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use documents globals

This commit is contained in:
King Kévin 2016-08-14 20:30:16 +02:00
parent 51330747e2
commit 5b68c5701e
1 changed files with 60 additions and 29 deletions
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89
global.h
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@ -12,52 +12,83 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* Copyright (c) 2016 King Kévin <kingkevin@cuvoodoo.info> */
/** global definitions and methods
* @file global.h
* @author King Kévin <kingkevin@cuvoodoo.info>
* @date 2016
*/
#pragma once
#include <libopencm3/stm32/gpio.h> // GPIO defines
#include <libopencm3/cm3/nvic.h> // interrupt defines
#include <libopencm3/stm32/exti.h> // external interrupt defines
/* get the length of an array */
/** get the length of an array */
#define LENGTH(x) (sizeof(x) / sizeof((x)[0]))
/* LED pin */
/** @defgroup board_led board LED GPIO
* @{
*/
#if defined(SYSTEM_BOARD)
/* on system board LED is on pin 11/PA1 */
#define LED_RCC RCC_GPIOA
#define LED_PORT GPIOA
#define LED_PIN GPIO1
#define LED_RCC RCC_GPIOA /**< GPIO peripheral clock (port A on system board) */
#define LED_PORT GPIOA /**< GPIO port (port A on system board) */
#define LED_PIN GPIO1 /**< GPIO pin (pin PA1 on system board) */
#elif defined(BLUE_PILL)
/* on minimum system LED is on pin 2/PC13 */
#define LED_RCC RCC_GPIOC
#define LED_PORT GPIOC
#define LED_PIN GPIO13
#define LED_RCC RCC_GPIOC /**< GPIO peripheral clock (port C on blue pill) */
#define LED_PORT GPIOC /**< GPIO port (port C on blue pill) */
#define LED_PIN GPIO13 /**< GPIO pin (pin PC13 on system board) */
#elif defined (MAPLE_MINI)
/* on maple mini LED is on pin 19/PB1 */
#define LED_RCC RCC_GPIOB
#define LED_PORT GPIOB
#define LED_PIN GPIO1
#define LED_RCC RCC_GPIOB /**< GPIO peripheral clock (port B on maple mini) */
#define LED_PORT GPIOB /**< GPIO port (port B on maple mini) */
#define LED_PIN GPIO1 /**< GPIO pin (pin PB1 on maple mini) */
#endif
/** @} */
/* user button */
/** @defgroup board_button board user button GPIO
* @{
*/
#if defined(MAPLE_MINI)
/* on maple mini button is on 32/PB8 */
#define BUTTON_RCC RCC_GPIOB
#define BUTTON_PORT GPIOB
#define BUTTON_PIN GPIO8
#define BUTTON_EXTI EXTI8
#define BUTTON_IRQ NVIC_EXTI9_5_IRQ
#define BUTTON_ISR exti9_5_isr
/* on maple mini user button is on 32/PB8 */
#define BUTTON_RCC RCC_GPIOB /**< GPIO peripheral clock */
#define BUTTON_PORT GPIOB /**< GPIO port */
#define BUTTON_PIN GPIO8 /**< GPIO pin */
#define BUTTON_EXTI EXTI8 /**< GPIO external interrupt */
#define BUTTON_IRQ NVIC_EXTI9_5_IRQ /**< GPIO line interrupt (interrupt for line 9 to 5 for pin) */
#define BUTTON_ISR exti9_5_isr /**< GPIO line interrupt service routine (isr for line 9 to 5 for pin 8) */
#endif
/** @} */
/* switch on LED */
void led_on(void);
/* switch off LED */
void led_off(void);
/* toggle LED */
void led_toggle(void);
/* default output (i.e. for printf) */
/** switch on board LED */
inline void led_on(void)
{
#if defined(SYSTEM_BOARD) || defined(BLUE_PILL)
gpio_clear(LED_PORT, LED_PIN);
#elif defined(MAPLE_MINI)
gpio_set(LED_PORT, LED_PIN);
#endif
}
/** switch off board LED */
inline void led_off(void)
{
#if defined(SYSTEM_BOARD) || defined(BLUE_PILL)
gpio_set(LED_PORT, LED_PIN);
#elif defined(MAPLE_MINI)
gpio_clear(LED_PORT, LED_PIN);
#endif
}
/** toggle board LED */
inline void led_toggle(void)
{
gpio_toggle(LED_PORT, LED_PIN);
}
/** default printf output */
int _write(int file, char *ptr, int len);
/* print binary as string */
char* b2s(uint32_t binary, uint8_t rjust);
/** get binary representation of a number
* @param[in] binary number to represent in binary
* @param[in] rjust justify representation with leading zeros
* @return string with binary representation of the number
*/
char* b2s(uint64_t binary, uint8_t rjust);