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| author |  fauxpark <fauxpark@gmail.com> | 2019-09-08 01:18:05 +1000 |
|---|---|---|
| committer |  Drashna Jaelre <drashna@live.com> | 2019-09-07 08:18:05 -0700 |
| commit | 0d94730da05c9ba1375357cebedd54648463b0b8 (patch) | |
| tree | 06af62ba84cede4776855cbac4abaa0007838dc2 /tmk_core/protocol | |
| parent | 91bd2117df4cc4d2be6c840103614f2245e54bd1 (diff) | |
| download | qmk_firmware-0d94730da05c9ba1375357cebedd54648463b0b8.tar.gz | |
Adafruit BLE: Set SPI2X bit only when F_CPU is 8MHz (#6671)
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 |