/*
 * MTG RFID Companion - Hardware pin assignments
 *
 * Do NOT change these unless explicitly instructed. SPI2_HOST (VSPI) is
 * shared by the ST7789 display and the MFRC522 RFID reader.
 */

#pragma once

#include "sdkconfig.h"
#include "hal/gpio_types.h"
#include "driver/spi_master.h"

/* SPI2_HOST (VSPI): dedicated to the ST7789 display.
 * On 7-pin ST7789 modules the display labels these SDA (MOSI) and
 * SCL (SCK). MISO is unused (the display never reads the bus; the RFID
 * reader lives on its own SPI3 bus). */
#define HW_SPI_HOST        (SPI2_HOST)
#define HW_SPI_SCK_GPIO    (GPIO_NUM_18)   /* display SCL */
#define HW_SPI_MOSI_GPIO   (GPIO_NUM_23)   /* display SDA */
#define HW_SPI_MISO_GPIO   (GPIO_NUM_NC)   /* unused */

/* MFRC522 RFID reader - OWN SPI3_HOST (HSPI) bus, separate from the display.
 * Using a independent controller avoids any bus interference between the
 * panel and the reader. */
#define HW_RFID_SPI_HOST     (SPI3_HOST)
#define HW_RFID_SCK_GPIO     (GPIO_NUM_16)
#define HW_RFID_MOSI_GPIO    (GPIO_NUM_17)
#define HW_RFID_MISO_GPIO    (GPIO_NUM_13)
#define HW_RC522_CS_GPIO     (GPIO_NUM_26)
#define HW_RC522_RST_GPIO    (GPIO_NUM_22)

/* ST7789 display - 7-pin breakout: CS / DC / RST / SDA / SCL / GND / VCC.
 * SDA and SCL share the SPI bus above (SCL=HW_SPI_SCK, SDA=HW_SPI_MOSI).
 *
 * IMPORTANT: CS and DC are on NON-STRAPPING pins (GPIO21, GPIO19) so the
 * panel never interferes with the ESP32 boot/flash. Keeping these on
 * GPIO15/GPIO2 (strapping pins) blocks flashing while the display is
 * connected, because the panel holds the strap lines at reset. */
#define HW_LCD_CS_GPIO     (GPIO_NUM_21)
#define HW_LCD_DC_GPIO     (GPIO_NUM_19)
#define HW_LCD_RST_GPIO    (GPIO_NUM_4)

/* EC11 rotary encoder */
#define HW_ENC_CLK_GPIO    (GPIO_NUM_32)
#define HW_ENC_DT_GPIO     (GPIO_NUM_33)
#define HW_ENC_SW_GPIO     (GPIO_NUM_25)

/* WS2812B Neopixel */
#define HW_NEOPIXEL_GPIO   (GPIO_NUM_27)

/* Piezo buzzer */
#define HW_BUZZER_GPIO     (GPIO_NUM_14)