247 lines
9.0 KiB
C++
247 lines
9.0 KiB
C++
#include "blk_box_drivers/expander.hpp"
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#include "pins.h"
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#include "blk_box_drivers/i2c.h"
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#include "driver/i2c_master.h"
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#include "driver/gpio.h"
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#include "esp_log.h"
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#include "esp_err.h"
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static const char *TAG = "EXPANDER";
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i2c_master_dev_handle_t expander_i2c_dev_handle;
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const static uint8_t REG_WHOAMI = 0x01;
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const static uint8_t REG_SW_VERSION = 0x02;
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const static uint8_t REG_EVENT_QUEUE_POP = 0x10;
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const static uint8_t REG_EVENT_QUEUE_LEN = 0x11;
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const static uint8_t REG_STATE_BUTTONS = 0x20;
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const static uint8_t REG_STATE_SWITCHES = 0x21;
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const static uint8_t REG_STATE_KEYPAD = 0x22;
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const static uint8_t REG_STATE_TOUCH = 0x23;
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const static uint8_t REG_STATE_RFID = 0x24;
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const static uint8_t REG_STATE_HALL = 0x25;
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const static uint8_t REG_STATE_CLOSE = 0x26;
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const static uint8_t REG_RESET = 0x30;
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const static uint8_t REG_HALL_SENSITIVITY = 0x31;
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const static uint8_t REG_CLOSE_SENSITIVITY = 0x32;
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const static uint8_t REG_SWITCH_TOUCH_EVENT = 0x33;
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ExpanderPeripheral expander_peripheral;
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// forward declarations
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static void handle_event(uint8_t event);
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static void handle_button_switch_event(uint8_t event);
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static void handle_keypad_event(uint8_t event);
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static void handle_touch_event(uint8_t event);
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static void handle_rfid_event(uint8_t event);
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static void handle_close_hal_event(uint8_t event);
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void init_expander() {
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ESP_LOGI(TAG, "Initializing expander...");
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i2c_device_config_t dev_config = {
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.dev_addr_length = I2C_ADDR_BIT_LEN_7,
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.device_address = EXPANDER_I2C_ADDR,
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.scl_speed_hz = EXPANDER_I2C_SPEED,
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.scl_wait_us = 0, // default
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.flags = {
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.disable_ack_check = 0,
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}
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};
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ESP_ERROR_CHECK(i2c_master_bus_add_device(i2c_main_bus_handle, &dev_config, &expander_i2c_dev_handle));
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ESP_LOGD(TAG, "Expander I2C device added to bus");
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// TODO: setup interrupt on PIN_EXPANDER_INT
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uint8_t read_buf[2] = {0};
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ESP_ERROR_CHECK(i2c_master_transmit_receive(expander_i2c_dev_handle, ®_WHOAMI, 1, read_buf, 1, EXPANDER_TIMEOUT_MS));
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if (read_buf[0] != EXPANDER_WHOAMI_VALUE) {
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ESP_LOGE(TAG, "WHOAMI mismatch, expected 0x%02X, got 0x%02X", EXPANDER_WHOAMI_VALUE, read_buf[0]);
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return;
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}
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ESP_LOGD(TAG, "Expander WHOAMI check passed");
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ESP_ERROR_CHECK(i2c_master_transmit_receive(expander_i2c_dev_handle, ®_SW_VERSION, 1, read_buf, 2, EXPANDER_TIMEOUT_MS));
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// init the peripheral struct
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expander_peripheral.state_mutex = xSemaphoreCreateMutex();
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expander_peripheral.button_press_events= xQueueCreate(EXPANDER_EVENT_QUEUE_SIZE, sizeof(Button));
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expander_peripheral.button_release_events= xQueueCreate(EXPANDER_EVENT_QUEUE_SIZE, sizeof(Button));
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expander_peripheral.switch_flip_events= xQueueCreate(EXPANDER_EVENT_QUEUE_SIZE, sizeof(SwitchFlip));
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expander_peripheral.switch_touch_events= xQueueCreate(EXPANDER_EVENT_QUEUE_SIZE, sizeof(SwitchTouch));
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expander_peripheral.touch_events= xQueueCreate(EXPANDER_EVENT_QUEUE_SIZE, sizeof(TouchedReleased));
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expander_peripheral.keypad_press_events= xQueueCreate(EXPANDER_KEYPAD_QUEUE_SIZE, sizeof(KeypadKey));
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expander_peripheral.keypad_release_events= xQueueCreate(EXPANDER_KEYPAD_QUEUE_SIZE, sizeof(KeypadKey));
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ESP_LOGI(TAG, "Expander initialized! SW version: v%d.%d", read_buf[0], read_buf[1]);
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}
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void get_events() {
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uint8_t recv;
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do {
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ESP_ERROR_CHECK(i2c_master_transmit_receive(expander_i2c_dev_handle, ®_EVENT_QUEUE_POP, 1, &recv, 1, EXPANDER_TIMEOUT_MS));
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handle_event(recv);
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} while (gpio_get_level(PIN_EXPANDER_INT) == 0);
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}
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static void handle_event(uint8_t event) {
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const uint8_t BUTTON_SWITCH = 0b000;
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const uint8_t KEYPAD = 0b001;
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const uint8_t TOUCH = 0b010;
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const uint8_t RFID = 0b011;
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ESP_LOGI(TAG, "Expander event: 0b%08b (0x%02X)", event, event);
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if (event == 0) {
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ESP_LOGE(TAG, "We read from event queue while it was empty!");
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return;
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}
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uint8_t type_bits = event >> 5;
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switch (type_bits) {
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case BUTTON_SWITCH:
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handle_button_switch_event(event);
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break;
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case KEYPAD:
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handle_keypad_event(event);
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break;
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case TOUCH:
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handle_touch_event(event);
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break;
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case RFID:
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handle_rfid_event(event);
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break;
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default:
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handle_close_hal_event(event);
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break;
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}
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}
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static void handle_button_switch_event(uint8_t event) {
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const uint8_t PRESSED_NOT_RELEASED_BIT = 0b10000;
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const uint8_t SWITCH_NOT_BUTTON_BIT = 0b01000;
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const uint8_t SWITCH_UP_NOT_DOWN_BIT = 0b00100;
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const uint8_t NUMBER_MASK = 0b00011;
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bool pressed = (event & PRESSED_NOT_RELEASED_BIT) != 0;
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uint8_t number = event & NUMBER_MASK;
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if ((event & SWITCH_NOT_BUTTON_BIT) != 0) {
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// For now, we support two position switches by only looking at the switch up events
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bool switch_up = (event & SWITCH_UP_NOT_DOWN_BIT) != 0;
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if (!switch_up) {
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return;
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}
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Switch sw = static_cast<Switch>(number);
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SwitchFlip sw_flip = SwitchFlip(sw, pressed);
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if (xQueueSendToBack(expander_peripheral.switch_flip_events, &sw_flip, 0) != pdTRUE) {
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ESP_LOGE(TAG, "Failed to send switch flip event!");
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}
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xSemaphoreTake(expander_peripheral.state_mutex, portMAX_DELAY);
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if (pressed) {
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// set
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expander_peripheral.state.switch_state |= 1 << number;
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} else {
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// clear
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expander_peripheral.state.switch_state &= ~(1 << number);
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}
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xSemaphoreGive(expander_peripheral.state_mutex);
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} else {
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// button
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Button button = static_cast<Button>(number);
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if (pressed) {
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if (xQueueSendToBack(expander_peripheral.button_press_events, &button, 0) != pdTRUE) {
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ESP_LOGE(TAG, "Failed to send button press event!");
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}
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xSemaphoreTake(expander_peripheral.state_mutex, portMAX_DELAY);
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expander_peripheral.state.button_state |= 1 << number;
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xSemaphoreGive(expander_peripheral.state_mutex);
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} else {
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if (xQueueSendToBack(expander_peripheral.button_release_events, &button, 0) != pdTRUE) {
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ESP_LOGE(TAG, "Failed to send button release event!");
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}
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xSemaphoreTake(expander_peripheral.state_mutex, portMAX_DELAY);
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expander_peripheral.state.button_state &= ~(1 << number);
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xSemaphoreGive(expander_peripheral.state_mutex);
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}
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}
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}
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static void handle_keypad_event(uint8_t event) {
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const uint8_t PRESSED_NOT_RELEASED_BIT = 0b10000;
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const uint8_t KEY_MASK = 0b1111;
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bool pressed = (event & PRESSED_NOT_RELEASED_BIT) != 0;
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uint8_t number = event & KEY_MASK;
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KeypadKey key = static_cast<KeypadKey>(number);
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// starcode system gets first dibs
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// TODO: do starcode inbetweener
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// if starcode_handle_keypad(key, pressed).await {
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// return;
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// }
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if (pressed) {
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if (xQueueSendToBack(expander_peripheral.keypad_press_events, &key, 0) != pdTRUE) {
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ESP_LOGE(TAG, "Failed to send keypad press event!");
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}
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xSemaphoreTake(expander_peripheral.state_mutex, portMAX_DELAY);
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expander_peripheral.state.keypad_state |= 1 << number;
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xSemaphoreGive(expander_peripheral.state_mutex);
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} else {
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if (xQueueSendToBack(expander_peripheral.keypad_release_events, &key, 0) != pdTRUE) {
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ESP_LOGE(TAG, "Failed to send keypad release event!");
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}
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xSemaphoreTake(expander_peripheral.state_mutex, portMAX_DELAY);
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expander_peripheral.state.keypad_state &= ~(1 << number);
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xSemaphoreGive(expander_peripheral.state_mutex);
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}
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}
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static void handle_touch_event(uint8_t event) {
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const uint8_t TOUCHED_NOT_UNTOUCHED_BIT = 0b10000;
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const uint8_t SENSOR_MASK = 0b0111;
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const uint8_t FINGERPRINT_BIT = 0b0100;
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bool touched = (event & TOUCHED_NOT_UNTOUCHED_BIT) != 0;
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uint8_t sensor = event & SENSOR_MASK;
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if ((sensor & FINGERPRINT_BIT) != 0) {
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TouchedReleased touch_state = static_cast<TouchedReleased>(touched);
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if (xQueueSendToBack(expander_peripheral.touch_events, &touch_state, 0) != pdTRUE) {
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ESP_LOGE(TAG, "Failed to send touch event!");
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}
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} else {
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Switch sw = static_cast<Switch>(sensor);
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SwitchTouch sw_touch = SwitchTouch(sw, touched);
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if (xQueueSendToBack(expander_peripheral.switch_touch_events, &sw_touch, 0) != pdTRUE) {
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ESP_LOGE(TAG, "Failed to send switch touch event!");
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}
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}
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xSemaphoreTake(expander_peripheral.state_mutex, portMAX_DELAY);
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if (touched) {
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expander_peripheral.state.touch_state |= 1 << sensor;
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} else {
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expander_peripheral.state.touch_state &= ~(1 << sensor);
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}
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xSemaphoreGive(expander_peripheral.state_mutex);
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}
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static void handle_rfid_event(uint8_t event) {
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// TODO: impl
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(void)event;
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}
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static void handle_close_hal_event(uint8_t event) {
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// TODO: impl
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(void)event;
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}
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