source code migrating from gitlab

2026-05-15 15:51:41 -04:00
commit 6cf9a21574
28 changed files with 2960 additions and 0 deletions
@@ -0,0 +1,44 @@
+#include "HD44780.h"
+#include <driver/i2c.h>
+#include <esp_log.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <stdio.h>
+
+#define LCD_ADDR 0x27
+#define SDA_PIN 21
+#define SCL_PIN 22
+#define LCD_COLS 16
+#define LCD_ROWS 2
+
+void app_main(void) {
+  char *tag = "LCD_16x2";
+
+  ESP_LOGI(tag, "starting app_main");
+
+  LCD_init(LCD_ADDR, SDA_PIN, SCL_PIN, LCD_COLS, LCD_ROWS);
+
+  // LCD_clearScreen();
+  //  LCD_writeStr("Hello There");
+  //  LCD_setCursor(0, 1);
+  //  LCD_writeStr("  Second Row!      ");
+
+  char num[8];
+  while (true) {
+    LCD_clearScreen();
+    LCD_writeStr("Counting Down");
+
+    for (int i = 10; i >= 0; i--) {
+      LCD_setCursor(8, 1);
+      sprintf(num, "%d", i);
+      LCD_writeStr(num);
+      vTaskDelay(1000 / portTICK_PERIOD_MS);
+
+      LCD_setCursor(0, 1);
+      LCD_writeStr("                ");
+    }
+    LCD_clearScreen();
+    LCD_writeStr("Liftoff!");
+    vTaskDelay(2000 / portTICK_PERIOD_MS);
+  }
+}