clemsail
f531bf3e55
- board_config.h: add PLIP_SLIC_RM=18, FR=5, SHK=23, PD=19 (A1S KEY3-6 repurposed)
- slic.c/slic.h: new ESP-IDF module porting Ks0835SlicController:
* slic_init(): RM/FR output LOW, SHK input+pullup, PD open-drain HIGH (power-up)
* slic_is_offhook(): reads SHK GPIO23, HIGH = off-hook (active-high, matches A252ConfigStore default)
* slic_ring_start/stop(): RM HIGH + FreeRTOS task toggles FR at 25 Hz (20 ms period)
- CMakeLists.txt: add slic.c to SRCS, esp_driver_gpio to PRIV_REQUIRES
- Kconfig: PLIP_HOOK_GPIO default 4→23, add PLIP_HOOK_ACTIVE_HIGH (default y)
- phone.c: hook reads SHK GPIO23 via HOOK_OFFHOOK_LEVEL/HOOK_PULSE_OPEN macros (active-HIGH);
phone_ring_start/stop() now drives slic_ring_start/stop() for physical bell + audio tone
- main.c: slic_init() called early in boot_task before audio_init
Root cause fixed: SLIC was never powered (PD never released from reset state).
Hook was read on wrong GPIO (4) with wrong polarity. Ring drove only audio, not bell.
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
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* slic.h — K50835F / AG1171-class SLIC control (ESP-IDF port of Ks0835SlicController).
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*
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* Pins (A1S board, from board_config.h):
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* RM GPIO18 Ring Mode output — HIGH = ring burst active
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* FR GPIO5 Forward/Reverse out — toggled at ~25 Hz during ring to drive bell
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* SHK GPIO23 Switch Hook input — HIGH = off-hook (active-high)
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* PD GPIO19 Power Down (OD) — HIGH = SLIC powered (released open-drain)
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*
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* Power-up: PD is open-drain, written HIGH → high-impedance → SLIC active.
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* Power-down: PD driven LOW → SLIC off (no audio, no hook sense).
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*
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* Ring: slic_ring_start() sets RM=1 and spawns/enables a 20 ms FR-toggle task.
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* slic_ring_stop() clears RM=0, FR=0, pauses the toggle task.
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*
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* Hook: slic_is_offhook() reads SHK; HIGH = off-hook (matches A252ConfigStore default).
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*/
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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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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Initialise SLIC GPIO and power up the SLIC.
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* Must be called early in boot, before audio init.
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* Returns ESP_OK on success.
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*/
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esp_err_t slic_init(void);
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/**
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* Returns true when the handset is off-hook (SHK GPIO23 HIGH).
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*/
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bool slic_is_offhook(void);
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/**
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* Activate ringing: RM=HIGH + FR toggles at ~25 Hz (20 ms period).
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* No-op if already ringing.
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*/
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void slic_ring_start(void);
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/**
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* Stop ringing: RM=LOW, FR=LOW, FR toggle suspended.
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* No-op if not ringing.
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*/
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void slic_ring_stop(void);
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/**
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* Returns true if slic_ring_start() was called and not yet stopped.
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*/
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bool slic_is_ringing(void);
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#ifdef __cplusplus
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}
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#endif
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