Make minimal watchdog interrupting example to build from

source/CMakeLists.txt

@@ -20,6 +20,9 @@ link_directories(
 add_executable(${PROJECT_NAME}_min test/min.c  lib/hal_mcu/hal_mcu.c)
 target_link_libraries(${PROJECT_NAME}_min uart_drv)
 
+add_executable(${PROJECT_NAME}_min2 test/min2.c  lib/hal_mcu/hal_mcu.c)
+target_link_libraries(${PROJECT_NAME}_min2)
+
 add_executable(${PROJECT_NAME}_rxer test/LaunchPad_trx_main.c test/LaunchPad_trx_demo.c)
 target_link_libraries(${PROJECT_NAME}_rxer hal_mcu radio_drv)
 

source/test/min2.c

+#include "msp430fr5994.h"
+#include "stdio.h"
+#include "lib/radio_drv/hal_types.h"
+
+/******************************************************************************
+ * LOCAL FUNCTIONS
+ */
+unsigned long volatile time_counter;
+
+
+
+/******************************************************************************
+ * @fn         main
+ *
+ * @brief      Main GUI application level control loop is implemented in the
+ *             main loop. It is a state machine that cycles thru various states
+ *             during the interactive use by the operator. The presents a text
+ *             based GUI, the user is then promted to type in a command with
+ *             a given set of parameters. The state machine then calls a simpler
+ *             parser that tries to figure out what the user wants to do.
+ *
+ * input parameters
+ *
+ * @param       void
+ *
+ * output parameters
+ *
+ * @return      void
+ *
+ */
+
+ #define DCO_RANGE_SEL DCORSEL
+ #define DCO_FREQ_SEL DCOFSEL_4
+ #define F_CPU_SCALE  DIVM_0
+
+ #if DCO_RANGE_SEL==DCORSEL
+	#if DCO_FREQ_SEL>DCOFSEL_3
+  	#define F_CPU_RANGE 5333000UL
+	#else
+  	#define F_CPU_RANGE 5333000UL*1.5
+	#endif
+ #else
+ 	#define F_CPU_RANGE 2667000UL
+ #endif
+
+ #if DCO_FREQ_SEL==DCOFSEL_1
+   #define F_CPU F_CPU_RANGE*1.0
+ #elif DCO_FREQ_SEL==DCOFSEL_2
+   #define F_CPU F_CPU_RANGE*1.313
+ #elif DCO_FREQ_SEL==DCOFSEL_3
+   #define F_CPU F_CPU_RANGE*1.5
+ #elif DCO_FREQ_SEL==DCOFSEL_4
+	 #define F_CPU F_CPU_RANGE*2.0
+ #elif DCO_FREQ_SEL==DCOFSEL_5
+	 #define F_CPU F_CPU_RANGE*2.62
+ #elif DCO_FREQ_SEL==DCOFSEL_6
+	 #define F_CPU F_CPU_RANGE*3.0
+ #else //DCO_FREQ_SEL==DCOFSEL_0
+   #define F_CPU 1000000UL
+ #endif
+
+ #define F_CPU_SCALED_US F_CPU/(1<<F_CPU_SCALE)/1000000.0
+             /* Number of CPU cycles per us */
+ #define _delay_us(__us) \
+   if((uint32_t) (F_CPU_SCALED_US * __us) != F_CPU_SCALED_US * __us)\
+         __delay_cycles((uint32_t) ( F_CPU_SCALED_US * __us)+1);\
+   else __delay_cycles((uint32_t) ( F_CPU_SCALED_US * __us))
+enum state_names {IDLE_RESET, WAIT, OPERATE};
+void main (void)
+{
+
+	int idle_counter = 0;
+
+	/*  Stop WDT */
+	WDTCTL = WDTPW + WDTHOLD;
+
+	/* Setup MSP specific functions, IO's, timers and WDT */
+    //Comes from lib/hal_mcu/hal_mcu.c
+	//msp_setup();
+
+	// Enable the interupts on port 2 to catch the user button (TRXEB)
+
+	BUTTON_DIR   &= ~BUTTON_PIN;       // input direction
+	BUTTON_OUT   |=  BUTTON_PIN;       // set high on port
+	BUTTON_PxIE  |=  BUTTON_PIN;       // enable interupt
+	BUTTON_PxIES |=  BUTTON_PIN;       // Hi/lo edge
+	BUTTON_REN   |=  BUTTON_PIN;       // Pull up resistor
+	BUTTON_PxIES &= ~BUTTON_PIN;       // IFG cleared
+
+	// Removed XTAL configuration and DCO Fault detection as not on exp430_fr5994
+	
+  // Unlock CS registers.
+  CSCTL0 = CSKEY;
+  // Set DCO to 24MHz.
+  CSCTL1 = DCO_RANGE_SEL + DCO_FREQ_SEL;
+  // ACLK = VLO, SMCLK = MCLK = DCO
+  CSCTL2 = SELA_1 + SELS_3 + SELM_3;
+  // ACLK/1, SMCLK/8, MCLK/1
+  CSCTL3 = DIVA_0 + DIVS_0 + F_CPU_SCALE;
+  // Power down unused clocks.
+  CSCTL4 = HFXTOFF + VLOOFF;
+  // Lock clock registers.
+  CSCTL0 = 0;
+
+	// Setup Watch dog timer for 0.5 second tick using 16MHz DCO on MSP430FR5994
+    // WDT 0.5s @ 16mHz, SMCLK, interval timer
+	WDTCTL= WDTPW + WDTSSEL_0 + WDTTMSEL + WDTIS_2;
+	SFRIE1 |= WDTIE;                           // Enable WDT interrupt
+
+  // Unlock the system.
+  PM5CTL0 &= ~LOCKLPM5;
+
+	P1DIR |= BIT0 | BIT1;
+	__enable_interrupt();
+	/* Infinite loop with a 1 second timer */
+	while(1)
+	{
+		P1OUT ^= BIT0;
+		_delay_us(4166);
+		_delay_us(8332);
+	}
+}
+
+/******************************************************************************
+ * @fn         wdt_isr
+ *
+ * @brief      Interrupt service routine for watch dog timer.
+ *
+ * input parameters
+ *
+ * @param       void
+ *
+ * output parameters
+ *
+ * @return      void
+ *
+ */
+HAL_ISR_FUNC_DECLARATION(wdt_isr,WDT)
+{
+	/* global "0.5 second" counter used for printing time stamped packet sniffer data */
+	P1OUT ^= BIT1;
+
+}