H-bridge period limit documentation added

diff --git a/commands/cmd_hbr.c b/commands/cmd_hbr.c
index 3691ffe3e0f98085942f0cbbf0bade6ef0f99e44..fefd72ffc7a619d4e8740e926bb11fbe60f6474b 100644 (file)
--- a/commands/cmd_hbr.c
+++ b/commands/cmd_hbr.c
@@ -130,8 +130,9 @@ cmd_des_t const cmd_des_hbr_enable = {
     "the H-bridge chip is set, the watchdog reset task is started and the\n"
     "PWM is configured with the specified period and duty cycle 0%.\n"
     "\n"
-    "If the period is lower than one, the default frequency of 18kHz is\n"
-    "used instead. This command should be called before any other command\n"
+    "If the period is zero, the default frequency of 18kHz is\n"
+    "used instead. Minimum period is 50. This command should be\n"
+    "called before any other command\n"
     "starting with hbr is used. If H-bridge is already enabled, an error is\n"
     "printed.\n"
     "\n"