scopes: Adapt/fix some code comments, cosmetics.

[sigrok-firmware-fx2lafw.git] / hantek_6022be.c

diff --git a/hantek_6022be.c b/hantek_6022be.c
index 91a959e24439cd7705e21e2f4ad62bf3e8a70d2d..232237eb1296b2147222d5c9db271450f4ce460d 100644 (file)
--- a/hantek_6022be.c
+++ b/hantek_6022be.c
@@ -66,7 +66,9 @@ 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. */
        PA7 = !PA7;
+
        if (ledcounter) {
                if (--ledcounter == 0) {
                        /* Clear LED. */
@@ -74,6 +76,7 @@ void timer2_isr(void) __interrupt TF2_ISR
                        PC1 = 1;
                }
        }
+
        TF2 = 0;
 }
 
@@ -247,16 +250,18 @@ static BOOL set_samplerate(BYTE rate)
 
        /*
         * The program for low-speed, e.g. 1 MHz, is:
-        * wait 24, CTL2=0, FIFO
-        * wait 23, CTL2=1
-        * jump 0, CTL2=1
+        * wait 24, CTLx=0, FIFO
+        * wait 23, CTLx=1
+        * jump 0, CTLx=1
         *
         * The program for 24 MHz is:
-        * wait 1, CTL2=0, FIFO
-        * jump 0, CTL2=1
+        * wait 1, CTLx=0, FIFO
+        * jump 0, CTLx=1
         *
         * The program for 30/48 MHz is:
-        * jump 0, CTL2=Z, FIFO, LOOP
+        * jump 0, CTLx=Z, FIFO, LOOP
+        *
+        * (CTLx is device-dependent, could be e.g. CTL0 or CTL2.)
         */
 
        /* LENGTH / BRANCH 0-7 */
@@ -442,7 +447,7 @@ static void main(void)
                        dosuspend = FALSE;
                        do {
                                /* Make sure ext wakeups are cleared. */
-                               WAKEUPCS |= bmWU|bmWU2;
+                               WAKEUPCS |= bmWU | bmWU2;
                                SUSPEND = 1;
                                PCON |= 1;
                                __asm