From 44bf853e6e71071abfc7d115875a51a046f6d508 Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Thu, 3 Nov 2011 00:57:46 +0100 Subject: stm32-h103 examples: Cosmetic and coding style fixes. --- examples/stm32/f1/stm32-h103/exti_both/exti_both.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) (limited to 'examples/stm32/f1/stm32-h103/exti_both/exti_both.c') diff --git a/examples/stm32/f1/stm32-h103/exti_both/exti_both.c b/examples/stm32/f1/stm32-h103/exti_both/exti_both.c index 7c6f9c7..f842dd5 100644 --- a/examples/stm32/f1/stm32-h103/exti_both/exti_both.c +++ b/examples/stm32/f1/stm32-h103/exti_both/exti_both.c @@ -2,7 +2,7 @@ * This file is part of the libopencm3 project. * * Copyright (C) 2009 Uwe Hermann , - * 2010 Piotr Esden-Tempski + * Copyright (C) 2010 Piotr Esden-Tempski * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -29,7 +29,6 @@ u16 exti_line_state; void clock_setup(void) { rcc_clock_setup_in_hse_8mhz_out_72mhz(); - } void gpio_setup(void) @@ -50,23 +49,23 @@ void exti_setup(void) /* Enable AFIO clock. */ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN); - /* Enable EXTI0 interrupt */ + /* Enable EXTI0 interrupt. */ nvic_enable_irq(NVIC_EXTI0_IRQ); /* Set GPIO0 (in GPIO port A) to 'input float'. */ - gpio_set_mode(GPIOA, GPIO_MODE_INPUT, - GPIO_CNF_INPUT_FLOAT, GPIO0); + gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, GPIO0); - /* configure EXTI subsystem */ + /* Configure the EXTI subsystem. */ exti_select_source(EXTI0, GPIOA); exti_set_trigger(EXTI0, EXTI_TRIGGER_BOTH); exti_enable_request(EXTI0); } -void exti0_isr() +void exti0_isr(void) { exti_line_state = GPIOA_IDR; + /* The LED (PC12) is on, but turns off when the button is pressed. */ if ((exti_line_state & (1 << 0)) != 0) { gpio_clear(GPIOC, GPIO12); } else { @@ -78,15 +77,12 @@ void exti0_isr() int main(void) { - clock_setup(); gpio_setup(); exti_setup(); - /* Blink the LED (PC12) on the board. */ - while (1) { + while (1) __asm("nop"); - } return 0; } -- cgit v1.2.3