release: v2.9.6-pre

.github/workflows/build.yml

@@ -31,3 +31,11 @@ jobs:
         run: pip install platformio
       - name: Build ${{ matrix.env }}
         run: pio run -e ${{ matrix.env }}
+      - name: Upload test build
+        if: github.event_name == 'pull_request'
+        uses: actions/upload-artifact@v4
+        with:
+          name: testbuild-${{ matrix.env }}
+          path: firmware/**/*_factory.bin
+          if-no-files-found: warn
+          retention-days: 14

.github/workflows/release.yml

@@ -0,0 +1,70 @@
+name: release
+
+on:
+  push:
+    tags: ['v*']
+
+permissions:
+  contents: write
+
+jobs:
+  build-release:
+    name: build ${{ matrix.env }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        # Every shipped target. post_build_merge.py writes
+        # firmware/<git-describe>/<friendly>_factory.bin and _firmware.bin.
+        env: [esp32-2432s028, esp32-2432s028-st7789, esp32-2432s028-2usb,
+              esp32-s3-2432s028, esp32-s3-devkit, esp32-s3-mini,
+              lilygo-t-display-s3, lilygo-t-display-v1,
+              esp32-headless, esp32-headless-led,
+              esp32-c3-supermini, esp32-c3-oled,
+              esp32-s3-oled, wemos-lolin32-oled, esp32-devkit-oled,
+              wireless-paper, wireless-paper-headless]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # git describe drives the firmware/<version>/ output dir
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+          cache: pip
+      - name: Cache PlatformIO
+        uses: actions/cache@v4
+        with:
+          path: ~/.platformio
+          key: pio-${{ runner.os }}-${{ hashFiles('platformio.ini') }}
+          restore-keys: pio-${{ runner.os }}-
+      - name: Install PlatformIO
+        run: pip install platformio
+      - name: Build ${{ matrix.env }}
+        run: pio run -e ${{ matrix.env }}
+      - name: Upload binaries
+        uses: actions/upload-artifact@v4
+        with:
+          name: firmware-${{ matrix.env }}
+          path: firmware/**/*.bin
+          if-no-files-found: error
+
+  release:
+    needs: build-release
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+          merge-multiple: true
+      - name: Create release with binaries
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          shopt -s globstar
+          gh release create "${GITHUB_REF_NAME}" \
+            --title "${GITHUB_REF_NAME}" \
+            --prerelease \
+            --generate-notes \
+            artifacts/**/*.bin

CHANGELOG.md

@@ -2,6 +2,22 @@
 
 All notable changes to SparkMiner will be documented in this file.
 
+## [v2.9.6-pre] - 2026-09-19
+
+### Fixed
+- **ESP32-S3 zero-shares bug** (#36, issues #28/#10/#5): core 1 now mines the first SHA in software (same proven path as core 0) instead of the broken hardware midstate restore. Root cause: the S3 SHA_H digest-state registers expect big-endian state words (espressif/esp-idf#12440) and the old code seeded little-endian — reported hashrate was real hash speed but no share ever validated. S3 now shows an honest ~50-55 KH/s with shares landing at the pool; a faster correct HW path is tracked in #28.
+- **WiFi reconnect after AP reboot / AUTH_EXPIRE** (#37, issues #31/#29): the watchdog re-issues `WiFi.begin()` with the NVS-stored credentials instead of `WiFi.reconnect()`. README note for the macOS captive-portal probe.
+- **Config portal: SSIDs with spaces** (#45): scan-list autofill read the HTML-escaped visible text (spaces became U+00A0); now reads `data-ssid`.
+- **Block-height and fee stats silently dead** (#44): mempool.space 301-redirects its HTTP endpoints to HTTPS and HTTPClient does not follow redirects; endpoints now use HTTPS via the existing TLS paths.
+
+### Added
+- **ESP32-C3/S2 hardware SHA mining path** (#39, issue #34): legitimate START→CONTINUE full double-hash with no midstate injection, software-verify gate on every submission, and a one-shot boot self-test that falls back to the software miner if the register sequence disagrees with the chip.
+- **`esp32-devkit-oled` board target** (#38, issue #26): generic ESP32 DevKit + SSD1306 128x64 OLED on SDA=21/SCL=22. Both OLED envs added to the CI matrix.
+- **CI artifact upload** — every PR now publishes test-build factory binaries; tags build all targets and publish a GitHub Release automatically.
+
+### Changed
+- README hashrate tables now report honest, pool-verified numbers.
+
 ## [v2.9.3] - 2026-01-22
 
 ### Added

README.md

@@ -1,4 +1,4 @@
-# SparkMiner v2.9.5
+# SparkMiner v2.9.6-pre
 
 **High-performance Bitcoin solo miner for ESP32, ESP32-S3 & ESP32-C3**
 
@@ -167,8 +167,8 @@ Find your board below and download the matching firmware from [Releases](https:/
 | Chip | Hashrate | Notes |
 |------|----------|-------|
 | **ESP32** (dual-core) | ~715 KH/s | Best performance, hardware SHA-256 |
-| **ESP32-S3** (dual-core) | ~280-400 KH/s | Software SHA-256, more RAM |
-| **ESP32-C3** (single-core) | ~200-300 KH/s | RISC-V, lowest power |
+| **ESP32-S3** (dual-core) | ~50-55 KH/s | Every share software-verified (#36); faster HW path (~300+ KH/s) in progress — see [#28](https://github.com/SneezeGUI/SparkMiner/issues/28) |
+| **ESP32-C3** (single-core) | TBD | HW SHA now wired with boot self-test (#39); software fallback ~1 KH/s. Numbers pending real-C3 validation ([#34](https://github.com/SneezeGUI/SparkMiner/issues/34)) |
 
 ### Board Compatibility Status
 
@@ -501,7 +501,7 @@ The display features color-coded indicators for quick health monitoring:
 | Board | Device Display | Pool Reported | Power | Notes |
 |-------|---------------|---------------|-------|-------|
 | **ESP32-2432S028 (CYD)** | ~715-725 KH/s | ~715-725 KH/s | ~0.5W | Pipelined assembly v2 |
-| **ESP32-S3 (Freenove)** | ~280 KH/s | ~400 KH/s | ~0.4W | Midstate caching v3 |
+| **ESP32-S3 (Freenove)** | ~50-55 KH/s | ~50-55 KH/s | ~0.4W | Software-first SHA (#36); the old ~280-400 KH/s figures were invalid (zero shares accepted) |
 | **ESP32 Headless** | ~750 KH/s | ~750 KH/s | ~0.3W | No display overhead |
 
 > **Note:** Pool-reported hashrate is typically higher than device display due to share submission timing and pool difficulty adjustments.

platformio.ini

@@ -41,7 +41,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D ESP32_2432S028=1
     ; Hardware SHA-256 via direct register access to SHA peripheral
     -D HARDWARE_SHA256=1
@@ -168,7 +168,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D ESP32_2432S028=1
     ; Hardware SHA-256 via direct register access to SHA peripheral
     -D HARDWARE_SHA256=1
@@ -301,7 +301,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D LILYGO_T_DISPLAY_S3=1
     -D USE_HARDWARE_SHA=1
     -D BOARD_HAS_PSRAM
@@ -371,7 +371,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D LILYGO_T_DISPLAY_V1=1
     -D USE_HARDWARE_SHA=1
     -D USE_DISPLAY=1
@@ -496,7 +496,7 @@ upload_speed = 115200
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D ESP32_S3_MINI=1
     -D USE_HARDWARE_SHA=1
     -D BOARD_HAS_PSRAM
@@ -536,7 +536,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D ESP32_HEADLESS_LED=1
     -D USE_HARDWARE_SHA=1
     -D USE_DISPLAY=0
@@ -575,7 +575,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D ESP32_C3_SUPERMINI=1
     ; Hardware SHA-256 via direct register access (full double-hash, no midstate
     ; restore -- midstate restore is unsupported on ESP32-C3). See issue #34.
@@ -610,7 +610,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D ESP32_C3_OLED=1
     ; Hardware SHA-256 via direct register access (full double-hash, no midstate
     ; restore -- midstate restore is unsupported on ESP32-C3). See issue #34.
@@ -652,7 +652,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D ESP32_S3_OLED=1
     -D USE_HARDWARE_SHA=1
     -D BOARD_HAS_PSRAM
@@ -699,7 +699,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     ; ---- Board identity ----
     -D WEMOS_LOLIN32_OLED=1
     ; ---- SHA implementation ----
@@ -747,7 +747,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D ESP32_HEADLESS=1
     -D USE_HARDWARE_SHA=1
     -D BUTTON_PIN=0
@@ -778,7 +778,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D USE_DISPLAY=0
     -D USE_EINK_DISPLAY=1
     -D USE_HARDWARE_SHA=1
@@ -810,7 +810,7 @@ upload_speed = 921600
 build_unflags = -Os
 
 build_flags =
-    -D AUTO_VERSION=\"v2.9.5\"
+    -D AUTO_VERSION=\"v2.9.6-pre\"
     -D ESP32_DEVKIT_OLED=1
     ; Cosmetic on classic ESP32 (ASM SHA auto-selected via CONFIG_IDF_TARGET_ESP32)
     -D USE_HARDWARE_SHA=1