diff options
| author | fauxpark <fauxpark@gmail.com> | 2019-09-08 01:18:05 +1000 |
|---|---|---|
| committer | Florian Didron <fdidron@users.noreply.github.com> | 2019-10-01 10:21:12 +0900 |
| commit | abc9586c2a6f6411eb086988d004b68e21199e98 (patch) | |
| tree | 53541da4f922f2b2c6cd7b3cf7738ce61b6e07e4 /tmk_core | |
| parent | cd7aba09ee55ea72b4960c2583ca94f8d34c88a7 (diff) | |
Adafruit BLE: Set SPI2X bit only when F_CPU is 8MHz (#6671)
Diffstat (limited to 'tmk_core')
| -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 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 |