Diff: buttons.cpp

Revision:

0:9d0b9785d3d6

Child:

1:aa5df1878126

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/buttons.cpp	Sat Apr 11 22:53:05 2020 +0000
@@ -0,0 +1,33 @@
+
+#include "mbed.h"
+#include "buttons.h"
+
+
+/* Object definition */
+BusIn  buttons (ENTER_SW_PIN, LIMIT_SW_01_PIN, GAS_INPUT_SW_PIN);
+
+/* Global variable definition */
+volatile uint8_t button_state = 0; // debounced button state (bit == 1: button pressed)
+volatile uint8_t button_press = 0; // button press detect
+
+
+
+void Buttons_Initialize(void){
+    // Enable the pull-up resistors for the buttons and the switch    
+    buttons.mode(PullUp);
+}
+
+
+
+/****************************************************************
+   getButtonPress: check if a button has been pressed. 
+   Each pressed key is reported only once
+*****************************************************************/
+
+uint8_t Get_Button_Press(uint8_t button_mask){
+  __disable_irq();                                 // disable interrupts
+  button_mask &= button_press;                     // read button(s)
+  button_press ^= button_mask;                     // clear button(s)
+  __enable_irq();                                   // enable interrupts     
+  return button_mask;
+}
\ No newline at end of file