From 7f1e75c3a8f7bd4accdbf88a127b24d87131e617 Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Sun, 13 Nov 2011 09:13:27 +0100 Subject: other/*: Random coding-style fixes. --- examples/stm32/f1/other/timer_interrupt/timer.c | 36 ++++++++++++------------- 1 file changed, 18 insertions(+), 18 deletions(-) (limited to 'examples/stm32/f1/other/timer_interrupt/timer.c') diff --git a/examples/stm32/f1/other/timer_interrupt/timer.c b/examples/stm32/f1/other/timer_interrupt/timer.c index 422df88..b523503 100644 --- a/examples/stm32/f1/other/timer_interrupt/timer.c +++ b/examples/stm32/f1/other/timer_interrupt/timer.c @@ -35,51 +35,51 @@ void gpio_setup(void) GPIO_CNF_OUTPUT_PUSHPULL, GPIO7); } -void nvic_setup() +void nvic_setup(void) { - /* without this the timer interrupt routine will never be called */ + /* Without this the timer interrupt routine will never be called. */ nvic_enable_irq(NVIC_TIM2_IRQ); - nvic_set_priority(NVIC_TIM2_IRQ, 1); + nvic_set_priority(NVIC_TIM2_IRQ, 1); } -void tim2_isr() +void tim2_isr(void) { - /* LED2 on/off */ - gpio_toggle(GPIOB, GPIO6); - - /* clear interrrupt flag */ - TIM_SR(TIM2) &= ~TIM_SR_UIF; + gpio_toggle(GPIOB, GPIO6); /* LED2 on/off. */ + TIM_SR(TIM2) &= ~TIM_SR_UIF; /* Clear interrrupt flag. */ } int main(void) { - rcc_clock_setup_in_hse_16mhz_out_72mhz(); + rcc_clock_setup_in_hse_16mhz_out_72mhz(); gpio_setup(); nvic_setup(); gpio_clear(GPIOB, GPIO7); /* LED1 on */ gpio_set(GPIOB, GPIO6); /* LED2 off */ - + rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_TIM2EN); - /* the goal is to let the LED2 glow for a second and then be off for a second */ + /* + * The goal is to let the LED2 glow for a second and then be + * off for a second. + */ - /* Set timer start value */ + /* Set timer start value. */ TIM_CNT(TIM2) = 1; - /* Set timer prescaler. 72MHz/1440 => 50000 counts per second */ + /* Set timer prescaler. 72MHz/1440 => 50000 counts per second. */ TIM_PSC(TIM2) = 1440; - /* End timer value. If this value is reached an interrupt is generated */ + /* End timer value. If this is reached an interrupt is generated. */ TIM_ARR(TIM2) = 50000; - /* Update interrupt enable */ + /* Update interrupt enable. */ TIM_DIER(TIM2) |= TIM_DIER_UIE; - /* Start timer */ + /* Start timer. */ TIM_CR1(TIM2) |= TIM_CR1_CEN; - while(1); /* Halt. */ + while (1); /* Halt. */ return 0; } -- cgit v1.2.3