diff options
| author | Christian Pointner <equinox@spreadspace.org> | 2013-07-11 01:33:38 +0000 |
|---|---|---|
| committer | Christian Pointner <equinox@spreadspace.org> | 2013-07-11 01:33:38 +0000 |
| commit | a98d62341d4a72bc9393308421343524c48958c2 (patch) | |
| tree | 04724d938e8480e14bb91a14a84996b81edd76b7 | |
| parent | implemented reset command for 16f1847 (diff) | |
read flash for 16f1847 works
git-svn-id: https://svn.spreadspace.org/pic/trunk@77 a09c6847-51d9-44de-8ef2-e725cf50f3c7
| -rw-r--r-- | bootloader/cmds-16f1847.inc | 68 |
1 files changed, 32 insertions, 36 deletions
diff --git a/bootloader/cmds-16f1847.inc b/bootloader/cmds-16f1847.inc index 4ffb275..d5460c1 100644 --- a/bootloader/cmds-16f1847.inc +++ b/bootloader/cmds-16f1847.inc @@ -32,42 +32,38 @@ cmd_resset_wait_ack ;; flash read -------- cmd_r_flash -;; movlw FSS ; initialize EEADR:EEADRH and FSR -;; movwf cnt -;; movlw b'01011000' -;; movwf STATUS -;; movlw combuff + .2 -;; movwf FSR -;; movf INDF,w -;; movwf EEADR -;; incf FSR,f -;; movf INDF,w -;; movwf EEADRH -;; read_flash_segment_loop -;; bsf STATUS,RP0 ; perform the actual read -;; bsf EECON1,EEPGD -;; bsf EECON1,RD -;; nop -;; nop -;; bcf STATUS,RP0 -;; movf EEDAT,w ; load code word from EEDAT:EEDATH to combuff -;; movwf INDF -;; incf FSR,f -;; movf EEDATH,w -;; movwf INDF -;; incf FSR,f -;; incfsz EEADR,f ; increment flash address -;; goto read_flash_segment_next -;; incf EEADRH,f -g;; read_flash_segment_next -;; decfsz cnt,f -;; goto read_flash_segment_loop -;; bcf STATUS,RP1 -;; clrf combuff + .2 ; = E_OK -;; movlw .1 + .2*FSS ; bytes to send -;; call send_answer - movlw E_NOT_IMPL - call ack_cmd + movlw FSS ; initialize EEADR:EEADRH and FSR + movwf cnt + movlb .3 + movlw combuff + .2 + movwf FSR + movf INDF,w + movwf EEADRL + incf FSR,f + movf INDF,w + movwf EEADRH +read_flash_segment_loop + bcf EECON1,CFGS ; perform the actual read + bsf EECON1,EEPGD + bsf EECON1,RD + nop + nop + movf EEDATL,w ; load code word from EEDAT:EEDATH to combuff + movwf INDF + incf FSR,f + movf EEDATH,w + movwf INDF + incf FSR,f + incfsz EEADRL,f ; increment flash address + goto read_flash_segment_next + incf EEADRH,f +read_flash_segment_next + decfsz cnt,f + goto read_flash_segment_loop + movlb .0 + clrf combuff + .2 ; = E_OK + movlw .1 + .2*FSS ; bytes to send + call send_answer goto wait_new_cmd ;; flash write -------- |