esp32/boards: Add Silicognition ManT1S board definition.HEADorigin/masterorigin/HEADmaster

New board planned to be launched on Crowd Supply in late 2025.  ESP32-based
core module with IEEE 802.3cg 10BASE-T1S Single Pair Ethernet networking
and power distribution over data lines.

Signed-off-by: Patrick Van Oosterwijck <patrick@silicognition.com>

8 files changed, 190 insertions, 0 deletions

diff --git a/ports/esp32/boards/SIL_MANT1S/board.json b/ports/esp32/boards/SIL_MANT1S/board.json
new file mode 100644
index 000000000..06fd7f38b
--- /dev/null
+++ b/ports/esp32/boards/SIL_MANT1S/board.json
@@ -0,0 +1,27 @@
+{
+    "deploy": [
+        "../deploy.md"
+    ],
+    "deploy_options": {
+        "flash_offset": "0x1000"
+    },
+    "docs": "",
+    "features": [
+        "BLE",
+        "External Flash",
+        "External RAM",
+        "WiFi"
+    ],
+    "features_non_filterable": [
+        "T1S",
+        "10BASE-T1S"
+    ],
+    "images": [
+        "mant1s-board-top.jpg"
+    ],
+    "mcu": "esp32",
+    "product": "ManT1S",
+    "thumbnail": "",
+    "url": "https://mant1s.net/",
+    "vendor": "Silicognition LLC"
+}
diff --git a/ports/esp32/boards/SIL_MANT1S/manifest.py b/ports/esp32/boards/SIL_MANT1S/manifest.py
new file mode 100644
index 000000000..7ae2ed15d
--- /dev/null
+++ b/ports/esp32/boards/SIL_MANT1S/manifest.py
@@ -0,0 +1,2 @@
+include("$(PORT_DIR)/boards/manifest.py")
+freeze("modules")
diff --git a/ports/esp32/boards/SIL_MANT1S/modules/ping.py b/ports/esp32/boards/SIL_MANT1S/modules/ping.py
new file mode 100644
index 000000000..ec202f6f9
--- /dev/null
+++ b/ports/esp32/boards/SIL_MANT1S/modules/ping.py
@@ -0,0 +1,114 @@
+# µPing (MicroPing) for MicroPython
+# copyright (c) 2018 Shawwwn <shawwwn1@gmail.com>
+# License: MIT
+
+# Internet Checksum Algorithm
+# Author: Olav Morken
+# https://github.com/olavmrk/python-ping/blob/master/ping.py
+# Adjusted for ruff formatting to include in ManT1S MicroPython
+
+import utime
+import uselect
+import uctypes
+import usocket
+import ustruct
+import urandom
+
+
+# @data: bytes
+def checksum(data):
+    if len(data) & 0x1:  # Odd number of bytes
+        data += b"\0"
+    cs = 0
+    for pos in range(0, len(data), 2):
+        b1 = data[pos]
+        b2 = data[pos + 1]
+        cs += (b1 << 8) + b2
+    while cs >= 0x10000:
+        cs = (cs & 0xFFFF) + (cs >> 16)
+    cs = ~cs & 0xFFFF
+    return cs
+
+
+def ping(host, count=4, timeout=5000, interval=10, quiet=False, size=64):
+    # prepare packet
+    assert size >= 16, "pkt size too small"
+    pkt = b"Q" * size
+    pkt_desc = {
+        "type": uctypes.UINT8 | 0,
+        "code": uctypes.UINT8 | 1,
+        "checksum": uctypes.UINT16 | 2,
+        "id": uctypes.UINT16 | 4,
+        "seq": uctypes.INT16 | 6,
+        "timestamp": uctypes.UINT64 | 8,
+    }  # packet header descriptor
+    h = uctypes.struct(uctypes.addressof(pkt), pkt_desc, uctypes.BIG_ENDIAN)
+    h.type = 8  # ICMP_ECHO_REQUEST
+    h.code = 0
+    h.checksum = 0
+    h.id = urandom.getrandbits(16)
+    h.seq = 1
+
+    # init socket
+    sock = usocket.socket(usocket.AF_INET, usocket.SOCK_RAW, 1)
+    sock.setblocking(0)
+    sock.settimeout(timeout / 1000)
+    addr = usocket.getaddrinfo(host, 1)[0][-1][0]  # ip address
+    sock.connect((addr, 1))
+    not quiet and print("PING %s (%s): %u data bytes" % (host, addr, len(pkt)))
+
+    seqs = list(range(1, count + 1))  # [1,2,...,count]
+    c = 1
+    t = 0
+    n_trans = 0
+    n_recv = 0
+    finish = False
+    while t < timeout:
+        if t == interval and c <= count:
+            # send packet
+            h.checksum = 0
+            h.seq = c
+            h.timestamp = utime.ticks_us()
+            h.checksum = checksum(pkt)
+            if sock.send(pkt) == size:
+                n_trans += 1
+                t = 0  # reset timeout
+            else:
+                seqs.remove(c)
+            c += 1
+
+        # recv packet
+        while 1:
+            socks, _, _ = uselect.select([sock], [], [], 0)
+            if socks:
+                resp = socks[0].recv(4096)
+                resp_mv = memoryview(resp)
+                h2 = uctypes.struct(uctypes.addressof(resp_mv[20:]), pkt_desc, uctypes.BIG_ENDIAN)
+                # TODO: validate checksum (optional)
+                seq = h2.seq
+                if h2.type == 0 and h2.id == h.id and (seq in seqs):  # 0: ICMP_ECHO_REPLY
+                    t_elasped = (utime.ticks_us() - h2.timestamp) / 1000
+                    ttl = ustruct.unpack("!B", resp_mv[8:9])[0]  # time-to-live
+                    n_recv += 1
+                    not quiet and print(
+                        "%u bytes from %s: icmp_seq=%u, ttl=%u, time=%f ms"
+                        % (len(resp), addr, seq, ttl, t_elasped)
+                    )
+                    seqs.remove(seq)
+                    if len(seqs) == 0:
+                        finish = True
+                        break
+            else:
+                break
+
+        if finish:
+            break
+
+        utime.sleep_ms(1)
+        t += 1
+
+    # close
+    sock.close()
+    ret = (n_trans, n_recv)
+    not quiet and print("%u packets transmitted, %u packets received" % ret)
+    return ret
diff --git a/ports/esp32/boards/SIL_MANT1S/mpconfigboard.cmake b/ports/esp32/boards/SIL_MANT1S/mpconfigboard.cmake
new file mode 100644
index 000000000..3d17a2896
--- /dev/null
+++ b/ports/esp32/boards/SIL_MANT1S/mpconfigboard.cmake
@@ -0,0 +1,9 @@
+set(SDKCONFIG_DEFAULTS
+    boards/sdkconfig.base
+    boards/sdkconfig.spiram
+    boards/sdkconfig.ble
+    boards/sdkconfig.240mhz
+    boards/SIL_MANT1S/sdkconfig.board
+)
+
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
diff --git a/ports/esp32/boards/SIL_MANT1S/mpconfigboard.h b/ports/esp32/boards/SIL_MANT1S/mpconfigboard.h
new file mode 100644
index 000000000..342636c8a
--- /dev/null
+++ b/ports/esp32/boards/SIL_MANT1S/mpconfigboard.h
@@ -0,0 +1,6 @@
+#define MICROPY_HW_BOARD_NAME "Silicognition ManT1S"
+#define MICROPY_HW_MCU_NAME "ESP32-PICO-V3-02"
+#define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT "mant1s"
+
+#define MICROPY_HW_I2C0_SCL                 (32)
+#define MICROPY_HW_I2C0_SDA                 (33)
diff --git a/ports/esp32/boards/SIL_MANT1S/partitions-8MiB-ota.csv b/ports/esp32/boards/SIL_MANT1S/partitions-8MiB-ota.csv
new file mode 100644
index 000000000..6229f4f75
--- /dev/null
+++ b/ports/esp32/boards/SIL_MANT1S/partitions-8MiB-ota.csv
@@ -0,0 +1,9 @@
+# Partition table for MicroPython with OTA support using 8MB flash
+# Notes: the offset of the partition table itself is set in
+# $IDF_PATH/components/partition_table/Kconfig.projbuild.
+# Name,   Type, SubType, Offset,   Size,     Flags
+nvs,      data, nvs,     0x9000,   0x4000,
+otadata,  data, ota,     0xd000,   0x2000,
+phy_init, data, phy,     0xf000,   0x1000,
+ota_0,    app,  ota_0,   0x10000,  0x200000,
+ota_1,    app,  ota_1,   0x210000, 0x200000,
diff --git a/ports/esp32/boards/SIL_MANT1S/pins.csv b/ports/esp32/boards/SIL_MANT1S/pins.csv
new file mode 100644
index 000000000..a3f037781
--- /dev/null
+++ b/ports/esp32/boards/SIL_MANT1S/pins.csv
@@ -0,0 +1,3 @@
+I2C_SCL,GPIO32
+I2C_SDA,GPIO33
+
diff --git a/ports/esp32/boards/SIL_MANT1S/sdkconfig.board b/ports/esp32/boards/SIL_MANT1S/sdkconfig.board
new file mode 100644
index 000000000..53a605e2c
--- /dev/null
+++ b/ports/esp32/boards/SIL_MANT1S/sdkconfig.board
@@ -0,0 +1,20 @@
+# 8 MB flash
+
+CONFIG_ESPTOOLPY_FLASHSIZE_4MB=
+CONFIG_ESPTOOLPY_FLASHSIZE_8MB=y
+CONFIG_ESPTOOLPY_FLASHSIZE_16MB=
+CONFIG_ESPTOOLPY_FLASHSIZE="8MB"
+
+# Fast flash
+
+CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
+CONFIG_ESPTOOLPY_FLASHFREQ_80M=y
+
+# Partition table
+
+CONFIG_PARTITION_TABLE_CUSTOM=y
+CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="boards/SIL_MANT1S/partitions-8MiB-ota.csv"
+
+# Network name
+
+CONFIG_LWIP_LOCAL_HOSTNAME="ManT1S"