1 files changed, 33 insertions, 0 deletions
diff --git a/Core/Src/button.c b/Core/Src/button.c
new file mode 100644
index 0000000..a9333d9
--- /dev/null
+++ b/Core/Src/button.c
@@ -0,0 +1,33 @@
+/*
+ * button.c
+ *
+ *  Created on: 2 déc. 2020
+ *      Author: root
+ */
+
+#include "button.h"
+
+void Button_init(BUTTON_TypeDef *button, GPIO_TypeDef * port, uint8_t pn,uint8_t pl) {
+button->gpioPort = port;
+button->pin = pn;
+button->pull = pl;
+
+//Activation de l'horloge sur le port en question
+
+//déterminer le numéro du port 0--> GPIOA, 1-->GPIOB, etc.
+uint8_t nb_port;
+nb_port = ((uint32_t) port - IOPPERIPH_BASE) / 0x400;
+//activation de l'hologe
+RCC->IOPENR |= 1 << nb_port;
+//configuration de la pin en entrée
+button->gpioPort->MODER &= ~(0b11 << 2 * pn);
+//configuration du type de pull
+button->gpioPort->PUPDR &= ~(0b11 << 2 * pn);
+button->gpioPort->PUPDR |= (pl << 2 * pn);
+}
+
+uint8_t Button_State(BUTTON_TypeDef *button) {
+if ((button->gpioPort->IDR & (1 << button->pin)) != 0)
+return 1;
+return 0;
+}