From fc04ca30169f7a89616bdbc16d111ce951200f62 Mon Sep 17 00:00:00 2001
From: Javier Degirolmo
Date: Thu, 28 Jun 2012 10:11:45 -0300
Subject: Added C devkit :o and some instructions for which files you have to
 use depending whether you want the asm or C devkit

---
 c/echo.h | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 c/echo.h

(limited to 'c/echo.h')

diff --git a/c/echo.h b/c/echo.h
new file mode 100644
index 0000000..526e24e
--- /dev/null
+++ b/c/echo.h
@@ -0,0 +1,42 @@
+#ifndef ECHO_H
+#define ECHO_H
+
+/*
+ * Macros used to define instrument lists
+ * Yeah, this thing is a mess
+ */
+#define ECHO_LIST_START(name) \
+   static const unsigned char name[] = {
+#define ECHO_LIST_ENTRY(addr) \
+   ((unsigned long)(addr) >> 8 & 0x7F) | 0x80, \
+   (unsigned long)(addr) & 0xFF, \
+   ((unsigned long)(addr) >> 15 & 0x7F) | \
+   ((unsigned long)(addr) >> 16 & 0x80)),
+#define ECHO_LIST_END \
+   0x00 };
+
+/* Echo commands */
+enum {
+   ECHO_CMD_NONE,          /* 0x00 - No command */
+   ECHO_CMD_LOADLIST,      /* 0x01 - Load instrument list */
+   ECHO_CMD_PLAYSFX,       /* 0x02 - Play a SFX */
+   ECHO_CMD_STOPSFX,       /* 0x03 - Stop SFX playback */
+   ECHO_CMD_PLAYBGM,       /* 0x04 - Play a BGM */
+   ECHO_CMD_STOPBGM        /* 0x05 - Stop BGM playback */
+};
+
+/* Echo status flags */
+#define ECHO_STAT_BGM      0x0001   /* Background music is playing */
+#define ECHO_STAT_SFX      0x0002   /* Sound effect is playing */
+#define ECHO_STAT_BUSY     0x8000   /* Echo still didn't parse command */
+
+/* Function prototypes */
+void echo_play_bgm(const void *);
+void echo_stop_bgm(void);
+void echo_play_sfx(const void *);
+void echo_stop_sfx(void);
+unsigned short echo_get_status(void);
+void echo_send_command(unsigned char);
+void echo_send_command_ex(unsigned char, const void *);
+
+#endif
-- 
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