initial_pins: Add ability to configure output pins at mcu startup

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2019-03-17 20:41:52 -04:00
parent 0af89e4766
commit 4a35f927fc
5 changed files with 103 additions and 4 deletions
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -88,6 +88,15 @@ config STEP_DELAY
        The default for AVR is -1, for all other micro-controllers it
        is 2us.

+config INITIAL_PINS
+    string "GPIO pins to set at micro-controller startup"
+    depends on LOW_LEVEL_OPTIONS
+    help
+        One may specify a comma separated list of gpio pins to set
+        during the micro-controller startup sequence. By default the
+        pins will be set to output high - preface a pin with a '!'
+        character to set that pin to output low.
+
 # The HAVE_GPIO_x options allow boards to disable support for some
 # commands if the hardware does not support the feature.
 config HAVE_GPIO