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Added led support for STM32L4R5

pull/143/head
Hajer KALLEL 2021-08-24 10:35:22 +01:00 committed by Daniele Lacamera
parent 94cacfe795
commit 17a3d5c476
1 changed files with 51 additions and 0 deletions
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51
test-app/led.c
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@ -178,3 +178,54 @@ void boot_led_off(void)
#endif /* PLATFORM_stm32wb */
#ifdef PLATFORM_stm32l4
#define AHB2_CLOCK_ER (*(volatile uint32_t *)(0x4002104C)) // RCC_AHB2ENR
#define GPIOB_AHB2_CLOCK_ER (1 << 1)
#define GPIOB_BASE 0x48000400
#define GPIOB_MODE (*(volatile uint32_t *)(GPIOB_BASE + 0x00))
#define GPIOB_OTYPE (*(volatile uint32_t *)(GPIOB_BASE + 0x04))
#define GPIOB_OSPD (*(volatile uint32_t *)(GPIOB_BASE + 0x08))
#define GPIOB_PUPD (*(volatile uint32_t *)(GPIOB_BASE + 0x0c))
#define GPIOB_ODR (*(volatile uint32_t *)(GPIOB_BASE + 0x14))
#define GPIOB_BSRR (*(volatile uint32_t *)(GPIOB_BASE + 0x18))
#define GPIOB_AFL (*(volatile uint32_t *)(GPIOB_BASE + 0x20))
#define GPIOB_AFH (*(volatile uint32_t *)(GPIOB_BASE + 0x24))
#define LED_PIN (14) /* User LD3: a red user LED is connected to PB14 */
#define LED_BOOT_PIN (7) /* User LD2: a blue user LED is connected to PB7 */
#define GPIO_OSPEED_100MHZ (0x03)
void boot_led_on(void)
{
uint32_t reg;
uint32_t pin = LED_BOOT_PIN;
AHB2_CLOCK_ER |= GPIOB_AHB2_CLOCK_ER;
reg = GPIOB_MODE & ~(0x03 << (pin * 2));
GPIOB_MODE = reg | (1 << (pin * 2));
reg = GPIOB_PUPD & ~(0x03 << (pin * 2));
GPIOB_PUPD = reg | (1 << (pin * 2));
GPIOB_BSRR |= (1 << pin);
}
void led_on(void)
{
uint32_t reg;
uint32_t pin = LED_PIN;
AHB2_CLOCK_ER |= GPIOB_AHB2_CLOCK_ER;
reg = GPIOB_MODE & ~(0x03 << (pin * 2));
GPIOB_MODE = reg | (1 << (pin * 2));
reg = GPIOB_PUPD & ~(0x03 << (pin * 2));
GPIOB_PUPD = reg | (1 << (pin * 2));
GPIOB_BSRR |= (1 << pin);
}
void led_off(void)
{
GPIOB_BSRR |= (1 << (LED_PIN + 16));
}
void boot_led_off(void)
{
GPIOB_BSRR |= (1 << (LED_BOOT_PIN + 16));
}
#endif /* PLATFORM_stm32l4 */