X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=fx2%2Ffx2.c;h=aa8d4cbdcaee79318c4df015192418fdee587de0;hb=b2ba08089cf51703bbf546f3171a3aeaef6b450f;hp=ddea7340199b2e948666bdc886812fc5c5def410;hpb=a202fa20f103558b6e86400c60f9bc33fae2e576;p=my-code%2Ffpga.git

diff --git a/fx2/fx2.c b/fx2/fx2.c
index ddea734..aa8d4cb 100644
--- a/fx2/fx2.c
+++ b/fx2/fx2.c
@@ -22,8 +22,8 @@ typedef unsigned short u16;
 typedef unsigned int u32;
 
 /* fx2 register */
-xdata at 0xb5 volatile u8 OED;
-xdata at 0xb0 volatile u8 IOD;
+sfr at 0xb5 OED;
+sfr at 0xb0 IOD;
 
 void power_on() {
 
@@ -31,10 +31,51 @@ void power_on() {
 	IOD|=(1<<7);
 }
 
-void main() {
+void slave_fifo_init() {
+
+	/* set bit 0 and 1 - fifo slave config */	
+	IFCONFIG|=0x03;
+
+	/* async mode */
+	IFCONFIG|=0x04;
+
+	/* 8 bit fifo to all endpoints */
+	EP2FIFOCFG&=^(1<<0);
+	EP4FIFOCFG&=^(1<<0);
+	EP6FIFOCFG&=^(1<<0);
+	EP8FIFOCFG&=^(1<<0);
+
+	/* default indexed flag configuration:
+	 *
+	 * flag a: programmable level
+	 * flag b: full
+	 * flag c: empty
+	 *
+	 * todo: -> fixed configuration
+	 */
+
+
+}
+
+void fx2_init() {
+
+	/* swicth on power */
+	power_on();
+
+	/* slave fifo init */
+	slave_fifo_init();
 
-	power_on;
 }
 
+void main() {
+
+	/* initialize the fx2 */
+	fx2_init();
 
+	/* do the job ... */
+	while(1) {
 	
+	}
+
+}
+