Meira updates for bluetooth and audio (#2731)

[qmk_firmware.git] / keyboards / meira / promicro / rules.mk

diff --git a/keyboards/meira/promicro/rules.mk b/keyboards/meira/promicro/rules.mk
index 3c81f1b344a1023e0ccdd93b2d719b50feba178b..22e49971f1cdf37d99cda327a839565aacdd7b73 100644 (file)
--- a/keyboards/meira/promicro/rules.mk
+++ b/keyboards/meira/promicro/rules.mk
@@ -1 +1,14 @@
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
 BLUETOOTH_ENABLE = no