Digital Power Starter Kit 3 Firmware
dsPIC33C Boost Converter Voltage Mode Control Example
p33c_macros.h
1 /* Microchip Technology Inc. and its subsidiaries. You may use this software
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21 
22 /*
23  * File: p33c_macros.h
24  * Author: M91406
25  * Comments: Header files providing inline assembly macros for basic CPU instructions
26  * Revision history:
27  * 1.0 Initial release 06/22/20
28  */
29 
30 // This is a guard condition so that contents of this file are not included
31 // more than once.
32 #ifndef P33C_CPU_MACROS_H
33 #define P33C_CPU_MACROS_H
34 
35 #include <xc.h> // include processor files - each processor file is guarded.
36 
37 #define WDT_RESET() asm volatile ("CRLWDT\n")
38 #define PWRSAV_IDLE() asm volatile ("PWRSAV #1\n")
39 #define PWRSAV_SLEEP() asm volatile ("PWRSAV #0\n")
40 #define CPU_RESET() asm volatile ("RESET\n")
41 
42 /**********************************************************************************
43  * @def ALTWREG_SWAP
44  * @brief Swaps the current working register set
45  * @param x: Index of new Working Register Set (Target) of type unsigned integer
46  * @return Index of previous Working Register Set (Origin) of type unsigned integer
47  **********************************************************************************/
48 #define ALTWREG_SWAP(x) __extension__ ({ \
49  volatile uint16_t __x = (x), __v; \
50  __asm__ ("ctxtswp %1;\n\t" : "=d" (__v) : "d" (__x)); __v; \
51 })
52 
53 /**********************************************************************************
54  * @def SwapWordBytes(x)
55  * @brief: Swaps high and low byte of a 16 bit value
56  * @param x: Value to be swapped
57  * @return 16-bit value of swapped byte order
58  **********************************************************************************/
59 #define SwapWordBytes(x) __extension__ ({ \
60  volatile uint16_t __x = (x), __v; \
61  __asm__ ("swap %0;\n\t" : "=d" (__v) : "d" (__x)); __v; \
62 })
63 
64 /**********************************************************************************
65  * @def ReverseBitOrder16b(x)
66  * @brief: Reverses the bit order of a 16 bit value
67  * @param x: Value to be reversed
68  * @return 16-bit value in reverse bit order
69  **********************************************************************************/
70 
71 #define ReverseBitOrder16b(x) __extension__ ({ \
72  volatile uint16_t __x = (x), __v; \
73  __asm__ volatile ( \
74  "0: do #15, 1f\n\t" \
75  "sl %1, %1\n\t" \
76  "1: rrc %0, %0\n\t" \
77  : "=d" (__v), \
78  "+d" (__x)); \
79  __v; \
80 })
81 
82 #endif /* P33C_CPU_MACROS_H */
83 
84 // end of file