mmio.rst

MMIO

Code Example

from periphery import MMIO

# Open am335x real-time clock subsystem page
rtc_mmio = MMIO(0x44E3E000, 0x1000)

# Read current time
rtc_secs = rtc_mmio.read32(0x00)
rtc_mins = rtc_mmio.read32(0x04)
rtc_hrs = rtc_mmio.read32(0x08)

print("hours: %02x minutes: %02x seconds: %02x" % (rtc_hrs, rtc_mins, rtc_secs))

rtc_mmio.close()

# Open am335x control module page
ctrl_mmio = MMIO(0x44E10000, 0x1000)

# Read MAC address
mac_id0_lo = ctrl_mmio.read32(0x630)
mac_id0_hi = ctrl_mmio.read32(0x634)

print("MAC address: %04x%08x" % (mac_id0_lo, mac_id0_hi))

ctrl_mmio.close()

API

.. autoclass:: periphery.MMIO
    :members:
    :undoc-members:
    :show-inheritance:

.. autoclass:: periphery.MMIOError
    :members:
    :undoc-members:
    :show-inheritance: