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Diffstat (limited to 'tmk_core/protocol/lufa/adafruit_ble.cpp')
-rw-r--r--tmk_core/protocol/lufa/adafruit_ble.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/tmk_core/protocol/lufa/adafruit_ble.cpp b/tmk_core/protocol/lufa/adafruit_ble.cpp
index 1d8ae1038b..505794a80c 100644
--- a/tmk_core/protocol/lufa/adafruit_ble.cpp
+++ b/tmk_core/protocol/lufa/adafruit_ble.cpp
@@ -151,9 +151,10 @@ static struct SPI_Settings spi;
// Initialize 4Mhz MSBFIRST MODE0
void SPI_init(struct SPI_Settings *spi) {
spi->spcr = _BV(SPE) | _BV(MSTR);
+#if F_CPU == 8000000
+ // For MCUs running at 8MHz (such as Feather 32U4, or 3.3V Pro Micros) we set the SPI doublespeed bit
spi->spsr = _BV(SPI2X);
-
- static_assert(SpiBusSpeed == F_CPU / 2, "hard coded at 4Mhz");
+#endif
ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
// Ensure that SS is OUTPUT High