diff options
Diffstat (limited to 'system-clock/src/main.c')
| -rw-r--r-- | system-clock/src/main.c | 34 |
1 files changed, 11 insertions, 23 deletions
diff --git a/system-clock/src/main.c b/system-clock/src/main.c index da4afd0..39f4a80 100644 --- a/system-clock/src/main.c +++ b/system-clock/src/main.c @@ -1,8 +1,9 @@ #include "gpio.h" #include "delay.h" #include "clock.h" +#include "spin.h" -volatile uint32_t delay_amt = 65535; +volatile uint32_t delay_amt = 20000000 / 4; /* Main function. This gets executed from the interrupt vector defined above. */ int main() @@ -14,35 +15,22 @@ int main() gpio_output_pin_t pin1 = set_gpio_pin_output(port_b, PIN_1); /* Enable a higher clock frequency. */ - set_sys_clock(); + set_system_clock_MHz(80); + uint32_t count = 0; while(1) { /* Set the GPIO pin to high. */ - pin_on(pin3); pin_off(pin1); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); + pin_off(pin3); delay(delay_amt); /* Set the GPIO pin to low. */ - pin_off(pin3); - pin_on(pin1); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); - delay(delay_amt); + if (count % 4 == 0) { + pin_on(pin1); + } + pin_on(pin3); delay(delay_amt); + + ++ count; } } |