diff options
Diffstat (limited to 'mpm/python/usrp_mpm')
| -rw-r--r-- | mpm/python/usrp_mpm/sysfs_gpio.py | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/mpm/python/usrp_mpm/sysfs_gpio.py b/mpm/python/usrp_mpm/sysfs_gpio.py index ea423dc00..bbd428c0d 100644 --- a/mpm/python/usrp_mpm/sysfs_gpio.py +++ b/mpm/python/usrp_mpm/sysfs_gpio.py @@ -101,21 +101,26 @@ class SysFSGPIO(object): API for accessing GPIOs mapped into userland via sysfs """ - def __init__(self, label, use_mask, ddr): + def __init__(self, label, use_mask, ddr, init_value=0): assert (use_mask & ddr) == ddr self.log = get_logger("SysFSGPIO") self._label = label self._use_mask = use_mask self._ddr = ddr + self._init_value = init_value self.log.trace("Generating SysFSGPIO object for label `{}'...".format(label)) self._gpio_dev, self._map_info = find_gpio_device(label, self.log) if self._gpio_dev is None: self.log.error("Could not find GPIO device with label `{}'.".format(label)) self.log.trace("GPIO base number is {}".format(self._map_info.get("sys_number"))) self._base_gpio = self._map_info.get("sys_number") - self.init(self._map_info['ngpio'], self._base_gpio, self._use_mask, self._ddr) + self.init(self._map_info['ngpio'], + self._base_gpio, + self._use_mask, + self._ddr, + self._init_value) - def init(self, n_gpio, base, use_mask, ddr): + def init(self, n_gpio, base, use_mask, ddr, init_value=0): """ Guarantees that all the devices are created accordingly @@ -127,11 +132,13 @@ class SysFSGPIO(object): for gpio_idx in gpio_list: gpio_num = base + gpio_idx ddr_out = ddr & (1<<gpio_idx) + ini_v = init_value & (1<<gpio_idx) gpio_path = os.path.join(GPIO_SYSFS_BASE_DIR, 'gpio{}'.format(gpio_num)) if not os.path.exists(gpio_path): self.log.trace("Creating GPIO path `{}'...".format(gpio_path)) open(os.path.join(GPIO_SYSFS_BASE_DIR, 'export'), 'w').write('{}'.format(gpio_num)) ddr_str = 'out' if ddr_out else 'in' + ddr_str = 'high' if ini_v else ddr_str self.log.trace("On GPIO path `{}', setting DDR mode to {}.".format(gpio_path, ddr_str)) open(os.path.join(GPIO_SYSFS_BASE_DIR, gpio_path, 'direction'), 'w').write(ddr_str) |