Boolean mraaDigitalCanHandle(SInt32 number, const char *name, SInt32 *remappedNumber)
{
Boolean success = true;
success = mraa_pin_mode_test(number, MRAA_PIN_GPIO);
if (!success)
fprintf(stderr, "pin %d is not digital GPIO\n", number);
return success;
}
mraa_result_t
mraa_intel_galileo_g2_mmap_setup(mraa_gpio_context dev, mraa_boolean_t en)
{
if (dev == NULL) {
syslog(LOG_ERR, "Galileo mmap: context not valid");
return MRAA_ERROR_INVALID_HANDLE;
}
if (mraa_pin_mode_test(dev->phy_pin, MRAA_PIN_FAST_GPIO) == 0) {
syslog(LOG_ERR, "Galileo mmap: mmap not on this pin");
return MRAA_ERROR_NO_RESOURCES;
}
if (en == 0) {
if (dev->mmap_write == NULL) {
syslog(LOG_ERR, "mmap: can't disable disabled mmap gpio");
return MRAA_ERROR_INVALID_PARAMETER;
}
dev->mmap_write = NULL;
mmap_count--;
if (mmap_count == 0) {
return mraa_intel_galileo_g2_mmap_unsetup();
}
return MRAA_SUCCESS;
}
if (dev->mmap_write != NULL) {
syslog(LOG_ERR, "mmap: can't enable enabled mmap gpio");
return MRAA_ERROR_INVALID_PARAMETER;
}
if (mmap_reg == NULL) {
if ((mmap_fd = open(UIO_PATH, O_RDWR)) < 0) {
syslog(LOG_ERR, "mmap: Unable to open UIO device");
return MRAA_ERROR_INVALID_RESOURCE;
}
mmap_reg = mmap(NULL, mmap_size, PROT_READ|PROT_WRITE,
MAP_SHARED, mmap_fd, 0);
if (mmap_reg == MAP_FAILED) {
syslog(LOG_ERR, "mmap: failed to mmap");
mmap_reg = NULL;
close(mmap_fd);
return MRAA_ERROR_NO_RESOURCES;
}
}
if (mraa_setup_mux_mapped(plat->pins[dev->phy_pin].mmap.gpio)
!= MRAA_SUCCESS) {
syslog(LOG_ERR, "mmap: unable to setup required multiplexers");
return MRAA_ERROR_INVALID_RESOURCE;
}
dev->mmap_write = &mraa_intel_galileo_g2_mmap_write;
return MRAA_SUCCESS;
}
/**
* Checks if a pin is able to use the passed in mode.
*
* @param pin Physical Pin to be checked.
* @param mode the mode to be tested.
* @return boolean if the mode is supported, 0=false.
*/
bool pinModeTest(int pin, mraa_pinmodes_t mode)
{
return (bool) mraa_pin_mode_test(pin,mode);
}
