working FET control code using S and R for set/reset

diff --git a/src/fctester-v0.1/ao_fctester.c b/src/fctester-v0.1/ao_fctester.c
index 4e3a1bca15ca443720c7850fb9e3be1fb523045d..4835e68a241ab52d2b8fe9dee9a71ca1af71fcf2 100644 (file)
--- a/src/fctester-v0.1/ao_fctester.c
+++ b/src/fctester-v0.1/ao_fctester.c
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2014 Bdale Garbee <bdale@gag.com>
+ * Copyright © 2024 Bdale Garbee <bdale@gag.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,39 +18,58 @@
 
 #include <ao.h>
 
-uint8_t                fet_output;
+// all FET switches assumed to be on the same port
+int     fets[] = { FET_A, FET_B, FET_C, FET_D, FET_E, FET_F };
 
-// switch fet to selected output, red LED on as a side effect
+int howmanyon = 0;
+
+// switch selected fet to selected state, turn red LED on if any FETs are on
 static void
-ao_fet_control(uint8_t output)
+ao_fet_control(uint32_t output, uint8_t value)
 {
-       switch (output) {
+       switch (value) {
        case 1:
-               ao_led_on(FET_A);
-               ao_led_on(AO_LED_RED);
+               ao_led_on((AO_PORT_TYPE) fets[output]);
+               howmanyon++;
                break;
        default:
-               ao_led_off(FET_A);
-               ao_led_off(AO_LED_RED);
+               ao_led_off((AO_PORT_TYPE) fets[output]);
+               howmanyon--;
        }
+       if (howmanyon) ao_led_on(AO_LED_RED); else ao_led_off(AO_LED_RED);
+}
+
+static void
+ao_fet_on(void)
+{
+       uint32_t output;
+
+       output = ao_cmd_decimal();
+        if (ao_cmd_status != ao_cmd_success)
+                return;
+       if (output > 5)         // can't be less than 0 since unsigned! 
+               printf ("Invalid FET selection %lu, must be 0..5\n", output);
+       else 
+               ao_fet_control(output, 1);
 }
 
 static void
-ao_fet_select(void) 
+ao_fet_off(void)
 {
-       uint8_t output;
+       uint32_t output;
 
-       output = (uint8_t) ao_cmd_decimal();
+       output = ao_cmd_decimal();
         if (ao_cmd_status != ao_cmd_success)
                 return;
-       if (output > 1) 
-               printf ("Invalid fet position %u\n", output);
-       else
-               ao_fet_control(output);
+       if (output > 5)         // can't be less than 0 since unsigned! 
+               printf ("Invalid FET selection %lu, must be 0..5\n", output);
+       else 
+               ao_fet_control(output, 0);
 }
 
 static const struct ao_cmds ao_fet_cmds[] = {
-       { ao_fet_select, "R <output>\0Select fet output" },
+       { ao_fet_on,  "S <output>\0Set (turn on) FET" },
+       { ao_fet_off, "R <output>\0Reset (turn off) FET" },
        { 0, NULL }
 };