commit 0df10c1f18458b7a3c398a2f0ef131cb9e7f21b6 · dunkirk.sh/daedalus

firmware/CMakeLists.txt

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           pico_stdlib

     

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           hardware_gpio

     

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           hardware_uart

     

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           hardware_pwm

     

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           pico_multicore

     

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       )

     

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+97 -63

firmware/src/main.cpp

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       #include <stdlib.h>

     

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       #include <cstring>

     

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       #include <stdio.h>

     

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       #include "pico/multicore.h"

     

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       #include "pico/stdlib.h"

     

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       #include <time.h>

     

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       // Define GPIO pins for rows and columns

     

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       const uint ROW_PINS[4] = {12, 13, 14, 15};

     

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       const uint COL_PINS[6] = {17, 18, 19, 20, 21, 22};

     

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       #define ROWS 4

     

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       #define COLS 6

     

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       const uint ROW_PINS[4] = {12, 13, 14, 15};

     

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       const uint COL_PINS[6] = {17, 18, 19, 20, 21, 22};

     

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       // LED state matrix

     

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       uint8_t led_states[ROWS][COLS] = {0};

     

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       void setup_pins() {

     

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         // Set up row pins

     

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         for (int i = 0; i < ROWS; i++) {

     

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           gpio_init(ROW_PINS[i]);

     

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           gpio_set_dir(ROW_PINS[i], GPIO_OUT);

     

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           gpio_put(ROW_PINS[i], 0);  // Start with LEDs off

     

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         }

     

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       // brightness control

     

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       uint8_t brightness = 100;

     

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         // Set up column pins

     

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         for (int j = 0; j < COLS; j++) {

     

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           gpio_init(COL_PINS[j]);

     

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           gpio_set_dir(COL_PINS[j], GPIO_OUT);

     

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           gpio_put(COL_PINS[j], 1);  // Start with LEDs off

     

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       // timing vars

     

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       bool fading = false;

     

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       absolute_time_t last_char_time;

     

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       absolute_time_t fade_start_time;

     

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       const uint32_t inactivity_timeout_ms = 0;

     

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       const uint32_t fade_duration_ms = 1200;

     

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       void randomize_matrix() {

     

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         for (int row = 0; row < ROWS; row++) {

     

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           for (int col = 0; col < COLS; col++) {

     

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             led_states[row][col] = rand() % 2;

     

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           }

     

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         }

     

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       }

     

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         last_update = current_time;

     

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         // Display the current state

     

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         for (int row = 0; row < ROWS; row++) {

     

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           // Set row active

     

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           gpio_put(ROW_PINS[row], 1);

     

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         uint32_t time_since_last_char = absolute_time_diff_us(last_char_time, get_absolute_time()) / 1000;

     

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           // Set column states for this row

     

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           for (int col = 0; col < COLS; col++) {

     

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             // LED on = column LOW, LED off = column HIGH

     

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             gpio_put(COL_PINS[col], led_states[row][col] ? 0 : 1);

     

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           }

     

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         if (!fading && time_since_last_char > inactivity_timeout_ms) {

     

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           // start fading

     

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           fading = true;

     

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           fade_start_time = get_absolute_time();

     

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         }

     

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           // Small delay for this row to be visible

     

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           sleep_us(100);

     

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         if (fading) {

     

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           uint32_t fade_elapsed_ms = absolute_time_diff_us(fade_start_time, get_absolute_time()) / 1000;

     

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           // Deactivate row

     

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           gpio_put(ROW_PINS[row], 0);

     

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           if (fade_elapsed_ms >= fade_duration_ms) {

     

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             brightness = 0;

     

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           } else {

     

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             brightness = 100 - ((fade_elapsed_ms * 100) / fade_duration_ms);

     

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           }

     

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         }

     

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       }

     

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       // Function to set a specific LED state

     

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       void set_led(int row, int col, bool state) {

     

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         if (row >= 0 && row < ROWS && col >= 0 && col < COLS) {

     

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           led_states[row][col] = state ? 1 : 0;

     

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         // Skip display update if brightness is 0

     

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         if (brightness == 0) {

     

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           // Turn off all rows and set all columns high to ensure LEDs are off

     

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           for (int i = 0; i < ROWS; i++) {

     

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             gpio_put(ROW_PINS[i], 0);

     

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           }

     

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           for (int j = 0; j < COLS; j++) {

     

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             gpio_put(COL_PINS[j], 1);

     

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           }

     

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           return;

     

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         }

     

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       }

     

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       // Function to set the entire matrix state

     

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       void set_matrix_state(const uint8_t new_state[ROWS][COLS]) {

     

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         memcpy(led_states, new_state, sizeof(led_states));

     

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       }

     

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         // Software PWM cycle

     

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         for (uint8_t pwm_cycle = 0; pwm_cycle < brightness; pwm_cycle++) {

     

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           // For each row

     

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           for (int row = 0; row < ROWS; row++) {

     

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             // Activate row

     

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             gpio_put(ROW_PINS[row], 1);

     

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       void random_state(float density) {

     

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         // clamp

     

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         if (density > 1.0f)

     

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           density = 1.0f;

     

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         if (density < 0.0f)

     

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           density = 0.0f;

     

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             // Set column states for this row

     

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             for (int col = 0; col < COLS; col++) {

     

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               gpio_put(COL_PINS[col], led_states[row][col] ? 0 : 1);

     

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             }

     

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         for (int row = 0; row < ROWS; row++) {

     

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           for (int col = 0; col < COLS; col++) {

     

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             float r = (float)rand() / (float)RAND_MAX;

     

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             led_states[row][col] = (r < density) ? 1 : 0;

     

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             // Keep row active for a short time

     

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             sleep_us(50);

     

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             // Deactivate row

     

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             gpio_put(ROW_PINS[row], 0);

     

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           }

     

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         }

     

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       }

     

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       const uint8_t ALL_ON[ROWS][COLS] = {{1, 1, 1, 1, 1, 1},

     

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                                           {1, 1, 1, 1, 1, 1},

     

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                                           {1, 1, 1, 1, 1, 1},

     

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                                           {1, 1, 1, 1, 1, 1}};

     

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       void setup_pins() {

     

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         // Set up row pins

     

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         for (int i = 0; i < ROWS; i++) {

     

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           gpio_init(ROW_PINS[i]);

     

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           gpio_set_dir(ROW_PINS[i], GPIO_OUT);

     

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           gpio_put(ROW_PINS[i], 0);  // Start with LEDs off

     

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         }

     

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       const uint8_t ALL_OFF[ROWS][COLS] = {{0, 0, 0, 0, 0, 0},

     

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                                            {0, 0, 0, 0, 0, 0},

     

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                                            {0, 0, 0, 0, 0, 0},

     

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                                            {0, 0, 0, 0, 0, 0}};

     

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         // Set up column pins

     

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         for (int j = 0; j < COLS; j++) {

     

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           gpio_init(COL_PINS[j]);

     

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           gpio_set_dir(COL_PINS[j], GPIO_OUT);

     

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           gpio_put(COL_PINS[j], 1);  // Start with LEDs off

     

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         }

     

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       }

     

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       void core1_main() {

     

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         while (true) {

     

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           update_led_display(1000);

     

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           update_led_display(1000);  // Update at 60Hz for smoother display

     

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           sleep_ms(1);  // Small delay to prevent tight loop

     

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         }

     

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       }

     

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         stdio_init_all();

     

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         setup_pins();

     

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         // seed the random number generator

     

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         srand(time_us_32());

     

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         last_char_time = get_absolute_time();

     

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         multicore_launch_core1(core1_main);

     

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         while (true) {

     

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           random_state(0.5);  // Turn random LEDs ON

     

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           // set_matrix_state(ALL_ON);

     

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           sleep_ms(200);

     

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           // set_matrix_state(ALL_OFF);

     

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           // sleep_ms(500);

     

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           // check if there are characters available from the input

     

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           int c = getchar_timeout_us(0);

     

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           if (c != PICO_ERROR_TIMEOUT) {

     

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             // echo char back

     

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             printf("%c", c);

     

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             last_char_time = get_absolute_time();

     

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             fading = false;

     

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             brightness = 100;

     

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             randomize_matrix();

     

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             while (getchar_timeout_us(0) != PICO_ERROR_TIMEOUT) {}

     

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           }

     

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           sleep_ms(10);

     

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         }

     

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       }