add external temperature sensor support, separate different test functions, allow to cycle through different test modes

Core/Inc/external_temp.h

@@ -0,0 +1,11 @@
+#ifndef __EXTERNAL_TEMP
+#define __EXTERNAL_TEMP
+
+extern ADC_HandleTypeDef hadc1;
+
+
+
+void external_temp_show_celsius(void);
+void external_temp_show_fahrenheit(void);
+
+#endif

Core/Inc/generic_macros.h

@@ -0,0 +1,10 @@
+#ifndef __GENERIC_MACROS
+#define __GENERIC_MACROS
+
+#define PANIC(status)        \
+	do {                     \
+		GPIOD->ODR = status; \
+		while (1) {}         \
+	} while (0)
+
+#endif

Core/Inc/lcd.h

@@ -0,0 +1,24 @@
+#ifndef __LCD
+#define __LCD
+
+#define DISPLAY_RS  ((uint16_t) (0x1U << 7))
+#define DISPLAY_RW  ((uint16_t) (0x1U << 10))
+#define DISPLAY_ENA ((uint16_t) (0x1U << 11))
+
+#define DISPLAY_POLL_UNTIL_READY do { while (display_read_status() & 0x80) {} } while (0)
+
+#define DISPLAY_SET_INCREMENT do { display_write_instruction_byte(0x06); } while (0)
+#define DISPLAY_SET_DECREMENT do { display_write_instruction_byte(0x04); } while (0)
+
+#define DISPLAY_SET_CURSOR(line, position) do { display_write_instruction_byte(0x80 | (line << 6) | position); } while (0)
+
+#define DISPLAY_CLEAR do { display_write_instruction_byte(0x01); } while (0)
+
+
+void display_init(void);
+uint8_t display_read_status(void);
+void display_write_instruction_byte(uint8_t code);
+void display_write_data_byte(uint8_t code);
+void display_write_data_seq(char *codes);
+
+#endif

Core/Inc/stm32f4xx_hal_conf.h

@@ -38,7 +38,7 @@
 #define HAL_MODULE_ENABLED
 
   /* #define HAL_CRYP_MODULE_ENABLED */
-/* #define HAL_ADC_MODULE_ENABLED */
+#define HAL_ADC_MODULE_ENABLED
 /* #define HAL_CAN_MODULE_ENABLED */
 /* #define HAL_CRC_MODULE_ENABLED */
 /* #define HAL_CAN_LEGACY_MODULE_ENABLED */