80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
#pragma once
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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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* I2C slave for RP2040 (or any master) <-> ESP32-S3 eye.
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*
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* Pins: SDA=GPIO19, SCL=GPIO20 (external pull-ups recommended)
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* Addr: 0x42 (7-bit)
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* Port: I2C1 (camera SCCB stays on I2C0)
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*
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* Mode: I2C slave driver v2 (FIFO + on_receive / on_request).
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* Master still uses EEPROM-style readfrom_mem / writeto_mem.
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*
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* Compact register map (software 32-byte window)
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* ------------------------------------------
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* 0x00 WHOAMI R 0xA5
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* 0x01 VERSION R 0x08
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* 0x02 STATUS R b0 wifi (has IP), b1 cam, b2 local, b3 found
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* 0x03 FLAGS R/W b0 local, b1 show_mask, b2 mask_full, b3 morph_roi
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* 0x04 METHOD R/W 0=contour, 1=rect
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* 0x05 CMD W 0=stop,1=up,2=down,3=left,4=right,
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* 5=cam_on,6=cam_off,7=wifi_on,8=wifi_off
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*
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* Boot: camera and Wi‑Fi are off until CMD 5 / wifi credentials write.
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* Detection runs locally when camera is on and FLAGS.local=1 (no Wi‑Fi required).
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* 0x06 STRIDE R/W 2 or 4
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* 0x07 MIN_AREA_L R/W uint16 LE
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* 0x08 MIN_AREA_H R/W
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* 0x09 H R/W
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* 0x0A S R/W
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* 0x0B V R/W
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* 0x0C H_TOL R/W
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* 0x0D S_TOL R/W
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* 0x0E V_TOL R/W
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* 0x0F APPLY W b0=apply BGR from 0x1D..0x1F, b1=pick apply (uses 0x1D.. as xy packed)
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*
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* 0x10 FOUND R 0/1
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* 0x11 CX_L R int16 LE
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* 0x12 CX_H R
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* 0x13 CY_L R
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* 0x14 CY_H R
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* 0x15 RADIUS_L R uint16 LE
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* 0x16 RADIUS_H R
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* 0x17 AREA_L R
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* 0x18 AREA_H R
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* 0x19 TOTAL_MS_L R
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* 0x1A TOTAL_MS_H R
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* 0x1B DETECT_MS_L R
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* 0x1C DETECT_MS_H R
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*
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* 0x1D..0x1F R/W scratch (BGR or pick coords — see APPLY)
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*
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* 0x20 WIFI_CRED W extended write (not mirrored for reads):
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* [ssid_len][ssid…][pass_len][pass…] then enables Wi‑Fi
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* ssid_len<=32, pass_len<=64
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* 0x21..0x24 IP R IPv4 octets (0.0.0.0 if not connected)
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*
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* 0x25 RGB_R W status LED (WS2812 on GPIO48)
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* 0x26 RGB_G W
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* 0x27 RGB_B W write any/all three to update the LED
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*/
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#define EYE_I2C_ADDR 0x42
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#define EYE_I2C_SDA_GPIO 19
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#define EYE_I2C_SCL_GPIO 20
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#define EYE_I2C_RAM_SIZE 40 /* 0x00..0x27 — includes RGB at 0x25..0x27 */
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esp_err_t eye_i2c_init(void);
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void eye_i2c_set_cam_mutex(void *mutex);
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void eye_i2c_load_wifi_bufs(const char *ssid, const char *pass);
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#ifdef __cplusplus
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}
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#endif
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