66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
# SPDX-FileCopyrightText: 2022 Fredrik Ahlberg, Angus Gratton,
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# Espressif Systems (Shanghai) CO LTD, other contributors as noted.
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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from .esp32c6 import ESP32C6ROM
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class ESP32H2ROM(ESP32C6ROM):
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CHIP_NAME = "ESP32-H2"
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IMAGE_CHIP_ID = 16
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# Magic value for ESP32H2
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CHIP_DETECT_MAGIC_VALUE = [0xD7B73E80]
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FLASH_FREQUENCY = {
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"48m": 0xF,
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"24m": 0x0,
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"16m": 0x1,
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"12m": 0x2,
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}
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def get_pkg_version(self):
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num_word = 3
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block1_addr = self.EFUSE_BASE + 0x044
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word3 = self.read_reg(block1_addr + (4 * num_word))
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pkg_version = (word3 >> 21) & 0x0F
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return pkg_version
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def get_chip_description(self):
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chip_name = {
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0: "ESP32-H2",
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}.get(self.get_pkg_version(), "unknown ESP32-H2")
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major_rev = self.get_major_chip_version()
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minor_rev = self.get_minor_chip_version()
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return f"{chip_name} (revision v{major_rev}.{minor_rev})"
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def get_chip_features(self):
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return ["BLE"]
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def get_crystal_freq(self):
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# ESP32H2 XTAL is fixed to 32MHz
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return 32
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class ESP32H2StubLoader(ESP32H2ROM):
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"""Access class for ESP32H2 stub loader, runs on top of ROM.
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(Basically the same as ESP32StubLoader, but different base class.
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Can possibly be made into a mixin.)
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"""
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FLASH_WRITE_SIZE = 0x4000 # matches MAX_WRITE_BLOCK in stub_loader.c
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STATUS_BYTES_LENGTH = 2 # same as ESP8266, different to ESP32 ROM
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IS_STUB = True
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def __init__(self, rom_loader):
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self.secure_download_mode = rom_loader.secure_download_mode
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self._port = rom_loader._port
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self._trace_enabled = rom_loader._trace_enabled
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self.cache = rom_loader.cache
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self.flush_input() # resets _slip_reader
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ESP32H2ROM.STUB_CLASS = ESP32H2StubLoader
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