X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=fx2lafw.c;h=1949a7c1fecfd46769cab5ff86947a3b9e6dac26;hb=cf43e09a111d7d6bf482521149bd33d85947dede;hp=45368cf2909fd5eea64fa11d83d44cfd01285581;hpb=d67ced51c6900f948c5e1ff13d30d6aa90cb1300;p=sigrok-firmware-fx2lafw.git

diff --git a/fx2lafw.c b/fx2lafw.c
index 45368cf2..1949a7c1 100644
--- a/fx2lafw.c
+++ b/fx2lafw.c
@@ -38,6 +38,7 @@
 
 #include <fx2regs.h>
 #include <fx2macros.h>
+#include <fx2ints.h>
 #include <delay.h>
 #include <setupdat.h>
 #include <eputils.h>
@@ -50,6 +51,10 @@
 volatile __bit got_sud;
 BYTE vendor_command;
 
+volatile WORD ledcounter = 1000;
+
+extern __bit gpif_acquiring;
+
 static void setup_endpoints(void)
 {
 	/* Setup EP2 (IN). */
@@ -208,6 +213,20 @@ void hispeed_isr(void) __interrupt HISPEED_ISR
 	CLEAR_HISPEED();
 }
 
+void timer2_isr(void) __interrupt TF2_ISR
+{
+	/* Blink LED during acquisition, keep it on otherwise. */
+	if (gpif_acquiring) {
+		if (--ledcounter == 0) {
+			PA1 = !PA1;
+			ledcounter = 1000;
+		}
+	} else {
+		PA1 = 1; /* LED on. */
+	}
+	TF2 = 0;
+}
+
 void fx2lafw_init(void)
 {
 	/* Set DYN_OUT and ENH_PKT bits, as recommended by the TRM. */
@@ -229,6 +248,18 @@ void fx2lafw_init(void)
 	ENABLE_HISPEED();
 	ENABLE_USBRESET();
 
+	/* PA1 (LED) is an output. */
+	PORTACFG = 0;
+	OEA = (1 << 1);
+	PA1 = 1; /* LED on. */
+
+	/* Init timer2. */
+	RCAP2L = -500 & 0xff;
+	RCAP2H = (-500 & 0xff00) >> 8;
+	T2CON = 0;
+	ET2 = 1;
+	TR2 = 1;
+
 	/* Global (8051) interrupt enable. */
 	EA = 1;