Added testing app

final_project/312_final.code-workspace

@@ -5,12 +5,19 @@
 		},
 		{
 			"path": "lcd_disp"
+		},
+		{
+			"path": "testing"
 		}
 	],
 	"settings": {
 		"files.associations": {
 			"io.h": "c",
-			"interrupt.h": "c"
+			"interrupt.h": "c",
+			"periph.h": "c",
+			"comms.h": "c",
+			"string.h": "c",
+			"main.h": "c"
 		}
 	}
 }

final_project/testing/.vscode/c_cpp_properties.json

@@ -0,0 +1,19 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "intelliSenseMode": "gcc-x64",
+            "compilerPath": "/usr/lib/ccache/avr-gcc",
+            "cStandard": "c99",
+            "cppStandard": "c++17",
+            "compilerArgs": [
+                "-Wall", "-pedantic", "-mmcu=atmega328"
+            ],
+            "defines": [
+                "F_CPU=16000000",
+                "__"
+            ]
+        }
+    ],
+    "version": 4
+}

final_project/testing/.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "C_Cpp.intelliSenseEngine": "Tag Parser"
+}

final_project/testing/.vscode/tasks.json

@@ -0,0 +1,19 @@
+{
+  // See https://go.microsoft.com/fwlink/?LinkId=733558
+  // for the documentation about the tasks.json format
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "make",
+      "type": "shell",
+      "command": "make",
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": [
+        "$gcc"
+      ]
+    }
+  ]
+}

final_project/testing/Makefile

@@ -0,0 +1,52 @@
+
+NAME := sd-reader
+HEX := $(NAME).hex
+OUT := $(NAME).out
+MAP := $(NAME).map
+SOURCES := $(wildcard *.c)
+HEADERS := $(wildcard *.h)
+OBJECTS := $(patsubst %.c,%.o,$(SOURCES))
+
+MCU := atmega328
+MCU_AVRDUDE := m328
+MCU_FREQ := 8000000UL
+
+CC := avr-gcc
+OBJCOPY := avr-objcopy
+SIZE := avr-size -A
+DOXYGEN := doxygen
+
+CFLAGS := -Werror -Wall -pedantic -mmcu=$(MCU) -std=c99 -g -Os -DF_CPU=$(MCU_FREQ)
+
+all: $(HEX)
+
+clean:
+	rm -f $(HEX) $(OUT) $(MAP) $(OBJECTS)
+	rm -rf doc/html
+
+flash: $(HEX)
+	avrdude -y -c avr910 -p $(MCU_AVRDUDE) -U flash:w:$(HEX)
+
+$(HEX): $(OUT)
+	$(OBJCOPY) -R .eeprom -O ihex $< $@
+
+$(OUT): $(OBJECTS)
+	$(CC) $(CFLAGS) -o $@ -Wl,-Map,$(MAP) $^
+	@echo
+	@$(SIZE) $@
+	@echo
+
+%.o: %.c $(HEADERS)
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+%.pp: %.c
+	$(CC) $(CFLAGS) -E -o $@ $<
+
+%.ppo: %.c
+	$(CC) $(CFLAGS) -E $<
+
+doc: $(HEADERS) $(SOURCES) Doxyfile
+	$(DOXYGEN) Doxyfile
+
+.PHONY: all clean flash doc
+

final_project/testing/comms.h

@@ -0,0 +1,97 @@
+#ifndef COMMS_H_
+#define COMMS_H_
+
+#include <avr/io.h>
+#include <string.h>
+
+#ifdef __AVR_ATmega328P__
+    #define MEGA328
+#endif
+#ifdef __AVR_ATtiny2313__
+    #define TINY2313
+#endif
+
+/**
+ * Our format goes like this:
+ * 
+ * 1 byte command, with data after
+ */
+
+
+typedef enum {
+    COMMS_CMD_CLR = 0U,         //! Clears LCD and all file names
+    COMMS_CMD_NUM,              //! sends the total number of songs to choose from
+    COMMS_CMD_QUERY_NAME,       //! Queries for the name of a given song ID
+    COMMS_CMD_REPLY_NAME,       //! Responds with the name of the given song ID
+    COMMS_CMD_SELECT_FILE,      //! selects a file from the given list to play, data is 1 byte for id
+    COMMS_CMD_PLAY,             //! Starts playing file
+    COMMS_CMD_PAUSE             //! pauses playing file
+} comms_cmd_t;
+
+/** @brief Inline function to send commands and values.
+ */
+inline void comms_send(comms_cmd_t cmd) {
+    #ifdef MEGA328
+    while (! (UCSR0A & (1 << TXC0)));
+    UDR0 = cmd;
+    #elif defined(TINY2313)
+    while (! (UCSRA) & (1 << TXC))
+    UDR = cmd;
+    #endif
+}
+
+/** @brief Sends the number of songs to play
+ */
+inline void comms_send_num(uint8_t num) {
+    comms_send(COMMS_CMD_NUM);
+    comms_send(num);
+}
+
+/** @brief Selects a file from the list on the DAC side.
+ * 
+ * If another song is playing, this will stop
+ * that song from playing and select the new one.
+ */
+inline void comms_select_file(uint8_t id) {
+    comms_send(COMMS_CMD_SELECT_FILE);
+    comms_send((comms_cmd_t) id);
+}
+
+/** @brief Queries for the name of the given song ID.
+ */
+inline void comms_query_name(uint8_t id) {
+    comms_send(COMMS_CMD_QUERY_NAME);
+    comms_send(id);
+}
+
+/** @brief Replies with name of song
+ */
+inline void comms_reply_name(char* name) {
+    comms_send(COMMS_CMD_REPLY_NAME);
+
+    uint8_t len = strlen(name);
+    comms_send(len);
+    for (uint8_t i = 0; i < len; i++) {
+        comms_send(name[i]);
+    }
+}
+
+/** @brief Clears the LCD list of files.
+ */
+inline void comms_clear() {
+    comms_send(COMMS_CMD_CLR);
+}
+
+/** @brief Starts playing song.
+ */
+inline void comms_play() {
+    comms_send(COMMS_CMD_PLAY);
+}
+
+/** @brief Pauses playing song.
+ */
+inline void comms_pause() {
+    comms_send(COMMS_CMD_PLAY);
+}
+
+#endif

final_project/testing/main.c

@@ -0,0 +1,42 @@
+#include "comms.h"
+#include <util/delay.h>
+
+
+#define USART_BAUDRATE 9600     //! USART baudrate, change this to set it.
+#define UBRR_VALUE (((F_CPU/(USART_BAUDRATE*16UL)))-1)
+
+char* song_names[3] = {
+    "baila.wav",
+    "giorno.wav",
+    "nevergonnagiveyo"
+};
+
+int main() {
+    // initialize USART
+	UBRR0L = UBRR_VALUE & 255; 
+	UBRR0H = UBRR_VALUE >> 8;
+	UCSR0B = (1 << TXEN0) | (1 << RXEN0); // fire-up USART
+	UCSR0C = (1 << UCSZ01) | (1 << UCSZ00); // fire-up USART
+
+    while(1) {
+        // Send a clear command
+        comms_clear();
+        _delay_ms(1000);
+
+        // send a number of songs
+        comms_send_num(3);
+
+        // Wait for request, get song num, then send song info 3 times
+        for (uint8_t i = 0; i < 3; i++) {
+            while(! (UCSR0A & (1 << TXC0)));
+            uint8_t in_song =  UDR0;
+            while(! (UCSR0A & (1 << TXC0)));
+            in_song =  UDR0;
+            comms_reply_name(song_names[in_song]);
+        }
+
+        // wait a while
+        _delay_ms(20000);
+
+    }
+}