diff options
Diffstat (limited to 'tmk_core/protocol')
| -rw-r--r-- | tmk_core/protocol/lufa/adafruit_ble.cpp | 5 |
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 1d8ae1038..505794a80 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 |