Pyastra - Python code translator to PIC architecture assembler

Pyastra is a translator of Python code to assembler. It accepts a source file written in Python and, if the code contains no errors, it generates an assembler file, which you can compile into a HEX file using your favorite PIC assembler (gpasm, mpasm or others compatible with them).




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Supported Microcontrollers and Processors

All microcontrollers of the PIC12, PIC14 and PIC16 family.

Example

Source code (Port A, pin 0 flashes endlessly):

 while(1): PORTA[0] = 1 for i in xrange(0,255): pass PORTA[0] = 0 for i in xrange(0,255): pass 

Assembly code at the output

 ; ; Generated by pyastra 0.0.1 ; infile: led_blink.py ; processor 16c432 #include p16c432.inc _lshift_left equ 0x20 ;bank 0 _lshift_right equ 0x21 ;bank 0 _rshift_left equ 0x22 ;bank 0 _rshift_right equ 0x23 ;bank 0 _mul_left equ 0x24 ;bank 0 _mul_right equ 0x25 ;bank 0 mul_cntr equ 0x26 ;bank 0 mul_res equ 0x27 ;bank 0 _div_left equ 0x28 ;bank 0 _div_right equ 0x29 ;bank 0 div_cntr equ 0x2a ;bank 0 div_buf equ 0x2b ;bank 0 _mod_left equ 0x2c ;bank 0 _mod_right equ 0x2d ;bank 0 mod_cntr equ 0x2e ;bank 0 mod_buf equ 0x2f ;bank 0 _pow_left equ 0x30 ;bank 0 _pow_right equ 0x31 ;bank 0 pow_res equ 0x32 ;bank 0 pow_buf equ 0x33 ;bank 0 pow_cntr equ 0x34 ;bank 0 stack0 equ 0x35 ;bank 0 _i equ 0x36 ;bank 0 stack1 equ 0x37 ;bank 0 stack2 equ 0x38 ;bank 0 stack3 equ 0x39 ;bank 0 stack4 equ 0x3a ;bank 0 org 0x0 goto main org 0x5 main label0 movlw 0x1 bcf STATUS, RP0 movwf stack0 bcf STATUS, RP0 btfsc STATUS, Z goto label1 bcf STATUS, RP0 bsf PORTA, 0 bcf STATUS, RP0 clrf _i movlw 0xff bcf STATUS, RP0 movwf stack2 bcf STATUS, RP0 movwf st label2 bcf STATUS, RP0 movf stack1, w bcf STATUS, RP0 subwf _i, w bcf STATUS, RP0 btfsc STATUS, Z goto label3 bcf STATUS, RP0 btfsc STATUS, C goto label3 label4 bcf STATUS, RP0 incf _i, f goto label2 label3 bcf STATUS, RP0 bcf PORTA, 0 bcf STATUS, RP0 clrf _i movlw 0xff bcf STATUS, RP0 movwf stack4 bcf STATUS, RP0 movwf stack3 label5 bcf STATUS, RP0 movf stack3, w bcf STATUS, RP0 subwf _i, w bcf STATUS, RP0 btfsc STATUS, Z goto label6 bcf STATUS, RP0 btfsc STATUS, C goto label6 label7 bcf STATUS, RP0 incf _i, f goto label5 label6 goto label0 label1 goto $ end 

Official site: pyastra.sourceforge.net
You can download it from here: sourceforge.net/projects/pyastra/files