Create hal_adc.c for MSP430FR4133

hal/MSP430/MSP430FR4133/hal_adc.c

@@ -0,0 +1,66 @@
+
+/*
+ * hal_adc.c
+ *
+ *  Created on: Mar 26, 2019
+ *      Author: Daniel Morano
+ */
+
+#include <msp430.h>
+#include <stdint.h>
+#include "adc.h"
+
+void hal_ADC_Init(void)
+{
+	/* Configure ADC A1 pin */
+	SYSCFG2 |= ADCPCTL1;                                     
+
+    /* Configure ADC10 */
+    ADCCTL0 |= ADCSHT_2 | ADCON;                             // ADCON, S&H=16 ADC clks
+    ADCCTL1 |= ADCSHP;                                       // ADCCLK = MODOSC; sampling timer
+    ADCCTL2 |= ADCRES;                                       // 10-bit conversion results
+    ADCIE |= ADCIE0;                                         // Enable ADC conv complete interrupt      
+}
+
+void hal_ADC_StartChannel(uint8_t channel)
+{
+	/* ADC input select using the selected channel */
+	ADCMCTL0 |= ADCINCH_1 + channel;  
+
+	/* Sampling and conversion start */
+    ADCCTL0 |= ADCENC | ADCSC;  
+}
+
+
+/* ADC interrupt service routine */
+#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
+#pragma vector=ADC_VECTOR
+__interrupt void ADC_ISR(void)
+#elif defined(__GNUC__)
+void __attribute__ ((interrupt(ADC_VECTOR))) ADC_ISR (void)
+#else
+#error Compiler not supported!
+#endif
+{
+	/* Switch Case for various ADC Interrupt flags */
+    switch(__even_in_range(ADCIV,ADCIV_ADCIFG))
+    {
+        case ADCIV_NONE:
+            break;
+        case ADCIV_ADCOVIFG:
+            break;
+        case ADCIV_ADCTOVIFG:
+            break;
+        case ADCIV_ADCHIIFG:
+            break;
+        case ADCIV_ADCLOIFG:
+            break;
+        case ADCIV_ADCINIFG:
+            break;
+        case ADCIV_ADCIFG:									 
+            ADC_ProcessMeasurementFromISR(ADCMEM0);  		 // Function found in "adc.h" that needs to be called in interrupt to process measurement
+            break;
+        default:
+            break;
+    }  
+}