Testing keyboard poll

firmware/Core/Src/inputs.c

@@ -0,0 +1,53 @@
+/*
+ * inputs.c
+ *
+ *  Created on: Oct 29, 2022
+ *      Author: mcfly
+ */
+#include "inputs.h"
+#include "st7789.h"
+
+#define BTNPRT				GPIOC
+#define ENCBTNPRT			BGIOB
+#define ENCBTNPRTMASK	0b11001000
+#define SCRBTNPRT			BGIOD
+#define SCRBTNPRTMASK	0b1110000
+
+void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
+	static uint16_t btnbuff = 0xFFFF;
+	static uint16_t btnprev = 0xFFFF;
+	uint8_t	i;
+	uint16_t pin;
+	GPIO_TypeDef *port;
+
+	//check if the interrupt comes from TIM6
+	if(htim->Instance == TIM6) {
+		btnbuff = BTNPRT->IDR;
+		for (i=5; i>=2; i--) {
+			if ( !((btnbuff>>i) & 1) && ((btnprev>>i) & 1) ) {
+				switch (i) {
+					case 5:
+						port = CH1_EN_GPIO_Port;
+						pin  = CH1_EN_Pin;
+						break;
+					case 4:
+						port = CH2_EN_GPIO_Port;
+						pin  = CH2_EN_Pin;
+						break;
+					case 3:
+						port = PWM1_EN_GPIO_Port;
+						pin  = PWM1_EN_Pin;
+						break;
+					case 2:
+						port = PWM2_EN_GPIO_Port;
+						pin  = PWM2_EN_Pin;
+						break;
+				}
+				HAL_GPIO_TogglePin(port, pin);
+			}
+		}
+		btnprev = btnbuff;
+	}
+
+}
+