Upload New File

alarm.c

+/**
+ * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "pico/stdlib.h"
+#include "lib/fonts.h"
+#include "lib/st7735.h"
+
+int main() {
+#ifndef PICO_DEFAULT_LED_PIN
+    #warning blink example requires a board with a regular LED
+#else
+    //TODO: Create uints for the pins you are using
+    const uint LED_PIN = PICO_DEFAULT_LED_PIN;
+    const uint BUTTON_PIN_1 = 20;
+    const uint BUTTON_PIN_2 = 21;
+    const uint BUTTON_PIN_3 = 22;
+
+    //TODO: Initialise the pins
+    gpio_init(LED_PIN);
+    gpio_init(BUTTON_PIN_1);
+    gpio_init(BUTTON_PIN_2);
+    gpio_init(BUTTON_PIN_3);
+
+    //TODO: Set the pins to in/out
+    gpio_set_dir(LED_PIN, GPIO_OUT);
+    gpio_set_dir(BUTTON_PIN_1, GPIO_IN);
+    gpio_set_dir(BUTTON_PIN_2, GPIO_IN);
+    gpio_set_dir(BUTTON_PIN_3, GPIO_IN);
+
+    //TODO: Initialise ST7735
+    ST7735_Init();
+
+    while (true) {
+        //TODO: Start screen and create variables
+        ST7735_FillScreen(ST7735_BLACK);
+        ST7735_WriteString(5, 20, "HI", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+
+        sleep_ms(500);
+        gpio_put(LED_PIN, 1);
+        sleep_ms(3000);
+        gpio_put(LED_PIN, 0);
+
+        int minutes = 0;
+        char minutesString[5];
+        int seconds = 0;
+        char secondsString[5];
+        bool start = false;
+
+        while (!start) {
+            //TODO: Display screen with current time, and set up each of the buttons to add a minute, remove a minute and start the timer
+            ST7735_FillScreen(ST7735_BLACK);
+            sprintf(minutesString, "%d", minutes);
+            ST7735_WriteString(5, 20, minutesString, Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            ST7735_WriteString(5, 45, "Min", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            ST7735_WriteString(5, 70, "0", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            ST7735_WriteString(5, 95, "Sec", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            if (!gpio_get(BUTTON_PIN_1)) {
+                gpio_put(LED_PIN, 1);
+                minutes = minutes + 1;
+                sleep_ms(200);
+            }
+            else
+            {
+                gpio_put(LED_PIN, 0);
+            }
+            if (!gpio_get(BUTTON_PIN_2)) {
+                gpio_put(LED_PIN, 1);
+                if (minutes != 0) {
+                    minutes = minutes - 1;
+                }
+                sleep_ms(200);
+            }
+            else
+            {
+                gpio_put(LED_PIN, 0);
+            }
+            if (!gpio_get(BUTTON_PIN_3))
+            {
+                start = true;
+                break;
+            }
+        }
+        while (start) {
+            //TODO: Display the countdown timer going down, in minutes and seconds
+            ST7735_FillScreen(ST7735_BLACK);
+            sprintf(minutesString, "%d", minutes);
+            sprintf(secondsString, "%d", seconds);
+            ST7735_WriteString(5, 20, minutesString, Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            ST7735_WriteString(5, 45, "Min", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            ST7735_WriteString(5, 70, secondsString, Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            ST7735_WriteString(5, 95, "Sec", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            sleep_ms(1000);
+            if (seconds == 0) {
+                if (minutes == 0) {
+                    start = false;
+                    break;
+                }
+                else {
+                    seconds = 59;
+                    minutes = minutes - 1;
+                }
+            }
+            else {
+                seconds = seconds - 1;
+            }
+
+        }
+        while (true) {
+            //TODO: Display a message to alert the user the timer is done (possibly flashing) which stops when a button is pressed
+            ST7735_FillScreen(ST7735_BLACK);
+            ST7735_WriteString(5, 20, "DONE", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            ST7735_WriteString(5, 45, "DONE", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            ST7735_WriteString(5, 70, "DONE", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            ST7735_WriteString(5, 95, "DONE", Font_16x26, ST7735_WHITE, ST7735_BLACK);
+            sleep_ms(200);
+            if (gpio_get(BUTTON_PIN_1)) {
+                break;
+            }
+            if (gpio_get(BUTTON_PIN_2)) {
+                break;
+            }
+            if (gpio_get(BUTTON_PIN_3)) {
+                break;
+            }
+            ST7735_FillScreen(ST7735_WHITE);
+            ST7735_WriteString(5, 20, "DONE", Font_16x26, ST7735_BLACK, ST7735_WHITE);
+            ST7735_WriteString(5, 45, "DONE", Font_16x26, ST7735_BLACK, ST7735_WHITE);
+            ST7735_WriteString(5, 70, "DONE", Font_16x26, ST7735_BLACK, ST7735_WHITE);
+            ST7735_WriteString(5, 95, "DONE", Font_16x26, ST7735_BLACK, ST7735_WHITE);
+            sleep_ms(200);
+        }
+    }
+#endif
+}