44 lines
888 B
C
44 lines
888 B
C
/*
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* gpio.c - GPIO functions, only for Nucleo-STM32L476 board
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*/
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#include "stm32l4xx_ll_bus.h"
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#include "stm32l4xx_ll_gpio.h"
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#include "gpio.h"
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#define LED_PORT GPIOA
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#define LED_PIN LL_GPIO_PIN_5
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#define BUT_PORT GPIOC
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#define BUT_PIN LL_GPIO_PIN_13
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void GPIO_init(void)
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{
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// PORT A
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LL_AHB2_GRP1_EnableClock( LL_AHB2_GRP1_PERIPH_GPIOA );
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// Green LED (user LED) - PA5
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LL_GPIO_SetPinMode( LED_PORT, LED_PIN, LL_GPIO_MODE_OUTPUT );
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LL_GPIO_SetPinOutputType( LED_PORT, LED_PIN, LL_GPIO_OUTPUT_PUSHPULL );
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// PORT C
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LL_AHB2_GRP1_EnableClock( LL_AHB2_GRP1_PERIPH_GPIOC );
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// Blue button - PC13
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LL_GPIO_SetPinMode( BUT_PORT, BUT_PIN, LL_GPIO_MODE_INPUT );
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}
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void LED_GREEN( int val )
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{
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if ( val )
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LL_GPIO_SetOutputPin( LED_PORT, LED_PIN );
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else LL_GPIO_ResetOutputPin( LED_PORT, LED_PIN );
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}
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int BLUE_BUTTON()
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{
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return ( !LL_GPIO_IsInputPinSet( BUT_PORT, BUT_PIN ) );
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}
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