diff options
Diffstat (limited to 'software/led_fade/led_fade.c')
| -rw-r--r-- | software/led_fade/led_fade.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/software/led_fade/led_fade.c b/software/led_fade/led_fade.c index 3c7b8c8..9b50eda 100644 --- a/software/led_fade/led_fade.c +++ b/software/led_fade/led_fade.c @@ -68,11 +68,14 @@ static void _puts(const char * s) { int main (void){ - // Run off 16 MHz Crystal for accuracy. + // Make sure the HFROSC is on before the next line: + PRCI_REG(PRCI_HFROSCCFG) |= ROSC_EN(1); + // Run off 16 MHz Crystal for accuracy. Note that the + // first line is PRCI_REG(PRCI_PLLCFG) = (PLL_REFSEL(1) | PLL_BYPASS(1)); PRCI_REG(PRCI_PLLCFG) |= (PLL_SEL(1)); // Turn off HFROSC to save power - PRCI_REG(PRCI_HFROSCCFG) = 0; + PRCI_REG(PRCI_HFROSCCFG) &= ~(ROSC_EN(1)); // Configure UART to print GPIO_REG(GPIO_OUTPUT_VAL) |= IOF0_UART0_MASK; |