scopes: Factor out LED_CLEAR(), LED_GREEN(), LED_RED().

[sigrok-firmware-fx2lafw.git] / sainsmart_dds120.c

diff --git a/sainsmart_dds120.c b/sainsmart_dds120.c
index a2867e5c52340bfd578f287bc5e99bf4b6ece1f5..1ea478087ed6307841057356e7feb6626b7c25c4 100644 (file)
--- a/sainsmart_dds120.c
+++ b/sainsmart_dds120.c
@@ -24,9 +24,21 @@
 #include <delay.h>
 #include <setupdat.h>
 
+#define SET_ANALOG_MODE() PA7 = 1
+
+/* Toggle the 1kHz calibration pin, only accurate up to ca. 8MHz. */
+/* Note: There's no PE2 as IOE is not bit-addressable (see TRM 15.2). */
+#define TOGGLE_CALIBRATION_PIN() IOE = IOE ^ 0x04
+
+#define LED_CLEAR() NOP
+#define LED_GREEN() NOP
+#define LED_RED()   NOP
+
 /* Change to support as many interfaces as you need. */
 static BYTE altiface = 0;
 
+static volatile WORD ledcounter = 0;
+
 static volatile __bit dosud = FALSE;
 static volatile __bit dosuspend = FALSE;
 
@@ -64,8 +76,11 @@ void suspend_isr(void) __interrupt SUSPEND_ISR
 
 void timer2_isr(void) __interrupt TF2_ISR
 {
-       /* Toggle the 1kHz calibration pin, only accurate up to ca. 8MHz. */
-       IOE = IOE^0x04;
+       TOGGLE_CALIBRATION_PIN();
+
+       if (ledcounter && (--ledcounter == 0))
+               LED_CLEAR();
+
        TF2 = 0;
 }
 
@@ -208,6 +223,8 @@ static void start_sampling(void)
 {
        int i;
 
+       SET_ANALOG_MODE();
+
        clear_fifo();
 
        for (i = 0; i < 1000; i++);
@@ -221,6 +238,9 @@ static void start_sampling(void)
        GPIFTCB0 = 0;
        GPIFTRIG = (altiface == 0) ? 6 : 4;
 
+       /* Set green LED, don't clear LED afterwards (ledcounter = 0). */
+       LED_GREEN();
+       ledcounter = 0;
 }
 
 static void select_interface(BYTE alt)
@@ -421,6 +441,10 @@ BOOL handle_vendorcommand(BYTE cmd)
 {
        stop_sampling();
 
+       /* Set red LED, clear after timeout. */
+       LED_RED();
+       ledcounter = 1000;
+
        /* Clear EP0BCH/L for each valid command. */
        if (cmd >= 0xe0 && cmd <= 0xe6) {
                EP0BCH = 0;
@@ -459,6 +483,8 @@ static void init(void)
        EP4CFG = 0;
        EP8CFG = 0;
 
+       SET_ANALOG_MODE();
+
        /* In idle mode tristate all outputs. */
        GPIFIDLECTL = 0x00; /* Don't enable CTL0-5 outputs. */
        GPIFCTLCFG = 0x80; /* TRICTL=1. CTL0-2: CMOS outputs, tri-statable. */
@@ -509,7 +535,7 @@ static void main(void)
        OEC = 0xff;
        OEA = 0x80;
 
-       PA7 = 1;
+       SET_ANALOG_MODE();
 
        while (TRUE) {
                if (dosud) {