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boards/stm32f0discovery: unified LED defines

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This commit is contained in:
Hauke Petersen 2016-03-11 18:04:27 +01:00
parent 047050d032
commit 7b1208a935
2 changed files with 16 additions and 56 deletions
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37
boards/stm32f0discovery/board.c
View File

@ -19,45 +19,14 @@
*/ */
#include "board.h" #include "board.h"
#include "periph/uart.h" #include "periph/gpio.h"
static void leds_init(void);
void board_init(void) void board_init(void)
{ {
/* initialize the boards LEDs */ /* initialize the boards LEDs */
leds_init(); gpio_init(LED0_PIN, GPIO_DIR_OUT, GPIO_NOPULL);
gpio_init(LED1_PIN, GPIO_DIR_OUT, GPIO_NOPULL);
/* initialize the CPU */ /* initialize the CPU */
cpu_init(); cpu_init();
} }
/**
* @brief Initialize the boards on-board LEDs (LD3 and LD4)
*
* The LED initialization is hard-coded in this function. As the LEDs are soldered
* onto the board they are fixed to their CPU pins.
*
* The LEDs are connected to the following pins:
* - LD3: PC8
* - LD4: PC9
*/
void leds_init(void)
{
/* enable clock for port GPIOC */
RCC->AHBENR |= RCC_AHBENR_GPIOCEN;
/* set output speed to 50MHz */
LED_PORT->OSPEEDR |= 0x000f0000;
/* set output type to push-pull */
LED_PORT->OTYPER &= ~(0x00000300);
/* configure pins as general outputs */
LED_PORT->MODER &= ~(0x000f0000);
LED_PORT->MODER |= 0x00050000;
/* disable pull resistors */
LED_PORT->PUPDR &= ~(0x000f0000);
/* turn all LEDs off */
LED_PORT->BRR = 0x0300;
}

35
boards/stm32f0discovery/include/board.h
View File

@ -27,33 +27,24 @@
extern "C" { extern "C" {
#endif #endif
/**
* @name LED pin definitions
* @{
*/
#define LED_PORT GPIOC
#define LD3_PIN (1 << 9)
#define LD4_PIN (1 << 8)
/** @} */
/** /**
* @name Macros for controlling the on-board LEDs. * @name Macros for controlling the on-board LEDs.
* @{ * @{
*/ */
#define LD3_ON (LED_PORT->BSRR = LD3_PIN) #define LED0_PIN GPIO_PIN(PORT_C, 9)
#define LD3_OFF (LED_PORT->BSRR = (LD3_PIN << 16)) #define LED1_PIN GPIO_PIN(PORT_C, 8)
#define LD3_TOGGLE (LED_PORT->ODR ^= LD3_PIN)
#define LD4_ON (LED_PORT->BSRR = LD4_PIN)
#define LD4_OFF (LED_PORT->BSRR = (LD4_PIN << 16))
#define LD4_TOGGLE (LED_PORT->ODR ^= LD4_PIN)
/* for compatibility to other boards */ #define LED_PORT GPIOC
#define LED_GREEN_ON LD3_ON #define LED0_MASK (1 << 9)
#define LED_GREEN_OFF LD3_OFF #define LED1_MASK (1 << 8)
#define LED_GREEN_TOGGLE LD3_TOGGLE
#define LED_RED_ON LD4_ON #define LED0_ON (LED_PORT->BSRR = LED0_MASK)
#define LED_RED_OFF LD4_OFF #define LED0_OFF (LED_PORT->BRR = LED0_MASK)
#define LED_RED_TOGGLE LD4_TOGGLE #define LED0_TOGGLE (LED_PORT->ODR ^= LED0_MASK)
#define LED1_ON (LED_PORT->BSRR = LED1_MASK)
#define LED1_OFF (LED_PORT->BRR = LED1_MASK)
#define LED1_TOGGLE (LED_PORT->ODR ^= LED1_MASK)
/** @} */ /** @} */
/** /**