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56682534f8
Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: J. Nick Koston <nick@koston.org>
54 lines
2.8 KiB
YAML
54 lines
2.8 KiB
YAML
# The modbus_client actions are self-contained hub devices: each takes the hub (auto-resolved when there
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# is a single modbus client hub) and a templatable device address; no component block is needed. The
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# address is not passed back to reply handlers - recompute the configured expression if needed.
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# The hub does not bound retries, so a retry lambda must (here: a counter capped at 3), or a dead
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# device is retried forever. Reset the counter before the send or on a terminal outcome (on_response)
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# so the cap is per transaction, not per device lifetime. Never reset in on_sent: it fires again on
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# every retry, so the cap would never be reached.
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globals:
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- id: read_retries
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type: int
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initial_value: "0"
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- id: combined_retries
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type: int
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initial_value: "0"
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button:
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- platform: template
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name: "Send Read"
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on_press:
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- lambda: "id(read_retries) = 0;"
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- modbus_client.send:
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address: 0x01
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pdu: [0x03, 0x00, 0x10, 0x00, 0x01]
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# on_no_response lambda form: return true to retry. `request` is the timed-out PDU.
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on_no_response: !lambda "return !request.empty() && request[0] == 0x03 && id(read_retries)++ < 3;"
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# Per-send inline reply handlers (fire-and-continue): they run when this send's outcome is known;
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# the targeted address is not passed back - recompute the configured expression if needed.
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# A pdu lambda can hand-assemble bytes or return a modbus::helpers::create_*_pdu() builder result.
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- modbus_client.send:
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address: 0x01
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pdu: !lambda "return modbus::helpers::create_read_pdu(modbus::FunctionCode::READ_HOLDING_REGISTERS, 0x0010, 1);"
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- modbus_client.send:
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address: !lambda "return 1;"
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pdu: !lambda "return {0x03, 0x00, 0x10, 0x00, 0x01};"
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on_sent:
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then:
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- lambda: 'ESP_LOGI("modbus_client.test", "sent fc 0x%X", request.empty() ? 0 : request[0]);'
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on_response:
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then:
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- lambda: |-
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id(combined_retries) = 0;
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ESP_LOGI("modbus_client.test", "got %d bytes", (int) response.size());
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on_error:
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then:
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- lambda: 'ESP_LOGW("modbus_client.test", "fc 0x%X exception %d", request.empty() ? 0 : request[0], (int) exception_code);'
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# on_no_response combined form: run actions on timeout AND decide the retry via nested retry:.
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on_no_response:
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then:
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- lambda: 'ESP_LOGW("modbus_client.test", "no reply for fc 0x%X", request.empty() ? 0 : request[0]);'
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retry: !lambda "return !request.empty() && request[0] == 0x03 && id(combined_retries)++ < 3;"
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on_not_sent:
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then:
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- lambda: 'ESP_LOGW("modbus_client.test", "not sent fc 0x%X", request.empty() ? 0 : request[0]);'
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