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labW3barnestr/Inc/delay.h

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+/*
+ * delay.h
+ *
+ * Author: Trevor Barnes
+ */
+
+//include guards
+#ifndef DELAY_H_
+#define DELAY_H_
+
+#define STK_CTRL (volatile uint32_t*) 0xE000E010
+#define STK_LOAD (volatile uint32_t*) 0xE000E014
+#define STK_VAL (volatile uint32_t*) 0xE000E018
+
+#define EN 1
+#define TICKINT (1<<1)
+#define CLKSOURCE (1<<2)
+#define COUNTFLAG (1<<16)
+
+/*
+ * delay_ms
+ * 		Busy wait for n ms
+ *
+ * 		For n iterations
+ * 			load number of cycles for 1 ms
+ * 			set one to enable and clock source
+ *
+ * 			wait for countflag to be set
+ */
+void delay_ms(uint32_t n);
+
+/*
+ * delay_ms
+ * 		Busy wait for n us
+ *
+ * 		For n iterations
+ * 			load number of cycles for 1 us
+ * 			set one to enable and clock source
+ *
+ * 			wait for countflag to be set
+ */
+void delay_us(uint32_t n);
+
+#endif /* DELAY_H_ */

labW3barnestr/Inc/keypad.h

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+/*
+ * keypad.h
+ *
+ * Created on: Dec 17, 2021
+ * Author: Trevor Barnes
+ */
+
+#ifndef KEYPAD_H_
+#define KEYPAD_H_
+
+#include <inttypes.h>
+
+
+#define RCC_AHB1ENR (volatile uint32_t*) 0x40023830
+#define GPIOCEN 2
+#define GPIOC_MODER (volatile uint32_t*) 0x40020800
+#define GPIOC_PUPDR (volatile uint32_t*) 0x4002080C
+#define GPIOC_IDR (volatile uint32_t*) 0x40020810
+#define GPIOC_ODR (volatile uint32_t*) 0x40020814
+#define GPIOC_BSRR (volatile uint32_t*) 0x40020818
+
+extern void keypad_init();
+
+//Returns the code for the current key pressed
+//	0 - No key
+//  1  2   3  4
+//
+//  5  6  7  8
+//
+//  9 10  11 12
+//
+//  13 14 15 16
+// 255 - Error
+// This function does not block the flow of the program
+extern uint8_t keypad_getKeyNoBlock();
+
+//Returns the code for the next pressed
+//	0 - No key
+//  1  2   3  4
+//
+//  5  6  7  8
+//
+//  9 10  11 12
+//
+//  13 14 15 16
+// 255 - Error
+// This function will block the flow of the program until a
+//   key is pressed.
+extern uint8_t keypad_getKey();
+
+#endif /* KEYPAD_H_ */

labW3barnestr/Inc/lcd.h

@@ -0,0 +1,84 @@
+/*
+ * LCD.H
+ *
+ * Created on: Dec 17, 2020
+ * Author: Trevor Barnes
+ */
+
+//Include Guards
+#ifndef LCD_H_
+#define LCD_H_
+
+#include <inttypes.h>
+
+#define RCC_AHB1ENR (volatile uint32_t*) 0x40023830
+
+// GPIO A Addresses and Values
+#define GPIOA_MODER (volatile uint32_t*) 0x40020000
+#define GPIOA_IDR (volatile uint32_t*) 0x40020010
+#define GPIOA_ODR (volatile uint32_t*) 0x40020014
+#define GPIOA_BSRR (volatile uint32_t*) 0x40020018
+#define GPIOAEN (1<<0)
+
+// GPIO C Addresses and Values
+#define GPIOC_MODER (volatile uint32_t*) 0x40020800
+#define GPIOC_IDR (volatile uint32_t*) 0x40020810
+#define GPIOC_ODR (volatile uint32_t*) 0x40020814
+#define GPIOC_BSRR (volatile uint32_t*) 0x40020818
+#define GPIOCEN 2
+
+#define RS (1<<8)
+#define RW (1<<9)
+#define E (1<<10)
+
+#define FUNCTION_SET 0x38
+#define DISPLAY_TOGGLE 0x0F
+#define DISPLAY_CLEAR 0x01
+#define ENTRY_MODE_SET 0x06
+
+
+/*
+ * lcdInit()
+ * Initializes the lcd by:
+ * - Setting DB and Control Ports to Outputs
+ * - Turns on clears the display
+ */
+void lcd_init();
+
+/*
+ * lcdClear()
+ * Clears the lcd
+ */
+void lcd_clear();
+
+/*
+ * lcdHome()
+ * Sets the cursor to the home position
+ */
+void lcd_home();
+
+/*
+ * lcdSetPosition()
+ * Sets the cursor to the index passed in (1-32)
+ */
+void lcd_set_position(uint8_t posIndex);
+
+/*
+ * lcdPrintString()
+ *
+ */
+int lcd_print_string(char* str);
+
+/*
+ * lcdPrintChar()
+ *
+ */
+void lcd_print_char(char c);
+
+/*
+ * lcdPrintNum()
+ *
+ */
+int lcd_print_num(int i);
+
+#endif /* LCD_H */