NOISSUE-Add WiFi to Beagleboard via Esp32

esp_hosted_ng/host/platforms/beaglev-fire/README.md

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+# BeagleV-Fire Platform Support
+
+ESP-Hosted support for BeagleV-Fire (Microchip PolarFire SoC RISC-V platform).
+
+## Hardware
+
+- **Board**: BeagleV-Fire
+- **SoC**: Microchip PolarFire SoC (RISC-V)
+- **Interface**: SPI0
+- **ESP32**: Any ESP32 module (ESP32-WROOM-32, DevKitC, etc.)
+
+## Pin Connections
+
+| Function       | ESP32 GPIO | ESP32 Physical Pin | BeagleV-Fire Pin | BeagleV GPIO | Description     |
+| -------------- | ---------- | ------------------ | ---------------- | ------------ | --------------- |
+| **SPI MOSI**   | GPIO 13    | D13                | P9_18            | SPI0_MOSI    | SPI Master Out  |
+| **SPI MISO**   | GPIO 12    | D12                | P9_21            | SPI0_MISO    | SPI Master In   |
+| **SPI CLK**    | GPIO 14    | D14                | P9_22            | SPI0_CLK     | SPI Clock       |
+| **SPI CS**     | GPIO 15    | D15                | P9_17            | SPI0_CS0     | SPI Chip Select |
+| **Handshake**  | GPIO 26    | D26                | P8_03            | 512          | MSS GPIO_2[0]   |
+| **Data Ready** | GPIO 25    | D25                | P8_04            | 513          | MSS GPIO_2[1]   |
+| **Reset**      | EN         | EN                 | P8_05            | 514          | MSS GPIO_2[2]   |
+| **Ground**     | GND        | GND                | P9_1 or P9_2     | GND          | Common Ground   |
+
+## Configuration Details
+
+### Hardware Configuration
+
+- **SPI Interface**: SPI0 on BeagleV-Fire
+- **GPIO Chip**: MSS GPIO_2 (base 512)
+- **Reset Pin**: GPIO 514 (configured in `beaglev_init.sh`)
+- **Handshake Pin**: GPIO 512 (configured in `spi/esp_spi.h`)
+- **Data Ready Pin**: GPIO 513 (configured in `spi/esp_spi.h`)
+
+## Files in This Directory
+
+- **beaglev_init.sh** - Modified initialization script for BeagleV-Fire
+- **beaglev-esp-hosted.dts** - Device tree overlay for SPI configuration
+- **patches/esp_spi.h.patch** - GPIO pin modifications
+
+## Quick Setup
+
+### 1. Apply Device Tree Overlay
+
+```bash
+# Compile overlay
+dtc -O dtb -o beaglev-esp-hosted.dtbo -b 0 -@ beaglev-esp-hosted.dts
+
+# Copy to firmware directory
+sudo cp beaglev-esp-hosted.dtbo /lib/firmware/
+
+# Apply overlay
+sudo mkdir -p /sys/kernel/config/device-tree/overlays/esp-hosted
+echo beaglev-esp-hosted.dtbo | sudo tee /sys/kernel/config/device-tree/overlays/esp-hosted/path
+
+# Verify
+cat /sys/kernel/config/device-tree/overlays/esp-hosted/status  # Should show "applied"
+ls /dev/spidev0.0  # Should exist
+```
+
+### 2. Apply GPIO Pin Patch
+
+If not already applied in your fork:
+
+```bash
+cd ~/esp-hosted
+patch -p1 < esp_hosted_ng/host/platforms/beaglev-fire/patches/esp_spi.h.patch
+```
+
+Or manually edit `esp_hosted_ng/host/linux/host_driver/esp32/spi/esp_spi.h`:
+
+```c
+#define HANDSHAKE_PIN 513        // Changed from 22
+#define SPI_DATA_READY_PIN 514   // Changed from 27
+```
+
+### 3. Copy Init Script
+
+```bash
+cp esp_hosted_ng/host/platforms/beaglev-fire/beaglev_init.sh \
+   esp_hosted_ng/host/beaglev_init.sh
+chmod +x esp_hosted_ng/host/beaglev_init.sh
+```
+
+### 4. Build and Load Driver
+
+```bash
+cd esp_hosted_ng/host
+sudo ./beaglev_init.sh spi
+```
+
+### 5. Verify
+
+```bash
+# Check module loaded
+lsmod | grep esp32_spi
+
+# Check interface
+ip link show wlan0
+
+# Test WiFi
+sudo iw dev wlan0 scan
+```
+
+## Troubleshooting
+
+**No /dev/spidev0.0**:
+
+```bash
+# Load SPI modules
+sudo modprobe spidev
+sudo modprobe spi-microchip-core
+sudo modprobe spi-microchip-core-qspi
+
+# Reboot if needed
+sudo reboot
+```
+
+**Module won't load**:
+
+```bash
+# Check kernel headers
+ls /lib/modules/$(uname -r)/build/include/linux/module.h
+
+# If missing, rebuild kernel headers
+```
+
+**No wlan0 interface**:
+
+```bash
+# Check ESP32 is powered and connected
+# Check kernel logs
+dmesg | grep -i esp
+
+# Look for "ESP peripheral capabilities"
+```
+
+## Notes
+
+- Bluetooth requires `bluetooth` kernel module (not in default BeagleV kernel)
+- WiFi works independently of Bluetooth
+- SPI speed can be increased to 20 MHz for better performance (experimental)

esp_hosted_ng/host/platforms/beaglev-fire/beaglev-esp-hosted.dts

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+/dts-v1/;
+/plugin/;
+
+/* ESP32 WiFi on SPI0 - BeagleV-Fire */
+
+/ {
+    compatible = "microchip,mpfs-beaglev-fire";
+};
+
+&{/soc/spi@20108000} {
+    status = "okay";
+
+    esp32@0 {
+        compatible = "espressif,esp32";
+        reg = <0>;
+        spi-max-frequency = <10000000>;
+        spi-cpha;
+        spi-cpol;
+
+        /* GPIO_2 control pins */
+        reset-gpios = <0x13 0x02 0x01>;      /* P8_05 */
+        handshake-gpios = <0x13 0x00 0x00>;  /* P8_03 */
+        interrupt-parent = <0x13>;
+        interrupts = <0x01 0x02>;             /* P8_04 */
+    };
+};

esp_hosted_ng/host/platforms/beaglev-fire/beaglev_init.sh

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+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2015-2021 Espressif Systems (Shanghai) PTE LTD
+#
+# This is modified version of rpi_init.sh for BeagleV-Fire (RISC-V)
+#
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# Platform-specific settings for BeagleV-Fire
+resetpin=512                # BeagleV GPIO for ESP32 reset (was 6 for RPi)
+
+# WLAN/BT initialization
+wlan_init() {
+    echo "WLAN init"
+
+    cd "$SCRIPT_DIR" || exit 1
+
+    # Build for RISC-V architecture (not ARM)
+    make target=$IF_TYPE \
+    ARCH=riscv \
+    KERNEL=/lib/modules/$(uname -r)/build
+
+    if [ $? -ne 0 ]; then
+        echo "Failed to build driver"
+        exit 1
+    fi
+
+    # Insert module
+    sudo insmod esp32_spi.ko
+
+    if [ $? -ne 0 ]; then
+        echo "Failed to insert module"
+        exit 1
+    fi
+
+    sleep 2
+    echo "esp32_spi module loaded"
+}
+
+bt_init() {
+    echo "Bluetooth init"
+
+    # Note: raspi-gpio commands removed (BeagleV doesn't have this utility)
+    # GPIO configuration is handled by device tree
+
+    echo "Bluetooth initialization skipped (requires kernel support)"
+}
+
+# Main execution
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <spi|sdio>"
+    exit 1
+fi
+
+IF_TYPE=$1
+
+if [ "$IF_TYPE" != "spi" ] && [ "$IF_TYPE" != "sdio" ]; then
+    echo "Error: Interface type must be 'spi' or 'sdio'"
+    exit 1
+fi
+
+echo "Interface type: $IF_TYPE"
+
+# Note: spidev_disabler not needed on BeagleV-Fire
+# SPI device configuration is handled by custom device tree overlay
+
+# Reset ESP32
+if [ -d /sys/class/gpio/gpio$resetpin ]; then
+    echo "GPIO $resetpin already exported"
+else
+    echo $resetpin > /sys/class/gpio/export
+fi
+
+echo out > /sys/class/gpio/gpio$resetpin/direction
+echo "Resetting ESP32 using GPIO $resetpin"
+echo 0 > /sys/class/gpio/gpio$resetpin/value
+sleep 1
+echo 1 > /sys/class/gpio/gpio$resetpin/value
+sleep 2
+
+# Load kernel modules
+if [ $(lsmod | grep bluetooth | wc -l) = "0" ]; then
+    echo "Attempting to load bluetooth module..."
+    sudo modprobe bluetooth 2>/dev/null || echo "Bluetooth not available, skipping"
+fi
+
+if [ $(lsmod | grep cfg80211 | wc -l) = "0" ]; then
+    echo "Attempting to load cfg80211 module..."
+    sudo modprobe cfg80211 2>/dev/null || echo "cfg80211 not available, will try to build anyway"
+fi
+
+# Initialize WLAN (always attempt, even if bluetooth failed)
+wlan_init
+
+echo "Setup complete!"
+echo "Check dmesg for ESP32 initialization messages:"
+echo "  dmesg | grep -i esp"
+echo ""
+echo "If successful, wlan0 interface should be available:"
+echo "  ip link show wlan0"

esp_hosted_ng/host/platforms/beaglev-fire/patches/esp_spi.h.patch

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+diff --git a/esp_hosted_ng/host/linux/host_driver/esp32/spi/esp_spi.h b/esp_hosted_ng/host/linux/host_driver/esp32/spi/esp_spi.h
+index abcdef1..1234567 100644
+--- a/esp_hosted_ng/host/linux/host_driver/esp32/spi/esp_spi.h
++++ b/esp_hosted_ng/host/linux/host_driver/esp32/spi/esp_spi.h
+@@ -17,11 +17,11 @@
+ #include "esp_api.h"
+
+ #ifndef HANDSHAKE_PIN
+-#define HANDSHAKE_PIN 22
++#define HANDSHAKE_PIN 513
+ #endif
+
+ #ifndef SPI_DATA_READY_PIN
+-#define SPI_DATA_READY_PIN 27
++#define SPI_DATA_READY_PIN 514
+ #endif
+
+ #ifndef RESETPIN

s1-wifi-setup/README.md

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+# s1 Board WiFi Setup
+
+Automated WiFi setup for s1 board (BeagleV-Fire + ESP32).
+
+## Quick Start
+
+```bash
+# On s1 board
+sudo ./setup-s1.sh
+
+# On dev machine (for ESP32)
+cd esp-firmware
+./flash-esp32.sh /dev/ttyUSB0
+```
+
+## What's Included
+
+- **setup-s1.sh** - Complete automated setup for s1
+- **kernel/build-kernel-modules.sh** - Kernel headers and build environment
+- **esp-firmware/flash-esp32.sh** - ESP32 firmware flashing automation
+- **overlays/beaglev-esp-hosted.dts** - Device tree overlay for SPI
+- **scripts/setup-device-tree.sh** - DT compilation and application
+- **scripts/verify-setup.sh** - Verify everything works
+
+## Hardware Connections (s1 Board)
+
+| ESP32 Pin | s1 Board Pin | Function  |
+| --------- | ------------ | --------- |
+| GPIO13    | SPI0_MOSI    | MOSI      |
+| GPIO12    | SPI0_MISO    | MISO      |
+| GPIO14    | SPI0_CLK     | Clock     |
+| GPIO15    | SPI0_CS0     | CS        |
+| GPIO2     | GPIO 513     | Handshake |
+| GPIO4     | GPIO 514     | Data Rdy  |
+| EN        | GPIO 512     | Reset     |
+| GND       | GND          | Ground    |
+
+## Key Changes from Upstream esp-hosted
+
+### For BeagleV-Fire (RISC-V)
+
+1. **Architecture**: `ARCH=arm` → `ARCH=riscv`
+2. **GPIO pins**: Updated in `esp_spi.h`
+   - `HANDSHAKE_PIN` → 513
+   - `SPI_DATA_READY_PIN` → 514
+3. **Reset pin**: `resetpin=6` → `resetpin=512` in init script
+4. **Removed**: ARM-specific raspi-gpio commands
+5. **Added**: Device tree overlay for Microchip PolarFire SoC
+
+### Files Modified in esp-hosted Fork
+
+```bash
+esp_hosted_ng/host/
+├── beaglev_init.sh              # Created from rpi_init.sh
+└── linux/host_driver/esp32/spi/
+    └── esp_spi.h                # GPIO pins changed to 513, 514
+```
+
+## Usage
+
+```bash
+# After setup, connect to WiFi:
+sudo ip link set wlan0 up
+sudo iw dev wlan0 scan
+wpa_passphrase "SSID" "password" | sudo tee /etc/wpa_supplicant.conf
+sudo wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
+sudo dhclient wlan0
+```
+
+## Troubleshooting
+
+```bash
+# Check status
+./scripts/verify-setup.sh
+
+# View logs
+dmesg | grep -i esp
+
+# Check SPI
+ls /dev/spidev0.0
+
+# Check interface
+ip link show wlan0
+```