
errcode);
close(fd);
return EXIT_FAILURE;
}
@ -251,6 +302,11 @@ int main(int argc, FAR char *argv[])
break;
case GPIO_INTERRUPT_PIN:
case GPIO_INTERRUPT_HIGH_PIN:
case GPIO_INTERRUPT_LOW_PIN:
case GPIO_INTERRUPT_RISING_PIN:
case GPIO_INTERRUPT_FALLING_PIN:
case GPIO_INTERRUPT_BOTH_PIN:
{
printf(" Interrupt pin: Value=%u\n", invalue);