Merge pull request 'feat(webui): motor current live graph (#297)' (#306) from sl-webui/issue-297-motor-graph into main

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sl-jetson 2026-03-02 21:35:56 -05:00
commit 4c751e576b
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// =============================================================================
// SaltyBot RPLIDAR A1 Dust & Splash Cover
// Agent: sl-mechanical | 2026-03-02
//
// CLIP-ON protective dome for RPLIDAR A1M8 sensor, shielding from dust,
// rain, and debris while maintaining 360° scan window. Quick-release tab
// for one-handed removal. Integrated drainage holes prevent water pooling.
//
// HOW IT WORKS
// 1. Clip ring sits on the mounting boss of the RPLIDAR A1 body (Ø 70 mm).
// 2. Two snap tabs (elastically deformed) lock into recesses on the sensor rim.
// 3. Dome overhead shields the rotating scanning mirror from debris.
// 4. Six radial drainage holes (Ø 4 mm) at base allow water to escape.
// 5. Quick-release tab provides easy lever-point for removal (no tools).
//
// OPTICAL DESIGN
// 360° scan window: unobstructed to ±60° vertical (sensor FOV).
// Window height: 28 mm (clear zone from 21 mm to 49 mm from base).
// Sensor face clearance: 6 mm minimum (prevents optical interference).
// Dome apex: ~55 mm above base (shed water away from sensor).
//
// MATERIALS & ASSEMBLY
// Body: PETG or ASA (UV-resistant, weatherproof, flexible enough for snaps).
// Snap tabs: Designed for 23 mm deflection during insertion.
// Drainage: Six 4 mm holes ensure rapid water egress (gutters not needed).
// Installation: No tools; press upward until snap tabs engage (~3 second clip time).
// Removal: Push quick-release tab inward, twist gently, lift off.
//
// MOUNTING GEOMETRY
// RPLIDAR body outer diameter: 70.0 mm (Ø RPL_BODY_D)
// Mounting bolt circle: 58.0 mm (4× M3 at 45°/135°/225°/315°)
// Scan window (annular): ±30 mm radius, height 2149 mm
// Bearing assembly: ~40 mm diameter (inside scan window)
//
// PARTS (set RENDER= to export each)
// dust_cover 3D print × 1 (RENDER="dust_cover")
// assembly Preview with RPLIDAR ghost (RENDER="assembly")
//
// PRINT & INSTALL
// Print orientation: Dome up (smooth finish down for adhesion).
// Print settings: PETG/ASA, 0.2 mm layers, 5 perimeters, 15% infill.
// No supports required (overhangs < 45°, snap tabs self-supporting).
// Installation: Clean sensor body with IPA; press cover downward until snap
// tabs audibly engage (23 mm deflection), test rotation lock.
// =============================================================================
$fn = 64;
e = 0.01;
// =============================================================================
// RPLIDAR A1 GEOMETRY
// =============================================================================
RPL_BODY_D = 70.0; // mm outer body diameter
RPL_BC = 58.0; // mm mounting bolt circle (4× M3)
RPL_TOP_FACE_Z = 50.5; // mm height of top of sensor body (measured)
// Window dimensions (where scan light exits/enters)
WINDOW_INNER_R = 15.0; // mm inner radius of scan annulus (bearing assy)
WINDOW_OUTER_R = 33.0; // mm outer radius of scan annulus
WINDOW_Z_BOT = 21.0; // mm bottom of optical scan window
WINDOW_Z_TOP = 49.0; // mm top of optical scan window (±60° FOV)
// Clip base sits on sensor body (radius where snap tabs will locate)
CLIP_SEAT_R = RPL_BODY_D / 2 + 0.5; // 35.5 mm (slight clearance)
// =============================================================================
// DUST COVER DESIGN PARAMETERS
// =============================================================================
// CLIP BASE RING (sits on RPLIDAR body)
CLIP_BASE_OD = 77.0; // mm outer diameter of base ring
CLIP_BASE_H = 6.0; // mm height of clip base (engagement zone)
CLIP_BASE_WALL = 3.0; // mm wall thickness
// SNAP TABS (two locations: top front / top back)
SNAP_TAB_W = 12.0; // mm width of each snap tab
SNAP_TAB_H = 8.0; // mm height (radial protrusion)
SNAP_TAB_T = 2.0; // mm thickness (allows flex)
SNAP_DEFLECT = 2.5; // mm expected deflection during clip
SNAP_ANGLE = 90.0; // degrees (top and bottom: 0° / 180°)
// QUICK-RELEASE TAB (lever point)
QR_TAB_W = 10.0; // mm width
QR_TAB_L = 14.0; // mm length (radial extent)
QR_TAB_H = 6.0; // mm height above base
QR_TAB_T = 2.0; // mm thickness
QR_ANGLE = 270.0; // degrees (right side)
// DOME STRUCTURE (overhead cover)
DOME_APEX_H = 55.0; // mm height to dome peak (above base plane)
DOME_OD = 75.0; // mm outer diameter of dome
DOME_WALL_T = 2.5; // mm wall thickness
// DRAINAGE HOLES (prevent water pooling)
DRAIN_HOLE_D = 4.0; // mm diameter of each drain hole
DRAIN_HOLE_Z = 4.0; // mm height of drain holes from base
DRAIN_COUNT = 6; // number of evenly-spaced holes around base
DRAIN_ANGLE_START = 0.0; // degrees
// SENSOR CLEARANCE
SENSOR_FACE_CLR = 6.0; // mm minimum clearance above top of sensor
WINDOW_CLR = 4.0; // mm clearance above window outer edge
// =============================================================================
// RENDER CONTROL
// =============================================================================
// "dust_cover" clip-on cover, ready to print
// "assembly" cover with RPLIDAR ghost for fit check
RENDER = "assembly";
// =============================================================================
// MAIN RENDER DISPATCH
// =============================================================================
if (RENDER == "dust_cover") {
dust_cover();
} else if (RENDER == "assembly") {
assembly();
}
// =============================================================================
// ASSEMBLY VIEW (for fit verification)
// =============================================================================
module assembly() {
// RPLIDAR A1 ghost (sensor body and scanning window)
%color("DarkGray", 0.30) {
// Main body cylinder
cylinder(d=RPL_BODY_D, h=RPL_TOP_FACE_Z);
// Scan window annulus (where light enters/exits)
translate([0, 0, WINDOW_Z_BOT])
difference() {
cylinder(r=WINDOW_OUTER_R, h=WINDOW_Z_TOP - WINDOW_Z_BOT);
translate([0, 0, -e]) cylinder(r=WINDOW_INNER_R, h=WINDOW_Z_TOP - WINDOW_Z_BOT + 2*e);
}
// Top dome (bearing assembly)
translate([0, 0, WINDOW_Z_TOP])
sphere(r=WINDOW_INNER_R);
}
// Dust cover (main part)
color("Orange", 0.88)
dust_cover();
// Labels
echo("Dust Cover assembled on RPLIDAR A1M8");
echo(str("Window clearance: ", WINDOW_CLR, " mm (minimum)"));
echo(str("Sensor face clearance: ", SENSOR_FACE_CLR, " mm"));
}
// =============================================================================
// DUST COVER MODULE (main part)
// =============================================================================
//
// Structure:
// Base ring: clip location, snap engagement points
// Dome: overhead cover to shield sensor
// Snap tabs: two flex arms for retention
// Quick-release tab: lever for disassembly
// Drainage holes: six ports at base perimeter
//
module dust_cover() {
difference() {
union() {
// BASE RING (sits on RPLIDAR body)
translate([0, 0, 0])
cylinder(d=CLIP_BASE_OD, h=CLIP_BASE_H);
// DOME COVER (overhead protection)
// Smooth dome surface, slightly flattened at apex for print stability
translate([0, 0, CLIP_BASE_H])
dome_surface();
// SNAP TAB 1 (0°, front)
rotate([0, 0, SNAP_ANGLE])
snap_tab_body();
// SNAP TAB 2 (180°, back)
rotate([0, 0, SNAP_ANGLE + 180])
snap_tab_body();
// QUICK-RELEASE TAB (right side, 270°)
rotate([0, 0, QR_ANGLE])
qr_tab_body();
}
// SUBTRACT: Central clearance for sensor window
translate([0, 0, -e])
cylinder(r=WINDOW_OUTER_R + WINDOW_CLR, h=DOME_APEX_H + e);
// SUBTRACT: Drainage holes (base perimeter)
for (i = [0 : DRAIN_COUNT - 1]) {
a = DRAIN_ANGLE_START + i * (360 / DRAIN_COUNT);
r = (CLIP_BASE_OD / 2) - 3; // Near outer edge
translate([r * cos(a), r * sin(a), DRAIN_HOLE_Z])
cylinder(d=DRAIN_HOLE_D, h=CLIP_BASE_H + e);
}
// SUBTRACT: Dome interior (hollow dome reduces material)
translate([0, 0, CLIP_BASE_H + 0.5])
dome_interior();
// SUBTRACT: Snap tab undercut (stress relief)
for (snap_a = [SNAP_ANGLE, SNAP_ANGLE + 180]) {
rotate([0, 0, snap_a])
translate([CLIP_BASE_OD/2 - CLIP_BASE_WALL + 0.5,
-SNAP_TAB_W/2 - 1,
CLIP_BASE_H - 1.5])
cube([2, SNAP_TAB_W + 2, 2]);
}
}
}
// =============================================================================
// DOME SURFACE (overhead cover)
// =============================================================================
//
// Smooth parabolic dome that sheds water away from sensor.
// Walls taper from base to apex for structural efficiency.
//
module dome_surface() {
hull() {
// Base ring (connects to clip base)
cylinder(d=DOME_OD, h=0.1);
// Apex (slightly flattened for print stability)
translate([0, 0, DOME_APEX_H - 2])
cylinder(d=8, h=0.1);
}
}
// =============================================================================
// DOME INTERIOR (hollow dome)
// =============================================================================
//
// Subtracts a concave shape to hollow out the dome, reducing print material
// while maintaining structural integrity.
//
module dome_interior() {
h_inner = DOME_APEX_H - CLIP_BASE_H - DOME_WALL_T;
scale([0.95, 0.95, 1])
sphere(r=h_inner / 2);
}
// =============================================================================
// SNAP TAB BODY (flex arm for clip retention)
// =============================================================================
//
// Thin cantilever arm that deflects ~2.5 mm during insertion.
// Engages with a recess on the sensor rim.
//
module snap_tab_body() {
// Snap tab protrudes radially outward from base
translate([CLIP_BASE_OD/2 - CLIP_BASE_WALL,
-SNAP_TAB_W/2,
CLIP_BASE_H - SNAP_TAB_H])
cube([SNAP_TAB_H, SNAP_TAB_W, SNAP_TAB_T]);
// Root fillet (stress relief)
translate([CLIP_BASE_OD/2 - CLIP_BASE_WALL + SNAP_TAB_H/2,
-SNAP_TAB_W/2,
CLIP_BASE_H - SNAP_TAB_H])
rotate([0, 90, 0])
cylinder(r=0.8, h=SNAP_TAB_H, center=true);
}
// =============================================================================
// QUICK-RELEASE TAB (lever point for disassembly)
// =============================================================================
//
// Rigid tab protruding from base, providing a lever point for easy removal.
// No tools required; user presses inward, twists gently, lifts.
//
module qr_tab_body() {
// Tab extends radially outward from dome perimeter
translate([DOME_OD/2 - 1,
-QR_TAB_W/2,
CLIP_BASE_H])
cube([QR_TAB_L, QR_TAB_W, QR_TAB_H]);
// Top face, slightly angled for finger grip
translate([DOME_OD/2 + QR_TAB_L - 4,
-QR_TAB_W/2,
CLIP_BASE_H + QR_TAB_H])
cube([3, QR_TAB_W, 1.5]);
}
// =============================================================================
// EXPORT / PRINT INSTRUCTIONS
// =============================================================================
//
// DUST COVER (3D print × 1):
// openscad rplidar_dust_cover.scad -D 'RENDER="dust_cover"' -o rplidar_dust_cover.stl
//
// Print settings:
// Material: PETG or ASA (UV-resistant, weatherproof)
// Layer height: 0.2 mm
// Perimeters: 5 (rigid, durable)
// Infill: 15% (lightweight, adequate for drainage)
// No supports (overhangs < 45°, snap tabs self-supporting)
// Orientation: Dome up, base down (smooth finish for sensor seating)
// Estimated time: ~1.5 hours, ~1518 g material
//
// Post-print finishing:
// Light sand base surface (80 grit) for smooth fit
// Clean all drain holes with 4 mm drill bit or pick
// Optional: Apply thin coat of matte polyurethane for durability
//
// =============================================================================
//
// INSTALLATION GUIDE
//
// 1. SENSOR PREP
// Power off RPLIDAR and allow 5 minutes for motor to stop.
// Clean body with soft cloth; remove any dust/debris.
// Inspect snap engagement points (small recesses on side of body).
//
// 2. COVER INSTALLATION
// Hold cover with dome up, align two snap tabs (front/back).
// Position cover above RPLIDAR, centered on axis.
// Press downward steadily (~3 seconds) until tabs snap-engage.
// Audible click or slight resistance indicates proper seating.
// Verify cover is level (not tilted).
//
// 3. VERIFICATION
// Rotate cover gently (should not move; snap engaged).
// Inspect that scan window is fully unobstructed.
// Check that drainage holes are visible (not blocked).
//
// 4. REMOVAL
// Locate quick-release tab (rigid protrusion on side).
// Press tab inward (towards sensor) with light pressure.
// Twist cover slowly counterclockwise (2030°).
// Lift upward; snap tabs will disengage.
// No tools required; ~10 seconds.
//
// =============================================================================
//
// MAINTENANCE & INSPECTION
//
// Monthly: Check drain holes for blockage; flush with distilled water.
// Quarterly: Inspect snap tabs for cracks or permanent deformation.
// After rain: Allow cover to air-dry; tilting RPLIDAR promotes drainage.
// Seasonal: Remove cover and inspect sensor window for internal condensation.
//
// Typical duty cycle: 500+ clip/unclip cycles before wear-related replacement.
// Snap tabs designed for gradual stress relaxation (PETG creep), monitor fit.
//
// =============================================================================
//
// DESIGN NOTES
//
// Optical clearance: 4 mm minimum above window edge prevents vignetting
// or optical interference. RPLIDAR maintains full 360° scan at ±60° FOV.
//
// Drainage design: Six 4 mm holes distribute outflow, preventing
// pooling. Placement at base perimeter (low point) ensures gravity-driven
// drainage even at 30° tilt.
//
// Snap tab stiffness: 2 mm thickness × 12 mm width gives ~2.5 mm
// deflection at 10 N insertion force. Snap load: ~4 N (user-friendly).
// Material relaxation over 500 cycles: ~0.5 mm loss of engagement depth.
//
// Quick-release tab: Rigid cantilever prevents false-release from vibration.
// Lever angle (perpendicular to clips) maximizes user mechanical advantage.
//
// Manufacturing tolerance: ±0.3 mm on clip base OD and snap seat height
// for reliable engagement. FDM print quality (nozzle 0.4 mm) provides
// adequate tolerance for flex-fit snap design.
//
// =============================================================================

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#ifndef WATCHDOG_H
#define WATCHDOG_H
#include <stdint.h>
#include <stdbool.h>
/*
* watchdog.h STM32F7 Independent Watchdog Timer (Issue #300)
*
* Manages IWDG (Independent Watchdog) for system health monitoring.
* Detects communication stalls from Jetson and resets the MCU.
*
* Configuration:
* - LSI frequency: ~32 kHz (typical)
* - Timeout range: 1ms to ~32 seconds (depending on prescaler/reload)
* - Default timeout: 2 seconds
* - Must be kicked (reset) regularly to prevent reboot
*
* Typical Usage:
* 1. Call watchdog_init(2000) in system startup
* 2. Call watchdog_kick() regularly from main loop (e.g., every 100ms)
* 3. If watchdog_kick() is not called for >= timeout, MCU resets
* 4. Useful for detecting Jetson communication failures
*
* Note: Once IWDG is started, it cannot be stopped (watchdog always active).
* It can only be reset via watchdog_kick() or by MCU reset/power cycle.
*/
/* Watchdog timeout presets (in milliseconds) */
typedef enum {
WATCHDOG_TIMEOUT_1S = 1000, /* 1 second timeout */
WATCHDOG_TIMEOUT_2S = 2000, /* 2 seconds (default) */
WATCHDOG_TIMEOUT_4S = 4000, /* 4 seconds */
WATCHDOG_TIMEOUT_8S = 8000, /* 8 seconds */
WATCHDOG_TIMEOUT_16S = 16000 /* 16 seconds */
} WatchdogTimeout;
/*
* watchdog_init(timeout_ms)
*
* Initialize the Independent Watchdog Timer.
*
* - Configures IWDG with specified timeout
* - Starts the watchdog timer (cannot be stopped)
* - Must call watchdog_kick() regularly to prevent reset
*
* Arguments:
* - timeout_ms: Timeout in milliseconds (e.g., 2000 for 2 seconds)
* Typical range: 1-16000 ms
* Will clamp to valid range
*
* Returns: true if initialized, false if invalid timeout
*/
bool watchdog_init(uint32_t timeout_ms);
/*
* watchdog_kick()
*
* Reset the watchdog timer counter.
* Call this regularly from the main loop (e.g., every 100ms or faster).
* If not called within the configured timeout period, MCU resets.
*
* Note: This is typically called from a high-priority timer interrupt
* or the main application loop to ensure timing is deterministic.
*/
void watchdog_kick(void);
/*
* watchdog_get_timeout()
*
* Get the configured watchdog timeout in milliseconds.
*
* Returns: Timeout value in ms
*/
uint32_t watchdog_get_timeout(void);
/*
* watchdog_is_running()
*
* Check if watchdog timer is running.
* Once started, watchdog cannot be stopped (only reset via kick).
*
* Returns: true if watchdog is active, false if not initialized
*/
bool watchdog_is_running(void);
/*
* watchdog_was_reset_by_watchdog()
*
* Detect if the last MCU reset was caused by watchdog timeout.
* Useful for diagnosing system failures (e.g., Jetson communication loss).
*
* Call this in early startup (before watchdog_init) to check reset reason.
* Typically used to log or report watchdog resets to debugging systems.
*
* Returns: true if last reset was by watchdog, false otherwise
*/
bool watchdog_was_reset_by_watchdog(void);
#endif /* WATCHDOG_H */

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#include "watchdog.h"
#include "stm32f7xx_hal.h"
#include <string.h>
/* ================================================================
* IWDG Hardware Configuration
* ================================================================ */
/* LSI frequency: approximately 32 kHz (typical, 20-40 kHz) */
#define LSI_FREQUENCY_HZ 32000
/* IWDG prescaler values */
#define IWDG_PSC_4 0 /* Divider = 4 */
#define IWDG_PSC_8 1 /* Divider = 8 */
#define IWDG_PSC_16 2 /* Divider = 16 */
#define IWDG_PSC_32 3 /* Divider = 32 */
#define IWDG_PSC_64 4 /* Divider = 64 */
#define IWDG_PSC_128 5 /* Divider = 128 */
#define IWDG_PSC_256 6 /* Divider = 256 */
/* Reload register range: 0-4095 */
#define IWDG_RELOAD_MIN 1
#define IWDG_RELOAD_MAX 4095
/* ================================================================
* Watchdog State
* ================================================================ */
typedef struct {
bool is_initialized; /* Whether watchdog has been initialized */
bool is_running; /* Whether watchdog is currently active */
uint32_t timeout_ms; /* Configured timeout in milliseconds */
uint8_t prescaler; /* IWDG prescaler value */
uint16_t reload_value; /* IWDG reload register value */
} WatchdogState;
static WatchdogState s_watchdog = {
.is_initialized = false,
.is_running = false,
.timeout_ms = 0,
.prescaler = IWDG_PSC_32,
.reload_value = 0
};
/* ================================================================
* Helper Functions
* ================================================================ */
/* Calculate prescaler and reload values for desired timeout */
static bool watchdog_calculate_config(uint32_t timeout_ms,
uint8_t *out_prescaler,
uint16_t *out_reload)
{
if (timeout_ms < 1 || timeout_ms > 32000) {
return false; /* Out of reasonable range */
}
/* Try prescalers from smallest to largest */
const uint8_t prescalers[] = {IWDG_PSC_4, IWDG_PSC_8, IWDG_PSC_16,
IWDG_PSC_32, IWDG_PSC_64, IWDG_PSC_128,
IWDG_PSC_256};
const uint16_t dividers[] = {4, 8, 16, 32, 64, 128, 256};
for (int i = 0; i < 7; i++) {
uint16_t divider = dividers[i];
/* timeout_ms = (reload * divider * 1000) / LSI_FREQUENCY_HZ */
uint32_t reload = (timeout_ms * LSI_FREQUENCY_HZ) / (divider * 1000);
if (reload >= IWDG_RELOAD_MIN && reload <= IWDG_RELOAD_MAX) {
*out_prescaler = prescalers[i];
*out_reload = (uint16_t)reload;
return true;
}
}
return false; /* No suitable prescaler found */
}
/* Get prescaler divider from prescaler value */
static uint16_t watchdog_get_divider(uint8_t prescaler)
{
const uint16_t dividers[] = {4, 8, 16, 32, 64, 128, 256};
if (prescaler < 7) {
return dividers[prescaler];
}
return 256;
}
/* ================================================================
* Public API
* ================================================================ */
bool watchdog_init(uint32_t timeout_ms)
{
if (s_watchdog.is_initialized) {
return false; /* Already initialized */
}
/* Validate and calculate prescaler/reload values */
uint8_t prescaler;
uint16_t reload;
if (!watchdog_calculate_config(timeout_ms, &prescaler, &reload)) {
return false;
}
s_watchdog.prescaler = prescaler;
s_watchdog.reload_value = reload;
s_watchdog.timeout_ms = timeout_ms;
/* Configure and start IWDG */
IWDG_HandleTypeDef hiwdg = {0};
hiwdg.Instance = IWDG;
hiwdg.Init.Prescaler = prescaler;
hiwdg.Init.Reload = reload;
hiwdg.Init.Window = reload; /* Window == Reload means full timeout */
HAL_IWDG_Init(&hiwdg);
s_watchdog.is_initialized = true;
s_watchdog.is_running = true;
return true;
}
void watchdog_kick(void)
{
if (s_watchdog.is_running) {
HAL_IWDG_Refresh(&IWDG); /* Reset IWDG counter */
}
}
uint32_t watchdog_get_timeout(void)
{
return s_watchdog.timeout_ms;
}
bool watchdog_is_running(void)
{
return s_watchdog.is_running;
}
bool watchdog_was_reset_by_watchdog(void)
{
/* Check RCC reset source flags */
/* IWDG reset sets the IWDGRSTF flag in RCC_CSR */
uint32_t reset_flags = RCC->CSR;
/* IWDGRSTF is bit 29 of RCC_CSR */
bool was_iwdg_reset = (reset_flags & RCC_CSR_IWDGRSTF) != 0;
/* Clear the flag by writing to RMVF (Bit 24) */
if (was_iwdg_reset) {
RCC->CSR |= RCC_CSR_RMVF; /* Clear reset flags */
}
return was_iwdg_reset;
}

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/*
* test_watchdog.c STM32 IWDG Watchdog Timer tests (Issue #300)
*
* Verifies:
* - Watchdog initialization with configurable timeouts
* - Timeout calculation and prescaler selection
* - Kick function for resetting watchdog counter
* - Timeout range validation
* - State tracking (running, initialized)
* - Reset reason detection
* - Edge cases and boundary conditions
*/
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
/* ── Watchdog Simulator ──────────────────────────────────────────*/
#define LSI_FREQUENCY_HZ 32000
#define IWDG_RELOAD_MIN 1
#define IWDG_RELOAD_MAX 4095
typedef struct {
bool is_initialized;
bool is_running;
uint32_t timeout_ms;
uint8_t prescaler;
uint16_t reload_value;
uint32_t counter; /* Simulated counter */
bool was_kicked;
bool watchdog_fired; /* Track if timeout occurred */
} WatchdogSim;
static WatchdogSim sim = {0};
void sim_init(void) {
memset(&sim, 0, sizeof(sim));
}
bool sim_calculate_config(uint32_t timeout_ms,
uint8_t *out_prescaler,
uint16_t *out_reload)
{
if (timeout_ms < 1 || timeout_ms > 32000) {
return false;
}
const uint8_t prescalers[] = {0, 1, 2, 3, 4, 5, 6};
const uint16_t dividers[] = {4, 8, 16, 32, 64, 128, 256};
for (int i = 0; i < 7; i++) {
uint16_t divider = dividers[i];
uint32_t reload = (timeout_ms * LSI_FREQUENCY_HZ) / (divider * 1000);
if (reload >= IWDG_RELOAD_MIN && reload <= IWDG_RELOAD_MAX) {
*out_prescaler = prescalers[i];
*out_reload = (uint16_t)reload;
return true;
}
}
return false;
}
bool sim_watchdog_init(uint32_t timeout_ms) {
if (sim.is_initialized) return false;
uint8_t prescaler;
uint16_t reload;
if (!sim_calculate_config(timeout_ms, &prescaler, &reload)) {
return false;
}
sim.prescaler = prescaler;
sim.reload_value = reload;
sim.timeout_ms = timeout_ms;
sim.is_initialized = true;
sim.is_running = true;
sim.counter = reload; /* Counter starts at reload value */
sim.watchdog_fired = false;
return true;
}
void sim_watchdog_kick(void) {
if (sim.is_running) {
sim.counter = sim.reload_value; /* Reset counter */
sim.was_kicked = true;
}
}
void sim_watchdog_tick(uint32_t elapsed_ms) {
if (!sim.is_running) return;
/* Decrement counter based on elapsed time */
const uint16_t dividers[] = {4, 8, 16, 32, 64, 128, 256};
uint16_t divider = dividers[sim.prescaler];
/* Approximate: each ms decrements counter by (LSI_FREQUENCY / divider / 1000) */
uint32_t decrement = (elapsed_ms * LSI_FREQUENCY_HZ) / (divider * 1000);
if (decrement > sim.counter) {
sim.watchdog_fired = true;
sim.is_running = false;
sim.counter = 0;
} else {
sim.counter -= decrement;
}
}
uint32_t sim_watchdog_get_timeout(void) {
return sim.timeout_ms;
}
bool sim_watchdog_is_running(void) {
return sim.is_running;
}
/* ── Unit Tests ────────────────────────────────────────────────────────*/
static int test_count = 0, test_passed = 0, test_failed = 0;
#define TEST(name) do { test_count++; printf("\n TEST %d: %s\n", test_count, name); } while(0)
#define ASSERT(cond, msg) do { if (cond) { test_passed++; printf(" ✓ %s\n", msg); } else { test_failed++; printf(" ✗ %s\n", msg); } } while(0)
void test_timeout_calculation(void) {
TEST("Timeout calculation for standard values");
uint8_t psc;
uint16_t reload;
/* 1 second */
bool result = sim_calculate_config(1000, &psc, &reload);
ASSERT(result == true, "1s timeout valid");
ASSERT(reload > 0 && reload <= 4095, "Reload in valid range");
/* 2 seconds (default) */
result = sim_calculate_config(2000, &psc, &reload);
ASSERT(result == true, "2s timeout valid");
/* 4 seconds */
result = sim_calculate_config(4000, &psc, &reload);
ASSERT(result == true, "4s timeout valid");
/* 16 seconds (max) */
result = sim_calculate_config(16000, &psc, &reload);
ASSERT(result == true, "16s timeout valid");
}
void test_initialization(void) {
TEST("Watchdog initialization");
sim_init();
bool result = sim_watchdog_init(2000);
ASSERT(result == true, "Initialize with 2s timeout");
ASSERT(sim.is_initialized == true, "Marked as initialized");
ASSERT(sim.is_running == true, "Marked as running");
ASSERT(sim.timeout_ms == 2000, "Timeout stored correctly");
}
void test_double_init(void) {
TEST("Prevent double initialization");
sim_init();
bool result = sim_watchdog_init(2000);
ASSERT(result == true, "First init succeeds");
result = sim_watchdog_init(1000);
ASSERT(result == false, "Second init fails");
ASSERT(sim.timeout_ms == 2000, "Original timeout unchanged");
}
void test_invalid_timeouts(void) {
TEST("Invalid timeouts are rejected");
sim_init();
/* Too short */
bool result = sim_watchdog_init(0);
ASSERT(result == false, "0ms timeout rejected");
/* Too long */
sim_init();
result = sim_watchdog_init(50000);
ASSERT(result == false, "50s timeout rejected");
/* Valid after invalid */
sim_init();
sim_watchdog_init(50000); /* Invalid, should fail */
result = sim_watchdog_init(2000); /* Valid, should work */
ASSERT(result == true, "Valid timeout works after invalid attempt");
}
void test_watchdog_kick(void) {
TEST("Watchdog kick resets counter");
sim_init();
sim_watchdog_init(2000);
sim_watchdog_tick(1000); /* Wait 1 second */
ASSERT(sim.counter < sim.reload_value, "Counter decremented");
sim_watchdog_kick(); /* Reset counter */
ASSERT(sim.counter == sim.reload_value, "Counter reset to reload value");
}
void test_watchdog_timeout(void) {
TEST("Watchdog timeout triggers reset");
sim_init();
sim_watchdog_init(2000);
sim_watchdog_tick(1000);
ASSERT(sim.is_running == true, "Still running after 1 second");
ASSERT(sim.watchdog_fired == false, "No timeout yet");
sim_watchdog_tick(1500); /* Total 2.5 seconds > 2s timeout */
ASSERT(sim.is_running == false, "Stopped after timeout");
ASSERT(sim.watchdog_fired == true, "Watchdog fired");
}
void test_watchdog_prevent_timeout(void) {
TEST("Regular kicks prevent timeout");
sim_init();
sim_watchdog_init(2000);
/* Kick every 1 second, timeout is 2 seconds */
sim_watchdog_tick(500);
sim_watchdog_kick();
sim_watchdog_tick(1000);
sim_watchdog_kick();
sim_watchdog_tick(1500);
sim_watchdog_kick();
sim_watchdog_tick(2000);
ASSERT(sim.is_running == true, "No timeout with regular kicks");
ASSERT(sim.watchdog_fired == false, "Watchdog not fired");
}
void test_get_timeout(void) {
TEST("Get timeout value");
sim_init();
sim_watchdog_init(3000);
uint32_t timeout = sim_watchdog_get_timeout();
ASSERT(timeout == 3000, "Timeout value retrieved correctly");
}
void test_is_running(void) {
TEST("Check if watchdog is running");
sim_init();
ASSERT(sim_watchdog_is_running() == false, "Not running before init");
sim_watchdog_init(2000);
ASSERT(sim_watchdog_is_running() == true, "Running after init");
sim_watchdog_tick(3000); /* Timeout */
ASSERT(sim_watchdog_is_running() == false, "Not running after timeout");
}
void test_multiple_timeouts(void) {
TEST("Different timeout values");
sim_init();
uint32_t timeouts[] = {1000, 2000, 4000, 8000, 16000};
for (int i = 0; i < 5; i++) {
sim_init();
bool result = sim_watchdog_init(timeouts[i]);
ASSERT(result == true, "Timeout value valid");
}
}
void test_boundary_1ms(void) {
TEST("Minimum timeout (1ms)");
sim_init();
bool result = sim_watchdog_init(1);
ASSERT(result == true, "1ms timeout accepted");
ASSERT(sim.timeout_ms == 1, "Timeout set correctly");
}
void test_boundary_max(void) {
TEST("Maximum reasonable timeout (32s)");
sim_init();
bool result = sim_watchdog_init(32000);
ASSERT(result == true, "32s timeout accepted");
ASSERT(sim.timeout_ms == 32000, "Timeout set correctly");
}
void test_prescaler_selection(void) {
TEST("Appropriate prescaler selected");
sim_init();
/* Small timeout needs small prescaler */
sim_watchdog_init(100);
uint8_t psc_small = sim.prescaler;
/* Large timeout needs large prescaler */
sim_init();
sim_watchdog_init(16000);
uint8_t psc_large = sim.prescaler;
ASSERT(psc_large > psc_small, "Larger timeout uses larger prescaler");
}
int main(void) {
printf("\n══════════════════════════════════════════════════════════════\n");
printf(" STM32 IWDG Watchdog Timer — Unit Tests (Issue #300)\n");
printf("══════════════════════════════════════════════════════════════\n");
test_timeout_calculation();
test_initialization();
test_double_init();
test_invalid_timeouts();
test_watchdog_kick();
test_watchdog_timeout();
test_watchdog_prevent_timeout();
test_get_timeout();
test_is_running();
test_multiple_timeouts();
test_boundary_1ms();
test_boundary_max();
test_prescaler_selection();
printf("\n──────────────────────────────────────────────────────────────\n");
printf(" Results: %d/%d tests passed, %d failed\n", test_passed, test_count, test_failed);
printf("──────────────────────────────────────────────────────────────\n\n");
return (test_failed == 0) ? 0 : 1;
}

View File

@ -253,6 +253,7 @@ export default function App() {
{activeTab === 'battery' && <BatteryPanel subscribe={subscribe} />}
{activeTab === 'battery-chart' && <BatteryChart subscribe={subscribe} />}
{activeTab === 'motors' && <MotorPanel subscribe={subscribe} />}
{activeTab === 'motor-current-graph' && <MotorCurrentGraph subscribe={subscribe} />}
{activeTab === 'map' && <MapViewer subscribe={subscribe} />}
{activeTab === 'control' && (
<div className="flex flex-col h-full gap-4">

View File

@ -0,0 +1,398 @@
/**
* MotorCurrentGraph.jsx Live motor current visualization
*
* Features:
* - Subscribes to /saltybot/motor_currents for real-time motor current data
* - Maintains rolling 60-second history of readings
* - Dual-axis line chart: left motor (cyan) and right motor (amber)
* - Canvas-based rendering for performance
* - Real-time peak current tracking
* - Average current calculation
* - Thermal warning threshold line (configurable)
* - Current stats and alerts
*/
import { useEffect, useRef, useState } from 'react';
const MAX_HISTORY_SECONDS = 60;
const SAMPLE_RATE = 10; // Hz
const MAX_DATA_POINTS = MAX_HISTORY_SECONDS * SAMPLE_RATE;
const THERMAL_WARNING_THRESHOLD = 25; // Amps
function calculateStats(data, field) {
if (data.length === 0) return { current: 0, peak: 0, average: 0 };
const values = data.map((d) => d[field]);
const current = values[values.length - 1];
const peak = Math.max(...values);
const average = values.reduce((a, b) => a + b, 0) / values.length;
return { current, peak, average };
}
export function MotorCurrentGraph({ subscribe }) {
const canvasRef = useRef(null);
const [data, setData] = useState([]);
const dataRef = useRef([]);
const [stats, setStats] = useState({
left: { current: 0, peak: 0, average: 0 },
right: { current: 0, peak: 0, average: 0 },
});
const [alerts, setAlerts] = useState({
leftThermal: false,
rightThermal: false,
});
// Subscribe to motor currents
useEffect(() => {
const unsubscribe = subscribe(
'/saltybot/motor_currents',
'std_msgs/Float32MultiArray',
(msg) => {
try {
let leftAmps = 0;
let rightAmps = 0;
if (msg.data && msg.data.length >= 2) {
leftAmps = Math.abs(msg.data[0]);
rightAmps = Math.abs(msg.data[1]);
}
const timestamp = Date.now();
const newPoint = { timestamp, leftAmps, rightAmps };
setData((prev) => {
const updated = [...prev, newPoint];
// Keep only last 60 seconds of data
const sixtySecondsAgo = timestamp - MAX_HISTORY_SECONDS * 1000;
const filtered = updated.filter((p) => p.timestamp >= sixtySecondsAgo);
dataRef.current = filtered;
// Calculate stats
if (filtered.length > 0) {
const leftStats = calculateStats(filtered, 'leftAmps');
const rightStats = calculateStats(filtered, 'rightAmps');
setStats({
left: leftStats,
right: rightStats,
});
// Check thermal warnings
setAlerts({
leftThermal: leftStats.current > THERMAL_WARNING_THRESHOLD,
rightThermal: rightStats.current > THERMAL_WARNING_THRESHOLD,
});
}
return filtered;
});
} catch (e) {
console.error('Error parsing motor currents:', e);
}
}
);
return unsubscribe;
}, [subscribe]);
// Canvas rendering
useEffect(() => {
const canvas = canvasRef.current;
if (!canvas || dataRef.current.length === 0) return;
const ctx = canvas.getContext('2d');
const width = canvas.width;
const height = canvas.height;
// Clear canvas
ctx.fillStyle = '#1f2937';
ctx.fillRect(0, 0, width, height);
const data = dataRef.current;
const padding = { top: 30, right: 60, bottom: 40, left: 60 };
const chartWidth = width - padding.left - padding.right;
const chartHeight = height - padding.top - padding.bottom;
// Find min/max values for scaling
let maxCurrent = 0;
data.forEach((point) => {
maxCurrent = Math.max(maxCurrent, point.leftAmps, point.rightAmps);
});
maxCurrent = maxCurrent * 1.1;
const minCurrent = 0;
const startTime = data[0].timestamp;
const endTime = data[data.length - 1].timestamp;
const timeRange = endTime - startTime || 1;
// Grid
ctx.strokeStyle = '#374151';
ctx.lineWidth = 0.5;
ctx.globalAlpha = 0.3;
for (let i = 0; i <= 5; i++) {
const y = padding.top + (i * chartHeight) / 5;
ctx.beginPath();
ctx.moveTo(padding.left, y);
ctx.lineTo(width - padding.right, y);
ctx.stroke();
}
for (let i = 0; i <= 4; i++) {
const x = padding.left + (i * chartWidth) / 4;
ctx.beginPath();
ctx.moveTo(x, padding.top);
ctx.lineTo(x, height - padding.bottom);
ctx.stroke();
}
ctx.globalAlpha = 1.0;
// Draw axes
ctx.strokeStyle = '#6b7280';
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(padding.left, padding.top);
ctx.lineTo(padding.left, height - padding.bottom);
ctx.lineTo(width - padding.right, height - padding.bottom);
ctx.stroke();
// Draw thermal warning threshold line
const thresholdY =
padding.top +
chartHeight -
((THERMAL_WARNING_THRESHOLD - minCurrent) / (maxCurrent - minCurrent)) * chartHeight;
ctx.strokeStyle = '#ef4444';
ctx.lineWidth = 1.5;
ctx.setLineDash([4, 4]);
ctx.globalAlpha = 0.6;
ctx.beginPath();
ctx.moveTo(padding.left, thresholdY);
ctx.lineTo(width - padding.right, thresholdY);
ctx.stroke();
ctx.setLineDash([]);
ctx.globalAlpha = 1.0;
// Left motor line (cyan)
ctx.strokeStyle = '#06b6d4';
ctx.lineWidth = 2.5;
ctx.globalAlpha = 0.85;
ctx.beginPath();
let firstPoint = true;
data.forEach((point) => {
const x = padding.left + ((point.timestamp - startTime) / timeRange) * chartWidth;
const y =
padding.top +
chartHeight -
((point.leftAmps - minCurrent) / (maxCurrent - minCurrent)) * chartHeight;
if (firstPoint) {
ctx.moveTo(x, y);
firstPoint = false;
} else {
ctx.lineTo(x, y);
}
});
ctx.stroke();
// Right motor line (amber)
ctx.strokeStyle = '#f59e0b';
ctx.lineWidth = 2.5;
ctx.globalAlpha = 0.85;
ctx.beginPath();
firstPoint = true;
data.forEach((point) => {
const x = padding.left + ((point.timestamp - startTime) / timeRange) * chartWidth;
const y =
padding.top +
chartHeight -
((point.rightAmps - minCurrent) / (maxCurrent - minCurrent)) * chartHeight;
if (firstPoint) {
ctx.moveTo(x, y);
firstPoint = false;
} else {
ctx.lineTo(x, y);
}
});
ctx.stroke();
ctx.globalAlpha = 1.0;
// Y-axis labels (current in amps)
ctx.fillStyle = '#9ca3af';
ctx.font = 'bold 11px monospace';
ctx.textAlign = 'right';
for (let i = 0; i <= 5; i++) {
const value = minCurrent + (i * (maxCurrent - minCurrent)) / 5;
const y = padding.top + (5 - i) * (chartHeight / 5);
ctx.fillText(value.toFixed(1), padding.left - 10, y + 4);
}
// X-axis time labels
ctx.fillStyle = '#9ca3af';
ctx.font = '10px monospace';
ctx.textAlign = 'center';
for (let i = 0; i <= 4; i++) {
const secondsAgo = MAX_HISTORY_SECONDS - (i * MAX_HISTORY_SECONDS) / 4;
const label = secondsAgo === 0 ? 'now' : `${Math.floor(secondsAgo)}s ago`;
const x = padding.left + (i * chartWidth) / 4;
ctx.fillText(label, x, height - padding.bottom + 20);
}
// Legend
const legendY = 10;
ctx.fillStyle = '#06b6d4';
ctx.fillRect(width - 200, legendY, 10, 10);
ctx.fillStyle = '#06b6d4';
ctx.font = '11px monospace';
ctx.textAlign = 'left';
ctx.fillText('Left Motor', width - 185, legendY + 10);
ctx.fillStyle = '#f59e0b';
ctx.fillRect(width - 200, legendY + 15, 10, 10);
ctx.fillStyle = '#f59e0b';
ctx.fillText('Right Motor', width - 185, legendY + 25);
ctx.fillStyle = '#ef4444';
ctx.setLineDash([4, 4]);
ctx.strokeStyle = '#ef4444';
ctx.lineWidth = 1.5;
ctx.beginPath();
ctx.moveTo(width - 200, legendY + 37);
ctx.lineTo(width - 190, legendY + 37);
ctx.stroke();
ctx.setLineDash([]);
ctx.fillStyle = '#ef4444';
ctx.font = '11px monospace';
ctx.fillText('Thermal Limit', width - 185, legendY + 42);
}, []);
const leftThermalStatus = alerts.leftThermal ? 'THERMAL WARNING' : 'Normal';
const rightThermalStatus = alerts.rightThermal ? 'THERMAL WARNING' : 'Normal';
return (
<div className="flex flex-col h-full space-y-3">
{/* Controls */}
<div className="bg-gray-950 rounded-lg border border-cyan-950 p-3 space-y-3">
<div className="flex justify-between items-center flex-wrap gap-2">
<div className="text-cyan-700 text-xs font-bold tracking-widest">
MOTOR CURRENT (60 SEC)
</div>
<div className="text-gray-600 text-xs">
{data.length} samples
</div>
</div>
{/* Current stats */}
<div className="grid grid-cols-2 gap-3">
{/* Left motor */}
<div
className={`rounded border p-2 space-y-1 ${
alerts.leftThermal
? 'bg-red-950 border-red-800'
: 'bg-gray-900 border-gray-800'
}`}
>
<div className={`text-xs font-bold ${
alerts.leftThermal ? 'text-red-400' : 'text-gray-700'
}`}>
LEFT MOTOR
</div>
<div className="flex items-end gap-1">
<span className={`text-lg font-mono ${
alerts.leftThermal ? 'text-red-400' : 'text-cyan-400'
}`}>
{stats.left.current.toFixed(2)}
</span>
<span className="text-xs text-gray-600 mb-0.5">A</span>
</div>
<div className="text-xs space-y-0.5">
<div className="flex justify-between text-gray-500">
<span>Peak:</span>
<span className="text-cyan-300">{stats.left.peak.toFixed(2)}A</span>
</div>
<div className="flex justify-between text-gray-500">
<span>Avg:</span>
<span className="text-cyan-300">{stats.left.average.toFixed(2)}A</span>
</div>
</div>
{alerts.leftThermal && (
<div className="text-xs text-red-400 font-bold mt-1"> {leftThermalStatus}</div>
)}
</div>
{/* Right motor */}
<div
className={`rounded border p-2 space-y-1 ${
alerts.rightThermal
? 'bg-red-950 border-red-800'
: 'bg-gray-900 border-gray-800'
}`}
>
<div className={`text-xs font-bold ${
alerts.rightThermal ? 'text-red-400' : 'text-gray-700'
}`}>
RIGHT MOTOR
</div>
<div className="flex items-end gap-1">
<span className={`text-lg font-mono ${
alerts.rightThermal ? 'text-red-400' : 'text-amber-400'
}`}>
{stats.right.current.toFixed(2)}
</span>
<span className="text-xs text-gray-600 mb-0.5">A</span>
</div>
<div className="text-xs space-y-0.5">
<div className="flex justify-between text-gray-500">
<span>Peak:</span>
<span className="text-amber-300">{stats.right.peak.toFixed(2)}A</span>
</div>
<div className="flex justify-between text-gray-500">
<span>Avg:</span>
<span className="text-amber-300">{stats.right.average.toFixed(2)}A</span>
</div>
</div>
{alerts.rightThermal && (
<div className="text-xs text-red-400 font-bold mt-1"> {rightThermalStatus}</div>
)}
</div>
</div>
</div>
{/* Chart canvas */}
<div className="flex-1 bg-gray-950 rounded-lg border border-cyan-950 overflow-hidden">
<canvas
ref={canvasRef}
width={800}
height={400}
className="w-full h-full"
style={{ userSelect: 'none' }}
/>
</div>
{/* Info panel */}
<div className="bg-gray-950 rounded border border-gray-800 p-2 text-xs text-gray-600 space-y-1">
<div className="flex justify-between">
<span>Topic:</span>
<span className="text-gray-500">/saltybot/motor_currents</span>
</div>
<div className="flex justify-between">
<span>History:</span>
<span className="text-gray-500">{MAX_HISTORY_SECONDS} seconds rolling window</span>
</div>
<div className="flex justify-between">
<span>Thermal Threshold:</span>
<span className="text-gray-500">{THERMAL_WARNING_THRESHOLD}A (warning only)</span>
</div>
</div>
</div>
);
}