92 lines
3.0 KiB
Python
92 lines
3.0 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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from util import FatalError
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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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DR_REG_LP_WDT_BASE = 0x600B1C00
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RTC_CNTL_WDTCONFIG0_REG = DR_REG_LP_WDT_BASE + 0x0 # LP_WDT_RWDT_CONFIG0_REG
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RTC_CNTL_WDTWPROTECT_REG = DR_REG_LP_WDT_BASE + 0x001C # LP_WDT_RWDT_WPROTECT_REG
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RTC_CNTL_SWD_CONF_REG = DR_REG_LP_WDT_BASE + 0x0020 # LP_WDT_SWD_CONFIG_REG
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RTC_CNTL_SWD_AUTO_FEED_EN = 1 << 18
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RTC_CNTL_SWD_WPROTECT_REG = DR_REG_LP_WDT_BASE + 0x0024 # LP_WDT_SWD_WPROTECT_REG
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RTC_CNTL_SWD_WKEY = 0x50D83AA1 # LP_WDT_SWD_WKEY, same as WDT key in this case
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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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UF2_FAMILY_ID = 0x332726F6
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def get_pkg_version(self):
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num_word = 4
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return (self.read_reg(self.EFUSE_BLOCK1_ADDR + (4 * num_word)) >> 0) & 0x07
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def get_minor_chip_version(self):
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num_word = 3
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return (self.read_reg(self.EFUSE_BLOCK1_ADDR + (4 * num_word)) >> 18) & 0x07
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def get_major_chip_version(self):
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num_word = 3
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return (self.read_reg(self.EFUSE_BLOCK1_ADDR + (4 * num_word)) >> 21) & 0x03
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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", "IEEE802.15.4"]
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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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def check_spi_connection(self, spi_connection):
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if not set(spi_connection).issubset(set(range(0, 28))):
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raise FatalError("SPI Pin numbers must be in the range 0-27.")
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if any([v for v in spi_connection if v in [26, 27]]):
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print(
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"WARNING: GPIO pins 26 and 27 are used by USB-Serial/JTAG, "
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"consider using other pins for SPI flash connection."
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)
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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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