6e627bae15
Researched the exact modules the user is building with and fixed three
concrete issues the earlier speculative firmware got wrong:
1. WiFi: confirmed the target board (Waveshare ESP32-P4-Module-DEV-KIT,
chip ESP32-P4NRW32) bridges WiFi through an onboard ESP32-C6
co-processor over a fixed 7-pin SDIO link (CLK18/CMD19/D0-14/D1-15/
D2-16/D3-17/RESET54, cross-confirmed against Espressif's own
esp-hosted-mcu docs). wifi_manager.c's esp_wifi_init()/esp_wifi_start()
calls don't need to change — esp_wifi_remote/esp_hosted provide a
drop-in-compatible API — but the component manifest (new
main/idf_component.yml) and sdkconfig.defaults were missing entirely.
2. Real pin conflict: the presence sensor's original UART pins (17/18)
directly collided with the SDIO CLK/D3 pins above — wiring it there
would have broken WiFi, the sensor, or both. Moved to GPIO4/5.
3. Swapped placeholder parts for the user's actual hardware:
- BME280 -> BMP280 (GY-BMP280 module): temp+pressure only, no humidity.
Rewrote the driver rather than just renaming it — the old code would
have read nonexistent humidity registers and reported garbage
forever. 3.3V-only wiring note added (the BME280 assumption of
5V-tolerant logic doesn't hold for this specific breakout).
- LD2410 -> RD-03E (Ai-Thinker, not Hi-Link — a different manufacturer
with a different, incompatible UART protocol). Rewrote the frame
parser against the RD-03E's actual (if less-documented) 5-byte
simple-report format. Reports numeric distance instead of a boolean,
which better fits both the hardware's actual output and the backend's
statistical anomaly detector.
README, CMakeLists.txt, and all cross-references updated to match.
49 lines
2.1 KiB
C
49 lines
2.1 KiB
C
// Wi-Fi station-mode connection management, using the credentials in
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// device_config.h.
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//
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// IMPORTANT hardware note: the ESP32-P4 SoC has no integrated 2.4GHz radio.
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// Confirmed against the actual target hardware (Waveshare
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// ESP32-P4-Module-DEV-KIT, chip ESP32-P4NRW32): it pairs the P4 with an
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// onboard ESP32-C6 co-processor over a fixed 7-pin SDIO link, and Wi-Fi is
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// brought up via the `espressif/esp_wifi_remote` + `espressif/esp_hosted`
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// managed components (declared in main/idf_component.yml, configured in
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// sdkconfig.defaults). Those components provide a drop-in-compatible
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// esp_wifi_*/esp_netif_* API — this file's esp_wifi_init()/esp_wifi_start()
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// calls are unchanged from what they'd be on a Wi-Fi-native chip; only the
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// component manifest and sdkconfig differ, not this code. See README.md's
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// Wi-Fi section for the reserved SDIO pins (14-19, 54) and sdkconfig.defaults
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// for the exact config values — still unverified against real hardware
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// (nobody in this build has the physical board), but now backed by a
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// specific, sourced hardware architecture rather than a general caveat.
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#pragma once
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#include <stdbool.h>
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#include "esp_err.h"
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#include "freertos/FreeRTOS.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Initializes NVS (required by esp_wifi), the default netif, the event
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// loop, and esp_wifi in station mode, then starts connecting using
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// DEVICE_WIFI_SSID / DEVICE_WIFI_PASSWORD from device_config.h. Registers
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// an internal event handler that retries on disconnect with a capped
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// backoff. Call once from app_main() before starting the telemetry task.
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esp_err_t wifi_manager_start(void);
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// Blocks (efficiently, via an internal FreeRTOS event group) until the
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// station has an IP address, or until `timeout_ticks` elapses.
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// Returns ESP_OK once connected, ESP_ERR_TIMEOUT otherwise.
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esp_err_t wifi_manager_wait_connected(TickType_t timeout_ticks);
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// True if the station currently holds an IP (i.e. the last known state is
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// "connected"), for callers that want a non-blocking check (e.g. the
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// telemetry task deciding whether to bother building a request this cycle).
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bool wifi_manager_is_connected(void);
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#ifdef __cplusplus
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}
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#endif
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