diff options
Diffstat (limited to 'src/lpc176x/spi.c')
| -rw-r--r-- | src/lpc176x/spi.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/lpc176x/spi.c b/src/lpc176x/spi.c index 92e303d0..8373a39f 100644 --- a/src/lpc176x/spi.c +++ b/src/lpc176x/spi.c @@ -23,6 +23,9 @@ spi_init(void) gpio_peripheral(0, 17, 2, 0); gpio_peripheral(0, 18, 2, 0); + // Setup clock + enable_peripheral_clock(PCLK_SSP0); + // Set initial registers LPC_SSP0->CR0 = 0x07; LPC_SSP0->CPSR = 254; @@ -40,7 +43,7 @@ spi_setup(uint32_t bus, uint8_t mode, uint32_t rate) // Setup clock rate and mode struct spi_config res = {0, 0}; - uint32_t pclk = SystemCoreClock / 4; + uint32_t pclk = SystemCoreClock; uint32_t div = DIV_ROUND_UP(pclk/2, rate) << 1; res.cpsr = div < 2 ? 2 : (div > 254 ? 254 : div); res.cr0 = 0x07 | (mode << 6); |