adebaumann/arduino_gauge_controller
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LED now accepts ranges

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Adrian A. Baumann
2026-04-14 13:41:23 +02:00
parent 6cc0cff069
commit 3a7f98a3d2
2 changed files with 13 additions and 7 deletions
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2
CLAUDE.md
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@@ -90,7 +90,7 @@ Commands arrive as newline-terminated ASCII lines. Each `parse*` function in `pr
| `HOME` | `HOME <id>` / `HOMEALL` | Run homing sequence | | `HOME` | `HOME <id>` / `HOMEALL` | Run homing sequence |
| `SWEEP` | `SWEEP <id> <accel> <speed>` | Start sweep (0/0 stops) | | `SWEEP` | `SWEEP <id> <accel> <speed>` | Start sweep (0/0 stops) |
| `POS?` | `POS?` | Query all gauges: `POS <id> <cur> <tgt> <homed> <homingState> <sweep>` | | `POS?` | `POS?` | Query all gauges: `POS <id> <cur> <tgt> <homed> <homingState> <sweep>` |
| `LED` | `LED <id> <idx> <r> <g> <b>` | Set one LED (0-based index within gauge segment) to RGB colour (0–255 each) | | `LED` | `LED <id> <idx> <r> <g> <b>` | Set one LED (0-based index within gauge segment) to RGB colour (0–255 each); `<idx>` may be a range `N-M` to set LEDs N through M in one command |
| `LED?` | `LED?` | Query all LEDs: one `LED <id> <idx> <r> <g> <b>` line per LED, then `OK` | | `LED?` | `LED?` | Query all LEDs: one `LED <id> <idx> <r> <g> <b>` line per LED, then `OK` |
| `PING` | `PING` | Responds `PONG` | | `PING` | `PING` | Responds `PONG` |

18
Gaugecontroller/Gaugecontroller.ino
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@@ -520,13 +520,19 @@ bool parseLedQuery(const String& line) {
} }
bool parseLed(const String& line) { bool parseLed(const String& line) {
int id, idx, r, g, b; int id, r, g, b;
if (sscanf(line.c_str(), "LED %d %d %d %d %d", &id, &idx, &r, &g, &b) == 5) { char idxToken[16];
if (sscanf(line.c_str(), "LED %d %15s %d %d %d", &id, idxToken, &r, &g, &b) == 5) {
if (id < 0 || id >= GAUGE_COUNT) { sendReply("ERR BAD_ID"); return true; } if (id < 0 || id >= GAUGE_COUNT) { sendReply("ERR BAD_ID"); return true; }
if (idx < 0 || idx >= gaugePins[id].ledCount) { sendReply("ERR BAD_IDX"); return true; } char* dash = strchr(idxToken, '-');
leds[gaugeLedOffset[id] + idx] = CRGB(constrain(r, 0, 255), int idxFirst = atoi(idxToken);
constrain(g, 0, 255), int idxLast = dash ? atoi(dash + 1) : idxFirst;
constrain(b, 0, 255)); if (idxFirst < 0 || idxLast >= gaugePins[id].ledCount || idxFirst > idxLast) {
sendReply("ERR BAD_IDX"); return true;
}
CRGB color(constrain(r, 0, 255), constrain(g, 0, 255), constrain(b, 0, 255));
for (int i = idxFirst; i <= idxLast; i++)
leds[gaugeLedOffset[id] + i] = color;
FastLED.show(); FastLED.show();
sendReply("OK"); sendReply("OK");
return true; return true;