ADC_Init_Potentiometer #4

Tivac2/adc.c

@@ -0,0 +1,26 @@
+#include "adc.h"
+
+
+void ADC0_SS3_Init (void)
+{
+	SYSCTL_RCGCADC_R |= (1<<0);			//enable ADC0 clock
+	ADC0_ACTSS_R &= ~(1<<SS_num);				//disable sample sequncer during configuration
+	ADC0_EMUX_R = (ADC0_EMUX_R& ~(0xF<<SS_num*4)) | (trigger_select<<SS_num*4) ; //choosing the triggering method
+	ADC0_SSMUX3_R = 0x0;					//input from channel 0 i.e PE3
+	ADC0_SSCTL3_R |= ( (ADC0_SSCTL3_TS0<<3) | (ADC0_SSCTL3_IE0<<2) | (ADC0_SSCTL3_END0<<1));  //configuring sample sequncer 3 control port
+	if(ADC0_SSCTL3_IE0	==	0x1)
+	{
+		ADC0_IM_R |= (1<<3);
+		NVIC_EN0_R |= (1<<17);
+	}
+	ADC0_ACTSS_R |= (1<<SS_num);				//enable sample sequncer during configuration
+}
+void ADC_Init_Potentiometer (void)
+{
+ADC0_SS3_Init ();
+Port_AnalogOrDigital (PORTE, 0X08, 0);
+//Port_AlternateFunction (PORTE,0X08,1, uint32_t pctl_mask);
+GPIO_PORTE_AFSEL_R|=0x08;
+
+
+}

Tivac2/adc.h

@@ -0,0 +1,43 @@
+
+#ifndef ADC_H_
+#define ADC_H_
+
+#include "port.h"
+#include "DIO.h"
+#include "tm4c123gh6pm.h"
+#include "std_types.h"
+
+#ifndef PORTA
+#define PORTA 0
+#endif
+
+#ifndef PORTB
+#define PORTB 1
+#endif
+
+#ifndef PORTC
+#define PORTC 2
+#endif
+
+#ifndef PORTD
+#define PORTD 3
+#endif
+
+#ifndef PORTE
+#define PORTE 4
+#endif
+
+#ifndef PORTF
+#define PORTF 5
+#endif
+
+#define trigger_select 0x0F
+#define SS_num 3
+#define ADC0_SSCTL3_IE0		0x1
+#define ADC0_SSCTL3_END0	0x1
+#define ADC0_SSCTL3_TS0   0x1
+
+
+void ADC0_SS3_Init (void);
+
+#endif